\u4e00\u5207\u7684\u95ee\u9898\u90fd\u8981\u4ece\u6211\u63a5\u53d7\u7684\u9879\u76ee\u5f00\u59cb\u8bf4\u8d77, \u5728\u5f00\u53d1\u8fd9\u4e2a\u9879\u76ee\u7684\u8fc7\u7a0b\u4e2d,\u53d1\u751f\u4e86\u5404\u79cd\u5947\u8469\u7684\u4e8b\u60c5, \u4e0b\u9762\u6211\u7b80\u5355\u8bf4\u7ed9\u4f60\u4eec\u542c\u542c:<\/p>\n
\u8d26\u53f7\u91cd\u590d\u6ce8\u518c?<\/strong><\/h5>\n\u4f60\u80af\u5b9a\u5728\u60f3\u8fd9\u662f\u4ec0\u4e48\u610f\u601d? \u5c31\u662f\u5b57\u9762\u610f\u601d,\u5df2\u7ecf\u6ce8\u518c\u7684\u8d26\u53f7,\u53ef\u4ee5\u518d\u6b21\u6ce8\u518c\u6210\u529f!!!<\/p>\n
else if (UserConstants.NOT_UNIQUE.equals(userService.checkUserNameUnique(username))\n||"\u533f\u540d\u7528\u6237".equals(username)){\n \/\/ \u6ce8\u518c\u7528\u6237\u5df2\u5b58\u5728\n msg = "\u6ce8\u518c\u7528\u6237'" + username + "'\u5931\u8d25";\n}<\/code><\/pre>\n\u5982\u4e0a\u6240\u793a: checkUserNameUnique(username)<\/code>\u7528\u6765\u9a8c\u8bc1\u6570\u636e\u5e93\u662f\u5426\u5b58\u5728\u7528\u6237\u540d:<\/p>\n<select id="checkUserNameUnique" parameterType="String" resultType="int">\n select count(1) from sys_user where user_name = #{userName} limit 1\n<\/select><\/code><\/pre>\n\u6b63\u5e38\u6765\u8bf4,\u662f\u4e0d\u4f1a\u6709\u95ee\u9898\u7684,\u90a3\u4e48\u539f\u56e0\u6211\u4eec\u540e\u9762\u8bb2,\u63a5\u7740\u770b\u4e0b\u4e00\u4e2a\u95ee\u9898\u3002<\/p>\n
\u63a8\u8350\u4e00\u4e2a\u5f00\u6e90\u514d\u8d39\u7684 Spring Boot \u5b9e\u6218\u9879\u76ee\uff1a<\/p>\n
https:\/\/github.com\/javastacks\/spring-boot-best-practice<\/a><\/p><\/blockquote>\n\u67e5\u8be2\u5168\u90e8\u5206\u7c7b\u7684\u4e0b\u62c9\u5217\u8868\u53ea\u80fd\u67e5\u51fa5\u6761\u6570\u636e\uff1f<\/strong><\/h5>\n![\"\"](\"https:\/\/segmentfault.com\/img\/bVdbtAX\" "\\"\\"")
<\/p>\n
\u5982\u4e0a\u6240\u793a,\u660e\u660e\u6709\u5341\u591a\u4e2a\u7ed3\u679c,\u600e\u4e48\u53ea\u80fd\u8fd4\u56de5\u4e2a?\u6211\u4e5f\u6ca1\u6709\u6dfb\u52a0\u5206\u9875\u53c2\u6570\u554a\uff1f<\/p>\n
\u76f8\u4fe1\u7528\u8fc7PageHelper\u7684\u540c\u5b66\u5df2\u7ecf\u77e5\u9053\u95ee\u9898\u51fa\u5728\u54ea\u91cc\u4e86\u3002<\/p>\n
\u4fee\u6539\u7528\u6237\u5bc6\u7801\u62a5\u9519?<\/strong><\/h5>\n\u5f53\u7ba1\u7406\u5458\u5728\u540e\u53f0\u754c\u9762\u91cd\u7f6e\u7528\u6237\u7684\u5bc6\u7801\u7684\u65f6\u5019\uff0c\u5c45\u7136\u62a5\u9519\u4e86\uff1f<\/p>\n
\u62a5\u9519\u4fe1\u606f\u6e05\u6670\u7684\u544a\u8bc9\u4e86\u6211\uff1asql\u8bed\u53e5\u5f02\u5e38,update\u8bed\u53e5\u4e0d\u8ba4\u8bc6 \u201cLimit 5\u201d<\/p>\n
\u5230\u6b64\u4e3a\u6b62\uff0c\u62a5\u9519\u4fe1\u606f\u5df2\u7ecf\u544a\u8bc9\u4e86\u6211\uff0c\u6211\u7684sql\u88ab\u62fc\u63a5\u4e86\u8be5\u6b7b\u7684\u201climit\u201d\u5206\u9875\u53c2\u6570\u3002<\/p>\n
\u5c0f\u7ed3<\/strong><\/h5>\n\u4e0a\u9762\u63d0\u5230\u7684\u51e0\u4e2a\u53ea\u662f\u51b0\u5c71\u4e00\u89d2\uff0c\u5728\u6211\u4f7f\u7528\u7684\u8fc7\u7a0b\u4e2d\uff0c\u8fd8\u6709\u5404\u79cd\u6d89\u53ca\u5230sql\u7684\u5730\u65b9\uff0c\u4f1a\u56e0\u4e3a\u8fd9\u4e2a\u5206\u9875\u53c2\u6570\u5bfc\u81f4\u7684\u95ee\u9898\uff0c\u6211\u53ef\u4ee5\u5206\u4e3a\u4e24\u79cd\uff1a<\/p>\n
1\uff09\u76f4\u63a5\u5bfc\u81f4\u62a5\u9519\u7684\uff1a\u660e\u786e\u62a5\u9519\u539f\u56e0\u7684<\/strong><\/p>\n\u6bd4\u5982insert\u3001update\u8bed\u53e5\u7b49\uff0c\u4e0d\u652f\u6301limit\uff0c\u4f1a\u76f4\u63a5\u62a5\u9519\u3002<\/p>\n
2\uff09\u5bfc\u81f4\u4e1a\u52a1\u903b\u8f91\u9519\u8bef\uff0c\u4f46\u662f\u4ee3\u7801\u6ca1\u6709\u9519\u8bef\u63d0\u793a<\/strong><\/p>\n\u5982\u6211\u4e0a\u9762\u63d0\u5230\u7684\u7528\u6237\u53ef\u4ee5\u91cd\u590d\u6ce8\u518c\uff0c\u5374\u6ca1\u6709\u62a5\u9519\uff0c\u5b9e\u9645\u5728\u4ee3\u7801\u5f53\u4e2d\u662f\u6709\u62a5\u9519\u7684\uff0c\u4f46\u662f\u5f53\u524d\u65b9\u6cd5\u5bf9\u5f02\u5e38\u8fdb\u884c\u4e86throw\uff0c\u6700\u7ec8\u88ab\u5168\u5c40\u5f02\u5e38\u6355\u83b7\u4e86\u3002<\/p>\n
\u4e0d\u5206\u9875\u7684sql\u88ab\u62fc\u63a5\u4e86limit\uff0c\u5bfc\u81f4\u6ca1\u6709\u62a5\u9519\uff0c\u4f46\u662f\u6570\u636e\u8fd4\u56de\u91cf\u9519\u8bef\u3002<\/p>\n
\u5f02\u5e38\u4e0d\u662f\u6bcf\u6b21\u51fa\u73b0\uff0c\u662f\u6709\u4e00\u5b9a\u7eaa\u5f8b\u7684\uff0c\u4f46\u662f\u89e6\u53d1\u51e0\u7387\u8f83\u9ad8\uff0c\u539f\u56e0\u5728\u540e\u9762\u4f1a\u9010\u6e10\u8131\u51fa\u3002<\/p><\/blockquote>\n
PageHelper\u662f\u600e\u4e48\u505a\u5230\u4e0a\u9762\u7684\u95ee\u9898\u7684\uff1f<\/strong><\/h3>\nPageHelper\u4f7f\u7528<\/strong><\/h5>\n\u6211\u8fd9\u91cc\u53ea\u8bb2\u89e3\u9879\u76ee\u57fa\u4e8e\u7684\u6846\u67b6\u7684\u4f7f\u7528\u65b9\u5f0f\u3002<\/p>\n
\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
@GetMapping("\/cms\/cmsEssayList")\npublic TableDataInfo cmsEssayList(CmsBlog cmsBlog) {\n \/\/\u72b6\u6001\u4e3a\u53d1\u5e03\n cmsBlog.setStatus("1");\n startPage();\n List<CmsBlog> list = cmsBlogService.selectCmsBlogList(cmsBlog);\n return getDataTable(list);\n}<\/code><\/pre>\n\u4f7f\u7528\u8d77\u6765\u8fd8\u662f\u5f88\u7b80\u5355\u7684\uff0c\u901a\u8fc7 startPage()<\/code>\u6307\u5b9a\u5206\u9875\u53c2\u6570\uff0c\u901a\u8fc7getDataTable(list)<\/code>\u5bf9\u7ed3\u679c\u6570\u636e\u5c01\u88c5\u6210\u5206\u9875\u7684\u683c\u5f0f\u3002<\/p>\n\u6709\u4e9b\u540c\u5b66\u4f1a\u95ee\uff0c\u8fd9\u4e5f\u6ca1\u6ca1\u4f20\u5206\u9875\u53c2\u6570\u554a\uff0c\u5e76\u4e14\u5b9e\u4f53\u7c7b\u5f53\u4e2d\u4e5f\u6ca1\u6709\uff0c\u8fd9\u5c31\u662f\u6bd4\u8f83\u6709\u610f\u601d\u7684\u70b9\uff0c\u4e0b\u4e00\u5c0f\u7ed3\u5c31\u6765\u804a\u804a\u6e90\u7801\u3002<\/p>\n
startPage()\u5e72\u5565\u4e86\uff1f<\/strong><\/h5>\nprotected void startPage(){\n \/\/ \u901a\u8fc7request\u53bb\u83b7\u53d6\u524d\u7aef\u4f20\u9012\u7684\u5206\u9875\u53c2\u6570\uff0c\u4e0d\u9700\u63a7\u5236\u5668\u8981\u663e\u793a\u63a5\u6536\n PageDomain pageDomain = TableSupport.buildPageRequest();\n Integer pageNum = pageDomain.getPageNum();\n Integer pageSize = pageDomain.getPageSize();\n if (StringUtils.isNotNull(pageNum) && StringUtils.isNotNull(pageSize))\n {\n String orderBy = SqlUtil.escapeOrderBySql(pageDomain.getOrderBy());\n Boolean reasonable = pageDomain.getReasonable();\n \/\/ \u771f\u6b63\u4f7f\u7528pageHelper\u8fdb\u884c\u5206\u9875\u7684\u4f4d\u7f6e\n PageHelper.startPage(pageNum, pageSize, orderBy).setReasonable(reasonable);\n }\n}<\/code><\/pre>\nPageHelper.startPage(pageNum, pageSize, orderBy).setReasonable(reasonable)<\/code>\u7684\u53c2\u6570\u5206\u522b\u662f\uff1a<\/p>\n\npageNum<\/code>\uff1a\u9875\u6570<\/li>\npageSize<\/code>\uff1a\u6bcf\u9875\u6570\u636e\u91cf<\/li>\norderBy<\/code>\uff1a\u6392\u5e8f<\/li>\nreasonable<\/code>\uff1a\u5206\u9875\u5408\u7406\u5316\uff0c\u5bf9\u4e8e\u4e0d\u5408\u7406\u7684\u5206\u9875\u53c2\u6570\u81ea\u52a8\u5904\u7406\uff0c\u6bd4\u5982\u4f20\u9012pageNum\u662f\u5c0f\u4e8e0\uff0c\u4f1a\u9ed8\u8ba4\u8bbe\u7f6e\u4e3a1.<\/li>\n<\/ul>\n\u7ee7\u7eed\u8ddf\u8e2a\uff0c\u8fde\u7eed\u70b9\u51fbstartpage<\/code>\u6784\u9020\u65b9\u6cd5\u5230\u8fbe\u5982\u4e0b\u4f4d\u7f6e\uff1a<\/p>\n\/**\n * \u5f00\u59cb\u5206\u9875\n *\n * @param pageNum \u9875\u7801\n * @param pageSize \u6bcf\u9875\u663e\u793a\u6570\u91cf\n * @param count \u662f\u5426\u8fdb\u884ccount\u67e5\u8be2\n * @param reasonable \u5206\u9875\u5408\u7406\u5316,null\u65f6\u7528\u9ed8\u8ba4\u914d\u7f6e\n * @param pageSizeZero true\u4e14pageSize=0\u65f6\u8fd4\u56de\u5168\u90e8\u7ed3\u679c\uff0cfalse\u65f6\u5206\u9875,null\u65f6\u7528\u9ed8\u8ba4\u914d\u7f6e\n *\/\npublic static <E> Page<E> startPage(int pageNum, int pageSize, boolean count, Boolean reasonable, Boolean pageSizeZero) {\n Page<E> page = new Page<E>(pageNum, pageSize, count);\n page.setReasonable(reasonable);\n page.setPageSizeZero(pageSizeZero);\n \/\/ 1\u3001\u83b7\u53d6\u672c\u5730\u5206\u9875\n Page<E> oldPage = getLocalPage();\n if (oldPage != null && oldPage.isOrderByOnly()) {\n page.setOrderBy(oldPage.getOrderBy());\n }\n \/\/ 2\u3001\u8bbe\u7f6e\u672c\u5730\u5206\u9875\n setLocalPage(page);\n return page;\n}<\/code><\/pre>\n\u5230\u8fbe\u7ec8\u70b9\u4f4d\u7f6e\u4e86\uff0c\u5206\u522b\u662f\uff1agetLocalPage()<\/code>\u548csetLocalPage(page)<\/code>\uff0c\u5206\u522b\u6765\u770b\u4e0b\uff1a<\/p>\ngetLocalPage()<\/strong><\/p>\n\u8fdb\u5165\u65b9\u6cd5\uff1a<\/p>\n
\/**\n * \u83b7\u53d6 Page \u53c2\u6570\n *\n * @return\n *\/\npublic static <T> Page<T> getLocalPage() {\n return LOCAL_PAGE.get();\n}<\/code><\/pre>\n\u770b\u770b\u5e38\u91cfLOCAL_PAGE<\/code>\u662f\u4e2a\u4ec0\u4e48\u8def\u6570\uff1f<\/p>\nprotected static final ThreadLocal<Page> LOCAL_PAGE = new ThreadLocal<Page>();<\/code><\/pre>\n\u597d\u5bb6\u4f19\uff0c\u662fThreadLocal\uff0c\u5b66\u8fc7java\u57fa\u7840\u7684\u90fd\u77e5\u9053\u5427\uff0c\u72ec\u5c5e\u4e8e\u6bcf\u4e2a\u7ebf\u7a0b\u7684\u672c\u5730\u7f13\u5b58\u5bf9\u8c61\u3002<\/p>\n
\u5f53\u4e00\u4e2a\u8bf7\u6c42\u6765\u7684\u65f6\u5019\uff0c\u4f1a\u83b7\u53d6\u6301\u6709\u5f53\u524d\u8bf7\u6c42\u7684\u7ebf\u7a0b\u7684ThreadLocal\uff0c\u8c03\u7528LOCAL_PAGE.get()<\/code>\uff0c\u67e5\u770b\u5f53\u524d\u7ebf\u7a0b\u662f\u5426\u6709\u672a\u6267\u884c\u7684\u5206\u9875\u914d\u7f6e\u3002<\/p>\nsetLocalPage(page)<\/strong><\/p>\n\u6b64\u65b9\u6cd5\u663e\u800c\u6613\u89c1\uff0c\u8bbe\u7f6e\u7ebf\u7a0b\u7684\u5206\u9875\u914d\u7f6e\uff1a<\/p>\n
protected static void setLocalPage(Page page) {\n LOCAL_PAGE.set(page);\n}<\/code><\/pre>\n\u5c0f\u7ed3<\/strong><\/h5>\n\u7ecf\u8fc7\u524d\u9762\u7684\u5206\u6790\uff0c\u6211\u4eec\u53d1\u73b0\uff0c\u95ee\u9898\u4f3c\u4e4e\u5c31\u662f\u8fd9\u4e2aThreadLocal\u5bfc\u81f4\u7684\u3002<\/p>\n
\u662f\u5426\u5728\u4f7f\u7528\u5b8c\u4e4b\u540e\u6ca1\u6709\u8fdb\u884c\u6e05\u7406\uff1f\u5bfc\u81f4\u4e0b\u4e00\u6b21\u6b64\u7ebf\u7a0b\u518d\u6b21\u5904\u7406\u8bf7\u6c42\u65f6\uff0c\u8fd8\u5728\u4f7f\u7528\u4e4b\u524d\u7684\u914d\u7f6e\uff1f<\/p>\n
\u6211\u4eec\u5e26\u7740\u7591\u95ee\uff0c\u770b\u770bmybatis\u65f6\u5982\u4f55\u4f7f\u7528pageHelper\u7684\u3002<\/p>\n
mybatis\u4f7f\u7528pageHelper\u5206\u6790<\/strong><\/p>\n\u6211\u4eec\u9700\u8981\u5173\u6ce8\u7684\u5c31\u662fmybatis\u5728\u4f55\u65f6\u4f7f\u7528\u7684\u8fd9\u4e2aThreadLocal\uff0c\u4e5f\u5c31\u662f\u4f55\u65f6\u5c06\u5206\u9875\u9910\u6570\u83b7\u53d6\u5230\u7684\u3002<\/p>\n
\u524d\u9762\u63d0\u5230\u8fc7\uff0c\u901a\u8fc7PageHelper\u7684startPage()<\/code>\u65b9\u6cd5\u8fdb\u884cpage\u7f13\u5b58\u7684\u8bbe\u7f6e\uff0c\u5f53\u7a0b\u5e8f\u6267\u884csql\u63a5\u53e3mapper\u7684\u65b9\u6cd5\u65f6\uff0c\u5c31\u4f1a\u88ab\u62e6\u622a\u5668PageInterceptor<\/code>\u62e6\u622a\u5230\u3002<\/p>\nPageHelper\u5176\u5b9e\u5c31\u662fmybatis\u7684\u5206\u9875\u63d2\u4ef6\uff0c\u5176\u5b9e\u73b0\u539f\u7406\u5c31\u662f\u901a\u8fc7\u62e6\u622a\u5668\u7684\u65b9\u5f0f\uff0cpageHelper\u901aPageInterceptor<\/code>\u5b9e\u73b0\u5206\u9875\u6548\u679c\uff0c\u6211\u4eec\u53ea\u5173\u6ce8intercept\u65b9\u6cd5\uff1a<\/p>\n@Override\npublic Object intercept(Invocation invocation) throws Throwable {\n try {\n Object[] args = invocation.getArgs();\n MappedStatement ms = (MappedStatement) args[0];\n Object parameter = args[1];\n RowBounds rowBounds = (RowBounds) args[2];\n ResultHandler resultHandler = (ResultHandler) args[3];\n Executor executor = (Executor) invocation.getTarget();\n CacheKey cacheKey;\n BoundSql boundSql;\n \/\/ \u7531\u4e8e\u903b\u8f91\u5173\u7cfb\uff0c\u53ea\u4f1a\u8fdb\u5165\u4e00\u6b21\n if (args.length == 4) {\n \/\/4 \u4e2a\u53c2\u6570\u65f6\n boundSql = ms.getBoundSql(parameter);\n cacheKey = executor.createCacheKey(ms, parameter, rowBounds, boundSql);\n } else {\n \/\/6 \u4e2a\u53c2\u6570\u65f6\n cacheKey = (CacheKey) args[4];\n boundSql = (BoundSql) args[5];\n }\n checkDialectExists();\n \/\/\u5bf9 boundSql \u7684\u62e6\u622a\u5904\u7406\n if (dialect instanceof BoundSqlInterceptor.Chain) {\n boundSql = ((BoundSqlInterceptor.Chain) dialect).doBoundSql(BoundSqlInterceptor.Type.ORIGINAL, boundSql, cacheKey);\n }\n List resultList;\n \/\/\u8c03\u7528\u65b9\u6cd5\u5224\u65ad\u662f\u5426\u9700\u8981\u8fdb\u884c\u5206\u9875\uff0c\u5982\u679c\u4e0d\u9700\u8981\uff0c\u76f4\u63a5\u8fd4\u56de\u7ed3\u679c\n if (!dialect.skip(ms, parameter, rowBounds)) {\n \/\/\u5224\u65ad\u662f\u5426\u9700\u8981\u8fdb\u884c count \u67e5\u8be2\n if (dialect.beforeCount(ms, parameter, rowBounds)) {\n \/\/\u67e5\u8be2\u603b\u6570\n Long count = count(executor, ms, parameter, rowBounds, null, boundSql);\n \/\/\u5904\u7406\u67e5\u8be2\u603b\u6570\uff0c\u8fd4\u56de true \u65f6\u7ee7\u7eed\u5206\u9875\u67e5\u8be2\uff0cfalse \u65f6\u76f4\u63a5\u8fd4\u56de\n if (!dialect.afterCount(count, parameter, rowBounds)) {\n \/\/\u5f53\u67e5\u8be2\u603b\u6570\u4e3a 0 \u65f6\uff0c\u76f4\u63a5\u8fd4\u56de\u7a7a\u7684\u7ed3\u679c\n return dialect.afterPage(new ArrayList(), parameter, rowBounds);\n }\n }\n resultList = ExecutorUtil.pageQuery(dialect, executor,\n ms, parameter, rowBounds, resultHandler, boundSql, cacheKey);\n } else {\n \/\/rowBounds\u7528\u53c2\u6570\u503c\uff0c\u4e0d\u4f7f\u7528\u5206\u9875\u63d2\u4ef6\u5904\u7406\u65f6\uff0c\u4ecd\u7136\u652f\u6301\u9ed8\u8ba4\u7684\u5185\u5b58\u5206\u9875\n resultList = executor.query(ms, parameter, rowBounds, resultHandler, cacheKey, boundSql);\n }\n return dialect.afterPage(resultList, parameter, rowBounds);\n } finally {\n if(dialect != null){\n dialect.afterAll();\n }\n }\n}<\/code><\/pre>\n\u5982\u4e0a\u6240\u793a\u662fintecept\u7684\u5168\u90e8\u4ee3\u7801\uff0c\u6211\u4eec\u4e0b\u9762\u53ea\u5173\u6ce8\u51e0\u4e2a\u7ec8\u70b9\u4f4d\u7f6e\uff1a<\/p>\n
\u8bbe\u7f6e\u5206\u9875\uff1adialect.skip(ms, parameter, rowBounds)<\/strong><\/h5>\n\u6b64\u5904\u7684skip\u65b9\u6cd5\u8fdb\u884c\u8bbe\u7f6e\u5206\u9875\u53c2\u6570\uff0c\u5185\u90e8\u8c03\u7528\u65b9\u6cd5\uff1a<\/p>\n
Page page = pageParams.getPage(parameterObject, rowBounds);<\/code><\/pre>\n\u7ee7\u7eed\u8ddf\u8e2agetPage()<\/code>\uff0c\u53d1\u73b0\u6b64\u65b9\u6cd5\u7684\u7b2c\u4e00\u884c\u5c31\u83b7\u53d6\u4e86ThreadLocal\u7684\u503c\uff1a<\/p>\nPage page = PageHelper.getLocalPage();<\/code><\/pre>\n\u7edf\u8ba1\u6570\u91cf\uff1adialect.beforeCount(ms, parameter, rowBounds)<\/strong><\/h5>\n\u6211\u4eec\u90fd\u77e5\u9053\uff0c\u5206\u9875\u9700\u8981\u83b7\u53d6\u8bb0\u5f55\u603b\u6570\uff0c\u6240\u4ee5\uff0c\u8fd9\u4e2a\u62e6\u622a\u5668\u4f1a\u5728\u5206\u9875\u524d\u5148\u8fdb\u884ccount\u64cd\u4f5c\u3002<\/p>\n
\u5982\u679ccount\u4e3a0\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\uff0c\u4e0d\u8fdb\u884c\u5206\u9875\uff1a<\/p>\n
\/\/\u5904\u7406\u67e5\u8be2\u603b\u6570\uff0c\u8fd4\u56de true \u65f6\u7ee7\u7eed\u5206\u9875\u67e5\u8be2\uff0cfalse \u65f6\u76f4\u63a5\u8fd4\u56de\nif (!dialect.afterCount(count, parameter, rowBounds)) {\n \/\/\u5f53\u67e5\u8be2\u603b\u6570\u4e3a 0 \u65f6\uff0c\u76f4\u63a5\u8fd4\u56de\u7a7a\u7684\u7ed3\u679c\n return dialect.afterPage(new ArrayList(), parameter, rowBounds);\n}<\/code><\/pre>\nafterPage\u5176\u5b9e\u662f\u5bf9\u5206\u9875\u7ed3\u679c\u7684\u5c01\u88c5\u65b9\u6cd5\uff0c\u5373\u4f7f\u4e0d\u5206\u9875\uff0c\u4e5f\u4f1a\u6267\u884c\uff0c\u53ea\u4e0d\u8fc7\u8fd4\u56de\u7a7a\u5217\u8868\u3002<\/p>\n
\u5206\u9875\uff1aExecutorUtil.pageQuery<\/strong><\/h5>\n\u5728\u5904\u7406\u5b8ccount\u65b9\u6cd5\u540e\uff0c\u5c31\u662f\u771f\u6b63\u7684\u8fdb\u884c\u5206\u9875\u4e86\uff1a<\/p>\n
resultList = ExecutorUtil.pageQuery(dialect, executor,\n ms, parameter, rowBounds, resultHandler, boundSql, cacheKey);<\/code><\/pre>\n\u6b64\u65b9\u6cd5\u5728\u6267\u884c\u5206\u9875\u4e4b\u524d\uff0c\u4f1a\u5224\u65ad\u662f\u5426\u6267\u884c\u5206\u9875\uff0c\u4f9d\u636e\u5c31\u662f\u524d\u9762\u6211\u4eec\u901a\u8fc7ThreadLocal\u7684\u83b7\u53d6\u7684page\u3002<\/p>\n
\u5f53\u7136\uff0c\u4e0d\u5206\u9875\u7684\u67e5\u8be2\uff0c\u4ee5\u53ca\u65b0\u589e\u548c\u66f4\u65b0\u4e0d\u4f1a\u8d70\u5230\u8fd9\u4e2a\u65b9\u6cd5\u5f53\u4e2d\u3002<\/p>\n
\u975e\u5206\u9875\uff1aexecutor.query<\/strong><\/h5>\n\u800c\u662f\u4f1a\u8d70\u5230\u4e0b\u9762\u7684\u8fd9\u4e2a\u5206\u652f\uff1a<\/p>\n
resultList = executor.query(ms, parameter, rowBounds, resultHandler, cacheKey, boundSql);<\/code><\/pre>\n\u6211\u4eec\u53ef\u4ee5\u601d\u8003\u4e00\u4e0b\uff0c\u5982\u679cThreadLoad\u5728\u4f7f\u7528\u540e\u6ca1\u6709\u88ab\u6e05\u9664\uff0c\u5f53\u6267\u884c\u975e\u5206\u9875\u7684\u65b9\u6cd5\u65f6\uff0c\u90a3\u4e48\u5c31\u4f1a\u5c06Limit\u62fc\u63a5\u5230sql\u540e\u9762\u3002<\/p>\n
\u4e3a\u4ec0\u4e48\u4e0d\u5206\u4e5f\u5f97\u4e5f\u4f1a\u62fc\u63a5\uff1f\u6211\u4eec\u56de\u5934\u770b\u4e0b\u524d\u9762\u63d0\u5230\u7684dialect.skip(ms, parameter, rowBounds)<\/code>:<\/p>\n![\"\"](\"https:\/\/segmentfault.com\/img\/bVdbtAY\" "\\"\\"")
<\/p>\n
\u5982\u4e0a\u6240\u793a\uff0c\u53ea\u8981page\u88ab\u83b7\u53d6\u5230\u4e86\uff0c\u90a3\u4e48\u8fd9\u4e2asql\uff0c\u5c31\u4f1a\u8d70\u524d\u9762\u63d0\u5230\u7684ExecutorUtil.pageQuery<\/code>\u5206\u9875\u903b\u8f91\uff0c\u6700\u7ec8\u5bfc\u81f4\u51fa\u73b0\u4e0d\u53ef\u9884\u6599\u7684\u60c5\u51b5\u3002<\/p>\n\u5176\u5b9ePageHelper\u5bf9\u4e8e\u5206\u9875\u540e\u7684ThreaLocal\u662f\u6709\u6e05\u9664\u5904\u7406\u7684\u3002<\/p>\n
\u6e05\u9664TheadLocal<\/strong><\/h5>\n\u5728intercept\u65b9\u6cd5\u7684\u6700\u540e\uff0c\u4f1a\u5728sql\u65b9\u6cd5\u6267\u884c\u5b8c\u6210\u540e\uff0c\u6e05\u7406page\u7f13\u5b58\uff1a<\/p>\n
finally {\n if(dialect != null){\n dialect.afterAll();\n }\n}<\/code><\/pre>\n\u770b\u770b\u8fd9\u4e2aafterAll()<\/code>\u65b9\u6cd5:<\/p>\n@Override\npublic void afterAll() {\n \/\/\u8fd9\u4e2a\u65b9\u6cd5\u5373\u4f7f\u4e0d\u5206\u9875\u4e5f\u4f1a\u88ab\u6267\u884c\uff0c\u6240\u4ee5\u8981\u5224\u65ad null\n AbstractHelperDialect delegate = autoDialect.getDelegate();\n if (delegate != null) {\n delegate.afterAll();\n autoDialect.clearDelegate();\n }\n clearPage();\n}<\/code><\/pre>\n\u53ea\u5173\u6ce8 clearPage()<\/code>\uff1a<\/p>\n\/**\n * \u79fb\u9664\u672c\u5730\u53d8\u91cf\n *\/\npublic static void clearPage() {\n LOCAL_PAGE.remove();\n}<\/code><\/pre>\n\u5c0f\u7ed3<\/strong><\/h5>\n\u5230\u6b64\u4e3a\u6b62\uff0c\u5173\u4e8ePageHelper\u7684\u4f7f\u7528\u65b9\u5f0f\u5c31\u8bb2\u89e3\u5b8c\u4e86\u3002<\/p>\n
\u6574\u4f53\u770b\u4e0b\u6765\uff0c\u4f3c\u4e4e\u4e0d\u4f1a\u5b58\u5728\u4ec0\u4e48\u95ee\u9898\uff0c\u4f46\u662f\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u96c6\u4e2d\u6781\u7aef\u60c5\u51b5\uff1a<\/p>\n
\u5982\u679c\u4f7f\u7528\u4e86startPage()<\/code>\uff0c\u4f46\u662f\u6ca1\u6709\u6267\u884c\u5bf9\u5e94\u7684sql\uff0c\u90a3\u4e48\u5c31\u8868\u660e\uff0c\u5f53\u524d\u7ebf\u7a0bThreadLocal\u88ab\u8bbe\u7f6e\u4e86\u5206\u9875\u53c2\u6570\uff0c\u53ef\u662f\u6ca1\u6709\u88ab\u4f7f\u7528\uff0c\u5f53\u4e0b\u4e00\u4e2a\u4f7f\u7528\u6b64\u7ebf\u7a0b\u7684\u8bf7\u6c42\u6765\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0\u95ee\u9898\u3002<\/p>\n\u5982\u679c\u7a0b\u5e8f\u5728\u6267\u884csql\u524d\uff0c\u53d1\u751f\u5f02\u5e38\u4e86\uff0c\u5c31\u6ca1\u529e\u6cd5\u6267\u884cfinally\u5f53\u4e2d\u7684clearPage()<\/code>\u65b9\u6cd5\uff0c\u4e5f\u4f1a\u9020\u6210\u7ebf\u7a0b\u7684ThreadLocal\u88ab\u6c61\u67d3\u3002<\/p>\n\u6240\u4ee5\uff0c\u5b98\u65b9\u7ed9\u6211\u4eec\u7684\u5efa\u8bae\uff0c\u5728\u4f7f\u7528PageHelper\u8fdb\u884c\u5206\u9875\u65f6\uff0c\u6267\u884csql\u7684\u4ee3\u7801\u8981\u7d27\u8ddfstartPage()<\/code>\u65b9\u6cd5\u3002<\/p>\n\u9664\u6b64\u4e4b\u5916\uff0c\u6211\u4eec\u53ef\u4ee5\u624b\u52a8\u8c03\u7528clearPage()<\/code>\u65b9\u6cd5\uff0c\u5728\u5b58\u5728\u95ee\u9898\u7684\u65b9\u6cd5\u4e4b\u524d\u3002<\/p>\n\u9700\u8981\u6ce8\u610f\uff1a\u4e0d\u8981\u5206\u9875\u7684\u65b9\u6cd5\u524d\u624b\u52a8\u8c03\u7528clearPage\uff0c\u5c06\u4f1a\u5bfc\u81f4\u4f60\u7684\u5206\u9875\u51fa\u73b0\u95ee\u9898\u3002<\/p><\/blockquote>\n
\u8fd8\u6709\u4eba\u95ee\u4e3a\u4ec0\u4e48\u4e0d\u662f\u6bcf\u6b21\u8bf7\u6c42\u90fd\u51fa\u9519\uff1f<\/strong><\/h3>\n\u8fd9\u4e2a\u5176\u5b9e\u53d6\u51b3\u4e8e\u6211\u4eec\u542f\u52a8\u670d\u52a1\u6240\u4f7f\u7528\u7684\u5bb9\u5668\uff0c\u6bd4\u5982tomcat\uff0c\u5728\u5176\u5185\u90e8\u5904\u7406\u8bf7\u6c42\u662f\u901a\u8fc7\u7ebf\u7a0b\u6c60\u7684\u65b9\u5f0f\u3002\u751a\u81f3\u73b0\u5728\u7684\u5f88\u591a\u5bb9\u5668\u662f\u57fa\u4e8enetty\u7684\uff0c\u90fd\u662f\u901a\u8fc7\u7ebf\u7a0b\u6c60\uff0c\u590d\u7528\u7ebf\u7a0b\u6765\u589e\u52a0\u670d\u52a1\u7684\u5e76\u53d1\u91cf\u3002<\/p>\n
\u5047\u8bbe\u7ebf\u7a0b1\u6301\u6709\u6ca1\u6709\u88ab\u6e05\u9664\u7684page\u53c2\u6570\uff0c\u4e0d\u65ad\u8c03\u7528\u540c\u4e00\u4e2a\u65b9\u6cd5\uff0c\u540e\u9762\u4e24\u4e2a\u8bf7\u6c42\u4f7f\u7528\u7684\u662f\u7ebf\u7a0b2\u548c\u7ebf\u7a0b3\u6ca1\u6709\u95ee\u9898\uff0c\u518d\u4e00\u4e2a\u8bf7\u6c42\u8f6e\u5230\u7ebf\u7a0b1\u4e86\uff0c\u6b64\u65f6\u5c31\u4f1a\u51fa\u73b0\u95ee\u9898\u4e86\u3002<\/p>\n
\u603b\u7ed3<\/strong><\/p>\n\u5173\u4e8ePageHelper\u7684\u4ecb\u7ecd\u5c31\u8fd9\u4e48\u591a\uff0c\u771f\u7684\u662f\u6298\u78e8\u6211\u597d\u51e0\u5929\uff0c\u8981\u4e0d\u662f\u9879\u76ee\u7d27\u6025\uff0c\u6765\u4e0d\u53ca\u66ff\u6362\uff0c\u6211\u4e00\u5b9a\u4e0d\u4f1a\u4f7f\u7528\u8fd9\u4e2a\u7ec4\u4ef6\u3002<\/p>\n
\u83ab\u540d\u5176\u5999\u7684\u5c31\u4f1a\u6709\u4e2a\u65b9\u6cd5\u51fa\u73b0\u95ee\u9898\uff0c\u4e00\u901a\u6392\u67e5\uff0c\u53d1\u73b0\u90fd\u662f\u8fd9\u4e2aPageHelper\u5bfc\u81f4\u7684\u3002\u867d\u7136\u6211\u5df2\u7ecf\u5168\u5c40\u641c\u7d22\u4f7f\u7528\u7684\u5730\u65b9\uff0c\u4fdd\u8bc1startPage()<\/code>\u540e\u7d27\u8ddfsql\u547d\u4ee4\uff0c\u4f46\u662f\u4ecd\u7136\u6709\u5acc\u72af\u6f5c\u9003\uff0c\u53ea\u80fd\u5728\u6709\u95ee\u9898\u7684\u65b9\u6cd5\u4f7f\u7528clearPage()<\/code>\u6765\u6253\u8865\u4e01\u3002<\/p>\n\u867d\u7136PageHelper\u7ed9\u6211\u5e26\u6765\u4e00\u4e9b\u56f0\u6270\uff0c\u8017\u8d39\u4e86\u4e00\u5b9a\u7684\u65f6\u95f4\uff0c\u4f46\u662f\u5b9a\u4f4d\u95ee\u9898\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4e5f\u5b66\u4e60\u4e86mybatis\u548cpagehepler\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u5bf9\u4e8e\u70ed\u7231\u6e90\u7801\u9605\u8bfb\u7684\u540c\u5b66\u6765\u8bf4\u8fd8\u662f\u6709\u4e00\u5b9a\u7684\u63d0\u5347\u7684\u3002<\/p>\n
\u539f\u6587\uff1ajuejin.cn\/post\/7125356642366914596<\/p>\n
\u66f4\u591a\u6587\u7ae0\u63a8\u8350\uff1a<\/strong><\/p>\n1.Spring Boot 3.x \u6559\u7a0b\uff0c\u592a\u5168\u4e86\uff01<\/a><\/p>\n2.2,000+ \u9053 Java\u9762\u8bd5\u9898\u53ca\u7b54\u6848\u6574\u7406(2024\u6700\u65b0\u7248)<\/a><\/p>\n
else if (UserConstants.NOT_UNIQUE.equals(userService.checkUserNameUnique(username))\n||"\u533f\u540d\u7528\u6237".equals(username)){\n \/\/ \u6ce8\u518c\u7528\u6237\u5df2\u5b58\u5728\n msg = "\u6ce8\u518c\u7528\u6237'" + username + "'\u5931\u8d25";\n}<\/code><\/pre>\n\u5982\u4e0a\u6240\u793a: checkUserNameUnique(username)<\/code>\u7528\u6765\u9a8c\u8bc1\u6570\u636e\u5e93\u662f\u5426\u5b58\u5728\u7528\u6237\u540d:<\/p>\n<select id="checkUserNameUnique" parameterType="String" resultType="int">\n select count(1) from sys_user where user_name = #{userName} limit 1\n<\/select><\/code><\/pre>\n\u6b63\u5e38\u6765\u8bf4,\u662f\u4e0d\u4f1a\u6709\u95ee\u9898\u7684,\u90a3\u4e48\u539f\u56e0\u6211\u4eec\u540e\u9762\u8bb2,\u63a5\u7740\u770b\u4e0b\u4e00\u4e2a\u95ee\u9898\u3002<\/p>\n
\u63a8\u8350\u4e00\u4e2a\u5f00\u6e90\u514d\u8d39\u7684 Spring Boot \u5b9e\u6218\u9879\u76ee\uff1a<\/p>\n
https:\/\/github.com\/javastacks\/spring-boot-best-practice<\/a><\/p><\/blockquote>\n\u67e5\u8be2\u5168\u90e8\u5206\u7c7b\u7684\u4e0b\u62c9\u5217\u8868\u53ea\u80fd\u67e5\u51fa5\u6761\u6570\u636e\uff1f<\/strong><\/h5>\n<\/p>\n
\u5982\u4e0a\u6240\u793a,\u660e\u660e\u6709\u5341\u591a\u4e2a\u7ed3\u679c,\u600e\u4e48\u53ea\u80fd\u8fd4\u56de5\u4e2a?\u6211\u4e5f\u6ca1\u6709\u6dfb\u52a0\u5206\u9875\u53c2\u6570\u554a\uff1f<\/p>\n
\u76f8\u4fe1\u7528\u8fc7PageHelper\u7684\u540c\u5b66\u5df2\u7ecf\u77e5\u9053\u95ee\u9898\u51fa\u5728\u54ea\u91cc\u4e86\u3002<\/p>\n
\u4fee\u6539\u7528\u6237\u5bc6\u7801\u62a5\u9519?<\/strong><\/h5>\n\u5f53\u7ba1\u7406\u5458\u5728\u540e\u53f0\u754c\u9762\u91cd\u7f6e\u7528\u6237\u7684\u5bc6\u7801\u7684\u65f6\u5019\uff0c\u5c45\u7136\u62a5\u9519\u4e86\uff1f<\/p>\n
\u62a5\u9519\u4fe1\u606f\u6e05\u6670\u7684\u544a\u8bc9\u4e86\u6211\uff1asql\u8bed\u53e5\u5f02\u5e38,update\u8bed\u53e5\u4e0d\u8ba4\u8bc6 \u201cLimit 5\u201d<\/p>\n
\u5230\u6b64\u4e3a\u6b62\uff0c\u62a5\u9519\u4fe1\u606f\u5df2\u7ecf\u544a\u8bc9\u4e86\u6211\uff0c\u6211\u7684sql\u88ab\u62fc\u63a5\u4e86\u8be5\u6b7b\u7684\u201climit\u201d\u5206\u9875\u53c2\u6570\u3002<\/p>\n
\u5c0f\u7ed3<\/strong><\/h5>\n\u4e0a\u9762\u63d0\u5230\u7684\u51e0\u4e2a\u53ea\u662f\u51b0\u5c71\u4e00\u89d2\uff0c\u5728\u6211\u4f7f\u7528\u7684\u8fc7\u7a0b\u4e2d\uff0c\u8fd8\u6709\u5404\u79cd\u6d89\u53ca\u5230sql\u7684\u5730\u65b9\uff0c\u4f1a\u56e0\u4e3a\u8fd9\u4e2a\u5206\u9875\u53c2\u6570\u5bfc\u81f4\u7684\u95ee\u9898\uff0c\u6211\u53ef\u4ee5\u5206\u4e3a\u4e24\u79cd\uff1a<\/p>\n
1\uff09\u76f4\u63a5\u5bfc\u81f4\u62a5\u9519\u7684\uff1a\u660e\u786e\u62a5\u9519\u539f\u56e0\u7684<\/strong><\/p>\n\u6bd4\u5982insert\u3001update\u8bed\u53e5\u7b49\uff0c\u4e0d\u652f\u6301limit\uff0c\u4f1a\u76f4\u63a5\u62a5\u9519\u3002<\/p>\n
2\uff09\u5bfc\u81f4\u4e1a\u52a1\u903b\u8f91\u9519\u8bef\uff0c\u4f46\u662f\u4ee3\u7801\u6ca1\u6709\u9519\u8bef\u63d0\u793a<\/strong><\/p>\n\u5982\u6211\u4e0a\u9762\u63d0\u5230\u7684\u7528\u6237\u53ef\u4ee5\u91cd\u590d\u6ce8\u518c\uff0c\u5374\u6ca1\u6709\u62a5\u9519\uff0c\u5b9e\u9645\u5728\u4ee3\u7801\u5f53\u4e2d\u662f\u6709\u62a5\u9519\u7684\uff0c\u4f46\u662f\u5f53\u524d\u65b9\u6cd5\u5bf9\u5f02\u5e38\u8fdb\u884c\u4e86throw\uff0c\u6700\u7ec8\u88ab\u5168\u5c40\u5f02\u5e38\u6355\u83b7\u4e86\u3002<\/p>\n
\u4e0d\u5206\u9875\u7684sql\u88ab\u62fc\u63a5\u4e86limit\uff0c\u5bfc\u81f4\u6ca1\u6709\u62a5\u9519\uff0c\u4f46\u662f\u6570\u636e\u8fd4\u56de\u91cf\u9519\u8bef\u3002<\/p>\n
\u5f02\u5e38\u4e0d\u662f\u6bcf\u6b21\u51fa\u73b0\uff0c\u662f\u6709\u4e00\u5b9a\u7eaa\u5f8b\u7684\uff0c\u4f46\u662f\u89e6\u53d1\u51e0\u7387\u8f83\u9ad8\uff0c\u539f\u56e0\u5728\u540e\u9762\u4f1a\u9010\u6e10\u8131\u51fa\u3002<\/p><\/blockquote>\n
PageHelper\u662f\u600e\u4e48\u505a\u5230\u4e0a\u9762\u7684\u95ee\u9898\u7684\uff1f<\/strong><\/h3>\nPageHelper\u4f7f\u7528<\/strong><\/h5>\n\u6211\u8fd9\u91cc\u53ea\u8bb2\u89e3\u9879\u76ee\u57fa\u4e8e\u7684\u6846\u67b6\u7684\u4f7f\u7528\u65b9\u5f0f\u3002<\/p>\n
\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
@GetMapping("\/cms\/cmsEssayList")\npublic TableDataInfo cmsEssayList(CmsBlog cmsBlog) {\n \/\/\u72b6\u6001\u4e3a\u53d1\u5e03\n cmsBlog.setStatus("1");\n startPage();\n List<CmsBlog> list = cmsBlogService.selectCmsBlogList(cmsBlog);\n return getDataTable(list);\n}<\/code><\/pre>\n\u4f7f\u7528\u8d77\u6765\u8fd8\u662f\u5f88\u7b80\u5355\u7684\uff0c\u901a\u8fc7 startPage()<\/code>\u6307\u5b9a\u5206\u9875\u53c2\u6570\uff0c\u901a\u8fc7getDataTable(list)<\/code>\u5bf9\u7ed3\u679c\u6570\u636e\u5c01\u88c5\u6210\u5206\u9875\u7684\u683c\u5f0f\u3002<\/p>\n\u6709\u4e9b\u540c\u5b66\u4f1a\u95ee\uff0c\u8fd9\u4e5f\u6ca1\u6ca1\u4f20\u5206\u9875\u53c2\u6570\u554a\uff0c\u5e76\u4e14\u5b9e\u4f53\u7c7b\u5f53\u4e2d\u4e5f\u6ca1\u6709\uff0c\u8fd9\u5c31\u662f\u6bd4\u8f83\u6709\u610f\u601d\u7684\u70b9\uff0c\u4e0b\u4e00\u5c0f\u7ed3\u5c31\u6765\u804a\u804a\u6e90\u7801\u3002<\/p>\n
startPage()\u5e72\u5565\u4e86\uff1f<\/strong><\/h5>\nprotected void startPage(){\n \/\/ \u901a\u8fc7request\u53bb\u83b7\u53d6\u524d\u7aef\u4f20\u9012\u7684\u5206\u9875\u53c2\u6570\uff0c\u4e0d\u9700\u63a7\u5236\u5668\u8981\u663e\u793a\u63a5\u6536\n PageDomain pageDomain = TableSupport.buildPageRequest();\n Integer pageNum = pageDomain.getPageNum();\n Integer pageSize = pageDomain.getPageSize();\n if (StringUtils.isNotNull(pageNum) && StringUtils.isNotNull(pageSize))\n {\n String orderBy = SqlUtil.escapeOrderBySql(pageDomain.getOrderBy());\n Boolean reasonable = pageDomain.getReasonable();\n \/\/ \u771f\u6b63\u4f7f\u7528pageHelper\u8fdb\u884c\u5206\u9875\u7684\u4f4d\u7f6e\n PageHelper.startPage(pageNum, pageSize, orderBy).setReasonable(reasonable);\n }\n}<\/code><\/pre>\nPageHelper.startPage(pageNum, pageSize, orderBy).setReasonable(reasonable)<\/code>\u7684\u53c2\u6570\u5206\u522b\u662f\uff1a<\/p>\n\npageNum<\/code>\uff1a\u9875\u6570<\/li>\npageSize<\/code>\uff1a\u6bcf\u9875\u6570\u636e\u91cf<\/li>\norderBy<\/code>\uff1a\u6392\u5e8f<\/li>\nreasonable<\/code>\uff1a\u5206\u9875\u5408\u7406\u5316\uff0c\u5bf9\u4e8e\u4e0d\u5408\u7406\u7684\u5206\u9875\u53c2\u6570\u81ea\u52a8\u5904\u7406\uff0c\u6bd4\u5982\u4f20\u9012pageNum\u662f\u5c0f\u4e8e0\uff0c\u4f1a\u9ed8\u8ba4\u8bbe\u7f6e\u4e3a1.<\/li>\n<\/ul>\n\u7ee7\u7eed\u8ddf\u8e2a\uff0c\u8fde\u7eed\u70b9\u51fbstartpage<\/code>\u6784\u9020\u65b9\u6cd5\u5230\u8fbe\u5982\u4e0b\u4f4d\u7f6e\uff1a<\/p>\n\/**\n * \u5f00\u59cb\u5206\u9875\n *\n * @param pageNum \u9875\u7801\n * @param pageSize \u6bcf\u9875\u663e\u793a\u6570\u91cf\n * @param count \u662f\u5426\u8fdb\u884ccount\u67e5\u8be2\n * @param reasonable \u5206\u9875\u5408\u7406\u5316,null\u65f6\u7528\u9ed8\u8ba4\u914d\u7f6e\n * @param pageSizeZero true\u4e14pageSize=0\u65f6\u8fd4\u56de\u5168\u90e8\u7ed3\u679c\uff0cfalse\u65f6\u5206\u9875,null\u65f6\u7528\u9ed8\u8ba4\u914d\u7f6e\n *\/\npublic static <E> Page<E> startPage(int pageNum, int pageSize, boolean count, Boolean reasonable, Boolean pageSizeZero) {\n Page<E> page = new Page<E>(pageNum, pageSize, count);\n page.setReasonable(reasonable);\n page.setPageSizeZero(pageSizeZero);\n \/\/ 1\u3001\u83b7\u53d6\u672c\u5730\u5206\u9875\n Page<E> oldPage = getLocalPage();\n if (oldPage != null && oldPage.isOrderByOnly()) {\n page.setOrderBy(oldPage.getOrderBy());\n }\n \/\/ 2\u3001\u8bbe\u7f6e\u672c\u5730\u5206\u9875\n setLocalPage(page);\n return page;\n}<\/code><\/pre>\n\u5230\u8fbe\u7ec8\u70b9\u4f4d\u7f6e\u4e86\uff0c\u5206\u522b\u662f\uff1agetLocalPage()<\/code>\u548csetLocalPage(page)<\/code>\uff0c\u5206\u522b\u6765\u770b\u4e0b\uff1a<\/p>\ngetLocalPage()<\/strong><\/p>\n\u8fdb\u5165\u65b9\u6cd5\uff1a<\/p>\n
\/**\n * \u83b7\u53d6 Page \u53c2\u6570\n *\n * @return\n *\/\npublic static <T> Page<T> getLocalPage() {\n return LOCAL_PAGE.get();\n}<\/code><\/pre>\n\u770b\u770b\u5e38\u91cfLOCAL_PAGE<\/code>\u662f\u4e2a\u4ec0\u4e48\u8def\u6570\uff1f<\/p>\nprotected static final ThreadLocal<Page> LOCAL_PAGE = new ThreadLocal<Page>();<\/code><\/pre>\n\u597d\u5bb6\u4f19\uff0c\u662fThreadLocal\uff0c\u5b66\u8fc7java\u57fa\u7840\u7684\u90fd\u77e5\u9053\u5427\uff0c\u72ec\u5c5e\u4e8e\u6bcf\u4e2a\u7ebf\u7a0b\u7684\u672c\u5730\u7f13\u5b58\u5bf9\u8c61\u3002<\/p>\n
\u5f53\u4e00\u4e2a\u8bf7\u6c42\u6765\u7684\u65f6\u5019\uff0c\u4f1a\u83b7\u53d6\u6301\u6709\u5f53\u524d\u8bf7\u6c42\u7684\u7ebf\u7a0b\u7684ThreadLocal\uff0c\u8c03\u7528LOCAL_PAGE.get()<\/code>\uff0c\u67e5\u770b\u5f53\u524d\u7ebf\u7a0b\u662f\u5426\u6709\u672a\u6267\u884c\u7684\u5206\u9875\u914d\u7f6e\u3002<\/p>\nsetLocalPage(page)<\/strong><\/p>\n\u6b64\u65b9\u6cd5\u663e\u800c\u6613\u89c1\uff0c\u8bbe\u7f6e\u7ebf\u7a0b\u7684\u5206\u9875\u914d\u7f6e\uff1a<\/p>\n
protected static void setLocalPage(Page page) {\n LOCAL_PAGE.set(page);\n}<\/code><\/pre>\n\u5c0f\u7ed3<\/strong><\/h5>\n\u7ecf\u8fc7\u524d\u9762\u7684\u5206\u6790\uff0c\u6211\u4eec\u53d1\u73b0\uff0c\u95ee\u9898\u4f3c\u4e4e\u5c31\u662f\u8fd9\u4e2aThreadLocal\u5bfc\u81f4\u7684\u3002<\/p>\n
\u662f\u5426\u5728\u4f7f\u7528\u5b8c\u4e4b\u540e\u6ca1\u6709\u8fdb\u884c\u6e05\u7406\uff1f\u5bfc\u81f4\u4e0b\u4e00\u6b21\u6b64\u7ebf\u7a0b\u518d\u6b21\u5904\u7406\u8bf7\u6c42\u65f6\uff0c\u8fd8\u5728\u4f7f\u7528\u4e4b\u524d\u7684\u914d\u7f6e\uff1f<\/p>\n
\u6211\u4eec\u5e26\u7740\u7591\u95ee\uff0c\u770b\u770bmybatis\u65f6\u5982\u4f55\u4f7f\u7528pageHelper\u7684\u3002<\/p>\n
mybatis\u4f7f\u7528pageHelper\u5206\u6790<\/strong><\/p>\n\u6211\u4eec\u9700\u8981\u5173\u6ce8\u7684\u5c31\u662fmybatis\u5728\u4f55\u65f6\u4f7f\u7528\u7684\u8fd9\u4e2aThreadLocal\uff0c\u4e5f\u5c31\u662f\u4f55\u65f6\u5c06\u5206\u9875\u9910\u6570\u83b7\u53d6\u5230\u7684\u3002<\/p>\n
\u524d\u9762\u63d0\u5230\u8fc7\uff0c\u901a\u8fc7PageHelper\u7684startPage()<\/code>\u65b9\u6cd5\u8fdb\u884cpage\u7f13\u5b58\u7684\u8bbe\u7f6e\uff0c\u5f53\u7a0b\u5e8f\u6267\u884csql\u63a5\u53e3mapper\u7684\u65b9\u6cd5\u65f6\uff0c\u5c31\u4f1a\u88ab\u62e6\u622a\u5668PageInterceptor<\/code>\u62e6\u622a\u5230\u3002<\/p>\nPageHelper\u5176\u5b9e\u5c31\u662fmybatis\u7684\u5206\u9875\u63d2\u4ef6\uff0c\u5176\u5b9e\u73b0\u539f\u7406\u5c31\u662f\u901a\u8fc7\u62e6\u622a\u5668\u7684\u65b9\u5f0f\uff0cpageHelper\u901aPageInterceptor<\/code>\u5b9e\u73b0\u5206\u9875\u6548\u679c\uff0c\u6211\u4eec\u53ea\u5173\u6ce8intercept\u65b9\u6cd5\uff1a<\/p>\n@Override\npublic Object intercept(Invocation invocation) throws Throwable {\n try {\n Object[] args = invocation.getArgs();\n MappedStatement ms = (MappedStatement) args[0];\n Object parameter = args[1];\n RowBounds rowBounds = (RowBounds) args[2];\n ResultHandler resultHandler = (ResultHandler) args[3];\n Executor executor = (Executor) invocation.getTarget();\n CacheKey cacheKey;\n BoundSql boundSql;\n \/\/ \u7531\u4e8e\u903b\u8f91\u5173\u7cfb\uff0c\u53ea\u4f1a\u8fdb\u5165\u4e00\u6b21\n if (args.length == 4) {\n \/\/4 \u4e2a\u53c2\u6570\u65f6\n boundSql = ms.getBoundSql(parameter);\n cacheKey = executor.createCacheKey(ms, parameter, rowBounds, boundSql);\n } else {\n \/\/6 \u4e2a\u53c2\u6570\u65f6\n cacheKey = (CacheKey) args[4];\n boundSql = (BoundSql) args[5];\n }\n checkDialectExists();\n \/\/\u5bf9 boundSql \u7684\u62e6\u622a\u5904\u7406\n if (dialect instanceof BoundSqlInterceptor.Chain) {\n boundSql = ((BoundSqlInterceptor.Chain) dialect).doBoundSql(BoundSqlInterceptor.Type.ORIGINAL, boundSql, cacheKey);\n }\n List resultList;\n \/\/\u8c03\u7528\u65b9\u6cd5\u5224\u65ad\u662f\u5426\u9700\u8981\u8fdb\u884c\u5206\u9875\uff0c\u5982\u679c\u4e0d\u9700\u8981\uff0c\u76f4\u63a5\u8fd4\u56de\u7ed3\u679c\n if (!dialect.skip(ms, parameter, rowBounds)) {\n \/\/\u5224\u65ad\u662f\u5426\u9700\u8981\u8fdb\u884c count \u67e5\u8be2\n if (dialect.beforeCount(ms, parameter, rowBounds)) {\n \/\/\u67e5\u8be2\u603b\u6570\n Long count = count(executor, ms, parameter, rowBounds, null, boundSql);\n \/\/\u5904\u7406\u67e5\u8be2\u603b\u6570\uff0c\u8fd4\u56de true \u65f6\u7ee7\u7eed\u5206\u9875\u67e5\u8be2\uff0cfalse \u65f6\u76f4\u63a5\u8fd4\u56de\n if (!dialect.afterCount(count, parameter, rowBounds)) {\n \/\/\u5f53\u67e5\u8be2\u603b\u6570\u4e3a 0 \u65f6\uff0c\u76f4\u63a5\u8fd4\u56de\u7a7a\u7684\u7ed3\u679c\n return dialect.afterPage(new ArrayList(), parameter, rowBounds);\n }\n }\n resultList = ExecutorUtil.pageQuery(dialect, executor,\n ms, parameter, rowBounds, resultHandler, boundSql, cacheKey);\n } else {\n \/\/rowBounds\u7528\u53c2\u6570\u503c\uff0c\u4e0d\u4f7f\u7528\u5206\u9875\u63d2\u4ef6\u5904\u7406\u65f6\uff0c\u4ecd\u7136\u652f\u6301\u9ed8\u8ba4\u7684\u5185\u5b58\u5206\u9875\n resultList = executor.query(ms, parameter, rowBounds, resultHandler, cacheKey, boundSql);\n }\n return dialect.afterPage(resultList, parameter, rowBounds);\n } finally {\n if(dialect != null){\n dialect.afterAll();\n }\n }\n}<\/code><\/pre>\n\u5982\u4e0a\u6240\u793a\u662fintecept\u7684\u5168\u90e8\u4ee3\u7801\uff0c\u6211\u4eec\u4e0b\u9762\u53ea\u5173\u6ce8\u51e0\u4e2a\u7ec8\u70b9\u4f4d\u7f6e\uff1a<\/p>\n
\u8bbe\u7f6e\u5206\u9875\uff1adialect.skip(ms, parameter, rowBounds)<\/strong><\/h5>\n\u6b64\u5904\u7684skip\u65b9\u6cd5\u8fdb\u884c\u8bbe\u7f6e\u5206\u9875\u53c2\u6570\uff0c\u5185\u90e8\u8c03\u7528\u65b9\u6cd5\uff1a<\/p>\n
Page page = pageParams.getPage(parameterObject, rowBounds);<\/code><\/pre>\n\u7ee7\u7eed\u8ddf\u8e2agetPage()<\/code>\uff0c\u53d1\u73b0\u6b64\u65b9\u6cd5\u7684\u7b2c\u4e00\u884c\u5c31\u83b7\u53d6\u4e86ThreadLocal\u7684\u503c\uff1a<\/p>\nPage page = PageHelper.getLocalPage();<\/code><\/pre>\n\u7edf\u8ba1\u6570\u91cf\uff1adialect.beforeCount(ms, parameter, rowBounds)<\/strong><\/h5>\n\u6211\u4eec\u90fd\u77e5\u9053\uff0c\u5206\u9875\u9700\u8981\u83b7\u53d6\u8bb0\u5f55\u603b\u6570\uff0c\u6240\u4ee5\uff0c\u8fd9\u4e2a\u62e6\u622a\u5668\u4f1a\u5728\u5206\u9875\u524d\u5148\u8fdb\u884ccount\u64cd\u4f5c\u3002<\/p>\n
\u5982\u679ccount\u4e3a0\uff0c\u5219\u76f4\u63a5\u8fd4\u56de\uff0c\u4e0d\u8fdb\u884c\u5206\u9875\uff1a<\/p>\n
\/\/\u5904\u7406\u67e5\u8be2\u603b\u6570\uff0c\u8fd4\u56de true \u65f6\u7ee7\u7eed\u5206\u9875\u67e5\u8be2\uff0cfalse \u65f6\u76f4\u63a5\u8fd4\u56de\nif (!dialect.afterCount(count, parameter, rowBounds)) {\n \/\/\u5f53\u67e5\u8be2\u603b\u6570\u4e3a 0 \u65f6\uff0c\u76f4\u63a5\u8fd4\u56de\u7a7a\u7684\u7ed3\u679c\n return dialect.afterPage(new ArrayList(), parameter, rowBounds);\n}<\/code><\/pre>\nafterPage\u5176\u5b9e\u662f\u5bf9\u5206\u9875\u7ed3\u679c\u7684\u5c01\u88c5\u65b9\u6cd5\uff0c\u5373\u4f7f\u4e0d\u5206\u9875\uff0c\u4e5f\u4f1a\u6267\u884c\uff0c\u53ea\u4e0d\u8fc7\u8fd4\u56de\u7a7a\u5217\u8868\u3002<\/p>\n
\u5206\u9875\uff1aExecutorUtil.pageQuery<\/strong><\/h5>\n\u5728\u5904\u7406\u5b8ccount\u65b9\u6cd5\u540e\uff0c\u5c31\u662f\u771f\u6b63\u7684\u8fdb\u884c\u5206\u9875\u4e86\uff1a<\/p>\n
resultList = ExecutorUtil.pageQuery(dialect, executor,\n ms, parameter, rowBounds, resultHandler, boundSql, cacheKey);<\/code><\/pre>\n\u6b64\u65b9\u6cd5\u5728\u6267\u884c\u5206\u9875\u4e4b\u524d\uff0c\u4f1a\u5224\u65ad\u662f\u5426\u6267\u884c\u5206\u9875\uff0c\u4f9d\u636e\u5c31\u662f\u524d\u9762\u6211\u4eec\u901a\u8fc7ThreadLocal\u7684\u83b7\u53d6\u7684page\u3002<\/p>\n
\u5f53\u7136\uff0c\u4e0d\u5206\u9875\u7684\u67e5\u8be2\uff0c\u4ee5\u53ca\u65b0\u589e\u548c\u66f4\u65b0\u4e0d\u4f1a\u8d70\u5230\u8fd9\u4e2a\u65b9\u6cd5\u5f53\u4e2d\u3002<\/p>\n
\u975e\u5206\u9875\uff1aexecutor.query<\/strong><\/h5>\n\u800c\u662f\u4f1a\u8d70\u5230\u4e0b\u9762\u7684\u8fd9\u4e2a\u5206\u652f\uff1a<\/p>\n
resultList = executor.query(ms, parameter, rowBounds, resultHandler, cacheKey, boundSql);<\/code><\/pre>\n\u6211\u4eec\u53ef\u4ee5\u601d\u8003\u4e00\u4e0b\uff0c\u5982\u679cThreadLoad\u5728\u4f7f\u7528\u540e\u6ca1\u6709\u88ab\u6e05\u9664\uff0c\u5f53\u6267\u884c\u975e\u5206\u9875\u7684\u65b9\u6cd5\u65f6\uff0c\u90a3\u4e48\u5c31\u4f1a\u5c06Limit\u62fc\u63a5\u5230sql\u540e\u9762\u3002<\/p>\n
\u4e3a\u4ec0\u4e48\u4e0d\u5206\u4e5f\u5f97\u4e5f\u4f1a\u62fc\u63a5\uff1f\u6211\u4eec\u56de\u5934\u770b\u4e0b\u524d\u9762\u63d0\u5230\u7684dialect.skip(ms, parameter, rowBounds)<\/code>:<\/p>\n<\/p>\n
\u5982\u4e0a\u6240\u793a\uff0c\u53ea\u8981page\u88ab\u83b7\u53d6\u5230\u4e86\uff0c\u90a3\u4e48\u8fd9\u4e2asql\uff0c\u5c31\u4f1a\u8d70\u524d\u9762\u63d0\u5230\u7684ExecutorUtil.pageQuery<\/code>\u5206\u9875\u903b\u8f91\uff0c\u6700\u7ec8\u5bfc\u81f4\u51fa\u73b0\u4e0d\u53ef\u9884\u6599\u7684\u60c5\u51b5\u3002<\/p>\n\u5176\u5b9ePageHelper\u5bf9\u4e8e\u5206\u9875\u540e\u7684ThreaLocal\u662f\u6709\u6e05\u9664\u5904\u7406\u7684\u3002<\/p>\n
\u6e05\u9664TheadLocal<\/strong><\/h5>\n\u5728intercept\u65b9\u6cd5\u7684\u6700\u540e\uff0c\u4f1a\u5728sql\u65b9\u6cd5\u6267\u884c\u5b8c\u6210\u540e\uff0c\u6e05\u7406page\u7f13\u5b58\uff1a<\/p>\n
finally {\n if(dialect != null){\n dialect.afterAll();\n }\n}<\/code><\/pre>\n\u770b\u770b\u8fd9\u4e2aafterAll()<\/code>\u65b9\u6cd5:<\/p>\n@Override\npublic void afterAll() {\n \/\/\u8fd9\u4e2a\u65b9\u6cd5\u5373\u4f7f\u4e0d\u5206\u9875\u4e5f\u4f1a\u88ab\u6267\u884c\uff0c\u6240\u4ee5\u8981\u5224\u65ad null\n AbstractHelperDialect delegate = autoDialect.getDelegate();\n if (delegate != null) {\n delegate.afterAll();\n autoDialect.clearDelegate();\n }\n clearPage();\n}<\/code><\/pre>\n\u53ea\u5173\u6ce8 clearPage()<\/code>\uff1a<\/p>\n\/**\n * \u79fb\u9664\u672c\u5730\u53d8\u91cf\n *\/\npublic static void clearPage() {\n LOCAL_PAGE.remove();\n}<\/code><\/pre>\n\u5c0f\u7ed3<\/strong><\/h5>\n\u5230\u6b64\u4e3a\u6b62\uff0c\u5173\u4e8ePageHelper\u7684\u4f7f\u7528\u65b9\u5f0f\u5c31\u8bb2\u89e3\u5b8c\u4e86\u3002<\/p>\n
\u6574\u4f53\u770b\u4e0b\u6765\uff0c\u4f3c\u4e4e\u4e0d\u4f1a\u5b58\u5728\u4ec0\u4e48\u95ee\u9898\uff0c\u4f46\u662f\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u96c6\u4e2d\u6781\u7aef\u60c5\u51b5\uff1a<\/p>\n
\u5982\u679c\u4f7f\u7528\u4e86startPage()<\/code>\uff0c\u4f46\u662f\u6ca1\u6709\u6267\u884c\u5bf9\u5e94\u7684sql\uff0c\u90a3\u4e48\u5c31\u8868\u660e\uff0c\u5f53\u524d\u7ebf\u7a0bThreadLocal\u88ab\u8bbe\u7f6e\u4e86\u5206\u9875\u53c2\u6570\uff0c\u53ef\u662f\u6ca1\u6709\u88ab\u4f7f\u7528\uff0c\u5f53\u4e0b\u4e00\u4e2a\u4f7f\u7528\u6b64\u7ebf\u7a0b\u7684\u8bf7\u6c42\u6765\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0\u95ee\u9898\u3002<\/p>\n\u5982\u679c\u7a0b\u5e8f\u5728\u6267\u884csql\u524d\uff0c\u53d1\u751f\u5f02\u5e38\u4e86\uff0c\u5c31\u6ca1\u529e\u6cd5\u6267\u884cfinally\u5f53\u4e2d\u7684clearPage()<\/code>\u65b9\u6cd5\uff0c\u4e5f\u4f1a\u9020\u6210\u7ebf\u7a0b\u7684ThreadLocal\u88ab\u6c61\u67d3\u3002<\/p>\n\u6240\u4ee5\uff0c\u5b98\u65b9\u7ed9\u6211\u4eec\u7684\u5efa\u8bae\uff0c\u5728\u4f7f\u7528PageHelper\u8fdb\u884c\u5206\u9875\u65f6\uff0c\u6267\u884csql\u7684\u4ee3\u7801\u8981\u7d27\u8ddfstartPage()<\/code>\u65b9\u6cd5\u3002<\/p>\n\u9664\u6b64\u4e4b\u5916\uff0c\u6211\u4eec\u53ef\u4ee5\u624b\u52a8\u8c03\u7528clearPage()<\/code>\u65b9\u6cd5\uff0c\u5728\u5b58\u5728\u95ee\u9898\u7684\u65b9\u6cd5\u4e4b\u524d\u3002<\/p>\n\u9700\u8981\u6ce8\u610f\uff1a\u4e0d\u8981\u5206\u9875\u7684\u65b9\u6cd5\u524d\u624b\u52a8\u8c03\u7528clearPage\uff0c\u5c06\u4f1a\u5bfc\u81f4\u4f60\u7684\u5206\u9875\u51fa\u73b0\u95ee\u9898\u3002<\/p><\/blockquote>\n
\u8fd8\u6709\u4eba\u95ee\u4e3a\u4ec0\u4e48\u4e0d\u662f\u6bcf\u6b21\u8bf7\u6c42\u90fd\u51fa\u9519\uff1f<\/strong><\/h3>\n\u8fd9\u4e2a\u5176\u5b9e\u53d6\u51b3\u4e8e\u6211\u4eec\u542f\u52a8\u670d\u52a1\u6240\u4f7f\u7528\u7684\u5bb9\u5668\uff0c\u6bd4\u5982tomcat\uff0c\u5728\u5176\u5185\u90e8\u5904\u7406\u8bf7\u6c42\u662f\u901a\u8fc7\u7ebf\u7a0b\u6c60\u7684\u65b9\u5f0f\u3002\u751a\u81f3\u73b0\u5728\u7684\u5f88\u591a\u5bb9\u5668\u662f\u57fa\u4e8enetty\u7684\uff0c\u90fd\u662f\u901a\u8fc7\u7ebf\u7a0b\u6c60\uff0c\u590d\u7528\u7ebf\u7a0b\u6765\u589e\u52a0\u670d\u52a1\u7684\u5e76\u53d1\u91cf\u3002<\/p>\n
\u5047\u8bbe\u7ebf\u7a0b1\u6301\u6709\u6ca1\u6709\u88ab\u6e05\u9664\u7684page\u53c2\u6570\uff0c\u4e0d\u65ad\u8c03\u7528\u540c\u4e00\u4e2a\u65b9\u6cd5\uff0c\u540e\u9762\u4e24\u4e2a\u8bf7\u6c42\u4f7f\u7528\u7684\u662f\u7ebf\u7a0b2\u548c\u7ebf\u7a0b3\u6ca1\u6709\u95ee\u9898\uff0c\u518d\u4e00\u4e2a\u8bf7\u6c42\u8f6e\u5230\u7ebf\u7a0b1\u4e86\uff0c\u6b64\u65f6\u5c31\u4f1a\u51fa\u73b0\u95ee\u9898\u4e86\u3002<\/p>\n
\u603b\u7ed3<\/strong><\/p>\n\u5173\u4e8ePageHelper\u7684\u4ecb\u7ecd\u5c31\u8fd9\u4e48\u591a\uff0c\u771f\u7684\u662f\u6298\u78e8\u6211\u597d\u51e0\u5929\uff0c\u8981\u4e0d\u662f\u9879\u76ee\u7d27\u6025\uff0c\u6765\u4e0d\u53ca\u66ff\u6362\uff0c\u6211\u4e00\u5b9a\u4e0d\u4f1a\u4f7f\u7528\u8fd9\u4e2a\u7ec4\u4ef6\u3002<\/p>\n
\u83ab\u540d\u5176\u5999\u7684\u5c31\u4f1a\u6709\u4e2a\u65b9\u6cd5\u51fa\u73b0\u95ee\u9898\uff0c\u4e00\u901a\u6392\u67e5\uff0c\u53d1\u73b0\u90fd\u662f\u8fd9\u4e2aPageHelper\u5bfc\u81f4\u7684\u3002\u867d\u7136\u6211\u5df2\u7ecf\u5168\u5c40\u641c\u7d22\u4f7f\u7528\u7684\u5730\u65b9\uff0c\u4fdd\u8bc1startPage()<\/code>\u540e\u7d27\u8ddfsql\u547d\u4ee4\uff0c\u4f46\u662f\u4ecd\u7136\u6709\u5acc\u72af\u6f5c\u9003\uff0c\u53ea\u80fd\u5728\u6709\u95ee\u9898\u7684\u65b9\u6cd5\u4f7f\u7528clearPage()<\/code>\u6765\u6253\u8865\u4e01\u3002<\/p>\n\u867d\u7136PageHelper\u7ed9\u6211\u5e26\u6765\u4e00\u4e9b\u56f0\u6270\uff0c\u8017\u8d39\u4e86\u4e00\u5b9a\u7684\u65f6\u95f4\uff0c\u4f46\u662f\u5b9a\u4f4d\u95ee\u9898\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4e5f\u5b66\u4e60\u4e86mybatis\u548cpagehepler\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u5bf9\u4e8e\u70ed\u7231\u6e90\u7801\u9605\u8bfb\u7684\u540c\u5b66\u6765\u8bf4\u8fd8\u662f\u6709\u4e00\u5b9a\u7684\u63d0\u5347\u7684\u3002<\/p>\n
\u539f\u6587\uff1ajuejin.cn\/post\/7125356642366914596<\/p>\n
\u66f4\u591a\u6587\u7ae0\u63a8\u8350\uff1a<\/strong><\/p>\n1.Spring Boot 3.x \u6559\u7a0b\uff0c\u592a\u5168\u4e86\uff01<\/a><\/p>\n2.2,000+ \u9053 Java\u9762\u8bd5\u9898\u53ca\u7b54\u6848\u6574\u7406(2024\u6700\u65b0\u7248)<\/a><\/p>\n