springmvc-异常的处理

1.运行时异常 RuntimeException，
2.自定义异常（业务级别）

public class CustomException extends Exception{

private static final long serialVersionUID = -7927745663334155292L;

//用于保存异常信息
private String message;

public String getMessage() {
return message;
}

public void setMessage(String message) {
this.message = message;
}
}

public class CustomGlobalExceptionResolver implements HandlerExceptionResolver{
//保存异常信息
private String message = "";

@Override
public ModelAndView resolveException(HttpServletRequest request,
HttpServletResponse response, Object arg2, Exception exc) {

if (exc instanceof CustomException) {
//自定义异常
message = ((CustomException)exc).getMessage();
} else {
//运行时异常
message = "对不起，系统异常，请及时联系管理员！";
}

ModelAndView modelAndView = new ModelAndView();
//将错误信息数据放入model中
modelAndView.addObject("message", message);
modelAndView.setViewName("error");
return modelAndView;
}

}

<bean class="com.test.exception.CustomGlobalExceptionResolver"></bean>