Spring MVC Interceptor

1 在spring-servlet.xml中进行如下配置

 

<mvc:interceptors>
		<mvc:interceptor> 
			<mvc:mapping path="/saveObjectInstance.do"/>  
			<mvc:mapping path="/createObjectInstance.do"/>  
			<mvc:mapping path="/cloneObjectInstance.do"/> 
			<bean class="com.hp.it.qdpadmin.web.interceptor.ValidationInterceptor" /> 
		</mvc:interceptor>
</mvc:interceptors>

 说明：

 * path 为被拦截的controller请求的url，可以配置多个

 * bean class 为自定义的Interceptor

 * 拦截器可以配置多个，按先后顺序进行拦截

 

2 定义Interceptor class 实现HandlerInterceptor

 

public class ValidationInterceptor implements HandlerInterceptor {

	private final Logger logger = Logger.getLogger(this.getClass());

	@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 {
		//do validation
               return false;
       }
}