拦截器(拦截都是控制层的地址。 filter: )
创建一个类 实现接口 HandlerInterceptor
package com.zhiyou100.wyf.interceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
public class MyInterceptor implements HandlerInterceptor{
@Override
public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
throws Exception {
System.out.println("结束");
}
@Override
public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
throws Exception {
System.out.println("预备");
}
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object arg2) throws Exception {
Object name = request.getSession().getAttribute("name");
if(name!=null) {
return true;
}else {
response.sendRedirect("../denglu.jsp");
return false;
}
}
}
重写接口的中方法
把创建的类配置到springmvc文件中。
<!-- 配置拦截器 -->
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/user/**"/>
<mvc:exclude-mapping path="/user/login"/>
<mvc:exclude-mapping path="/user/register"/>
<mvc:exclude-mapping path="/user/stu1"/>
<bean class="com.zhiyou100.wyf.interceptor.MyInterceptor"></bean>
</mvc:interceptor>
</mvc:interceptors>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
