chen

spring-boot-aop/src/main/java/com/imooc/springbootaop/ResultAspect.java

+package com.imooc.springbootaop;
+
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.annotation.Pointcut;
+import org.springframework.stereotype.Component;
+
+/**
+ * 返回值切面
+ */
+@Component
+@Aspect
+public class ResultAspect {
+	// 切入点表达式，表示切入点为返回类型ResultBo的所有方法
+	@Pointcut("execution(public com.imooc.springbootaop.ResultBo *(..))")
+	public void ResultAspect() {
+	}
+
+	// 环绕通知
+	@Around("ResultAspect()")
+	public Object deAround(ProceedingJoinPoint joinPoint) throws Throwable {
+		try {
+			return joinPoint.proceed();// 返回正常结果
+		} catch (Exception ex) {
+			return new ResultBo<>(ex);// 被切入的方法执行异常时，返回ResultBo
+		}
+	}
+}

spring-boot-aop/src/main/java/com/imooc/springbootaop/ResultBo.java

 package com.imooc.springbootaop;
 
 public class ResultBo<T> {
+	public int getCode() {
+		return code;
+	}
+	public void setCode(int code) {
+		this.code = code;
+	}
+	public String getMsg() {
+		return msg;
+	}
+	public void setMsg(String msg) {
+		this.msg = msg;
+	}
+	public T getData() {
+		return data;
+	}
+	public void setData(T data) {
+		this.data = data;
+	}
 	/**
 	 * 错误码 0表示没有错误(异常) 其他数字代表具体错误码
 	 */