Springmvc异常映射2种实现方法

Springmvc异常映射2种实现方法

请求出现 想要跳转到错误页面

就需要对springmvc进行配置

方法1:基于xml的配置

springmvc.xml配置类

erroe

2.方法2：基于@ControllerAdvice

@ControllerAdvice

public class ExceptionResolver {

@ExceptionHandler(value = NullPointerException.class)

public ModelAndView nullPointerExceptionResovler(NullPointerException e, HttpServletRequest request, HttpServletResponse response) throws IOException {

String viewName="erroe";

return commonReslover(viewName,response,request,e);

}

private ModelAndView commonReslover(String viewName,HttpServletResponse response,HttpServletRequest request,Exception e) throws IOException {

boolean judgeResult = CrowdUtil.judgeRequestType(request);

if(judgeResult){

ResultEntity

//转成gson对象

Gson gson=new Gson();

response.getWriter().write(gson.tojson(resultEntity));

return null;

}

ModelAndView modelAndView=new ModelAndView();

modelAndView.addObject("exception",e);

modelAndView.setViewName(viewName);

return modelAndView;

}

}

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