Merge branch 'gitee'

- 更新 ServiceA 和 ServiceB 的 application.yaml 文件，调整 Nacos 配置
- 在 ServiceB 中添加基于 Nacos 配置的动态限流功能
- 更新 DynamicThreadPoolController 中的线程池初始化逻辑
- 移除 SpringDemo 中的 MyBatis相关配置
- 更新项目依赖版本：
  - Spring Cloud 版本：2023.0.3
  - Lombok版本：1.18.30
  - MyBatis-Plus 版本：3.5.9
  - MyBatis-Plus3 版本：3.5.9
  - Spring Boot 版本：3.1.5
  - Java版本：17
  - Maven 版本：3.8.6

ForJdk17/src/main/java/cn/whaifree/leetCode/LeetCode283.java

@@ -0,0 +1,71 @@
+package cn.whaifree.leetCode;
+
+import org.junit.Test;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/11/1 14:24
+ * @注释
+ */
+public class LeetCode283 {
+
+    @Test
+    public void test() {
+        int[] nums = {0, 4, 0, 3, 12, 0};
+        new Solution().moveZeroes(nums);
+        for (int num : nums) {
+            System.out.print(num + " ");
+        }
+    }
+
+    class Solution {
+        public void moveZeroes(int[] nums) {
+
+
+            for (int i = 1; i < nums.length; i++) {
+                // 插入排序
+                for (int j = i; j > 0; j--) {
+                    if (nums[j - 1] == 0) {
+                        swap(nums, j, j - 1);
+                    } else if (nums[j] != 0 && nums[j - 1] == 0) { // 遇到非0就往前插入
+                        swap(nums, j, j - 1);
+                    } else {
+                        break;
+                    }
+                }
+            }
+        }
+
+        public void swap(int[] nums, int i, int j) {
+            int temp = nums[i];
+            nums[i] = nums[j];
+            nums[j] = temp;
+        }
+
+    }
+
+    @Test
+    public void test1() {
+        int[] nums = {0, 4, 0, 3, 12, 0};
+        new Solution1().moveZeroes(nums);
+        for (int num : nums) {
+            System.out.print(num + " ");
+        }
+    }
+
+    class Solution1 {
+        public void moveZeroes(int[] nums) {
+            int left = 0;
+            for (int i = 0; i < nums.length; i++) {
+                if (nums[i] != 0) {
+                    nums[left] = nums[i];
+                    left++;
+                }
+            }
+            for (int i = left; i < nums.length; i++) {
+                nums[i] = 0;
+            }
+        }
+    }
+}

ForJdk17/src/main/java/cn/whaifree/leetCode/LeetCode560.java

@@ -0,0 +1,96 @@
+package cn.whaifree.leetCode;
+
+import org.junit.Test;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/11/1 15:17
+ * @注释
+ */
+public class LeetCode560 {
+
+    @Test
+    public void test() {
+        int[] nums = {-1, -1, 1};
+        int k = 0;
+
+        int res = new Solution().subarraySum(nums, k);
+        System.out.println(res);
+    }
+
+    class Solution {
+        /**
+         * -2 -5 1 2
+         *
+         * -2 -7 -6 -4
+         * 子数组(连续)的个数 。
+         *
+         * 前缀和，前缀和的区间总面积为k的个数
+         *
+         * @param nums
+         * @param k
+         * @return
+         */
+        public int subarraySum(int[] nums, int k) {
+            int len = nums.length;
+
+            int[] preSum = new int[len + 1];
+            for (int i = 0; i < len; i++) {
+                preSum[i + 1] = preSum[i] + nums[i];
+            }
+
+
+            int count = 0;
+            for (int left = 0; left < len; left++) {
+                for (int right = left; right < len; right++) {
+                    // 区间和 [left..right]，注意下标偏移
+                    if (preSum[right + 1] - preSum[left] == k) {
+                        count++;
+                    }
+                }
+            }
+            return count;
+
+        }
+
+        /**
+         * 子数组(连续)的个数 。
+         *
+         * 前缀和，前缀和的区间总面积为k的个数
+         *
+         *
+         * 1. 每次计算的元素n，在前面计算好前缀和，只要找到k-n的前缀和的个数
+         * --- 计算每个前缀和的数量，
+         *
+         *
+         * @param nums
+         * @param k
+         * @return
+         */
+        public int subarraySum1(int[] nums, int k) {
+            Map<Integer, Integer> map = new HashMap<>();
+            map.put(0, 1);
+            // map为各种前缀和的数量
+            int preSum = 0;
+            int res = 0;
+            for (int num : nums) {
+                preSum += num;
+                // 画图，就是一个大的面积，找到小的面积，取其中的差值区域；即找到一个范围==k
+                // | preSum-k  | k  |
+                // 整个是preSum
+                // PreSum当前的前缀和-某个之前的前缀和=k，而map存储之前前缀和k的个数为v个
+                if (map.containsKey(preSum - k)) {
+                    res += map.get(preSum - k);
+                }
+                map.put(preSum, map.getOrDefault(preSum, 0) + 1);
+            }
+
+            return res;
+
+        }
+    }
+}

ForJdk17/src/main/java/cn/whaifree/redo/redo_all_241016/LeetCode1005.java

@@ -0,0 +1,45 @@
+package cn.whaifree.redo.redo_all_241016;
+
+import org.junit.Test;
+
+import java.util.Arrays;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/11/1 14:08
+ * @注释
+ */
+public class LeetCode1005 {
+
+    @Test
+    public void test() {
+        int[] nums = {4,-5,4,-5,9,4,5};
+        int k = 1;
+        int result = new Solution().largestSumAfterKNegations(nums, k);
+        System.out.println(result);
+    }
+
+    class Solution {
+        public int largestSumAfterKNegations(int[] nums, int k) {
+            Arrays.sort(nums);
+
+            int res = 0;
+            int minAbs = Integer.MAX_VALUE;
+            for (int i = 0; i < nums.length; i++) {
+                if (nums[i] < 0 && k > 0) {
+                    nums[i] = -nums[i];
+                    k--;
+                }
+                minAbs = Math.min(minAbs, nums[i]);
+                res += nums[i];
+            }
+            if (k % 2 == 0) {
+                // 偶数
+                return res;
+            }else {
+                return res - minAbs * 2;
+            }
+        }
+    }
+}

ForJdk17/src/main/java/cn/whaifree/redo/redo_all_241016/LeetCode123.java

@@ -0,0 +1,48 @@
+package cn.whaifree.redo.redo_all_241016;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/10/31 12:03
+ * @注释
+ */
+public class LeetCode123 {
+
+    class Solution {
+        /**
+         *
+         * dp[1] 表示手里没有第一支股票的最大利润
+         *      - 前一天就没 dp[i-1][1]
+         *      - 前一天有第一支，今天刚刚卖了 dp[i-1][2] + prices[i]
+         * dp[2] 表示手里有第一支股票的最大利润
+         *      - 前一天就有 dp[i-1][2]
+         *      - 前一天没有，刚刚买入第一支 dp[i-1][1] - prices[i]
+         *
+         * dp[3] 表示手里没有第二支股票的最大利润
+         *
+         * dp[4] 表示手里有第二支股票的最大利润
+         *
+         * @param prices
+         * @return
+         */
+        public int maxProfit(int[] prices) {
+
+            int[][] dp = new int[prices.length][5];
+            dp[0][1] = 0;
+            dp[0][2] = -prices[0];
+            dp[0][3] = 0;
+            dp[0][4] = -prices[0];
+
+            for (int i = 1; i < prices.length; i++) {
+                dp[i][2] = Math.max(dp[i - 1][2], dp[i - 1][0] - prices[i]);
+                dp[i][1] = Math.max(dp[i - 1][1], dp[i - 1][2] + prices[i]);
+                // 手里有第二支股票的最大利润 前一天就有第二支，【前一天没有第二支，也没有第一支但今天买入】
+                dp[i][4] = Math.max(dp[i - 1][4], dp[i - 1][1] - prices[i]);
+                // 手里没有第二支股票的最大利润 前一天就没有第二支，前一天有第二支但今天卖出
+                dp[i][3] = Math.max(dp[i - 1][3], dp[i - 1][4] + prices[i]);
+            }
+            return dp[prices.length - 1][3];
+        }
+    }
+
+}

ForJdk17/src/main/java/cn/whaifree/redo/redo_all_241016/LeetCode289.java

@@ -0,0 +1,87 @@
+package cn.whaifree.redo.redo_all_241016;
+
+import org.junit.Test;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/10/31 11:28
+ * @注释
+ */
+public class LeetCode289 {
+
+    @Test
+    public void test() {
+        int[][] board = new int[][]{{0,1,0},{0,0,1},{1,1,1},{0,0,0}};
+        new Solution().gameOfLife(board);
+        for (int i = 0; i < board.length; i++) {
+            for (int j = 0; j < board[0].length; j++) {
+                System.out.print(board[i][j] + " ");
+            }
+        }
+    }
+
+    class Solution {
+        /**
+         * 如果活细胞周围八个位置的活细胞数少于两个，则该位置活细胞死亡；1 2
+         * 如果活细胞周围八个位置有两个或三个活细胞，则该位置活细胞仍然存活； 1 1
+         * 如果活细胞周围八个位置有超过三个活细胞，则该位置活细胞死亡；1 2
+         * 如果死细胞周围正好有三个活细胞，则该位置死细胞复活；0 3
+         *
+         * 2 之前是活着，现在死了
+         * 3 之前是死的，现在活了
+         *
+         * 最后遍历吧3变成1，把2变成0
+         *
+         * @param board
+         */
+        public void gameOfLife(int[][] board) {
+            for (int i = 0; i < board.length; i++) {
+                for (int j = 0; j < board[0].length; j++) {
+                    int count = aliveCount(board, i, j);
+                    if (board[i][j] == 1) { // 之前是活着的
+                        if (count < 2) {
+                            board[i][j] = 2;
+                        }else if (count > 3) {
+                            board[i][j] = 2;
+                        }
+                    }else {
+                        if (count == 3) {
+                            board[i][j] = 3;
+                        }
+                    }
+
+                }
+            }
+
+            for (int i = 0; i < board.length; i++) {
+                for (int j = 0; j < board[0].length; j++) {
+                    if (board[i][j] == 3) {
+                        board[i][j] = 1;
+                    } else if (board[i][j] == 2) {
+                        board[i][j] = 0;
+                    }
+                }
+            }
+        }
+
+
+        public int aliveCount(int[][] board, int i, int j) {
+            int res = 0;
+            for (int ti = i - 1; ti < i + 2; ti++) {
+                for (int tj = j - 1; tj < j + 2; tj++) {
+                    if (ti == i && tj == j) {
+                        continue;
+                    }
+                    if (ti >= 0 && ti < board.length && tj >= 0 && tj < board[0].length) {
+                        if (board[ti][tj] == 1 || board[ti][tj] == 2) {
+                            res++;
+                        }
+                    }
+                }
+            }
+            return res;
+        }
+    }
+
+}

ForJdk17/src/main/java/cn/whaifree/redo/redo_all_241016/LeetCode468.java

@@ -0,0 +1,10 @@
+package cn.whaifree.redo.redo_all_241016;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/10/31 12:56
+ * @注释
+ */
+public class LeetCode468 {
+}

ForJdk17/src/main/java/cn/whaifree/redo/redo_all_241016/LeetCode49.java

@@ -0,0 +1,58 @@
+package cn.whaifree.redo.redo_all_241016;
+
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/11/1 13:55
+ * @注释
+ */
+public class LeetCode49 {
+
+    @Test
+    public void test() {
+        String[] strs = {"abbbbbbbbbbb","aaaaaaaaaaab"};
+        List<List<String>> result = new Solution().groupAnagrams(strs);
+        for (List<String> list : result) {
+            System.out.println(list);
+        }
+    }
+
+    class Solution {
+        public List<List<String>> groupAnagrams(String[] strs) {
+
+            Map<String, List<String>> map = new HashMap<>();
+            for (int i = 0; i < strs.length; i++) {
+
+                int[] counts = new int[26];
+                String item = strs[i];
+                for (int j = 0; j < item.length(); j++) {
+                    counts[item.charAt(j) - 'a']++;
+                }
+
+                StringBuilder str = new StringBuilder();
+                for (int j = 0; j < counts.length; j++) {
+                    if (counts[j] != 0) {
+                        str.append((char) ('a' + j)).append(counts[j]);
+                    }
+                }
+                if (!map.containsKey(str.toString())) {
+                    map.put(str.toString(), new ArrayList<>());
+                }
+                map.get(str.toString()).add(strs[i]);
+            }
+
+            List<List<String>> result = new ArrayList<>();
+            for (Map.Entry<String, List<String>> entry : map.entrySet()) {
+                result.add(entry.getValue());
+            }
+            return result;
+        }
+    }
+}

SpringCloud/ServiceA/src/main/java/com/whai/springcloud/servicea/controller/DynamicThreadPoolController.java

@@ -33,7 +33,6 @@ public class DynamicThreadPoolController {
     @PostConstruct
     public void init() {
 
-
         executor = new ThreadPoolExecutor(
                 Runtime.getRuntime().availableProcessors(), Runtime.getRuntime().availableProcessors() * 4, 10, TimeUnit.SECONDS,
                 new ArrayBlockingQueue<>(100),
@@ -68,6 +67,7 @@ class DynamicThreadPoolConfig implements ApplicationListener<EnvironmentChangeEv
 
     @Override
     public void onApplicationEvent(EnvironmentChangeEvent event) {
+        System.out.println("DynamicThreadPoolConfig.onApplicationEvent");
         if (event.getKeys().contains("dynamic.coreSize")) {
             // 获取值
             Integer coreSize = threadConfigProperties.getCoreSize();

SpringCloud/ServiceA/src/main/resources/application.yaml

@@ -15,7 +15,7 @@ spring:
         # 配置所属命名空间的id，我们配置名称为dev的id，在命名空间列表查看id的值
         namespace: 97ff159f-6177-4aab-b735-bd75458949d4
         # 文件名，如果没有配置则默认为 ${spring.application.name}
-        prefix: springboot3-nacos
+#        prefix: springboot3-nacos
         # 配置所属分组
         group: DEFAULT_GROUP
         # 后缀名，只支持 properties 和 yaml 类型
@@ -24,12 +24,9 @@ spring:
         server-addr: localhost:8848
         # 配置自动刷新
         refresh-enabled: true
-
-        # 启用远程同步配置
-        enable-remote-sync-config: true
   config:
     import:
-      - optional:nacos:${spring.application.name}.${spring.cloud.nacos.config.file-extension}
+      - optional:nacos:springboot3-nacos.${spring.cloud.nacos.config.file-extension}
 
 # Logger Config
 logging:

SpringCloud/ServiceB/src/main/java/com/whai/springcloud/serviceb/controller/BProviderController.java

@@ -1,11 +1,25 @@
 package com.whai.springcloud.serviceb.controller;
 
 import cn.hutool.core.util.StrUtil;
+import com.alibaba.cloud.nacos.NacosConfigManager;
+import com.alibaba.nacos.api.config.ConfigService;
+import com.alibaba.nacos.api.config.listener.Listener;
+import com.alibaba.nacos.api.exception.NacosException;
+import com.alibaba.nacos.shaded.com.google.common.util.concurrent.RateLimiter;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.cloud.context.config.annotation.RefreshScope;
 import org.springframework.core.env.Environment;
+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.ArrayList;
+import java.util.List;
+import java.util.concurrent.Executor;
+
 /**
  * @version 1.0
  * @Author whai文海
@@ -13,13 +27,44 @@ import org.springframework.web.bind.annotation.RestController;
  * @注释
  */
 @RestController
+@RefreshScope
 public class BProviderController {
 
     private final Environment environment;
 
+    private RateLimiter rateLimiter;
+
     @Autowired
-    public BProviderController(Environment environment) {
+    public BProviderController(Environment environment, @Qualifier("nacosConfigManager") NacosConfigManager nacosConfigManager) {
         this.environment = environment;
+        initRateLimiter();
+        ConfigService configService = nacosConfigManager.getConfigService();
+        try {
+            configService.addListener("cvm.reset.ratelimit", "DEFAULT_GROUP", new Listener() {
+                @Override
+                public Executor getExecutor() {
+                    return null;
+                }
+
+                @Override
+                public void receiveConfigInfo(String configInfo) {
+                    System.out.println("收到配置变更：cvm.reset.ratelimit" + configInfo);
+                    rateLimiter.setRate(Double.parseDouble(configInfo));
+                }
+            });
+        } catch (NacosException e) {
+            throw new RuntimeException(e);
+        }
+
+    }
+    @Value("${cvm.reset.ratelimit}")
+    private int rateLimitCount;
+    private void initRateLimiter() {
+        if (rateLimitCount <= 0) {
+            rateLimitCount = 1;
+        }
+        System.out.println("初始化限流器:" + rateLimitCount);
+        rateLimiter = RateLimiter.create(rateLimitCount);
     }
     // 提供服务
     @RequestMapping("/getB")
@@ -28,4 +73,20 @@ public class BProviderController {
     }
 
 
+
+    @PostMapping("/CVM/reset")
+    public String reset(@RequestBody List<String> InstanceIds) {
+        System.out.println("当前限流数：" + rateLimiter.getRate());
+        List<String> succ = new ArrayList<>();
+        for (String instanceId : InstanceIds) {
+            if (rateLimiter.tryAcquire()) {
+                // 处理重置请求
+                succ.add(instanceId);
+            }else {
+                return "请求过于频繁，请稍后重试";
+            }
+        }
+        return StrUtil.format("重置成功，成功实例：{}", succ);
+    }
+
 }

SpringCloud/ServiceB/src/main/resources/application.yaml

@@ -1,6 +1,5 @@
 
 spring:
-
   application:
     name: ServiceB
   cloud:
@@ -12,23 +11,21 @@ spring:
         group: DEFAULT_GROUP
         server-addr: localhost:8848
       config:
-        # ?????????id????????dev?id??????????id??
+        # 配置所属命名空间的id，我们配置名称为dev的id，在命名空间列表查看id的值
         namespace: 97ff159f-6177-4aab-b735-bd75458949d4
-        # ?????????????? ${spring.application.name}
+        # 文件名，如果没有配置则默认为 ${spring.application.name}
-        # prefix: springboot3-nacos
+        #        prefix: springboot3-nacos
-        # ??????
+        # 配置所属分组
         group: DEFAULT_GROUP
-        # ??????? properties ? yaml ??
+        # 后缀名，只支持 properties 和 yaml 类型
         file-extension: yaml
-        # nacos?????
+        # nacos服务器地址
         server-addr: localhost:8848
-        # ??????
+        # 配置自动刷新
         refresh-enabled: true
-        # ????????
-        enable-remote-sync-config: true
   config:
     import:
-      - optional:nacos:${spring.application.name}.${spring.cloud.nacos.config.file-extension}
+      - optional:nacos:springboot3-nacos.${spring.cloud.nacos.config.file-extension}
 
 # Logger Config
 logging:
@@ -37,4 +34,3 @@ logging:
 
 hexadecimal:
   name: whai
-# --server.port=12139

SpringCloud/pom.xml

@@ -31,6 +31,13 @@
         <spring-cloud.version>2023.0.3</spring-cloud.version>
     </properties>
     <dependencies>
+        <!-- Lombok -->
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.30</version>
+            <scope>provided</scope>
+        </dependency>
         <!--hutool-->
         <dependency>
             <groupId>cn.hutool</groupId>

SpringDemo/pom.xml

@@ -38,14 +38,8 @@
         <!-- https://mvnrepository.com/artifact/com.baomidou/mybatis-plus-boot-starter -->
         <dependency>
             <groupId>com.baomidou</groupId>
-            <artifactId>mybatis-plus-boot-starter</artifactId>
+            <artifactId>mybatis-plus-spring-boot3-starter</artifactId>
-            <version>3.5.1</version>
+            <version>3.5.9</version>
-        </dependency>
-        <!--mybatis-->
-        <dependency>
-            <groupId>org.mybatis.spring.boot</groupId>
-            <artifactId>mybatis-spring-boot-starter</artifactId>
-            <version>3.0.2</version>
         </dependency>
         <dependency>
             <groupId>com.github.xiaoymin</groupId>

SpringDemo/src/main/java/cn/whaifree/springdemo/config/MybatisConfig.java

@@ -0,0 +1,16 @@
+package cn.whaifree.springdemo.config;
+
+import org.mybatis.spring.annotation.MapperScan;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/11/1 12:41
+ * @注释
+ */
+@Configuration
+@MapperScan("cn.whaifree.springdemo.mybatis.mapper")
+public class MybatisConfig {
+
+}

SpringDemo/src/main/java/cn/whaifree/springdemo/tech/CircleRelation.java

@@ -0,0 +1,138 @@
+//package cn.whaifree.springdemo.tech;
+//
+//import jakarta.annotation.Resource;
+//import org.springframework.beans.factory.annotation.Autowired;
+//import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+//import org.springframework.context.annotation.Lazy;
+//import org.springframework.context.annotation.Scope;
+//import org.springframework.stereotype.Component;
+//
+///**
+// * @version 1.0
+// * @Author whai文海
+// * @Date 2024/10/31 13:57
+// * @注释
+// */
+//public class CircleRelation {
+//
+//
+//}
+//
+//
+//// ================================================================
+//
+//@Component
+////@Scope("prototype")
+//class A1{
+////    @Resource
+////    public B1 b1;
+//
+//    public static void main(String[] args) {
+//        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext("cn.whaifree.springdemo.tech");
+////        A1 bean = context.getBean(A1.class);
+////        System.out.println(bean.b1.a1);
+//
+////        LazyA1 lazyA1 = context.getBean(LazyA1.class);
+////        System.out.println(lazyA1.b1);
+//    }
+//}
+//
+///**
+// * BeanCurrentlyInCreationException:
+// * Error creating bean with name 'a1':
+// * Requested bean is currently in creation: Is there an unresolvable circular reference?
+// *
+// * A 实例创建后，populateBean 时，会触发 B 的加载。
+// * B 实例创建后，populateBean 时，会触发 A 的加载。由于 A 的 scope=prototype，需要的时候都会创建一个全新的 A。
+// * 这样，就会进入一个死循环。Spring 肯定是解决不了这种情况下的循环依赖的。所以，提前进行了 check，并抛出了异常。
+// *
+// * A需要一个新的B，B需要一个新的A，不能用为初始化的A活着B
+// */
+//@Component
+////@Scope("prototype")
+//class B1{
+//    @Resource
+//    public A1 a1;
+//}
+//
+//
+//@Component
+//@Scope("prototype")
+//class LazyA1{
+//
+//    @Autowired
+//    @Lazy
+//    public LazyB1 b1;
+//}
+///**
+// *
+// */
+//@Component
+//@Scope("prototype")
+//class LazyB1{
+//    @Autowired
+//    public LazyA1 a1;
+//}
+//// ================================================================
+//
+//
+//@Component
+//class ConstructA {
+//    ConstructB b;
+//    public ConstructA(@Lazy ConstructB b) {
+//        this.b = b;
+//    }
+//}
+//@Component
+//class ConstructB {
+//    ConstructA a;
+//    public ConstructB(ConstructA a) {
+//        this.a = a;
+//    }
+//    public static void main(String[] args) {
+//        /**
+//         * A 实例在创建时(createBeanInstance)，由于是构造注入，这时会触发 B 的加载。
+//         * B 实例在创建时(createBeanInstance)，又会触发 A 的加载，此时，A 还没有添加到三级缓存（工厂）中，所以就会创建一个全新的 A。
+//         * 这样，就会进入一个死循环。Spring 是解决不了这种情况下的循环依赖的。所以，提前进行了 check，并抛出了异常。
+//         *
+//         * 解决：@Lazy放在构造器上，这样，A 实例在创建时，不会触发 B 的加载。
+//         *
+//         * 构造函数注入要求在创建bean实例时必须提供所有依赖
+//         *
+//         */
+//        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext("cn.whaifree.springdemo.tech");
+//        ConstructA bean = context.getBean(ConstructA.class);
+//        System.out.println(bean.b);
+//        // Unsatisfied dependency expressed through constructor parameter 0:
+//        // Error creating bean with name 'constructA': Requested bean is currently in creation: Is there an unresolvable circular reference?
+//    }
+//}
+//
+//
+//
+//@Component
+//class SetA {
+//    SetB b;
+//
+//    @Autowired
+//    public void setB(SetB b) {
+//        this.b = b;
+//    }
+//}
+//@Component
+//class SetB {
+//
+//    SetA a;
+//
+//    @Autowired
+//    public void setA(SetA a) {
+//        this.a = a;
+//    }
+//
+//    public static void main(String[] args) {
+//
+//        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext("cn.whaifree.springdemo.tech");
+//        SetA bean = context.getBean(SetA.class);
+//        System.out.println(bean.b);
+//    }
+//}

SpringDemo/src/main/resources/application.yaml

@@ -40,8 +40,6 @@ spring:
       direct:
         acknowledge-mode: manual
 
-mybatis:
-  mapper-locations: '"classpath:/mapper/**.xml"'
 mybatis-plus:
   configuration:
     log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
@@ -49,6 +47,7 @@ mybatis-plus:
     db-config:
       logic-delete-field: 1
       logic-not-delete-value: 0
+  mapper-locations: "classpath:/mapper/**.xml"
 
 
 

SpringDemo/src/test/java/cn/whaifree/springdemo/MybatisTest/MybatisTest.java

@@ -0,0 +1,34 @@
+package cn.whaifree.springdemo.MybatisTest;
+
+import cn.whaifree.springdemo.mybatis.domain.Orders;
+import cn.whaifree.springdemo.mybatis.mapper.OrdersMapper;
+import cn.whaifree.springdemo.mybatis.service.OrdersService;
+import jakarta.annotation.Resource;
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+import java.util.List;
+
+/**
+ * @version 1.0
+ * @Author whai文海
+ * @Date 2024/11/1 12:43
+ * @注释
+ */
+@SpringBootTest
+public class MybatisTest {
+
+    @Resource
+    private OrdersService ordersService;
+
+    @Resource
+    private OrdersMapper ordersMapper;
+    @Test
+    public void test() {
+
+        List<Orders> orders = ordersMapper.selectList(null);
+        System.out.println(orders);
+        List<Orders> orders1 = ordersMapper.selectByExample();
+        System.out.println(orders1);
+    }
+}

pom.xml

@@ -7,7 +7,7 @@
 	<groupId>org.example</groupId> <!--groupId表示当前 Maven 项目隶属的组织或公司-->
 	<artifactId>LeetCode</artifactId> <!--当前 Maven 项目的名称-->
 	<version>1.0-SNAPSHOT</version><!--定义了 Maven 项目当前所处版本-->
-	<packaging>pom</packaging>
+	<packaging>jar</packaging>
     <modules>
         <module>ForJdk8</module>
 		<module>ForJdk17</module>