SpringMVC中的 interceptors 拦截器

最新推荐文章于 2024-08-08 07:35:05 发布

原创最新推荐文章于 2024-08-08 07:35:05 发布 · 174 阅读

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文章标签：

#spring #springmvc #拦截器 #interceptors

本文介绍了一个具体的SpringMVC拦截器实现示例，包括Java代码实现和SpringMVC配置文件设置。通过MyInterceptor类实现了HandlerInterceptor接口，定义了请求处理前后的拦截逻辑。

Java代码部分

package interceptors;

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 {
	//进入Handler路径之前拦截
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
			throws Exception {
		System.out.println("preHandle...");
		
		return true;
	}
	//在return视图之前拦截
	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
			ModelAndView modelAndView) throws Exception {
		// TODO Auto-generated method stub
		System.out.println("postHandle...");
	}
	//转发视图后拦截
	@Override
	public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
			throws Exception {
		// TODO Auto-generated method stub
		System.out.println("afterCompletion...");
	}



}

SpringMVC配置文件中的部分

        <!-- 配置过滤器 -->
	<mvc:interceptors>
		<mvc:interceptor>
			<mvc:mapping path="/person/test1"/>
			<bean class="interceptors.MyInterceptor"></bean>
		</mvc:interceptor>
	</mvc:interceptors>