{"id":10008144,"date":"2023-08-23T13:02:01","date_gmt":"2023-08-23T05:02:01","guid":{"rendered":"https:\/\/blog.itmax.cn\/?p=10008144"},"modified":"2023-08-23T13:02:01","modified_gmt":"2023-08-23T05:02:01","slug":"%e4%bb%8e%e5%a4%b4%e5%88%b0%e5%b0%be%e8%af%b4%e4%b8%80%e6%ac%a1-spring-%e4%ba%8b%e5%8a%a1%e7%ae%a1%e7%90%86%ef%bc%88%e5%99%a8%ef%bc%89-%e4%ba%ac%e4%b8%9c%e4%ba%91%e6%8a%80%e6%9c%af%e5%9b%a2%e9%98%9f","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10008144","title":{"rendered":"\u4ece\u5934\u5230\u5c3e\u8bf4\u4e00\u6b21 Spring \u4e8b\u52a1\u7ba1\u7406\uff08\u5668\uff09 | \u4eac\u4e1c\u4e91\u6280\u672f\u56e2\u961f"},"content":{"rendered":"

\u4e8b\u52a1\u7ba1\u7406<\/strong>\uff0c\u4e00\u4e2a\u88ab\u8bf4\u70c2\u7684\u4e5f\u88ab\u770b\u70c2\u7684\u8bdd\u9898\uff0c\u8fd8\u662f\u516b\u80a1\u6587\u4e2d\u7684\u57fa\u7840\u80a1\u4e4b\u4e00\u3002\u200b<\/p>\n

\u672c\u6587\u4f1a\u4ece\u8bbe\u8ba1\u89d2\u5ea6\uff0c\u4e00\u6b65\u6b65\u7684\u5256\u6790 Spring \u4e8b\u52a1\u7ba1\u7406\u7684\u8bbe\u8ba1\u601d\u8def\uff08\u90fd\u4f1a\u8bbe\u8ba1\u4e8b\u52a1\u7ba1\u7406\u5668\u4e86\uff0c\u8fd8\u80fd\u73a9\u4e0d\u8f6c\uff1f\uff09<\/p>\n

\u4e3a\u4ec0\u4e48\u9700\u8981\u4e8b\u52a1\u7ba1\u7406\uff1f<\/h2>\n

\u5148\u770b\u770b\u5982\u679c\u6ca1\u6709\u4e8b\u52a1\u7ba1\u7406\u5668\u7684\u8bdd\uff0c\u5982\u679c\u60f3\u8ba9\u591a\u4e2a\u64cd\u4f5c\uff08\u65b9\u6cd5\/\u7c7b\uff09\u5904\u5728\u4e00\u4e2a\u4e8b\u52a1\u91cc<\/strong>\u5e94\u8be5\u600e\u4e48\u505a\uff1a<\/p>\n

\/\/ MethodA:\npublic void methodA(){\n    Connection connection = acquireConnection();\n    try{\n        int updated = connection.prepareStatement().executeUpdate();\n        methodB(connection);\n        connection.commit();\n    }catch (Exception e){\n        rollback(connection);\n    }finally {\n        releaseConnection(connection);\n    }\n}\n\n\/\/ MethodB:\npublic void methodB(Connection connection){\n    int updated = connection.prepareStatement().executeUpdate();\n}\n\n\n\n\n<\/code><\/pre>\n
\u6216\u8005\u7528 ThreadLocal \u5b58\u50a8 Connection\uff1f<\/p>\n
static ThreadLocal<Connection> connHolder = new ThreadLocal<>();\n\n\/\/ MethodA:\npublic void methodA(){\n    Connection connection = acquireConnection();\n    connHolder.set(connection);\n    try{\n        int updated = connection.prepareStatement().executeUpdate();\n        methodB();\n        connection.commit();\n    }catch (Exception e){\n        rollback(connection);\n    }finally {\n        releaseConnection(connection);\n        connHolder.remove();\n    }\n}\n\n\/\/ MethodB:\npublic void methodB(){\n    Connection connection = connHolder.get();\n    int updated = connection.prepareStatement().executeUpdate();\n}\n\n\n\n\n<\/code><\/pre>\n
\u8fd8\u662f\u6709\u70b9\u6076\u5fc3\uff0c\u518d\u62bd\u8c61\u4e00\u4e0b\uff1f\u5c06\u7ed1\u5b9a Connection \u7684\u64cd\u4f5c\u63d0\u53d6\u4e3a\u516c\u5171\u65b9\u6cd5\uff1a<\/p>\n
static ThreadLocal<Connection> connHolder = new ThreadLocal<>();\n\nprivate void bindConnection(){\n    Connection connection = acquireConnection();\n    connHolder.set(connection);\n}\n\nprivate void unbindConnection(){\n    releaseConnection(connection);\n    connHolder.remove();\n}\n\n\/\/ MethodA:\npublic void methodA(){\n    try{\n        bindConnection();\n        int updated = connection.prepareStatement().executeUpdate();\n        methoB();\n        connection.commit();\n    }catch (Exception e){\n        rollback(connection);\n    }finally {\n        unbindConnection();\n    }\n}\n\n\/\/ MethodB:\npublic void methodB(){\n    Connection connection = connHolder.get();\n    int updated = connection.prepareStatement().executeUpdate();\n}\n\n\n\n\n<\/code><\/pre>\n
\u73b0\u5728\u770b\u8d77\u6765\u597d\u70b9\u4e86\uff0c\u4e0d\u8fc7\u6211\u6709\u4e00\u4e2a\u65b0\u7684\u9700\u6c42\uff1a\u60f3\u8ba9 methodB \u72ec\u7acb\u4e00\u4e2a\u65b0\u4e8b\u52a1\uff0c\u5355\u72ec\u63d0\u4ea4\u548c\u56de\u6eda\uff0c\u4e0d\u5f71\u54cd methodA<\/p>\n
\u8fd9\u2026\u2026\u53ef\u5c31\u6709\u70b9\u96be\u641e\u4e86\uff0cThreadLocal \u4e2d\u5df2\u7ecf\u7ed1\u5b9a\u4e86\u4e00\u4e2a Connection\uff0c\u518d\u65b0\u4e8b\u52a1\u7684\u8bdd\u5c31\u4e0d\u597d\u529e\u4e86<\/p>\n
\u90a3\u5982\u679c\u518d\u590d\u6742\u70b9\u5462\uff0cmethodB \u4e2d\u9700\u8981\u8c03\u7528 methodC\uff0cmethodC \u4e5f\u9700\u8981\u4e00\u4e2a\u72ec\u7acb\u4e8b\u52a1\u2026\u2026<\/p>\n
\u800c\u4e14\uff0c\u6bcf\u6b21 bind\/unbind \u7684\u64cd\u4f5c\u4e5f\u6709\u70b9\u592a\u50bb\u4e86\uff0c\u4e07\u4e00\u54ea\u4e2a\u65b9\u6cd5\u5fd8\u4e86\u5199 unbind \uff0c\u6700\u540e\u6765\u4e00\u4e2a\u8fde\u63a5\u6cc4\u9732\u90a3\u4e0d\u662f\u5b8c\u86cb\u4e86\uff01<\/p>\n
\u597d\u5728 Spring \u63d0\u4f9b\u4e86\u4e8b\u52a1\u7ba1\u7406\u5668\uff0c\u5e2e\u6211\u4eec\u89e3\u51b3\u4e86\u8fd9\u4e00\u7cfb\u5217\u75db\u70b9\u3002<\/p>\n
Spring \u4e8b\u52a1\u7ba1\u7406\u89e3\u51b3\u4e86\u4ec0\u4e48\u95ee\u9898\uff1f<\/h2>\n
Spring \u63d0\u4f9b\u7684\u4e8b\u52a1\u7ba1\u7406\u53ef\u4ee5\u5e2e\u6211\u4eec\u7ba1\u7406\u4e8b\u52a1\u76f8\u5173\u7684\u8d44\u6e90\uff0c\u6bd4\u5982 JDBC \u7684 Connection\u3001Hibernate \u7684 Session\u3001Mybatis \u7684 SqlSession\u3002\u5982\u8bf4\u4e0a\u9762\u7684 Connection \u7ed1\u5b9a\u5230 ThreadLocal \u6765\u89e3\u51b3\u5171\u4eab\u4e00\u4e2a\u4e8b\u52a1\u7684\u8fd9\u79cd\u65b9\u5f0f\uff0cSpring \u4e8b\u52a1\u7ba1\u7406\u5c31\u5df2\u7ecf\u5e2e\u6211\u4eec\u505a\u597d\u4e86\u3002<\/p>\n
\u8fd8\u53ef\u4ee5\u5e2e\u6211\u4eec\u5904\u7406\u590d\u6742\u573a\u666f\u4e0b\u7684\u5d4c\u5957\u4e8b\u52a1\uff0c\u6bd4\u5982\u524d\u9762\u8bf4\u5230\u7684 methodB\/methodC \u72ec\u7acb\u4e8b\u52a1\u3002<\/p>\n
\u4ec0\u4e48\u662f\u5d4c\u5957\u4e8b\u52a1\uff1f<\/h3>\n
\u8fd8\u662f\u62ff\u4e0a\u9762\u7684\u4f8b\u5b50\u6765\u8bf4\uff0c methodA \u4e2d\u8c03\u7528\u4e86 methodB\uff0c\u4e24\u4e2a\u65b9\u6cd5\u90fd\u6709\u5bf9\u6570\u636e\u5e93\u7684\u64cd\u4f5c\uff0c\u800c\u4e14\u90fd\u9700\u8981\u4e8b\u52a1\uff1a<\/p>\n
\/\/ MethodA:\npublic void methodA(){\n    int updated = connection.prepareStatement().executeUpdate();\n    methodB();\n    \/\/ ...\n}\n\n\/\/ MethodB:\npublic void methodB(){\n    \/\/ ...\n}\n\n\n\n\n<\/code><\/pre>\n
\u8fd9\u79cd\u591a\u4e2a\u65b9\u6cd5\u8c03\u7528\u94fe\u4e2d\u90fd\u6709\u4e8b\u52a1\u7684\u573a\u666f\uff0c\u5c31\u662f\u5d4c\u5957\u4e8b\u52a1<\/strong>\u3002\u4e0d\u8fc7\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5e76\u4e0d\u662f\u8bf4\u591a\u4e2a\u65b9\u6cd5\u4f7f\u7528\u4e00\u4e2a\u4e8b\u52a1\u624d\u53eb\u5d4c\u5957\uff0c\u54ea\u6015\u662f\u4e0d\u540c\u7684\u4e8b\u52a1\uff0c\u53ea\u8981\u5728\u8fd9\u4e2a\u65b9\u6cd5\u7684\u8c03\u7528\u94fe\u4e2d\uff0c\u90fd\u662f\u5d4c\u5957\u4e8b\u52a1\u3002<\/p>\n
\u4ec0\u4e48\u662f\u4e8b\u52a1\u4f20\u64ad\u884c\u4e3a\uff1f<\/h3>\n
\u90a3\u8c03\u7528\u94fe\u4e2d\u7684\u5b50\u65b9\u6cd5\uff0c\u662f\u7528\u4e00\u4e2a\u65b0\u4e8b\u52a1\uff0c\u8fd8\u662f\u4f7f\u7528\u5f53\u524d\u4e8b\u52a1\u5462\uff1f\u8fd9\u4e2a\u5b50\u65b9\u6cd5\u51b3\u5b9a\u4f7f\u7528\u65b0\u4e8b\u52a1\u8fd8\u662f\u5f53\u524d\u4e8b\u52a1\uff08\u6216\u4e0d\u4f7f\u7528\u4e8b\u52a1\uff09\u7684\u7b56\u7565\uff0c\u5c31\u53eb\u4e8b\u52a1\u4f20\u64ad\u3002<\/p>\n
\u5728 Spring \u7684\u4e8b\u52a1\u7ba1\u7406\u4e2d\uff0c\u8fd9\u4e2a\u5b50\u65b9\u6cd5\u7684\u4e8b\u52a1\u5904\u7406\u7b56\u7565\u53eb\u505a\u4e8b\u52a1\u4f20\u64ad\u884c\u4e3a\uff08Propogation Behavior\uff09<\/strong>\u3002<\/p>\n
\u6709\u54ea\u4e9b\u4e8b\u52a1\u4f20\u64ad\u884c\u4e3a\uff1f<\/h3>\n
Spring \u7684\u4e8b\u52a1\u7ba1\u7406\u652f\u6301\u591a\u79cd\u4f20\u64ad\u884c\u4e3a\uff0c\u8fd9\u91cc\u5c31\u4e0d\u8d34\u4e86\uff0c\u516b\u80a1\u6587\u91cc\u5565\u90fd\u6709\u3002<\/p>\n
\u4f46\u7ed9\u8fd9\u4e9b\u4f20\u64ad\u884c\u4e3a\u5206\u7c7b\u4e4b\u540e\uff0c\u65e0\u975e\u662f\u4ee5\u4e0b\u4e09\u79cd\uff1a<\/p>\n
    \n
  1. \u4f18\u5148\u4f7f\u7528\u5f53\u524d\u4e8b\u52a1<\/li>\n
  2. \u4e0d\u4f7f\u7528\u5f53\u524d\u4e8b\u52a1\uff0c\u65b0\u5efa\u4e8b\u52a1<\/li>\n
  3. \u4e0d\u4f7f\u7528\u4efb\u4f55\u4e8b\u52a1<\/li>\n<\/ol>\n
    \u6bd4\u5982\u4e0a\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cmethodB\/methodC \u72ec\u7acb\u4e8b\u52a1\uff0c\u5c31\u5c5e\u4e8e\u7b2c 2 \u79cd\u4f20\u64ad\u884c\u4e3a – \u4e0d\u4f7f\u7528\u5f53\u524d\u4e8b\u52a1\uff0c\u65b0\u5efa\u4e8b\u52a1<\/p>\n
    \u770b\u4e2a\u6817\u5b50<\/h3>\n
    \u4ee5 Spring JDBC + Spring\u6ce8\u89e3\u7248<\/strong>\u7684\u4e8b\u52a1\u4e3e\u4f8b\u3002\u5728\u9ed8\u8ba4\u7684\u4e8b\u52a1\u4f20\u64ad\u884c\u4e3a\u4e0b\uff0cmethodA \u548c methodB \u4f1a\u4f7f\u7528\u540c\u4e00\u4e2a Connection\uff0c\u5728\u4e00\u4e2a\u4e8b\u52a1\u4e2d<\/p>\n
    @Transactional\npublic void methodA(){\n    jdbcTemplate.batchUpdate(updateSql, params);\n    methodB();\n}\n\n@Transactional\npublic void methodB(){\n    jdbcTemplate.batchUpdate(updateSql, params);\n}\n\n\n\n\n<\/code><\/pre>\n
    \u5982\u679c\u6211\u60f3\u8ba9 methodB \u4e0d\u4f7f\u7528 methodA \u7684\u4e8b\u52a1\uff0c\u81ea\u5df1\u65b0\u5efa\u4e00\u4e2a\u8fde\u63a5\/\u4e8b\u52a1\u5462\uff1f\u53ea\u9700\u8981\u7b80\u5355\u7684\u914d\u7f6e\u4e00\u4e0b @Transactional \u6ce8\u89e3\uff1a<\/p>\n
    @Transactional\npublic void methodA(){\n    jdbcTemplate.batchUpdate(updateSql, params);\n    methodB();\n}\n\n\/\/ \u4f20\u64ad\u884c\u4e3a\u914d\u7f6e\u4e3a - \u65b9\u5f0f2\uff0c\u4e0d\u4f7f\u7528\u5f53\u524d\u4e8b\u52a1\uff0c\u72ec\u7acb\u4e00\u4e2a\u65b0\u4e8b\u52a1\n@Transactional(propagation = Propagation.REQUIRES_NEW)\npublic void methodB(){\n    jdbcTemplate.batchUpdate(updateSql, params);\n}\n\n\n\n\n<\/code><\/pre>\n
    \u5c31\u662f\u8fd9\u4e48\u7b80\u5355\uff0c\u83b7\u53d6 Connection\/\u591a\u65b9\u6cd5\u5171\u4eab Connection\/\u591a\u65b9\u6cd5\u5171\u4eab+\u72ec\u4eab Connection\/\u63d0\u4ea4\/\u91ca\u653e\u8fde\u63a5\u4e4b\u7c7b\u7684\u64cd\u4f5c\uff0c\u5b8c\u5168\u4e0d\u9700\u8981\u6211\u4eec\u64cd\u5fc3\uff0cSpring \u90fd\u66ff\u6211\u4eec\u505a\u597d\u4e86\u3002<\/p>\n
    \u600e\u4e48\u56de\u6eda\uff1f<\/h3>\n
    \u5728\u6ce8\u89e3\u7248\u7684\u4e8b\u52a1\u7ba1\u7406\u4e2d\uff0c\u9ed8\u8ba4\u7684\u7684\u56de\u6eda\u7b56\u7565\u662f\uff1a\u629b\u51fa\u5f02\u5e38\u5c31\u56de\u6eda\u3002\u8fd9\u4e2a\u9ed8\u8ba4\u7b56\u7565\u633a\u597d\uff0c\u8fde\u56de\u6eda\u90fd\u5e2e\u6211\u4eec\u89e3\u51b3\u4e86\uff0c\u518d\u4e5f\u4e0d\u7528\u624b\u52a8\u56de\u6eda\u3002<\/p>\n
    \u4f46\u662f\u5982\u679c\u5728\u5d4c\u5957\u4e8b\u52a1\u4e2d\uff0c\u5b50\u65b9\u6cd5\u72ec\u7acb\u65b0\u4e8b\u52a1\u5462\uff1f\u8fd9\u4e2a\u65f6\u5019\u54ea\u6015\u629b\u51fa\u5f02\u5e38\uff0c\u4e5f\u53ea\u80fd\u56de\u6eda\u5b50\u4e8b\u52a1\uff0c\u4e0d\u80fd\u76f4\u63a5\u5f71\u54cd\u524d\u4e00\u4e2a\u4e8b\u52a1<\/p>\n
    \u53ef\u5982\u679c\u8fd9\u4e2a\u629b\u51fa\u7684\u5f02\u5e38\u4e0d\u662f sql \u5bfc\u81f4\u7684\uff0c\u6bd4\u5982\u6821\u9a8c\u4e0d\u901a\u8fc7\u6216\u8005\u5176\u4ed6\u7684\u5f02\u5e38\uff0c\u6b64\u65f6\u5e94\u8be5\u5c06\u5f53\u524d\u7684\u4e8b\u52a1\u56de\u6eda\u5417\uff1f<\/p>\n
    \u8fd9\u4e2a\u8fd8\u771f\u4e0d\u4e00\u5b9a\uff0c\u8c01\u8bf4\u629b\u5f02\u5e38\u5c31\u8981\u56de\u6eda\uff0c\u5f02\u5e38\u4e5f\u4e0d\u56de\u6eda\u884c\u4e0d\u884c\uff1f<\/p>\n
    \u5f53\u7136\u53ef\u4ee5\uff01\u629b\u5f02\u5e38\u548c\u56de\u6eda\u4e8b\u52a1\u672c\u6765\u5c31\u662f\u4e24\u4e2a\u95ee\u9898\uff0c\u53ef\u4ee5\u8fde\u5728\u4e00\u8d77\uff0c\u4e5f\u53ef\u4ee5\u5206\u5f00\u5904\u7406<\/p>\n
    \/\/ \u4f20\u64ad\u884c\u4e3a\u914d\u7f6e\u4e3a - \u65b9\u5f0f2\uff0c\u4e0d\u4f7f\u7528\u5f53\u524d\u4e8b\u52a1\uff0c\u72ec\u7acb\u4e00\u4e2a\u65b0\u4e8b\u52a1\n\n\/\/ \u6307\u5b9a Exception \u4e5f\u4e0d\u4f1a\u6eda\n@Transactional(propagation = Propagation.REQUIRES_NEW, noRollbackFor = Exception.class)\npublic void methodB(){\n    jdbcTemplate.batchUpdate(updateSql, params);\n}\n\n\n\n\n<\/code><\/pre>\n
    \u6bcf\u4e2a\u4e8b\u52a1\/\u8fde\u63a5\u4f7f\u7528\u4e0d\u540c\u914d\u7f6e<\/h3>\n
    \u9664\u4e86\u4f20\u64ad\u548c\u56de\u6eda\u4e4b\u5916\uff0c\u8fd8\u53ef\u4ee5\u7ed9\u6bcf\u4e2a\u4e8b\u52a1\/\u8fde\u63a5\u4f7f\u7528\u4e0d\u540c\u7684\u914d\u7f6e\uff0c\u6bd4\u5982\u4e0d\u540c\u7684\u9694\u79bb\u7ea7\u522b\uff1a<\/p>\n
    @Transactional\npublic void methodA(){\n    jdbcTemplate.batchUpdate(updateSql, params);\n    methodB();\n}\n\n\/\/ \u4f20\u64ad\u884c\u4e3a\u914d\u7f6e\u4e3a - \u65b9\u5f0f2\uff0c\u4e0d\u4f7f\u7528\u5f53\u524d\u4e8b\u52a1\uff0c\u72ec\u7acb\u4e00\u4e2a\u65b0\u4e8b\u52a1\n\/\/ \u8fd9\u4e2a\u4e8b\u52a1\/\u8fde\u63a5\u4e2d\u4f7f\u7528 RC \u9694\u79bb\u7ea7\u522b\uff0c\u800c\u4e0d\u662f\u9ed8\u8ba4\u7684 RR\n@Transactional(propagation = Propagation.REQUIRES_NEW, isolation = Isolation.READ_UNCOMMITTED)\npublic void methodB(){\n    jdbcTemplate.batchUpdate(updateSql, params);\n}\n\n\n\n\n<\/code><\/pre>\n
    \u9664\u4e86\u9694\u79bb\u7ea7\u522b\u4e4b\u5916\uff0c\u5176\u4ed6\u7684 JDBC Connection \u914d\u7f6e\u5f53\u7136\u4e5f\u662f\u652f\u6301\u7684\uff0c\u6bd4\u5982 readOnly\u3002\u8fd9\u6837\u4e00\u6765\uff0c\u867d\u7136\u6211\u4eec\u4e0d\u7528\u663e\u793a\u7684\u83b7\u53d6 connection\/session\uff0c\u4f46\u8fd8\u662f\u53ef\u4ee5\u7ed9\u5d4c\u5957\u4e2d\u7684\u6bcf\u4e00\u4e2a\u4e8b\u52a1\u914d\u7f6e\u4e0d\u540c\u7684\u53c2\u6570\uff0c\u975e\u5e38\u7075\u6d3b\u3002<\/p>\n
    \u529f\u80fd\u603b\u7ed3<\/h3>\n
    \u597d\u4e86\uff0c\u73b0\u5728\u5df2\u7ecf\u4e86\u89e3\u4e86 Spring \u4e8b\u52a1\u7ba1\u7406\u7684\u6240\u6709\u6838\u5fc3\u529f\u80fd\uff0c\u6765\u603b\u7ed3\u4e00\u4e0b\u8fd9\u4e9b\u6838\u5fc3\u529f\u80fd\u70b9\uff1a<\/p>\n
      \n
    1. \u8fde\u63a5\/\u8d44\u6e90\u7ba1\u7406 – \u65e0\u9700\u624b\u52a8\u83b7\u53d6\u8d44\u6e90\u3001\u5171\u4eab\u8d44\u6e90\u3001\u91ca\u653e\u8d44\u6e90<\/li>\n
    2. \u5d4c\u5957\u4e8b\u52a1\u7684\u652f\u6301 – \u652f\u6301\u5d4c\u5957\u4e8b\u52a1\u4e2d\u4f7f\u7528\u4e0d\u540c\u7684\u8d44\u6e90\u7b56\u7565\u3001\u56de\u6eda\u7b56\u7565<\/li>\n
    3. \u6bcf\u4e2a\u4e8b\u52a1\/\u8fde\u63a5\u4f7f\u7528\u4e0d\u540c\u7684\u914d\u7f6e<\/li>\n<\/ol>\n
      \u4e8b\u52a1\u7ba1\u7406\u5668\uff08TransactionManager\uff09\u6a21\u578b<\/h2>\n
      \u5176\u5b9e\u4ed4\u7ec6\u60f3\u60f3\uff0c\u4e8b\u52a1\u7ba1\u7406\u7684\u6838\u5fc3\u64cd\u4f5c\u53ea\u6709\u4e24\u4e2a\uff1a\u63d0\u4ea4\u548c\u56de\u6eda\u3002\u524d\u9762\u6240\u8c13\u7684\u4f20\u64ad\u3001\u5d4c\u5957\u3001\u56de\u6eda\u4e4b\u7c7b\u7684\uff0c\u90fd\u662f\u57fa\u4e8e\u8fd9\u4e24\u4e2a\u64cd\u4f5c\u3002<\/p>\n
      \u6240\u4ee5 Spring \u5c06\u4e8b\u52a1\u7ba1\u7406\u7684\u6838\u5fc3\u529f\u80fd\u62bd\u8c61\u4e3a\u4e00\u4e2a\u4e8b\u52a1\u7ba1\u7406\u5668\uff08Transaction Manager\uff09<\/strong>\uff0c\u57fa\u4e8e\u8fd9\u4e2a\u4e8b\u52a1\u7ba1\u7406\u5668\u6838\u5fc3\uff0c\u53ef\u4ee5\u5b9e\u73b0\u591a\u79cd\u4e8b\u52a1\u7ba1\u7406\u7684\u65b9\u5f0f\u3002<\/p>\n
      \u8fd9\u4e2a\u6838\u5fc3\u7684\u4e8b\u52a1\u7ba1\u7406\u5668\u53ea\u6709\u4e09\u4e2a\u529f\u80fd\u63a5\u53e3\uff1a<\/p>\n
        \n
      1. \u83b7\u53d6\u4e8b\u52a1\u8d44\u6e90<\/strong>\uff0c\u8d44\u6e90\u53ef\u4ee5\u662f\u4efb\u610f\u7684\uff0c\u6bd4\u5982jdbc connection\/hibernate mybatis session\u4e4b\u7c7b\uff0c\u7136\u540e\u7ed1\u5b9a\u5e76\u5b58\u50a8<\/li>\n
      2. \u63d0\u4ea4\u4e8b\u52a1<\/strong>– \u63d0\u4ea4\u6307\u5b9a\u7684\u4e8b\u52a1\u8d44\u6e90<\/li>\n
      3. \u56de\u6eda\u4e8b\u52a1<\/strong>– \u56de\u6eda\u6307\u5b9a\u7684\u4e8b\u52a1\u8d44\u6e90<\/li>\n<\/ol>\n
        interface PlatformTransactionManager{\n    \/\/ \u83b7\u53d6\u4e8b\u52a1\u8d44\u6e90\uff0c\u8d44\u6e90\u53ef\u4ee5\u662f\u4efb\u610f\u7684\uff0c\u6bd4\u5982jdbc connection\/hibernate mybatis session\u4e4b\u7c7b\n    TransactionStatus getTransaction(TransactionDefinition definition)\n            throws TransactionException;\n    \n    \/\/ \u63d0\u4ea4\u4e8b\u52a1\n    void commit(TransactionStatus status) throws TransactionException;\n    \n    \/\/ \u56de\u6eda\u4e8b\u52a1\n    void rollback(TransactionStatus status) throws TransactionException;\n}\n\n\n\n\n<\/code><\/pre>\n
        \u4e8b\u52a1\u5b9a\u4e49 – TransactionDefinition<\/h3>\n
        \u8fd8\u8bb0\u5f97\u4e0a\u9762\u7684 @Transactional \u6ce8\u89e3\u5417\uff0c\u91cc\u9762\u5b9a\u4e49\u4e86\u4f20\u64ad\u884c\u4e3a\u3001\u9694\u79bb\u7ea7\u522b\u3001\u56de\u6eda\u7b56\u7565\u3001\u53ea\u8bfb\u4e4b\u7c7b\u7684\u5c5e\u6027\uff0c\u8fd9\u4e2a\u5c31\u662f\u4e00\u6b21\u4e8b\u52a1\u64cd\u4f5c\u7684\u5b9a\u4e49\u3002<\/p>\n
        \u5728\u83b7\u53d6\u4e8b\u52a1\u8d44\u6e90\u65f6\uff0c\u9700\u8981\u6839\u636e\u8fd9\u4e2a\u4e8b\u52a1\u7684\u5b9a\u4e49\u6765\u8fdb\u884c\u4e0d\u540c\u7684\u914d\u7f6e\uff1a<\/p>\n
          \n
        1. \u6bd4\u5982\u914d\u7f6e\u4e86\u4f7f\u7528\u65b0\u4e8b\u52a1\uff0c\u90a3\u4e48\u5728\u83b7\u53d6\u4e8b\u52a1\u8d44\u6e90\u65f6\u5c31\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\uff0c\u800c\u4e0d\u662f\u5df2\u6709\u7684<\/li>\n
        2. \u6bd4\u5982\u914d\u7f6e\u4e86\u9694\u79bb\u7ea7\u522b\uff0c\u90a3\u4e48\u5728\u9996\u6b21\u521b\u5efa\u8d44\u6e90\uff08Connection\uff09\u65f6\uff0c\u5c31\u9700\u8981\u7ed9 Connection \u8bbe\u7f6e propagation<\/li>\n
        3. \u6bd4\u5982\u914d\u7f6e\u4e86\u53ea\u8bfb\u5c5e\u6027\uff0c\u90a3\u4e48\u5728\u9996\u6b21\u521b\u5efa\u8d44\u6e90\uff08Connection\uff09\u65f6\uff0c\u5c31\u9700\u8981\u7ed9 Connection \u8bbe\u7f6e readOnly<\/li>\n<\/ol>\n
          \u4e3a\u4ec0\u4e48\u8981\u5355\u72ec\u7528\u4e00\u4e2a TransactionDefinition \u6765\u5b58\u50a8\u4e8b\u52a1\u5b9a\u4e49\uff0c\u76f4\u63a5\u7528\u6ce8\u89e3\u7684\u5c5e\u6027\u4e0d\u884c\u5417\uff1f<\/p>\n
          \u5f53\u7136\u53ef\u4ee5\uff0c\u4f46\u6ce8\u89e3\u7684\u4e8b\u52a1\u7ba1\u7406\u53ea\u662f Spring \u63d0\u4f9b\u7684\u81ea\u52a8\u6321\uff0c\u8fd8\u6709\u9002\u5408\u8001\u53f8\u673a\u7684\u624b\u52a8\u6321\u4e8b\u52a1\u7ba1\u7406\uff08\u540e\u9762\u4f1a\u4ecb\u7ecd\uff09\uff1b\u624b\u52a8\u6321\u53ef\u7528\u4e0d\u4e86\u6ce8\u89e3\uff0c\u6240\u4ee5\u5355\u72ec\u5efa\u4e00\u4e2a\u4e8b\u52a1\u5b9a\u4e49\u7684\u6a21\u578b\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u5b9e\u73b0\u901a\u7528\u3002<\/p>\n
          \u4e8b\u52a1\u72b6\u6001 – TransactionStatus<\/h3>\n
          \u90a3\u65e2\u7136\u5d4c\u5957\u4e8b\u52a1\u4e0b\uff0c\u6bcf\u4e2a\u5b50\u65b9\u6cd5\u7684\u4e8b\u52a1\u53ef\u80fd\u4e0d\u540c\uff0c\u6240\u4ee5\u8fd8\u5f97\u6709\u4e00\u4e2a\u5b50\u65b9\u6cd5\u4e8b\u52a1\u7684\u72b6\u6001 – TransactionStatus\uff0c\u7528\u6765\u5b58\u50a8\u5f53\u524d\u4e8b\u52a1\u7684\u4e00\u4e9b\u6570\u636e\u548c\u72b6\u6001\uff0c\u6bd4\u5982\u4e8b\u52a1\u8d44\u6e90\uff08Connection\uff09\u3001\u56de\u6eda\u72b6\u6001\u7b49\u3002<\/p>\n
          \u83b7\u53d6\u4e8b\u52a1\u8d44\u6e90<\/h3>\n
          \u4e8b\u52a1\u7ba1\u7406\u5668\u7684\u7b2c\u4e00\u6b65\uff0c\u5c31\u662f\u6839\u636e\u4e8b\u52a1\u5b9a\u4e49\u6765\u83b7\u53d6\/\u521b\u5efa\u8d44\u6e90\u4e86\uff0c\u8fd9\u4e00\u6b65\u6700\u9ebb\u70e6\u7684\u662f\u8981\u533a\u5206\u4f20\u64ad\u884c\u4e3a\uff0c\u4e0d\u540c\u4f20\u64ad\u884c\u4e3a\u4e0b\u7684\u903b\u8f91\u4e0d\u592a\u4e00\u6837\u3002<\/p>\n
          \u201c\u9ed8\u8ba4\u7684\u4f20\u64ad\u884c\u4e3a\u4e0b\uff0c\u4f7f\u7528\u5f53\u524d\u4e8b\u52a1\u201d\uff0c\u600e\u4e48\u7b97\u6709\u5f53\u524d\u4e8b\u52a1\u5462\uff1f<\/p>\n
          \u628a\u4e8b\u52a1\u8d44\u6e90\u5b58\u8d77\u6765\u561b\uff0c\u53ea\u8981\u5df2\u7ecf\u5b58\u5728\u90a3\u5c31\u662f\u6709\u5f53\u524d\u4e8b\u52a1\uff0c\u76f4\u63a5\u83b7\u53d6\u5df2\u5b58\u50a8\u7684\u4e8b\u52a1\u8d44\u6e90\u5c31\u884c\u3002\u6587\u4e2d\u5f00\u5934\u7684\u4f8b\u5b50\u4e5f\u6f14\u793a\u4e86\uff0c\u5982\u679c\u60f3\u8ba9\u591a\u4e2a\u65b9\u6cd5\u65e0\u611f\u7684\u4f7f\u7528\u540c\u4e00\u4e2a\u4e8b\u52a1\uff0c\u53ef\u4ee5\u7528 ThreadLocal \u5b58\u50a8\u8d77\u6765\uff0c\u7b80\u5355\u7c97\u66b4\u3002<\/p>\n
          Spring \u4e5f\u662f\u8fd9\u4e48\u505a\u7684\uff0c\u4e0d\u8fc7\u5b83\u5b9e\u73b0\u7684\u66f4\u590d\u6742\u4e00\u4e9b\uff0c\u62bd\u8c61\u4e86\u4e00\u5c42\u4e8b\u52a1\u8d44\u6e90\u540c\u6b65\u7ba1\u7406\u5668 – TransactionSynchronizationManager\uff08\u672c\u6587\u540e\u9762\u4f1a\u7b80\u79f0 TxSyncMgr\uff09<\/strong>\uff0c\u5728\u8fd9\u4e2a\u540c\u6b65\u7ba1\u7406\u5668\u91cc\u4f7f\u7528 ThreadLocal \u5b58\u50a8\u4e86\u4e8b\u52a1\u8d44\u6e90\uff08\u672c\u6587\u4e3a\u4e86\u65b9\u4fbf\u7406\u89e3\uff0c\u5c3d\u53ef\u80fd\u7684\u4e0d\u8d34\u975e\u5173\u952e\u6e90\u7801\uff09\u3002<\/p>\n
          \u5269\u4e0b\u7684\u5c31\u662f\u6839\u636e\u4e0d\u540c\u4f20\u64ad\u884c\u4e3a\uff0c\u6267\u884c\u4e0d\u540c\u7684\u7b56\u7565\u4e86\uff0c\u5206\u7c7b\u4e4b\u540e\u53ea\u6709 3 \u4e2a\u6761\u4ef6\u5206\u652f\uff1a<\/p>\n
            \n
          1. \u5f53\u524d\u6709\u4e8b\u52a1 – \u6839\u636e\u4e0d\u540c\u4f20\u64ad\u884c\u4e3a\u5904\u7406\u4e0d\u540c<\/li>\n
          2. \u5f53\u524d\u6ca1\u4e8b\u52a1\uff0c\u4f46\u9700\u8981\u5f00\u542f\u65b0\u4e8b\u52a1<\/li>\n
          3. \u5f7b\u5e95\u4e0d\u7528\u4e8b\u52a1 – \u8fd9\u4e2a\u5f88\u5c11\u7528<\/li>\n<\/ol>\n
            public final TransactionStatus getTransaction(TransactionDefinition definition) {\n    \/\/\u521b\u5efa\u4e8b\u52a1\u8d44\u6e90 - \u6bd4\u5982 Connection\n    Object transaction = doGetTransaction();\n    \n    if (isExistingTransaction(transaction)) {\n        \/\/ \u5904\u7406\u5f53\u524d\u5df2\u6709\u4e8b\u52a1\u7684\u573a\u666f\n        return handleExistingTransaction(def, transaction, debugEnabled);\n    }else if (def.getPropagationBehavior() == TransactionDefinition.PROPAGATION_REQUIRED ||\n                def.getPropagationBehavior() == TransactionDefinition.PROPAGATION_REQUIRES_NEW ||\n                def.getPropagationBehavior() == TransactionDefinition.PROPAGATION_NESTED){\n        \n        \/\/ \u5f00\u542f\u65b0\u4e8b\u52a1\n        return startTransaction(def, transaction, debugEnabled, suspendedResources);\n    }else {\n        \/\/ \u5f7b\u5e95\u4e0d\u7528\u4e8b\u52a1\n    }\n    \n    \/\/ ...\n}\n\n\n\n\n<\/code><\/pre>\n
            \u5148\u4ecb\u7ecd\u4e00\u4e0b\u5206\u652f 2 – \u5f53\u524d\u6ca1\u4e8b\u52a1\uff0c\u4f46\u9700\u8981\u5f00\u542f\u65b0\u4e8b\u52a1<\/strong>\uff0c\u8fd9\u4e2a\u903b\u8f91\u76f8\u5bf9\u7b80\u5355\u4e00\u4e9b\u3002\u53ea\u9700\u8981\u65b0\u5efa\u4e8b\u52a1\u8d44\u6e90\uff0c\u7136\u540e\u7ed1\u5b9a\u5230 ThreadLocal \u5373\u53ef\uff1a<\/p>\n
            private TransactionStatus startTransaction(TransactionDefinition definition, Object transaction,\n            boolean debugEnabled, SuspendedResourcesHolder suspendedResources) {\n        \n        \/\/ \u521b\u5efa\u4e8b\u52a1\n        DefaultTransactionStatus status = newTransactionStatus(\n                definition, transaction, true, newSynchronization, debugEnabled, suspendedResources);\n        \n        \/\/ \u5f00\u542f\u4e8b\u52a1\uff08beginTx\u6216\u8005setAutoCommit\u4e4b\u7c7b\u7684\u64cd\u4f5c\uff09\n        \/\/ \u7136\u540e\u5c06\u4e8b\u52a1\u8d44\u6e90\u7ed1\u5b9a\u5230\u4e8b\u52a1\u8d44\u6e90\u7ba1\u7406\u5668 TransactionSynchronizationManager\n        doBegin(transaction, definition);\n\n\n\n\n<\/code><\/pre>\n
            \u73b0\u5728\u56de\u5230\u5206\u652f1 – \u5f53\u524d\u6709\u4e8b\u52a1 – \u6839\u636e\u4e0d\u540c\u4f20\u64ad\u884c\u4e3a\u5904\u7406\u4e0d\u540c<\/strong>\uff0c\u8fd9\u4e2a\u5c31\u7a0d\u5fae\u6709\u70b9\u9ebb\u70e6\u4e86\u3002\u56e0\u4e3a\u6709\u5b50\u65b9\u6cd5\u72ec\u7acb\u4e8b\u52a1\u7684\u9700\u6c42\uff0c\u53ef\u662f TransactionSynchronizationManager \u5374\u53ea\u80fd\u5b58\u4e00\u4e2a\u4e8b\u52a1\u8d44\u6e90\u3002<\/p>\n
            \u6302\u8d77\uff08Suspend\uff09\u548c\u6062\u590d\uff08Resume\uff09<\/h3>\n
            Spring \u91c7\u7528\u4e86\u4e00\u79cd\u6302\u8d77(Suspend) – \u6062\u590d(Resume)\u7684\u8bbe\u8ba1\u6765\u89e3\u51b3\u8fd9\u4e2a\u5d4c\u5957\u8d44\u6e90\u5904\u7406\u7684\u95ee\u9898\u3002\u5f53\u5b50\u65b9\u6cd5\u9700\u8981\u72ec\u7acb\u4e8b\u52a1\u65f6\uff0c\u5c31\u5c06\u5f53\u524d\u4e8b\u52a1\u6302\u8d77\uff0c\u4ece TxSyncMgr \u4e2d\u79fb\u9664\u5f53\u524d\u4e8b\u52a1\u8d44\u6e90\uff0c\u521b\u5efa\u65b0\u4e8b\u52a1\u7684\u72b6\u6001\u65f6\uff0c\u5c06\u6302\u8d77\u7684\u4e8b\u52a1\u8d44\u6e90\u4fdd\u5b58\u81f3\u65b0\u7684\u4e8b\u52a1\u72b6\u6001 TransactionStatus \u4e2d\uff1b\u5728\u5b50\u65b9\u6cd5\u7ed3\u675f\u65f6\uff0c\u53ea\u9700\u8981\u518d\u4ece\u5b50\u65b9\u6cd5\u7684\u4e8b\u52a1\u72b6\u6001\u4e2d\uff0c\u518d\u6b21\u62ff\u51fa\u6302\u8d77\u7684\u4e8b\u52a1\u8d44\u6e90\uff0c\u91cd\u65b0\u7ed1\u5b9a\u81f3 TxSyncMgr \u5373\u53ef\u5b8c\u6210\u6062\u590d\u7684\u64cd\u4f5c\u3002  
            \u200b  
            \u6574\u4e2a\u6302\u8d77 – \u6062\u590d\u7684\u6d41\u7a0b\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff1a  
            \u200b  
            \"spring_tx_suspend_resume.png\"<\/p>\n
            \u6ce8\u610f\uff1a\u6302\u8d77\u64cd\u4f5c\u662f\u5728\u83b7\u53d6\u4e8b\u52a1\u8d44\u6e90\u8fd9\u4e00\u6b65\u505a\u7684\uff0c\u800c\u6062\u590d\u7684\u64cd\u4f5c\u662f\u5728\u5b50\u65b9\u6cd5\u7ed3\u675f\u65f6\uff08\u63d0\u4ea4\u6216\u8005\u56de\u6eda\uff09\u4e2d\u8fdb\u884c\u7684\u3002<\/strong><\/p>\n
            \u8fd9\u6837\u4e00\u6765\uff0c\u6bcf\u4e2a TransactionStatus \u90fd\u4f1a\u4fdd\u5b58\u6302\u8d77\u7684\u524d\u7f6e\u4e8b\u52a1\u8d44\u6e90\uff0c\u5982\u679c\u65b9\u6cd5\u8c03\u7528\u94fe\u5f88\u957f\uff0c\u6bcf\u6b21\u90fd\u662f\u65b0\u4e8b\u52a1\u7684\u8bdd\uff0c\u90a3\u8fd9\u4e2a TransactionStatus \u770b\u8d77\u6765\u5c31\u4f1a\u50cf\u4e00\u4e2a\u94fe\u8868\uff1a  
            \"image.png\"<\/p>\n
            \u63d0\u4ea4\u4e8b\u52a1<\/h3>\n
            \u83b7\u53d6\u8d44\u6e90\u3001\u64cd\u4f5c\u5b8c\u6bd5\u540e\u6765\u5230\u4e86\u63d0\u4ea4\u4e8b\u52a1\u8fd9\u4e00\u6b65\uff0c\u8fd9\u4e2a\u63d0\u4ea4\u64cd\u4f5c\u6bd4\u8f83\u7b80\u5355\uff0c\u53ea\u6709\u4e24\u6b65\uff1a<\/p>\n
              \n
            1. \u5f53\u524d\u662f\u65b0\u4e8b\u52a1\u624d\u63d0\u4ea4<\/li>\n
            2. \u5904\u7406\u6302\u8d77\u8d44\u6e90<\/li>\n<\/ol>\n
              \u600e\u4e48\u77e5\u9053\u662f\u65b0\u4e8b\u52a1\uff1f  
              \u200b  
              \u6bcf\u7ecf\u8fc7\u4e00\u6b21\u4e8b\u52a1\u5d4c\u5957\uff0c\u90fd\u4f1a\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 TransactionStatus\uff0c\u8fd9\u4e2a\u4e8b\u52a1\u72b6\u6001\u91cc\u4f1a\u8bb0\u5f55\u5f53\u524d\u662f\u5426\u662f\u65b0\u4e8b\u52a1\u3002\u5982\u679c\u591a\u4e2a\u5b50\u65b9\u6cd5\u90fd\u4f7f\u7528\u4e00\u4e2a\u4e8b\u52a1\u8d44\u6e90\uff0c\u90a3\u4e48\u9664\u4e86\u7b2c\u4e00\u4e2a\u521b\u5efa\u4e8b\u52a1\u8d44\u6e90\u7684 TransactionStatus \u4e4b\u5916\uff0c\u5176\u4ed6\u90fd\u4e0d\u662f\u65b0\u4e8b\u52a1\u3002<\/p>\n
              \u5982\u4e0b\u56fe\u6240\u793a\uff0cA -> B -> C \u65f6\uff0c\u7531\u4e8e BC \u90fd\u4f7f\u7528\u5f53\u524d\u4e8b\u52a1\uff0c\u90a3\u4e48\u867d\u7136 ABC \u6240\u4f7f\u7528\u7684\u4e8b\u52a1\u8d44\u6e90\u662f\u4e00\u6837\u7684\uff0c\u4f46\u662f\u53ea\u6709 A \u7684 TransactionStatus \u662f\u65b0\u4e8b\u52a1\uff0cBC \u5e76\u4e0d\u662f\uff1b\u90a3\u4e48\u5728 BC \u63d0\u4ea4\u4e8b\u52a1\u65f6\uff0c\u5c31\u4e0d\u4f1a\u771f\u6b63\u7684\u8c03\u7528\u63d0\u4ea4\uff0c\u53ea\u6709\u56de\u5230 A \u6267\u884c commit \u64cd\u4f5c\u65f6\uff0c\u624d\u4f1a\u771f\u6b63\u7684\u8c03\u7528\u63d0\u4ea4\u64cd\u4f5c\u3002  
              \"image.png\"  
              \u8fd9\u91cc\u518d\u89e3\u91ca\u4e0b\uff0c\u4e3a\u4ec0\u4e48\u65b0\u4e8b\u52a1\u624d\u9700\u8981\u63d0\u4ea4\uff0c\u800c\u5df2\u7ecf\u6709\u4e8b\u52a1\u5374\u4ec0\u4e48\u90fd\u4e0d\u7528\u505a\uff1a<\/p>\n
              \u56e0\u4e3a\u5bf9\u4e8e\u65b0\u4e8b\u52a1\u6765\u8bf4\uff0c\u8fd9\u91cc\u7684\u63d0\u4ea4\u64cd\u4f5c\u5df2\u7ecf\u662f\u4e8b\u52a1\u5b8c\u6210\u4e86\uff1b\u800c\u5bf9\u4e8e\u975e\u65b0\u4e8b\u52a1\u7684\u573a\u666f\uff0c\u524d\u7f6e\u4e8b\u52a1\uff08\u5373\u5f53\u524d\u4e8b\u52a1\uff09\u8fd8\u6ca1\u6709\u6267\u884c\u5b8c\uff0c\u53ef\u80fd\u540e\u9762\u8fd8\u6709\u5176\u4ed6\u6570\u636e\u5e93\u64cd\u4f5c\uff0c\u6240\u4ee5\u8fd9\u4e2a\u63d0\u4ea4\u7684\u64cd\u4f5c\u5f97\u8ba9\u5f53\u524d\u4e8b\u52a1\u521b\u5efa\u65b9\u53bb\u505a\uff0c\u8fd9\u91cc\u5e76\u4e0d\u80fd\u63d0\u4ea4\u3002<\/p>\n
              \u56de\u6eda\u4e8b\u52a1<\/h3>\n
              \u9664\u4e86\u63d0\u4ea4\uff0c\u8fd8\u6709\u56de\u6eda\u5462\uff0c\u56de\u6eda\u4e8b\u52a1\u7684\u903b\u8f91\u548c\u63d0\u4ea4\u4e8b\u52a1\u7c7b\u4f3c\uff1a<\/p>\n
                \n
              1. \u5982\u679c\u662f\u65b0\u4e8b\u52a1\u624d\u56de\u6eda\uff0c\u539f\u56e0\u4e0a\u9762\u5df2\u7ecf\u4ecb\u7ecd\u8fc7\u4e86<\/li>\n
              2. \u5982\u679c\u4e0d\u662f\u65b0\u4e8b\u52a1\u5219\u53ea\u8bbe\u7f6e\u56de\u6eda\u6807\u8bb0<\/li>\n
              3. \u5904\u7406\u6302\u8d77\u8d44\u6e90<\/li>\n<\/ol>\n
                \u6ce8\u610f\uff1a\u4e8b\u52a1\u7ba1\u7406\u5668\u662f\u4e0d\u5305\u542b\u56de\u6eda\u7b56\u7565\u8fd9\u4e2a\u4e1c\u897f\u7684\uff0c\u56de\u6eda\u7b56\u7565\u662f AOP \u7248\u7684\u4e8b\u52a1\u7ba1\u7406\u589e\u5f3a\u7684\u529f\u80fd\uff0c\u4f46\u8fd9\u4e2a\u529f\u80fd\u5e76\u4e0d\u5c5e\u4e8e\u6838\u5fc3\u7684\u4e8b\u52a1\u7ba1\u7406\u5668<\/strong><\/p>\n
                \u81ea\u52a8\u6321\u4e0e\u624b\u52a8\u6321<\/h2>\n
                Spring \u7684\u4e8b\u52a1\u7ba1\u7406\u529f\u80fd\u90fd\u662f\u56f4\u7ed5\u7740\u4e0a\u9762\u8fd9\u4e2a\u4e8b\u52a1\u7ba1\u7406\u5668\u8fd0\u884c\u7684\uff0c\u63d0\u4f9b\u4e86\u4e09\u79cd\u7ba1\u7406\u4e8b\u52a1\u7684\u65b9\u5f0f\uff0c\u5206\u522b\u662f\uff1a<\/p>\n
                  \n
                1. XML AOP \u7684\u4e8b\u52a1\u7ba1\u7406 – \u6bd4\u8f83\u53e4\u8001\u73b0\u5728\u7528\u7684\u4e0d\u591a<\/li>\n
                2. \u6ce8\u89e3\u7248\u672c\u7684\u4e8b\u52a1\u7ba1\u7406 – @Transactional<\/li>\n
                3. TransactionTemplate – \u624b\u52a8\u6321\u7684\u4e8b\u52a1\u7ba1\u7406\uff0c\u4e5f\u79f0\u7f16\u7a0b\u5f0f\u4e8b\u52a1\u7ba1\u7406<\/li>\n<\/ol>\n
                  \u81ea\u52a8\u6321<\/h3>\n
                  XML\/@Transactional \u4e24\u79cd\u57fa\u4e8e AOP \u7684\u6ce8\u89e3\u7ba1\u7406\uff0c\u5176\u5165\u53e3\u7c7b\u662f TransactionInterceptor\uff0c\u662f\u4e00\u4e2a AOP \u7684 Interceptor\uff0c\u8d1f\u8d23\u8c03\u7528\u4e8b\u52a1\u7ba1\u7406\u5668\u6765\u5b9e\u73b0\u4e8b\u52a1\u7ba1\u7406\u3002<\/p>\n
                  \u56e0\u4e3a\u6838\u5fc3\u529f\u80fd\u90fd\u5728\u4e8b\u52a1\u7ba1\u7406\u5668\u91cc\u5b9e\u73b0\uff0c\u6240\u4ee5\u8fd9\u4e2a AOP Interceptor \u5f88\u7b80\u5355\uff0c\u53ea\u662f\u8c03\u7528\u4e00\u4e0b\u4e8b\u52a1\u7ba1\u7406\u5668\uff0c\u6838\u5fc3\uff08\u4f2a\uff09\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
                  public Object invoke(MethodInvocation invocation) throws Throwable {\n    \n    \/\/ \u83b7\u53d6\u4e8b\u52a1\u8d44\u6e90\n    Object transaction = transactionManager.getTransaction(txAttr);    \n    Object retVal;\n    \n    try {\n        \/\/ \u6267\u884c\u4e1a\u52a1\u4ee3\u7801\n        retVal = invocation.proceedWithInvocation();\n        \n        \/\/ \u63d0\u4ea4\u4e8b\u52a1\n        transactionManager.commit(txStatus);\n    } catch (Throwable ex){\n        \/\/ \u5148\u5224\u65ad\u5f02\u5e38\u56de\u6eda\u7b56\u7565\uff0c\u7136\u540e\u8c03\u7528\u4e8b\u52a1\u7ba1\u7406\u5668\u7684 rollback\n        rollbackOn(ex, txStatus);\n    } \n}\n\n\n\n\n<\/code><\/pre>\n
                  \u5e76\u4e14 AOP \u8fd9\u79cd\u81ea\u52a8\u6321\u7684\u4e8b\u52a1\u7ba1\u7406\u8fd8\u589e\u52a0\u4e86\u4e00\u4e2a\u56de\u6eda\u7b56\u7565\u7684\u73a9\u6cd5\uff0c\u8fd9\u4e2a\u662f\u624b\u52a8\u6321 TransactionTemplate \u6240\u6ca1\u6709\u7684\uff0c\u4f46\u8fd9\u4e2a\u529f\u80fd\u5e76\u4e0d\u5728\u4e8b\u52a1\u7ba1\u7406\u5668\u4e2d\uff0c\u53ea\u662f AOP \u7248\u4e8b\u52a1\u7684\u4e00\u4e2a\u589e\u5f3a\u3002<\/p>\n
                  \u624b\u52a8\u6321<\/h3>\n
                  TransactionTemplate<\/code>\u8fd9\u4e2a\u662f\u624b\u52a8\u6321\u7684\u4e8b\u52a1\u7ba1\u7406\uff0c\u867d\u7136\u6ca1\u6709\u6ce8\u89e3\u7684\u65b9\u4fbf\uff0c\u4f46\u662f\u597d\u5728\u7075\u6d3b\uff0c\u5f02\u5e38\/\u56de\u6eda\u5565\u7684\u90fd\u53ef\u4ee5\u81ea\u5df1\u63a7\u5236\u3002<\/p>\n
                  \u6240\u4ee5\u8fd9\u4e2a\u5b9e\u73b0\u66f4\u7b80\u5355\uff0c\u8fde\u5f02\u5e38\u56de\u6eda\u7b56\u7565\u90fd\u6ca1\u6709\uff0c\u7279\u6b8a\u7684\u56de\u6eda\u65b9\u5f0f\u8fd8\u8981\u81ea\u5df1\u8bbe\u7f6e\uff08\u9ed8\u8ba4\u662f\u4efb\u4f55\u5f02\u5e38\u90fd\u4f1a\u56de\u6eda\uff09\uff0c\u6838\u5fc3\uff08\u4f2a\uff09\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
                  public <T> T execute(TransactionCallback<T> action) throws TransactionException {\n    \n    \/\/ \u83b7\u53d6\u4e8b\u52a1\u8d44\u6e90\n    TransactionStatus status = this.transactionManager.getTransaction(this);\n    T result;\n    try {\n        \n        \/\/ \u6267\u884c callback \u4e1a\u52a1\u4ee3\u7801\n        result = action.doInTransaction(status);\n    }\n    catch (Throwable ex) {\n        \n        \/\/ \u8c03\u7528\u4e8b\u52a1\u7ba1\u7406\u5668\u7684 rollback\n        rollbackOnException(status, ex);\n    }\n    \n    \u63d0\u4ea4\u4e8b\u52a1\n    this.transactionManager.commit(status);\n    }\n}\n\n\n\n\n<\/code><\/pre>\n
                  \u4e3a\u4ec0\u4e48\u6709\u8fd9\u4e48\u65b9\u4fbf\u7684\u81ea\u52a8\u6321\uff0c\u8fd8\u8981\u624b\u52a8\u6321\uff1f<\/h3>\n
                  \u56e0\u4e3a\u624b\u52a8\u6321\u66f4\u7075\u6d3b\u554a\uff0c\u60f3\u600e\u4e48\u73a9\u5c31\u600e\u4e48\u73a9\uff0c\u6bd4\u5982\u6211\u53ef\u4ee5\u5728\u4e00\u4e2a\u65b9\u6cd5\u4e2d\uff0c\u6267\u884c\u591a\u4e2a\u6570\u636e\u5e93\u64cd\u4f5c\uff0c\u4f46\u4f7f\u7528\u4e0d\u540c\u7684\u4e8b\u52a1\u8d44\u6e90\uff1a<\/p>\n
                  Integer rows = new TransactionTemplate((PlatformTransactionManager) transactionManager,\n                                       new DefaultTransactionDefinition(TransactionDefinition.ISOLATION_READ_UNCOMMITTED))\n    .execute(new TransactionCallback<Integer>() {\n        @Override\n        public Integer doInTransaction(TransactionStatus status) {\n            \/\/ update 0\n            int rows0 = jdbcTemplate.update(...);\n            \n            \/\/ update 1\n            int rows1 = jdbcTemplate.update(...);\n            return rows0 + rows1;\n        }\n    });\n\nInteger rows2 = new TransactionTemplate((PlatformTransactionManager) transactionManager,\n                                        new DefaultTransactionDefinition(TransactionDefinition.ISOLATION_READ_UNCOMMITTED))\n    .execute(new TransactionCallback<Integer>() {\n        @Override\n        public Integer doInTransaction(TransactionStatus status) {\n            \n            \/\/ update 2\n            int rows2 = jdbcTemplate.update(...);\n            return rows2;\n        }\n    });\n\n\n\n\n<\/code><\/pre>\n
                  \u5728\u4e0a\u9762\u8fd9\u4e2a\u4f8b\u5b50\u91cc\uff0c\u901a\u8fc7 TransactionTemplate \u6211\u4eec\u53ef\u4ee5\u7cbe\u786e\u7684\u63a7\u5236 update0\/update1 \u4f7f\u7528\u540c\u4e00\u4e2a\u4e8b\u52a1\u8d44\u6e90\u548c\u9694\u79bb\u7ea7\u522b\uff0c\u800c update2 \u5355\u72ec\u4f7f\u7528\u4e00\u4e2a\u4e8b\u52a1\u8d44\u6e90\uff0c\u5e76\u4e14\u4e0d\u9700\u8981\u65b0\u5efa\u7c7b\u52a0\u6ce8\u89e3\u7684\u65b9\u5f0f\u3002<\/p>\n
                  \u624b\u81ea\u4e00\u4f53\u53ef\u4ee5\u5417\uff1f<\/h3>\n
                  \u5f53\u7136\u53ef\u4ee5\uff0c\u53ea\u8981\u6211\u4eec\u4f7f\u7528\u7684\u662f\u540c\u4e00\u4e2a\u4e8b\u52a1\u7ba1\u7406\u5668\u7684\u5b9e\u4f8b\uff0c\u56e0\u4e3a\u7ed1\u5b9a\u8d44\u6e90\u5230\u540c\u6b65\u8d44\u6e90\u7ba1\u7406\u5668\u8fd9\u4e2a\u64cd\u4f5c\u662f\u5728\u4e8b\u52a1\u7ba1\u7406\u5668\u4e2d\u8fdb\u884c\u7684\u3002<\/p>\n
                  AOP \u7248\u672c\u7684\u4e8b\u52a1\u7ba1\u7406\u91cc\uff0c\u540c\u6837\u53ef\u4ee5\u4f7f\u7528\u624b\u52a8\u6321\u7684\u4e8b\u52a1\u7ba1\u7406\u7ee7\u7eed\u64cd\u4f5c\uff0c\u800c\u4e14\u8fd8\u53ef\u4ee5\u4f7f\u7528\u540c\u4e00\u4e2a\u4e8b\u52a1\u8d44\u6e90 \u3002<\/p>\n
                  \u6bd4\u5982\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\uff0cupdate1\/update2 \u4ecd\u7136\u5728\u4e00\u4e2a\u4e8b\u52a1\u5185\uff0c\u5e76\u4e14 update2 \u7684 callback \u7ed3\u675f\u540e\u5e76\u4e0d\u4f1a\u63d0\u4ea4\u4e8b\u52a1\uff0c\u4e8b\u52a1\u6700\u7ec8\u4f1a\u5728 methodA \u7ed3\u675f\u65f6\uff0cTransactionInterceptor \u4e2d\u624d\u4f1a\u63d0\u4ea4<\/p>\n
                  @Transactional\npublic void methodA(){\n    \n    \/\/ update 1\n    jdbcTemplate.update(...);\n    new TransactionTemplate((PlatformTransactionManager) transactionManager,\n                                        new DefaultTransactionDefinition(TransactionDefinition.ISOLATION_READ_UNCOMMITTED))\n    .execute(new TransactionCallback<Integer>() {\n        @Override\n        public Integer doInTransaction(TransactionStatus status) {\n            \n            \/\/ update 2\n            int rows2 = jdbcTemplate.update(...);\n            return rows2;\n        }\n    });\n   \n}\n\n\n\n\n<\/code><\/pre>\n
                  \u603b\u7ed3<\/h2>\n
                  Spring \u7684\u4e8b\u52a1\u7ba1\u7406\uff0c\u5176\u6838\u5fc3\u662f\u4e00\u4e2a\u62bd\u8c61\u7684\u4e8b\u52a1\u7ba1\u7406\u5668\uff0cXML\/@Transactional\/TransactionTemplate \u51e0\u79cd\u65b9\u5f0f\u90fd\u662f\u57fa\u4e8e\u8fd9\u4e2a\u4e8b\u52a1\u7ba1\u7406\u5668\u7684\uff0c\u4e09\u4e2d\u65b9\u5f0f\u7684\u6838\u5fc3\u5b9e\u73b0\u533a\u522b\u5e76\u4e0d\u5927\uff0c\u53ea\u662f\u5165\u53e3\u4e0d\u540c\u800c\u5df2\u3002<\/p>\n
                  \"image.png\"  
                  \u200b  
                  \u672c\u6587\u4e3a\u4e86\u65b9\u4fbf\u7406\u89e3\uff0c\u7701\u7565\u4e86\u5927\u91cf\u7684\u975e\u5173\u952e\u5b9e\u73b0\u7ec6\u8282\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6709\u90e8\u5206\u63cf\u8ff0\u4e0d\u4e25\u8c28\u7684\u5730\u65b9\uff0c\u5982\u6709\u95ee\u9898\u6b22\u8fce\u8bc4\u8bba\u533a\u7559\u8a00\u3002<\/p>\n
                  \n
                  \u4f5c\u8005\uff1a\u4eac\u4e1c\u4fdd\u9669 \u848b\u4fe1<\/p>\n
                  \u6765\u6e90\uff1a\u4eac\u4e1c\u4e91\u5f00\u53d1\u8005\u793e\u533a \u8f6c\u8f7d\u8bf7\u6ce8\u660e\u6765\u6e90<\/p>\n<\/blockquote>\n
                  https:\/\/segmentfault.com\/a\/1190000044141392<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
                  \u4e8b\u52a1\u7ba1\u7406\uff0c\u4e00\u4e2a\u88ab\u8bf4\u70c2\u7684\u4e5f\u88ab\u770b\u70c2\u7684\u8bdd\u9898\uff0c\u8fd8\u662f\u516b\u80a1\u6587\u4e2d\u7684\u57fa\u7840\u80a1\u4e4b\u4e00\u3002\u200b \u672c\u6587\u4f1a\u4ece\u8bbe\u8ba1\u89d2\u5ea6\uff0c\u4e00\u6b65\u6b65\u7684\u5256\u6790 Sprin […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4],"tags":[],"class_list":["post-10008144","post","type-post","status-publish","format-standard","hentry","category-share"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008144","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10008144"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10008144\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10008144"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10008144"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10008144"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}