{"id":10006854,"date":"2022-11-17T00:02:10","date_gmt":"2022-11-16T16:02:10","guid":{"rendered":"https:\/\/ityet.com\/?p=10006854"},"modified":"2022-11-17T00:02:10","modified_gmt":"2022-11-16T16:02:10","slug":"springboot3%e6%ad%a3%e5%bc%8f%e7%89%88%e5%b0%86%e4%ba%8e11%e6%9c%8824%e6%97%a5%e5%8f%91%e5%b8%83%ef%bc%9a%e9%83%bd%e6%9c%89%e5%93%aa%e4%ba%9b%e6%96%b0%e7%89%b9%e6%80%a7%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006854","title":{"rendered":"SpringBoot3\u6b63\u5f0f\u7248\u5c06\u4e8e11\u670824\u65e5\u53d1\u5e03\uff1a\u90fd\u6709\u54ea\u4e9b\u65b0\u7279\u6027\uff1f"},"content":{"rendered":"

\u4ece 2018 \u5e74 2 \u6708 28 \u53f7\u53d1\u5e03 Spring Boot 2.0 \u7248\u672c\u5f00\u59cb\uff0c\u6574\u4e2a 2.X \u7248\u672c\u5df2\u7ecf\u7ecf\u8fc7\u4e86 4 \u5e74\u591a\u7684\u65f6\u95f4\uff0c\u7d2f\u8ba1\u53d1\u5e03\u4e86 95 \u4e2a\u4e0d\u540c\u7684\u7248\u672c\uff0c\u800c\u5c31\u5728\u524d\u4e0d\u4e45\uff0c2.X \u7cfb\u5217\u7684\u4e5f\u5df2\u7ecf\u8fce\u6765\u4e86\u4ed6\u7684\u6700\u7ec8\u7248\u672c\uff1a2.7\u3002<\/p>\n

\u524d\u51e0\u5929\u6211\u8fd8\u5199\u4e86\u4e00\u7bc7\u5173\u4e8e Spring Boot \u4ece 2.1 \u7248\u672c\u5347\u7ea7\u5230 2.7 \u7684\u6587\u7ae0\uff0c\u800c\u73b0\u5728\uff0cSpring Boot 3.0 \u4e5f\u8981\u6765\u4e86\uff01<\/p>\n

\u65f6\u95f4\u5c31\u5b9a\u5728\u672c\u6708\u7684 24 \u53f7\uff0cSpring Boot \u5c06\u8981\u53d1\u5e03 3.0 \u7684\u6700\u7ec8 RELEASE \u7248\u672c\u3002<\/p>\n

\u622a\u6b62\u5230\u73b0\u5728\u4e3a\u6b62\uff0cSpring Boot3\u5df2\u7ecf\u53d1\u5e03\u4e86 6 \u4e2a\u7248\u672c\uff0c\u7d2f\u8ba1 5 \u4e2a\u91cc\u7a0b\u7891\u7248\u672c\uff0c2 \u4e2a RC \u5019\u9009\u7248\uff0c\u73b0\u5728\u5c31\u8ddf\u7740\u6211\u4e00\u8d77\u770b\u4e0b Spring Boot 3.0 \u5c06\u4f1a\u8981\u54ea\u4e9b\u91cd\u5927\u7684\u53d8\u5316\u3002<\/p>\n

JAVA 17<\/h2>\n

\u5bf9\u4e8e\u6211\u4eec\u6bd4\u8f83\u5173\u6ce8\u7684\u7b2c\u4e00\u4e2a\u6700\u91cd\u8981\u7684\u4e8b\u60c5\u5c31\u662f\uff0cSpring Boot3 \u7248\u672c\u6700\u4f4e\u652f\u6301 Java17\uff0c\u8fd8\u5728\u4e07\u5e74 Java8 \u7684\u540c\u5b66\uff0c\u8be5\u5347\u7ea7\u5c31\u5347\u7ea7\u4e86\u5427\uff0c\u8fd9\u91cc\u4ecb\u7ecd\u4e00\u4e0b\u5173\u4e8e Java17 \u4e4b\u540e\u7684\u4e00\u4e9b\u91cd\u8981\u6539\u53d8\u3002<\/p>\n

record<\/h3>\n

record \u662f\u5728 Java14\u4e2d\u5f15\u5165\u7684\uff0chttps:\/\/openjdk.org\/jeps\/395<\/a> \u3002<\/p>\n

\u4ee5\u524d\u6211\u4eec\u5199\u4e00\u4e2a\u7c7b\u9700\u8981\u5199\u4e00\u5806 get\u3001set \u65b9\u6cd5\uff0c\u540e\u6765\u6709\u4e86lombok<\/code>\u4e4b\u540e\u8fd9\u4e9b\u90fd\u7701\u4e86\uff0c\u73b0\u5728 Java \u7ed9\u6211\u4eec\u63d0\u4f9b\u4e86\u539f\u751f\u7684\u5199\u6cd5\u3002<\/p>\n

public record User() {}<\/code><\/pre>\n
\u672c\u8d28\u4e0a record \u4fee\u9970\u4e4b\u540e\u7684\u7c7b\u5c31\u662f\u4e00\u4e2a final \u7c7b\uff0c\u800c\u4e14\u4ed6\u7684\u7236\u7c7b\u4e0d\u662f Object\uff0c\u4e5f\u4e0d\u662f\u4f59\u67d0\u519b\uff0c\u800c\u662f java.lang.Record<\/code>\u3002<\/p>\n
record \u7c7b\u5c5e\u6027\u53ea\u80fd\u58f0\u660e\u5728\u5934\u90e8\uff0c\u6240\u6709\u7684\u6210\u5458\u53d8\u91cf\u90fd\u662f public final \u7684\uff0c\u800c\u4e14\u53ea\u80fd\u58f0\u660e\u9759\u6001\u5c5e\u6027\uff0c\u4f46\u662f\u53ef\u4ee5\u58f0\u660e\u6210\u5458\u65b9\u6cd5\u548c\u9759\u6001\u65b9\u6cd5\u3002<\/p>\n
public record User(String username) {\n    static int id;\n    public String getName(){\n        return this.username;\n    }\n}<\/code><\/pre>\n
text blocks<\/h3>\n
text blocks \u6587\u672c\u5757\u662f\u5728 Java13 \u5f15\u5165\u7684\uff0c\u5e76\u4e14\u5728 Java15 \u7248\u672c\u6210\u4e3a\u6c38\u4e45\u7279\u6027\uff0chttps:\/\/openjdk.org\/jeps\/378<\/a>\u3002<\/p>\n
\u4ee5\u524d\u6211\u4eec\u590d\u5236\u4e00\u4e2a\u591a\u884c\u7684\u5b57\u7b26\u4e32\u5230 Java \u91cc\uff0c\u4f1a\u81ea\u52a8\u52a0\u4e0a\u884c\u7ec8\u6b62\u7b26\u3002<\/p>\n
 String sql = "SELECT\/n" +\n                "\/t* \/n" +\n                "FROM\/n" +\n                "\/tsys_user0 \/n" +\n                "WHERE\/n" +\n                "\/tuser_name = 'abc'";<\/code><\/pre>\n
\u800c\u6709\u4e86\u6587\u672c\u5757\u7684\u529f\u80fd\u4e4b\u540e\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u65b9\u4fbf\u7684\u5b9a\u4e49\u5305\u542b\u591a\u884c\u6587\u672c\u7684\u5b57\u7b26\u4e32\u5b57\u9762\u91cf\uff0c\u4ed6\u4f7f\u7528\u4e09\u5f15\u53f7\u4f5c\u4e3a\u5f00\u59cb\u548c\u7ed3\u675f\u7684\u5206\u9694\u7b26\u3002<\/p>\n
String sqlBlock = """\n                SELECT\n                    *\n                FROM\n                    sys_user0\n                WHERE\n                    user_name = 'abc'\n                """;<\/code><\/pre>\n
switch\u8868\u8fbe\u5f0f<\/h3>\n
switch\u8868\u8fbe\u5f0f\u662f\u5728 Java12 \u4e2d\u5f15\u5165\u7684\uff0c\u5728 Java14 \u6210\u4e3a\u6c38\u4e45\u7279\u6027\uff0chttps:\/\/openjdk.org\/jeps\/361<\/a>\u3002<\/p>\n
\u5347\u7ea7\u540e\u7684 switch \u5176\u5b9e\u5305\u542b\u4e24\u4e2a\u7279\u6027\uff0c\u4e00\u4e2a\u662f\u5141\u8bb8 case \u4f7f\u7528\u591a\u4e2a\u5e38\u91cf\uff0c\u53e6\u5916\u4e00\u4e2a\u5c31\u662f\u6709\u8fd4\u56de\u503c\u3002<\/p>\n
\u65b0\u589ecase x-><\/code> \u8bed\u6cd5\uff0c\u4f7f\u7528\u65b9\u9762\u66f4\u52a0\u7b80\u6d01\uff0c\u800c\u4e14\u4e0d\u9700\u8981\u518d\u6bcf\u4e2a case \u5199\u4e00\u4e2a break\u4e86\u3002<\/p>\n
String name = "xiao";\nint ret = switch (name) {\n  case "ai" -> 1;\n  case "xiao", "xian" -> 2;\n  default -> 0;\n};<\/code><\/pre>\n
Pattern Matching \u6a21\u5f0f\u5339\u914d<\/h3>\n
\u6a21\u5f0f\u5339\u914d\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u7b80\u5316instanceof<\/code>\u4ee3\u7801\u3002<\/p>\n
if (obj instanceof String s) {\n    System.out.println(s.toLowerCase());\n}<\/code><\/pre>\n
\u8fd8\u53ef\u4ee5\u5728 switch-case \u8bed\u53e5\u4f7f\u7528\uff1a<\/p>\n
static double getDoubleUsingSwitch(Object o) {\n    return switch (o) {\n        case Integer i -> i.doubleValue();\n        case Float f -> f.doubleValue();\n        case String s -> Double.parseDouble(s);\n        default -> 0d;\n    };\n}<\/code><\/pre>\n
sealed \u5bc6\u5c01\u7c7b<\/h3>\n
sealed \u5728 Java15\u4e2d\u5f15\u5165\uff0c\u5728 Java17\u6210\u4e3a\u6c38\u4e45\u7279\u6027\u3002<\/p>\n
sealed \u5bc6\u5c01\u7c7b\u7684\u4e3b\u8981\u4f5c\u7528\u5c31\u662f\u9650\u5236\u7c7b\u7684\u7ee7\u627f\u3002<\/p>\n
\u6bd4\u5982\u6211\u4eec\u6709 Animal\u7c7b\uff0cDog \u548c Cat \u5206\u522b\u7ee7\u627f\u5b83\uff0c\u5b9e\u73b0\u4e86 eat \u65b9\u6cd5\uff0c\u4ed6\u4eec\u5403\u7684\u52a8\u4f5c\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u4f46\u662f\u6211\u4eec\u4e0d\u5e0c\u671b\u4eba\u80fd\u7ee7\u627f Animal\uff0c\u4e0d\u5141\u8bb8\u4ed6\u53bb\u7ee7\u627f\u52a8\u7269\u5403\u7684\u884c\u4e3a\uff0c\u5c31\u53ef\u4ee5\u50cf\u4e0b\u9762\u8fd9\u6837\u901a\u8fc7 sealed \u548c permits \u5173\u952e\u5b57\u9650\u5236\u5b83\u662f\u4e00\u4e2a\u5bc6\u5c01\u7c7b\uff0c\u53ea\u6709\u732b\u548c\u72d7\u80fd\u591f\u7ee7\u627f\u5b83\u3002<\/p>\n
\u9700\u8981\u6ce8\u610f\uff0c\u7236\u7c7b\u88ab\u5b9a\u4e49\u4e3a sealed \u4e4b\u540e\uff0c\u5b50\u7c7b\u5fc5\u987b\u662f sealed\u3001 non-sealed \u6216\u8005 final\u3002<\/p>\n
public abstract sealed class Animal permits Cat, Dog {\n\n    public abstract void eat();\n}\n\npublic non-sealed class Dog extends Animal{\n    @Override\n    public void eat() {\n        System.out.println("dog eat");\n    }\n}\n\npublic non-sealed class Cat extends Animal{\n    @Override\n    public void eat() {\n        System.out.println("cat eat");\n    }\n}<\/code><\/pre>\n
Jakarta EE 9<\/h2>\n
\u53e6\u5916\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u53d8\u5316\u5c31\u662f\u672c\u6b21\u5347\u7ea7\u4e4b\u540e\uff0c\u6700\u4f4e\u53ea\u652f\u6301 Jakarta EE 9\uff0c\u4f7f\u7528 Servlet5.0 \u548c JPA3.0 \u89c4\u8303\uff0c\u4e0d\u8fc7\u6700\u65b0\u7248\u672cRC2\u5df2\u7ecf\u5347\u7ea7\u5230\u4e86 JakartaEE 10\uff0c\u9ed8\u8ba4\u4f7f\u7528 Servlet6.0 \u548c JPA3.1 \u89c4\u8303\u3002<\/p>\n
\u6709\u4e9b\u540c\u5b66\u53ef\u80fd\u8fde Jakarta \u662f\u4ec0\u4e48\u90fd\u4e0d\u77e5\u9053\uff0c\u8fd9\u4e2a\u82f1\u6587\u5355\u8bcd\u662f\u5370\u5c3c\u9996\u90fd\u96c5\u52a0\u8fbe\u7684\u610f\u601d\uff0c\u5176\u5b9e\u5c31\u662f\u6211\u4eec\u77e5\u9053\u7684 JavaEE \u6539\u540d\u4e4b\u540e\u5c31\u53eb JakartaEE\uff0c\u6bd4\u5982\u6211\u4eec\u4e4b\u524d\u7684javax.servlet<\/code>\u5305\u73b0\u5728\u5c31\u53ebjakarta.servlet<\/code>\u3002<\/p>\n
\u4e5f\u56e0\u6b64\uff0c\u4ee3\u7801\u4e2d\u6240\u6709\u4f7f\u7528\u5230\u6bd4\u5982 HttpServletRequest<\/em> \u5bf9\u8c61\u7684 import \u90fd\u9700\u8981\u4fee\u6539\u3002<\/p>\n
import javax.servlet.http.HttpServletRequest;\n\u6539\u4e3a\nimport jakarta.servlet.http.HttpServletRequest;<\/code><\/pre>\n
Spring Native<\/h2>\n
Spring Native \u4e5f\u662f\u5347\u7ea7\u7684\u4e00\u4e2a\u91cd\u5927\u7279\u6027\uff0c\u652f\u6301\u4f7f\u7528 GraalVM \u5c06 Spring \u7684\u5e94\u7528\u7a0b\u5e8f\u7f16\u8bd1\u6210\u672c\u5730\u53ef\u6267\u884c\u7684\u955c\u50cf\u6587\u4ef6\uff0c\u53ef\u4ee5\u663e\u8457\u63d0\u5347\u542f\u52a8\u901f\u5ea6\u3001\u5cf0\u503c\u6027\u80fd\u4ee5\u53ca\u51cf\u5c11\u5185\u5b58\u4f7f\u7528\u3002<\/p>\n
\u6211\u4eec\u4f20\u7edf\u7684\u5e94\u7528\u90fd\u662f\u7f16\u8bd1\u6210\u5b57\u8282\u7801\uff0c\u7136\u540e\u901a\u8fc7 JVM \u89e3\u91ca\u5e76\u6700\u7ec8\u7f16\u8bd1\u6210\u673a\u5668\u7801\u6765\u8fd0\u884c\uff0c\u800c Spring Native \u5219\u662f\u901a\u8fc7 AOT \u63d0\u524d\u7f16\u8bd1\u4e3a\u673a\u5668\u7801\uff0c\u5728\u8fd0\u884c\u65f6\u76f4\u63a5\u9759\u6001\u7f16\u8bd1\u6210\u53ef\u6267\u884c\u6587\u4ef6\uff0c\u4e0d\u4f9d\u8d56 JVM\u3002<\/p>\n
\u5173\u4e8e AOT \u6280\u672f\uff0c\u5728\u6211\u4e4b\u524d\u5199\u8fc7\u7684\u6587\u7ae0\u4e2d\u6709\u63d0\u53ca\u5230\uff1a\u8fd9\u6837\u4f18\u5316Spring Boot\uff0c\u542f\u52a8\u901f\u5ea6\u5feb\u5230\u98de\u8d77!<\/a>\u3002<\/p>\n
\u6f14\u793a<\/h3>\n
\u8fd9\u91cc\u6211\u7b80\u5355\u6f14\u793a\u4e00\u4e0b\u600e\u4e48\u4f7f\u7528\uff0c\u9996\u5148\u6211\u4eec\u9700\u8981\u505a\u4e00\u4e9b\u51c6\u5907\u5de5\u4f5c\uff1a<\/p>\n
    \n
  1. https:\/\/www.graalvm.org\/downl…<\/a> \u4e0b\u8f7dGraalVM\uff0c\u6307\u5b9aJAVA_HOME<\/code>\uff0cexport JAVA_HOME=\/Users\/user\/Desktop\/graalvm-ce-java17-22.3.0\/Contents\/Home<\/li>\n
  2. \u4e0b\u8f7d\u4e2a\u65b0\u4e00\u70b9\u7684 IDEA\uff0c\u6bd4\u5982\u6211\u4f7f\u7528\u7684\u662f\u6700\u65b0\u7684 EAP \u7248\u672c<\/li>\n
  3. \u4e0b\u8f7d\u4e2a\u65b0\u4e00\u70b9\u7684 JDK\uff0c\u6bd4\u5982\u4f7f\u7528 JDK17<\/li>\n<\/ol>\n
    \u7136\u540e\u901a\u8fc7 Spring Initialzr \u521b\u5efa\u4e00\u4e2a\u65b0\u9879\u76ee\uff0c\u4f7f\u7528\u6700\u65b0\u7248\u672cSpring Boot 3.0.0-SNAPSHOT\uff0c\u52fe\u9009GraalVM Native Support<\/code>\uff0c\u521b\u5efa\u597d\u9879\u76ee\u4e4b\u540e\u6dfb\u52a0\u4e00\u4e2a\u6d4b\u8bd5\u7684Controller<\/code>\u3002<\/p>\n
    @RestController\npublic class TestController {\n\n    @GetMapping("\/")\n    public String hello(){\n        return "GraalVM ...";\n    }\n}<\/code><\/pre>\n
    \u7136\u540e\u76f4\u63a5\u8fd0\u884c\u7a0b\u5e8f\uff0c\u53d1\u73b0\u542f\u52a8\u65f6\u95f4\u82b1\u8d39\u4e86\u5927\u6982 1 \u79d2\u3002<\/p>\n
    \"\"<\/p>\n
    \u7136\u540e\u6267\u884c\u547d\u4ee4\uff0c\u751f\u6210\u955c\u50cf\u6587\u4ef6\uff1a<\/p>\n
     .\/gradlew nativeCompile<\/code><\/pre>\n
    \u8fd9\u4e2a\u8fc7\u7a0b\u633a\u8017\u65f6\u7684\uff0c\u82b1\u4e86\u5927\u6982 2 \u5206\u591a\u949f\u624d\u751f\u6210\u597d\u3002<\/p>\n
    \"\"<\/p>\n
    \u6700\u540e\u6267\u884c\u547d\u4ee4\uff1a<\/p>\n
    .\/build\/native\/nativeCompile\/demo2<\/code><\/pre>\n
    \u6211\u4eec\u770b\u5230\uff0c\u6700\u7ec8\u542f\u52a8\u65f6\u95f4\u662f 0.082 \u79d2\uff0c\u5feb\u4e86 10 \u591a\u500d\u3002<\/p>\n
    \"\"<\/p>\n
    \u8fd9\u91cc\u6211\u4f7f\u7528\u7684\u662f gradle\uff0c\u5982\u679c\u4f7f\u7528 maven \u7684\u8bdd\uff0c\u4f7f\u7528\u5982\u4e0b\u7684\u547d\u4ee4\uff1a<\/p>\n
    1. mvnw -Pnative native:compile\n2. .\/target\/demo2<\/code><\/pre>\n
    \u5176\u4ed6\u4f9d\u8d56\u5347\u7ea7<\/h2>\n
    Spring Boot 3 \u6700\u4f4e\u4f9d\u8d56 Spring6 \u7248\u672c\uff0c\u56e0\u6b64\u5bf9\u5e94\u7684 Spring \u7248\u672c\u4e5f\u8be5\u6362\u4e86\uff08\u4e0d\u4f1a\u6709\u4eba\u8fd8\u5728\u7528 Spring2 \u7684\u5427\uff09\uff0c\u5176\u4ed6\u7684\u4f9d\u8d56\u5347\u7ea7\u5982\u4e0b\uff1a<\/p>\n