spring mvc拦截器中用正则表达式匹配url
<mvc:mapping path="/^(?!front)/" />
Spring MVC拦截器,登录拦截简单配置
http://blog.csdn.net/code_du/article/details/24304955
SpringMVC的拦截器(Interceptor)和Servlet的过滤器(Filter)有着近乎相同的功能,推荐登录使用Filter去做登录的拦截(个人比较喜欢Filter过滤的范围,要比Interceptor大很多)。
好了,首先写SpringMVC的拦截器,我们要写一个类,并且这个类实现HandlerInterceptor接口(也可以继承HandlerInterceptorAdapter类):
/**
*
*/
package com.zjoa.interceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.springframework.stereotype.Repository;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
/**
*
* @author DuZhuo
* 登录拦截器
*/
@Repository
public class SystemInitInterceptor implements HandlerInterceptor {
@Override
public void afterCompletion(HttpServletRequest arg0,
HttpServletResponse arg1, Object arg2, Exception arg3)
throws Exception {
}
@Override
public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
Object arg2, ModelAndView arg3) throws Exception {
}
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
Object arg2) throws Exception {
//获取url地址
String reqUrl=request.getRequestURI().replace(request.getContextPath(), "");
//当url地址为登录的url的时候跳过拦截器
if(reqUrl.contains("/login.htm")){
return true;
}else{
HttpSession session=request.getSession();
Object obj=session.getAttribute("user");
if(obj==null||"".equals(obj.toString())){
response.sendRedirect("error.jsp");
}
}
return true;
}
}
然后我们去配置SpringMVC的xml文件:
<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<context:component-scan base-package="com.zjoa"/>
<!--设置登录拦截器 -->
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/*.htm" />
<mvc:mapping path="/*/*.htm" />
<bean class="com.zjoa.interceptor.SystemInitInterceptor"/>
</mvc:interceptor>
</mvc:interceptors>
</beans>
SpringMVC拦截器简单使用
http://www.360doc.com/content/14/0217/11/9297708_353160765.shtml
一、拦截器的配置
1、传统的配置
<bean class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" >
<property name="interceptors">
<!-- 多个拦截器,顺序执行 -->
<list>
<ref bean="commonInterceptor"/>
</list>
</property>
</bean>
<!--
如果不定义mappingURL,则默认拦截所有对Controller的请求 ;
可以使用正则表达式对url进行匹配,从而更细粒度的进行拦截(.*/entryOrJsonController\.do\?action=reg.*);
-->
<bean id="commonInterceptor" class="com.wy.interceptor.CommonInterceptor">
<property name="mappingURL" value=".*/entryOrJsonController\.do\?action=reg.*"/>
</bean>
2、基于注解的配置
<!-- 拦截器 -->
<mvc:interceptors>
<!-- 多个拦截器,顺序执行 -->
<mvc:interceptor>
<mvc:mapping path="/entryOrJsonController/*" /><!-- 如果不配置或/*,将拦截所有的Controller -->
<bean class="com.wy.interceptor.CommonInterceptor"></bean>
</mvc:interceptor>
</mvc:interceptors>
二、拦截器类
package com.wy.interceptor;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
public class CommonInterceptor implements HandlerInterceptor {
private Logger log = Logger.getLogger(CommonInterceptor.class);
public CommonInterceptor() {
// TODO Auto-generated constructor stub
}
private String mappingURL;//利用正则映射到需要拦截的路径
public void setMappingURL(String mappingURL) {
this.mappingURL = mappingURL;
}
/**
* 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()
*/
@Override
public boolean preHandle(HttpServletRequest request,
HttpServletResponse response, Object handler) throws Exception {
// TODO Auto-generated method stub
log.info("==============执行顺序: 1、preHandle================");
String url=request.getRequestURL().toString();
if(mappingURL==null || url.matches(mappingURL)){
request.getRequestDispatcher("/msg.jsp").forward(request, response);
return false;
}
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
@Override
public void postHandle(HttpServletRequest request,
HttpServletResponse response, Object handler,
ModelAndView modelAndView) throws Exception {
// TODO Auto-generated method stub
log.info("==============执行顺序: 2、postHandle================");
}
/**
* 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()
*/
@Override
public void afterCompletion(HttpServletRequest request,
HttpServletResponse response, Object handler, Exception ex)
throws Exception {
// TODO Auto-generated method stub
log.info("==============执行顺序: 3、afterCompletion================");
}
}
注意:注释中的说明。
完整的spring配置文件
<?xml version="1.0" encoding="UTF-8" ?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-3.0.xsd">
<!-- 默认的注解映射的支持 ,它会自动注册DefaultAnnotationHandlerMapping 与AnnotationMethodHandlerAdapter
<mvc:annotation-driven />
-->
<!-- 配置静态资源,直接映射到对应的文件夹,不被DispatcherServlet处理,3.04新增功能,需要重新设置spring-mvc-3.0.xsd -->
<mvc:resources mapping="/js/**" location="/js/" />
<!-- 自动扫描注解的Controller -->
<context:component-scan base-package="com.wy.controller.annotation" />
<!-- 处理在类级别上的@RequestMapping注解-->
<bean
class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" >
<property name="interceptors">
<!-- 多个拦截器,顺序执行 -->
<list>
<ref bean="commonInterceptor"/>
</list>
</property>
</bean>
<!--
如果不定义mappingURL,则默认拦截所有对Controller的请求 ;
可以使用正则表达式对url进行匹配,从而更细粒度的进行拦截(.*/entryOrJsonController\.do\?action=reg.*);
-->
<bean id="commonInterceptor" class="com.wy.interceptor.CommonInterceptor">
<property name="mappingURL" value=".*/entryOrJsonController\.do\?action=reg.*"/>
</bean>
<!-- 处理方法级别上的@RequestMapping注解-->
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" >
<property name="messageConverters">
<util:list id="beanList">
<ref bean="mappingJacksonHttpMessageConverter"/>
</util:list>
</property>
</bean>
<!--
将指定路径的请求直接转到对应的view上,而不需要特定的controller来处理请求 .
注意:此处的映射路径是/hello,请求时http://localhost:8080/SpringMVC/hello
不能在hello.xxx,而不使用此种方式的映射可以加的,因为web.xml配置的是‘/’
-->
<mvc:view-controller path="/hello" view-name="hello" />
<!-- 视图解析器策略 和 视图解析器 -->
<!-- 对JSTL提供良好的支持 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 默认的viewClass,可以不用配置
<property name="viewClass" value="org.springframework.web.servlet.view.InternalResourceView" />
-->
<property name="prefix" value="/WEB-INF/page/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 处理JSON数据转换的 -->
<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
<!-- 为了处理返回的JSON数据的编码,默认是ISO-88859-1的,这里把它设置为UTF-8,解决有乱码的情况 -->
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
<!-- 拦截器 -->
<mvc:interceptors>
<!-- 多个拦截器,顺序执行 -->
<mvc:interceptor>
<mvc:mapping path="/entryOrJsonController/*" /><!-- 如果不配置或/*,将拦截所有的Controller -->
<bean class="com.wy.interceptor.CommonInterceptor"></bean>
</mvc:interceptor>
</mvc:interceptors>
<!--
ResourceBundleViewResolver通过basename所指定的ResourceBundle解析视图名。
对每个待解析的视图,ResourceBundle里的[视图名].class所对应的值就是实现该视图的类。
同样,[视图名].url所对应的值是该视图所对应的URL。
可以指定一个parent view,其它的视图都可以从parent view扩展。
用这种方法,可以声明一个默认的视图。
<bean id="messageSource"
class="org.springframework.context.support.ResourceBundleMessageSource">
<property name="basename" value="welcome" />
</bean>
-->
</beans>