1 package com.isoftstone.iics.bizsupport.epartner.fh.HandlerInteceptor; 2 3 import javax.servlet.http.HttpServletRequest; 4 import javax.servlet.http.HttpServletResponse; 5 6 import org.springframework.core.NamedThreadLocal; 7 import org.springframework.web.servlet.HandlerInterceptor; 8 import org.springframework.web.servlet.ModelAndView; 9 import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; 10 11 /** 12 * preHandle：预处理回调方法，实现处理器的预处理（如登录检查），第三个参数为响应的处理器； 13 返回值：true表示继续流程（如调用下一个拦截器或处理器）； 14 false表示流程中断（如登录检查失败），不会继续调用其他的拦截器或处理器，此时我们需要通过response来产生响应； 15 postHandle：后处理回调方法，实现处理器的后处理（但在渲染视图之前），此时我们可以通过modelAndView（模型和视图对象）对模型数据进行处理或对视图进行处理，modelAndView也可能为null。 16 afterCompletion：整个请求处理完毕回调方法，即在视图渲染完毕时回调，如性能监控中我们可以在此记录结束时间并输出消耗时间，还可以进行一些资源清理，类似于try-catch-finally中的finally，但仅调用处理器执行链中preHandle返回true的拦截器的afterCompletion。 17 18 * <P>Description: --拦截器处理器测试拦截器</P> 19 * @ClassName: HandlerInteceptorTest 20 * @author 冯浩 2017年4月10日 上午11:12:01 21 * @see TODO 22 */ 23 //或继承HandlerInterceptorAdater 24 public class HandlerInteceptorTest implements HandlerInterceptor { 25 26 public NamedThreadLocal<Long> local=new NamedThreadLocal<Long>("stopWatch-startTime");//为每个线程绑定的本地线程 27 28 29 public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) 30 throws Exception { 31 long end=System.currentTimeMillis(); 32 Long start = local.get(); 33 System.out.println(" process is "+(end-start)+" mills"); 34 } 35 36 /** 37 * 后处理回调 38 */ 39 40 public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, 41 ModelAndView modelAndView) throws Exception { 42 System.out.println(" this is postHandle!!!"); 43 44 } 45 46 /** 47 * 预处理回调 48 */ 49 50 public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { 51 long start=System.currentTimeMillis(); 52 local.set(start); 53 System.out.println(" this is preHandle"); 54 return true; 55 } 56 57 58 59 } 60 61 62 63 /** 64 * 65 * <P>Description: TODO只需要实现自己需要的即可</P> 66 * @ClassName: HandlerInteceptor2 67 * @author 冯浩 2017年4月14日 下午1:26:06 68 * @see TODO 69 */ 70 71 class HandlerInteceptor2 extends HandlerInterceptorAdapter { 72 73 public NamedThreadLocal<Long> local=new NamedThreadLocal<Long>("stopWatch-startTime");//为每个线程绑定的本地线程 74 75 76 public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) 77 throws Exception { 78 long end=System.currentTimeMillis(); 79 Long start = local.get(); 80 System.out.println(" process is "+(end-start)+" mills"); 81 } 82 83 /** 84 * 后处理回调 85 */ 86 87 public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, 88 ModelAndView modelAndView) throws Exception { 89 System.out.println(" this is postHandle!!!"); 90 91 } 92 93 /** 94 * 预处理回调 95 */ 96 97 public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { 98 long start=System.currentTimeMillis(); 99 local.set(start); 100 System.out.println(" this is preHandle"); 101 return true; 102 } 103 104 105 106 }
配置文件
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" 4 xmlns:mvc="http://www.springframework.org/schema/mvc" 5 xsi:schemaLocation=" 6 http://www.springframework.org/schema/beans 7 http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 8 http://www.springframework.org/schema/aop 9 http://www.springframework.org/schema/aop/spring-aop-3.0.xsd 10 http://www.springframework.org/schema/context 11 http://www.springframework.org/schema/context/spring-context-3.0.xsd 12 http://www.springframework.org/schema/mvc 13 http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"> 14 15 <context:component-scan annotation-config="true" base-package="com.isoftstone.iics.bizsupport.epartner.fh.HandlerInteceptor"> 16 <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" /> 17 </context:component-scan> 18 19 <!-- <bean id="test" class="com.isoftstone.iics.bizsupport.epartner.fh.HandlerInteceptor.HandlerInteceptorTest"></bean> 20 不管用 21 <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"> 22 <property name="interceptors"> 23 <list> 24 <bean class="com.isoftstone.iics.bizsupport.epartner.fh.HandlerInteceptor.HandlerInteceptorTest"></bean> 25 </list> 26 </property> 27 28 </bean> 29 30 <bean name="/test" class="com.isoftstone.iics.bizsupport.epartner.fh.HandlerInteceptor.TestController"></bean> 31 --> 32 <mvc:interceptors> 33 <mvc:interceptor> 34 <mvc:mapping path="/test"/> 35 <bean class="com.isoftstone.iics.bizsupport.epartner.fh.HandlerInteceptor.HandlerInteceptorTest"></bean> 36 </mvc:interceptor> 37 </mvc:interceptors> 38 39 </beans>
Controller
1 package com.isoftstone.iics.bizsupport.epartner.fh.HandlerInteceptor; 2 3 import java.lang.annotation.Annotation; 4 5 import javax.servlet.http.HttpServletRequest; 6 import javax.servlet.http.HttpServletResponse; 7 8 9 10 11 12 13 14 import org.springframework.web.bind.annotation.RequestMapping; 15 import org.springframework.web.bind.annotation.RequestMethod; 16 import org.springframework.web.servlet.ModelAndView; 17 //@Controller 18 //public class TestController{ 19 // 20 // @RequestMapping(value="/test",method=RequestMethod.POST) 21 // @ResponseBody 22 // public void test(@RequestParam(value="message",defaultValue="default")String message){ 23 // System.out.println(message); 24 // System.out.println(" this is testController"); 25 // } 26 // 27 //} 28 import org.springframework.web.servlet.mvc.Controller; 29 public class TestController implements Controller{ 30 31 @RequestMapping(value="/test",method=RequestMethod.POST) 32 @Override 33 public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception { 34 System.out.println("this is testController-----"); 35 return new ModelAndView("test"); 36 } 37 38 }
测试
1 package com.isoftstone.iics.bizsupport.epartner.fh.HandlerInteceptor; 2 3 4 import java.io.IOException; 5 import java.io.InputStream; 6 import java.io.UnsupportedEncodingException; 7 import java.util.ArrayList; 8 import java.util.List; 9 10 import org.apache.commons.io.IOUtils; 11 import org.apache.http.HttpEntity; 12 import org.apache.http.NameValuePair; 13 import org.apache.http.client.ClientProtocolException; 14 import org.apache.http.client.HttpClient; 15 import org.apache.http.client.entity.UrlEncodedFormEntity; 16 import org.apache.http.client.methods.CloseableHttpResponse; 17 import org.apache.http.client.methods.HttpPost; 18 import org.apache.http.impl.client.CloseableHttpClient; 19 import org.apache.http.impl.client.DefaultHttpClient; 20 import org.apache.http.impl.client.HttpClients; 21 import org.apache.http.message.BasicNameValuePair; 22 import org.junit.Test; 23 import org.springframework.context.support.ClassPathXmlApplicationContext; 24 25 import org.apache.commons.io.*; 26 27 28 public class TestInteceptor { 29 30 31 32 @Test 33 public void test() throws UnsupportedEncodingException{ 34 CloseableHttpClient client = HttpClients.createDefault(); 35 String url="http://localhost:8082/com.isoftstone.iics.bizsupport.epartner/test"; 36 HttpPost post=new HttpPost(url); 37 List<NameValuePair> param=new ArrayList<NameValuePair>(); 38 param.add(new BasicNameValuePair("message","fenghao")); 39 UrlEncodedFormEntity entity=new UrlEncodedFormEntity(param,"utf-8"); 40 post.setEntity(entity); 41 try { 42 CloseableHttpResponse response = client.execute(post); 43 HttpEntity res = response.getEntity(); 44 InputStream content = res.getContent(); 45 System.out.println(IOUtils.toString(content)); 46 } catch (ClientProtocolException e) { 47 e.printStackTrace(); 48 } catch (IOException e) { 49 e.printStackTrace(); 50 } 51 52 53 } 54 55 }