攔截請求並記錄相應信息-springboot

方式：

一、FIlter過濾器

二、interceptor攔截器

三、Aspect切片

 

1、Filter過濾器形式

　　只能處理request中的數據  不能肯定請求要走的是哪一個controller信息

一、過濾器實現第一種方式

package com.nxz.filter; import org.springframework.stereotype.Component; import javax.servlet.*; import java.io.IOException; import java.util.Date; // Filter 是javax.servlet下的
@Component //讓自定義filter起做用，只須要讓springcontext管理起來便可
public class TimeFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { System.out.println("time filter init"); } @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { System.out.println("time filter start"); long time = new Date().getTime(); filterChain.doFilter(servletRequest, servletResponse); System.out.println("消耗時間：" + (new Date().getTime() - time)); System.out.println("time filter start"); } @Override public void destroy() { System.out.println("time filter destroy"); } }

當項目啓動的時候會在控制檯輸出：time filter init

當訪問localhost:8080/user/1時：進入攔截器

結束結束後：

time filter start 進入getinfo服務 消耗時間：367 time filter end

 

二、filter過濾器第二種方式

package com.nxz.filter; import org.springframework.boot.web.servlet.FilterRegistrationBean; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; @Configuration public class WebConfig { @Bean public FilterRegistrationBean timeFilter(){ FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean(); TimeFilter timeFilter = new TimeFilter(); filterRegistrationBean.setFilter(timeFilter); //指定什麼樣的請求回走timefilter過濾器
        filterRegistrationBean.addUrlPatterns("/*"); return filterRegistrationBean; } }

 

 

2、inteceptor攔截器

　　只能處理到類中的方法，可是不能記錄方法的參數是什麼

package com.nxz.inteceptor; import org.springframework.stereotype.Component; import org.springframework.web.method.HandlerMethod; import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAndView; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.util.Date; @Component public class TimeInteceptor implements HandlerInterceptor { //在controller調用以前調用
 @Override public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o) throws Exception { System.out.println("preHandler"); System.out.println(((HandlerMethod) o).getBean().getClass().getName());//輸出類名 System.out.println(((HandlerMethod) o).getMethod().getName());//輸出方法名 //爲了在prehandler方法和posthandler方法之間傳遞信息，能夠將數據放到request中
        httpServletRequest.setAttribute("startTime", new Date().getTime()); return false; } //在controller調用以後調用，若是controller中拋出異常，這個方法不會調用
 @Override public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception { System.out.println("postHandle"); Long start = (Long) httpServletRequest.getAttribute("startTime"); System.out.println("time interceptor 耗時：" + (new Date().getTime() - start)); } //不管controller是否拋出異常，都會調用
 @Override public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception { System.out.println("afterCompletion"); Long start = (Long) httpServletRequest.getAttribute("startTime"); System.out.println("time interceptor 耗時：" + (new Date().getTime() - start)); System.out.println("ex is :" + e); } }

interceptor實現攔截功能還須要配置webconfig

package com.nxz.config; import com.nxz.filter.TimeFilter; import com.nxz.inteceptor.TimeInteceptor; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.web.servlet.FilterRegistrationBean; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; @Configuration public class WebConfig extends WebMvcConfigurerAdapter { @Autowired private TimeInteceptor timeInteceptor; //自定義的interceptor 要起做用的話 須要繼承webmvcConfigurerAdater ，重寫addInterceptors
 @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(timeInteceptor); } }

訪問localhost:8080/user/1後，輸入日誌：

preHandler com.nxz.controller.UserController getInfo 進入getinfo服務 postHandle time interceptor 耗時：48 afterCompletion time interceptor 耗時：48 ex is :null

 

 3、切片Aspect（AOP）  -- 切入點（註解）、加強（方法）

　　須要導入aop依賴

package com.nxz.aspect; import org.aspectj.lang.ProceedingJoinPoint; import org.aspectj.lang.annotation.Around; import org.aspectj.lang.annotation.Aspect; import org.springframework.stereotype.Component; import java.util.Date; @Aspect @Component public class TimeAspect { //@Before @After @AfterThrowing @Around 基本的aop註解
 @Around("execution(* com.nxz.controller.UserController.*(..))") public Object handlerControllerMehtod(ProceedingJoinPoint joinPoint) throws Throwable { System.out.println("time aspect start"); Object[] args = joinPoint.getArgs(); for (Object arg : args) { System.out.println(arg); } Long time = new Date().getTime(); Object obj = joinPoint.proceed(); System.out.println("time aspect end,耗時：" + (new Date().getTime() - time)); return obj; } }

訪問地址後：

time aspect start 1 --》請求參數 進入getinfo服務 time aspect end,耗時：4

 

 幾種方式起做用的順序：

 

 

====

 Usercontroller：

@GetMapping("/{id:\\d+}") @JsonView(User.UserDetailView.class) public User getInfo(@PathVariable String id) { System.out.println("進入getinfo服務"); User user = new User(); user.setUsername("tom"); return user; }