springMVC 拦截器的两种实现方式

最新推荐文章于 2025-05-21 01:29:54 发布

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#spring #拦截器 Interceptor

本文介绍如何使用两种方式实现 Spring MVC 的拦截器功能：通过实现 HandlerInterceptor 接口和继承 HandlerInterceptorAdapter 类。此外，还展示了如何在 spring-mvc.xml 配置文件中设置拦截器规则，包括路径映射及排除规则。

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1.implements HandlerInterceptor

public class LoginInterceptor 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 arg0, HttpServletResponse arg1,
Object arg2) throws Exception {
System.out.println("这里是拦截器");
return true;

}

2.extends HandlerInterceptorAdapter

public class LoginInterceptor extends HandlerInterceptorAdapter {

@Override
public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1,
Object arg2) throws Exception {
System.out.println("这里是拦截器");
return true;
}
}

在spring-mvc.xml中的配置

<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**" />
<mvc:exclude-mapping path="/resources/**"/>
<mvc:exclude-mapping path="/main/**"/>
<bean class="com.eshore.spring.interceptor.LoginInterceptor" />
</mvc:interceptor>
</mvc:interceptors>