完成10个工程的代码

springboot-aop/src/main/java/com/xncoding/aop/Application.java

@@ -0,0 +1,12 @@
+package com.xncoding.aop;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+}

springboot-aop/src/main/java/com/xncoding/aop/aspect/LogAspect.java

@@ -0,0 +1,67 @@
+package com.xncoding.aop.aspect;
+
+import org.aspectj.lang.JoinPoint;
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.*;
+import org.springframework.stereotype.Component;
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.context.request.ServletRequestAttributes;
+
+import javax.servlet.http.HttpServletRequest;
+import java.util.Arrays;
+
+/**
+ * 日志切面
+ */
+@Aspect
+@Component
+public class LogAspect {
+    @Pointcut("execution(public * com.xncoding.aop.controller.*.*(..))")
+    public void webLog(){}
+
+    @Before("webLog()")
+    public void deBefore(JoinPoint joinPoint) throws Throwable {
+        // 接收到请求，记录请求内容
+        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
+        HttpServletRequest request = attributes.getRequest();
+        // 记录下请求内容
+        System.out.println("URL : " + request.getRequestURL().toString());
+        System.out.println("HTTP_METHOD : " + request.getMethod());
+        System.out.println("IP : " + request.getRemoteAddr());
+        System.out.println("CLASS_METHOD : " + joinPoint.getSignature().getDeclaringTypeName() + "." + joinPoint.getSignature().getName());
+        System.out.println("ARGS : " + Arrays.toString(joinPoint.getArgs()));
+
+    }
+
+    @AfterReturning(returning = "ret", pointcut = "webLog()")
+    public void doAfterReturning(Object ret) throws Throwable {
+        // 处理完请求，返回内容
+        System.out.println("方法的返回值 : " + ret);
+    }
+
+    //后置异常通知
+    @AfterThrowing("webLog()")
+    public void throwss(JoinPoint jp){
+        System.out.println("方法异常时执行.....");
+    }
+
+    //后置最终通知,final增强，不管是抛出异常或者正常退出都会执行
+    @After("webLog()")
+    public void after(JoinPoint jp){
+        System.out.println("方法最后执行.....");
+    }
+
+    //环绕通知,环绕增强，相当于MethodInterceptor
+    @Around("webLog()")
+    public Object arround(ProceedingJoinPoint pjp) {
+        System.out.println("方法环绕start.....");
+        try {
+            Object o =  pjp.proceed();
+            System.out.println("方法环绕proceed，结果是 :" + o);
+            return o;
+        } catch (Throwable e) {
+            e.printStackTrace();
+            return null;
+        }
+    }
+}

springboot-aop/src/main/java/com/xncoding/aop/aspect/UserAccess.java

@@ -0,0 +1,12 @@
+package com.xncoding.aop.aspect;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Target({ElementType.METHOD, ElementType.TYPE})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface UserAccess {
+    String desc() default "无信息";
+}

springboot-aop/src/main/java/com/xncoding/aop/aspect/UserAccessAspect.java

@@ -0,0 +1,33 @@
+package com.xncoding.aop.aspect;
+
+import org.aspectj.lang.JoinPoint;
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.*;
+import org.springframework.stereotype.Component;
+
+@Component
+@Aspect
+public class UserAccessAspect {
+
+    @Pointcut(value = "@annotation(com.xncoding.aop.aspect.UserAccess)")
+    public void access() {
+
+    }
+
+    @Before("access()")
+    public void deBefore(JoinPoint joinPoint) throws Throwable {
+        System.out.println("second before");
+    }
+
+    @Around("@annotation(userAccess)")
+    public Object around(ProceedingJoinPoint pjp, UserAccess userAccess) {
+        //获取注解里的值
+        System.out.println("second around:" + userAccess.desc());
+        try {
+            return pjp.proceed();
+        } catch (Throwable throwable) {
+            throwable.printStackTrace();
+            return null;
+        }
+    }
+}

springboot-aop/src/main/java/com/xncoding/aop/controller/UserController.java

@@ -0,0 +1,29 @@
+package com.xncoding.aop.controller;
+
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.xncoding.aop.aspect.UserAccess;
+
+/**
+ * Description:
+ */
+@RestController
+public class UserController {
+    @RequestMapping("/first")
+    public Object first() {
+        return "first controller";
+    }
+
+    @RequestMapping("/doError")
+    public Object error() {
+        return 1 / 0;
+    }
+
+	@RequestMapping("/second")
+    @UserAccess(desc = "second")
+    public Object second() {
+        return "second controller";
+    }
+
+}