Phase 1 #17: Spring Cloud Alibaba 微服务框架搭建

- Maven 父工程 wm-parent (Spring Boot 3.3.5 + Cloud 2023.0.3 + Alibaba 2023.0.1)
- 12个子模块: wm-common/gateway/base/iot/data-engine/bpm/production/revenue/patrol/bi/notify/job
- wm-common: 统一响应 R<T> + 全局异常处理 + BusinessException
- wm-gateway: Spring Cloud Gateway 路由配置（7个微服务路由）
- 集成: Nacos(注册/配置) + PostgreSQL + Redis + Kafka + Sa-Token + MyBatis-Plus + Knife4j
- docker-compose.yml: 一键启动10个中间件(PG+PostGIS/TDengine/Redis/Kafka/EMQX/Nacos/ES/Kibana/MinIO/GeoServer)

wm-common/src/main/java/com/water/common/core/exception/BusinessException.java

@@ -0,0 +1,10 @@
+package com.water.common.core.exception;
+
+import lombok.Getter;
+
+@Getter
+public class BusinessException extends RuntimeException {
+    private final int code;
+    public BusinessException(int code, String message) { super(message); this.code = code; }
+    public BusinessException(String message) { this(400, message); }
+}

wm-common/src/main/java/com/water/common/core/exception/GlobalExceptionHandler.java

@@ -0,0 +1,24 @@
+package com.water.common.core.exception;
+
+import com.water.common.core.result.R;
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+@Slf4j
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(BusinessException.class)
+    public R<Void> handleBusiness(BusinessException e, HttpServletRequest request) {
+        log.warn("Business exception: {} - {}", e.getCode(), e.getMessage());
+        return R.fail(e.getCode(), e.getMessage());
+    }
+
+    @ExceptionHandler(Exception.class)
+    public R<Void> handleException(Exception e, HttpServletRequest request) {
+        log.error("System exception: {}", e.getMessage(), e);
+        return R.fail(500, "系统内部错误");
+    }
+}

wm-common/src/main/java/com/water/common/core/result/R.java

@@ -0,0 +1,36 @@
+package com.water.common.core.result;
+
+import lombok.Data;
+import java.io.Serializable;
+
+@Data
+public class R<T> implements Serializable {
+
+    private int code;
+    private String message;
+    private T data;
+    private long timestamp = System.currentTimeMillis();
+
+    public static <T> R<T> ok() {
+        return ok(null);
+    }
+
+    public static <T> R<T> ok(T data) {
+        R<T> r = new R<>();
+        r.code = 200;
+        r.message = "success";
+        r.data = data;
+        return r;
+    }
+
+    public static <T> R<T> fail(int code, String message) {
+        R<T> r = new R<>();
+        r.code = code;
+        r.message = message;
+        return r;
+    }
+
+    public static <T> R<T> fail(String message) {
+        return fail(500, message);
+    }
+}