学代码最大的烦恼就是记性不好——Spring拦截器配置

学代码最大的烦恼就是记性不好——Spring拦截器配置

Springmvc拦截器
创建拦截器类：

public class MyInterceptor implements HandlerInterceptor {
@Override
public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3) throws Exception {System.out.println("DispatcherServlet完结之后调用");
}	
@Override
public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3) throws Exception {System.out.println("处理完请求之后");
}@Override
public boolean preHandle(HttpServletRequest req, HttpServletResponse resp, Object obj2) throws Exception {HttpSession session = Session();Object obj = Attribute("user");if (obj==null) {System.out.println("没有登录");RequestDispatcher("/login1").forward(req, resp);return false;  //执行之后，不用放行}return true;}
}

配置拦截器&#l里面

<mvc:interceptors><!-- 拦截器 --><mvc:interceptor><!-- 要拦截的配置  所有路径都要拦截--><mvc:mapping path="/**" /><!-- 设置不拦截的配置 --><mvc:exclude-mapping path="/login1" /><mvc:exclude-mapping path="/login" /><!-- 配置拦截器 --><bean class="ller.MyInterceptor" /></mvc:interceptor>
</mvc:interceptors>