spingmvc统一异常处理，modelAndView 无法定位到指定页面

2017-08-23 02:27:23 881 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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在做一个spirngmvc异常统一处理的功能，但是代码写好后，异常消息可以全局捕获，但是却不能返回至指定页面，而且将同一个页面在controller中用modelAndView可以返回，说明在但是在SystemExceptionResolver就不行。
百思不得其解，请求帮助。
相关代码：
1、定义一个异常类



public class BusinessException extends RuntimeException {

	private static final long serialVersionUID = 1L;



	public BusinessException() {

		super();

	}



	public BusinessException(String message, Throwable cause) {

		super(message, cause);

	}



	public BusinessException(String message) {

		super(message);

	}



	public BusinessException(Throwable cause) {

		super(cause);

	}



}

2、实现HandlerExceptionResolver统一处理异常



import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;



import org.slf4j.LoggerFactory;

import org.springframework.web.servlet.HandlerExceptionResolver;

import org.springframework.web.servlet.ModelAndView;



public class SystemExceptionResolver implements HandlerExceptionResolver{

	   private static org.slf4j.Logger logger = LoggerFactory.getLogger(SystemExceptionResolver.class);

	@Override

	public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler,

			Exception ex) {

		BusinessException exception=null;

		 //如果抛出的是系统自定义的异常则直接转换

        if(ex instanceof BusinessException) {

        	exception = (BusinessException) ex;

        } else {

            //如果抛出的不是系统自定义的异常则重新构造一个未知错误异常BusinessException

        	exception = new BusinessException("系统未知错误");

        }

        //向前台返回错误信息

        ModelAndView modelAndView = new ModelAndView();

        modelAndView.addObject("exception", exception);

        logger.info(exception.getMessage());

        modelAndView.setViewName("/sysui/system/error");

        return modelAndView;

	}

}

3、spring-mvc.xml配置视图解析器，配置SystemExceptionResolver



<bean

		class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">

		<property name="mediaTypes">

			<map>

				<entry key="atom" value="application/atom+xml" />

				<entry key="html" value="text/html" />

				<entry key="json" value="application/json" />

			</map>

		</property>

		<property name="viewResolvers">

			<list>

				<bean

					class="org.springframework.web.servlet.view.BeanNameViewResolver" />

				<bean

					class="org.springframework.web.servlet.view.InternalResourceViewResolver">

					<property name="prefix" value="/" />

					<property name="suffix" value=".jsp" />

				</bean>

			</list>

		</property>

		<property name="defaultViews">

			<list>

				<bean

					class="org.springframework.web.servlet.view.json.MappingJackson2JsonView" />

			</list>

		</property>

	</bean>

  

	<bean id="multipartResolver"

		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

		<property name="defaultEncoding" value="utf-8"></property>

		<property name="maxUploadSize" value="10485760000"></property>

		<property name="maxInMemorySize" value="40960"></property>

	</bean>

    <!-- 自定义的全局异常处理器  只要实现HandlerExceptionResolver接口就是全局异常处理器-->

    <bean id="systemExceptionResolver" class="com.cicc.api.core.base.exception.SystemExceptionResolver"/>