springboot中使用aop

首先在pom文件中添加依赖

<dependency>

　　<groupId>org.springframework.boot</groupId>

　　<artifactId>spring-boot-starter-aop</artifactId> 

</dependency>

接着编写切面类

@Aspect//这个注解的作用是:将一个类定义为一个切面类@Component//这个注解的作用：把切面类加入到IOC容器中public class DemoAspect { 　　private static final Logger log = LoggerFactory.getLogger(DemoAspect .class); 　　/*@PointCut注解表示横切点，哪些方法需要被横切*/ 　　/*切点表达式*/ 　　@Pointcut("execution(public * com.simons.cn.springbootdemo.controller.*.*(..))") 　　public void demoAspect() { 　　} 　　/*@Before注解表示在具体的方法之前执行*/ 　　@Before("demoAspect()") 　　public void before(JoinPoint joinPoint) { 　　　　log.info("前置切面before……");　　　　ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes(); 　　　　HttpServletRequest request = requestAttributes.getRequest(); 　　　　String requestURI = request.getRequestURI(); 　　　　//String remoteAddr = request.getRemoteAddr(); //这个方法不一定能获取到用户的真实ip

　　　　String remoteAddr = getIpAddr();//自定义获取用户ip方法 　　　　String requestMethod = request.getMethod(); 　　　　String declaringTypeName = joinPoint.getSignature().getDeclaringTypeName(); 　　　　String methodName = joinPoint.getSignature().getName(); 　　　　Object[] args = joinPoint.getArgs(); 　　　　log.info("请求url=" + requestURI + ",客户端ip=" + remoteAddr + ",请求方式=" + requestMethod + ",请求的类名=" + declaringTypeName + ",方法名=" + methodName + ",入参=" + args); 　　} 　　/*@After注解表示在方法执行之后执行*/ 　　@After("demoAspect()") 　　public void after() { 　　　　log.info("后置切面after……"); 　　} 　　/*@AfterReturning注解用于获取方法的返回值*/ 　　@AfterReturning(pointcut = "demoAspect()", returning = "object") 　　　　public void getAfterReturn(Object object) {　　　　　　log.info("afterReturning={}", object.toString()); 　　　　}　　}

/** * 获取用户真实IP地址，不使用request.getRemoteAddr()的原因是有可能用户使用了代理软件方式避免真实IP地址, * 可是，如果通过了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP值 * * @return ip */ private String getIpAddr(HttpServletRequest request) { String ip = request.getHeader("x-forwarded-for"); System.out.println("x-forwarded-for ip: " + ip); if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip)) { // 多次反向代理后会有多个ip值，第一个ip才是真实ip if( ip.indexOf(",")!=-1 ){ ip = ip.split(",")[0]; } } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("Proxy-Client-IP"); System.out.println("Proxy-Client-IP ip: " + ip); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("WL-Proxy-Client-IP"); System.out.println("WL-Proxy-Client-IP ip: " + ip); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("HTTP_CLIENT_IP"); System.out.println("HTTP_CLIENT_IP ip: " + ip); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("HTTP_X_FORWARDED_FOR"); System.out.println("HTTP_X_FORWARDED_FOR ip: " + ip); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("X-Real-IP"); System.out.println("X-Real-IP ip: " + ip); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getRemoteAddr(); System.out.println("getRemoteAddr ip: " + ip); } System.out.println("获取客户端ip: " + ip); return ip; }关于为什么要这样写才能获取用户真实ip，参见https://www.cnblogs.com/xiaoxing/p/6565573.html

转载于:https://www.cnblogs.com/wkln/p/11137776.html

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