一 拦截器代码
package com.wiimedia.controller;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
public class CommonInterceptor implements HandlerInterceptor {
private List<String> excludedUrls;
public List<String> getExcludedUrls() {
return excludedUrls;
}
public void setExcludedUrls(List<String> excludedUrls) {
this.excludedUrls = excludedUrls;
}
/**
*
* @Description:
* 在业务处理器处理请求之前被调用 如果返回false
* 从当前的拦截器往回执行所有拦截器的afterCompletion(),
* 再退出拦截器链, 如果返回true 执行下一个拦截器,
* 直到所有的拦截器都执行完毕 再执行被拦截的Controller
* 然后进入拦截器链,
* 从最后一个拦截器往回执行所有的postHandle()
* 接着再从最后一个拦截器往回执行所有的afterCompletion()
*
* @param request
*
* @param response
*
* @return: boolean
*
* @author: SongJia
*
* @date: 2016-6-27 下午4:17:51
*
*/
public boolean preHandle(HttpServletRequest request,
HttpServletResponse response, Object handler) throws Exception {
response.setHeader("Access-Control-Allow-Origin", "*");
response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Headers", "x-requested-with");
return true;
}
// 在业务处理器处理请求执行完成后,生成视图之前执行的动作
public void postHandle(HttpServletRequest request,
HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
}
/**
*
* @Description:
* 在DispatcherServlet完全处理完请求后被调用
* 当有拦截器抛出异常时,
* 会从当前拦截器往回执行所有的拦截器的afterCompletion()
*
* @param request
*
* @param response
*
* @param handler
*
* @param ex
*
* @author: SongJia
*
* @date: 2016-6-27 下午4:27:51
*
*/
public void afterCompletion(HttpServletRequest request,
HttpServletResponse response, Object handler, Exception ex)
throws Exception {
}
}
二 applicationContext.xml中的配置
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**" />
<bean class="com.wiimedia.controller.CommonInterceptor">
<property name="excludedUrls">
<list>
<value>/</value>
</list>
</property>
</bean>
</mvc:interceptor>
</mvc:interceptors>
转载于:https://www.cnblogs.com/Matchman/p/7380010.html
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