新增全局异常处理和幂等性相关功能

- 添加全局异常处理器 GlobalExceptionHandler，统一处理系统异常- 新增 HTTP 状态码常量类 HttpStatus
- 实现幂等性测试控制器 IdempotenceController，包括插入、更新和 Token验证操作
- 优化 TestController，调整请求映射为 POST 方法
- 新增 pom.xml 文件，配置 Spring Boot 项目依赖，包括 Knife4j、FastJson、hutool、AOP、MySQL 连接器、RabbitMQ 和 Redis 等
- 创建 SpringDemoApplication 启动类，启动 Spring Boot 应用程序

ForJdk17/src/main/java/cn/whaifree/redo/redo_all_240924/LeetCode274.java

@@ -0,0 +1,30 @@
+package cn.whaifree.redo.redo_all_240924;
+
+import java.util.Arrays;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/10/11 11:49
+ * @注释
+ */
+public class LeetCode274 {
+
+    class Solution {
+        public int hIndex(int[] citations) {
+            Arrays.sort(citations);
+
+            // 0 1 3 5 6
+            // | i | h |
+            for (int i = 0; i < citations.length; i++) {
+                int h = citations.length - i;
+                if (citations[i] >= h) {
+                    return h;
+                }
+            }
+            return 0;
+        }
+
+    }
+
+}

springDemo/pom.xml

@@ -0,0 +1,119 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>3.3.4</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>cn.whaifree</groupId>
+    <artifactId>springDemo</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>springDemo</name>
+    <description>springDemo</description>
+    <url/>
+    <licenses>
+        <license/>
+    </licenses>
+    <developers>
+        <developer/>
+    </developers>
+    <scm>
+        <connection/>
+        <developerConnection/>
+        <tag/>
+        <url/>
+    </scm>
+    <properties>
+        <java.version>17</java.version>
+    </properties>
+    <dependencies>
+
+        <dependency>
+            <groupId>com.github.xiaoymin</groupId>
+            <artifactId>knife4j-openapi3-jakarta-spring-boot-starter</artifactId>
+            <version>4.4.0</version>
+        </dependency>
+
+
+        <!--FastJson-->
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+            <version>2.0.36</version>
+        </dependency>
+        <!--hutool-->
+        <dependency>
+            <groupId>cn.hutool</groupId>
+            <artifactId>hutool-all</artifactId>
+            <version>5.8.13</version>
+        </dependency>
+        <!--aspect-->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-aop</artifactId>
+        </dependency>
+        <dependency>
+            <artifactId>mysql-connector-java</artifactId>
+            <!--jdbc-->
+            <groupId>mysql</groupId>
+            <version>8.0.33</version>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-amqp</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-jdbc</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-data-redis</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-jdbc</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.amqp</groupId>
+            <artifactId>spring-rabbit-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <excludes>
+                        <exclude>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                        </exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

springDemo/src/main/java/cn/whaifree/springdemo/SpringDemoApplication.java

@@ -0,0 +1,13 @@
+package cn.whaifree.springdemo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SpringDemoApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringDemoApplication.class, args);
+    }
+
+}

springDemo/src/main/java/cn/whaifree/springdemo/config/GlobalExceptionHandler.java

@@ -0,0 +1,23 @@
+package cn.whaifree.springdemo.config;
+
+import cn.whaifree.springdemo.utils.ResVo;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/10/11 16:28
+ * @注释
+ */
+@RestControllerAdvice
+@Slf4j
+public class GlobalExceptionHandler{
+    @ExceptionHandler(Exception.class)
+    public ResVo handleException(Exception e) {
+        log.error("系统异常", e);
+        return ResVo.error(e.getMessage());
+    }
+
+}

springDemo/src/main/java/cn/whaifree/springdemo/controller/TestController.java

@@ -2,8 +2,8 @@ package cn.whaifree.springdemo.controller;
 
 import cn.whaifree.springdemo.aspect.annotation.RateLimiter;
 import cn.whaifree.springdemo.constant.LimitType;
+import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
 import java.util.List;
@@ -17,7 +17,7 @@ import java.util.concurrent.*;
  */
 @RestController
 public class TestController {
-    @RequestMapping("/test")
+    @PostMapping("/test")
     @RateLimiter(key = "test:", time = 10, count = 1) // 10s只能1次
     public String test() {
         return "test";
@@ -31,7 +31,7 @@ public class TestController {
      *
      * @return
      */
-    @RequestMapping("addContainer")
+    @PostMapping("addContainer")
     @RateLimiter(key = "addContainer:", limitType = LimitType.USER, time = 5, count = 1) // 10s只能1次
     public String addContainerInstanceToCluster(@RequestBody List<String> instances, int userId) {
         // 导入容器节点到集群中

springDemo/src/main/java/cn/whaifree/springdemo/controller/idempotence/IdempotenceController.java

@@ -0,0 +1,135 @@
+package cn.whaifree.springdemo.controller.idempotence;
+
+import cn.whaifree.springdemo.utils.ResVo;
+import com.alibaba.fastjson.JSON;
+import jakarta.annotation.Resource;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.core.script.DefaultRedisScript;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.sql.PreparedStatement;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * 幂等性测试
+ *
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/10/11 16:06
+ * @注释
+ */
+@RestController
+@RequestMapping("/idempotence")
+public class IdempotenceController {
+
+    @Resource
+    JdbcTemplate jdbcTemplate;
+    @Resource
+    RedisTemplate<String, Object> redisTemplate;
+
+    @PostMapping("query")
+    public ResVo query() {
+        List<Map<String, Object>> maps = jdbcTemplate.queryForList("select * from orders");
+        return ResVo.success(JSON.toJSONString(maps));
+    }
+
+    /**
+     * CREATE TABLE `orders` (
+     * `id` INT AUTO_INCREMENT PRIMARY KEY,
+     * `order_no` VARCHAR(100) UNIQUE NOT NULL COMMENT '订单号', -- 唯一
+     * `user_id` INT NOT NULL COMMENT '用户ID',
+     * `total_amount` DECIMAL(10,2) NOT NULL COMMENT '订单总金额',
+     * `status` TINYINT DEFAULT 0 COMMENT '订单状态: 0-未支付, 1-已支付',
+     * `create_time` TIMESTAMP DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间'
+     * );
+     * <p>
+     * java.sql.SQLIntegrityConstraintViolationException: Duplicate entry '1' for key 'order_no'
+     * at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:118) ~[mysql-connector-j-8.0.33.jar:8.0.33]
+     * at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) ~[mysql-connector-j-8.0.33.jar:8.0.33]
+     *
+     * @param orderId
+     * @param userId
+     * @param totalAmount
+     * @return
+     */
+    @PostMapping("insertByMySQL")
+    public ResVo insertMySQL(String orderId, String userId, Integer totalAmount) {
+
+        int update = jdbcTemplate.update(con -> {
+            PreparedStatement preparedStatement = con.prepareStatement(
+                    "INSERT INTO orders (order_no, user_id, total_amount) " +
+                            "VALUES (?, ?, ?);"
+            );
+            preparedStatement.setString(1, orderId);
+            preparedStatement.setString(2, userId);
+            preparedStatement.setString(3, String.valueOf(totalAmount));
+            return preparedStatement;
+        });
+
+        return update > 0 ? ResVo.success("插入成功") : ResVo.error("插入失败");
+    }
+
+    /**
+     * 适用于更新操作
+     *
+     * @return
+     */
+    @PostMapping("upadteCAS")
+    public ResVo updateCAS(String orderId, Integer totalAmount, Integer originVersion) {
+
+        int update = jdbcTemplate.update(con -> {
+            PreparedStatement preparedStatement = con.prepareStatement(
+                    "UPDATE orders " +
+                            "SET total_amount = ?, version=version+1 " +
+                            "WHERE order_no = ? AND version = ?");
+            preparedStatement.setInt(1, totalAmount);
+            preparedStatement.setString(2, orderId);
+            preparedStatement.setInt(3, originVersion);
+            return preparedStatement;
+        });
+
+
+        return update > 0 ? ResVo.success("更新成功") : ResVo.error("更新失败");
+    }
+
+
+    final String tokenV = "tokenV";
+
+    /**
+     * Token防刷
+     */
+    @PostMapping("token")
+    public ResVo generateToken() {
+        // 生成UUID
+        String s = UUID.randomUUID().toString();
+        String key = "token:" + s;
+        redisTemplate.opsForValue().set(key, tokenV, 60, TimeUnit.SECONDS);
+        return ResVo.success(key);
+    }
+
+    @PostMapping("tokenCheck")
+    public ResVo tokenCheck(String key) {
+        String script =
+                // 有这个token则通过，并且删除，只能一次性使用
+                "if redis.call('get',KEYS[1]) == ARGV[1] " + // key argv为参数
+                "then " +
+                        "return redis.call('del',KEYS[1]) " +
+                "else " +
+                        "return 0 end";
+
+        DefaultRedisScript<Long> tDefaultRedisScript = new DefaultRedisScript<>(script, Long.class);
+
+        Long execute = redisTemplate.execute(tDefaultRedisScript, Arrays.asList(key), tokenV);
+        if (execute == 0) {
+            throw new RuntimeException("未通过");
+        }
+        return ResVo.success("通过");
+    }
+}

springDemo/src/main/java/cn/whaifree/springdemo/utils/ResVo.java

@@ -0,0 +1,196 @@
+package cn.whaifree.springdemo.utils;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/10/11 16:30
+ * @注释
+ */
+
+
+import cn.whaifree.springdemo.utils.constants.HttpStatus;
+
+import java.util.HashMap;
+
+/**
+ * 操作消息提醒
+ *
+ * @author /
+ */
+public class ResVo extends HashMap<String, Object>
+{
+    private static final long serialVersionUID = 1L;
+
+    /** 状态码 */
+    public static final String CODE_TAG = "code";
+
+    /** 返回内容 */
+    public static final String MSG_TAG = "msg";
+
+    /** 数据对象 */
+    public static final String DATA_TAG = "data";
+
+    /**
+     * 初始化一个新创建的 ResVo 对象，使其表示一个空消息。
+     */
+    public ResVo()
+    {
+    }
+
+    /**
+     * 初始化一个新创建的 ResVo 对象
+     *
+     * @param code 状态码
+     * @param msg 返回内容
+     */
+    public ResVo(int code, String msg)
+    {
+        super.put(CODE_TAG, code);
+        super.put(MSG_TAG, msg);
+    }
+
+    public boolean isEmpty(){
+        return super.get(CODE_TAG).equals(HttpStatus.FOUND);
+    }
+
+    /**
+     * 初始化一个新创建的 ResVo 对象
+     *
+     * @param code 状态码
+     * @param msg 返回内容
+     * @param data 数据对象
+     */
+    public ResVo(int code, String msg, Object data)
+    {
+        super.put(CODE_TAG, code);
+        super.put(MSG_TAG, msg);
+        if (data != null) {
+            super.put(DATA_TAG, data);
+        }
+    }
+
+    /**
+     * 返回成功消息
+     *
+     * @return 成功消息
+     */
+    public static ResVo success()
+    {
+        return ResVo.success("操作成功");
+    }
+
+    /**
+     * 返回成功数据
+     *
+     * @return 成功消息
+     */
+    public static ResVo success(Object data)
+    {
+        return ResVo.success("操作成功", data);
+    }
+
+    /**
+     * 返回成功消息
+     *
+     * @param msg 返回内容
+     * @return 成功消息
+     */
+    public static ResVo success(String msg)
+    {
+        return ResVo.success(msg, null);
+    }
+
+    /**
+     * 返回成功消息
+     *
+     * @param msg 返回内容
+     * @param data 数据对象
+     * @return 成功消息
+     */
+    public static ResVo success(String msg, Object data)
+    {
+        return new ResVo(HttpStatus.SUCCESS, msg, data);
+    }
+
+    /**
+     * 返回警告消息
+     *
+     * @param msg 返回内容
+     * @return 警告消息
+     */
+    public static ResVo warn(String msg)
+    {
+        return ResVo.warn(msg, null);
+    }
+
+    /**
+     * 返回警告消息
+     *
+     * @param msg 返回内容
+     * @param data 数据对象
+     * @return 警告消息
+     */
+    public static ResVo warn(String msg, Object data)
+    {
+        return new ResVo(HttpStatus.WARN, msg, data);
+    }
+
+    /**
+     * 返回错误消息
+     *
+     * @return 错误消息
+     */
+    public static ResVo error()
+    {
+        return ResVo.error("操作失败");
+    }
+
+    /**
+     * 返回错误消息
+     *
+     * @param msg 返回内容
+     * @return 错误消息
+     */
+    public static ResVo error(String msg)
+    {
+        return ResVo.error(msg, null);
+    }
+
+    /**
+     * 返回错误消息
+     *
+     * @param msg 返回内容
+     * @param data 数据对象
+     * @return 错误消息
+     */
+    public static ResVo error(String msg, Object data)
+    {
+        return new ResVo(HttpStatus.ERROR, msg, data);
+    }
+
+    /**
+     * 返回错误消息
+     *
+     * @param code 状态码
+     * @param msg 返回内容
+     * @return 错误消息
+     */
+    public static ResVo error(int code, String msg)
+    {
+        return new ResVo(code, msg, null);
+    }
+
+    /**
+     * 方便链式调用
+     *
+     * @param key 键
+     * @param value 值
+     * @return 数据对象
+     */
+    @Override
+    public ResVo put(String key, Object value)
+    {
+        super.put(key, value);
+        return this;
+    }
+}

springDemo/src/main/java/cn/whaifree/springdemo/utils/constants/HttpStatus.java

@@ -0,0 +1,95 @@
+package cn.whaifree.springdemo.utils.constants;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/10/11 16:32
+ * @注释
+ */
+public class HttpStatus
+{
+    /**
+     * 操作成功
+     */
+    public static final int SUCCESS = 0;
+
+    /**
+     * 对象创建成功
+     */
+    public static final int CREATED = 201;
+
+    /**
+     * 请求已经被接受
+     */
+    public static final int ACCEPTED = 202;
+
+    /**
+     * 操作已经执行成功，但是没有返回数据
+     */
+    public static final int NO_CONTENT = 204;
+
+    /**
+     * 资源已被移除
+     */
+    public static final int MOVED_PERM = 301;
+
+    /**
+     * 重定向
+     */
+    public static final int SEE_OTHER = 303;
+
+    /**
+     * 资源没有被修改
+     */
+    public static final int NOT_MODIFIED = 304;
+
+    /**
+     * 参数列表错误（缺少，格式不匹配）
+     */
+    public static final int BAD_REQUEST = 400;
+
+    /**
+     * 未授权
+     */
+    public static final int UNAUTHORIZED = 401;
+
+    /**
+     * 访问受限，授权过期
+     */
+    public static final int FORBIDDEN = 403;
+
+    /**
+     * 资源，服务未找到
+     */
+    public static final int FOUND = 40004;
+
+    /**
+     * 不允许的http方法
+     */
+    public static final int BAD_METHOD = 405;
+
+    /**
+     * 资源冲突，或者资源被锁
+     */
+    public static final int CONFLICT = 409;
+
+    /**
+     * 不支持的数据，媒体类型
+     */
+    public static final int UNSUPPORTED_TYPE = 415;
+
+    /**
+     * 系统内部错误
+     */
+    public static final int ERROR = 500;
+
+    /**
+     * 接口未实现
+     */
+    public static final int NOT_IMPLEMENTED = 501;
+
+    /**
+     * 系统警告消息
+     */
+    public static final int WARN = 601;
+}

springDemo/src/main/resources/application.yaml

@@ -1,3 +1,4 @@
+
 spring:
   datasource:
     url: jdbc:mysql://localhost:3306/springTest?useUnicode=true&characterEncoding=utf-8&useSSL=false&serverTimezone=Asia/Shanghai
@@ -11,3 +12,24 @@ spring:
       port: 6379
       # 选择db1
       database: 3
+
+
+# springdoc-openapi项目配置
+springdoc:
+  swagger-ui:
+    path: /swagger-ui.html
+    tags-sorter: alpha
+    operations-sorter: alpha
+  api-docs:
+    path: /v3/api-docs
+  group-configs:
+    - group: 'default'
+      paths-to-match: '/**'
+      packages-to-scan: cn.whaifree.springdemo.controller
+# knife4j的增强配置，不需要增强可以不配
+knife4j:
+  enable: true
+  setting:
+    language: zh_cn
+server:
+  port: 8080