package demo15AnnotationException;import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;/*** Created by mycom on 2018/3/30.*/
@Controller
public class ExceptionController {/*** 这个标签就代表有异常的话就走这个方法* @ExceptionHandler（）* 这个括号中可以指定你想要的特定的异常类型，不写的话就是顶级异常* @param ex* @return*/@ExceptionHandlerpublic ModelAndView handlerException(Exception ex) {ModelAndView mv=new ModelAndView();mv.addObject("ex",ex);//保存的数据，在页面上用EL表达式展示错误信息//默认情况，下面两个条件都不满足走这个，mv.setViewName("error");//判断异常类型if(ex instanceof NameException){mv.setViewName("nameException");}if(ex instanceof AgeException){mv.setViewName("ageException");}return mv;}@RequestMapping("/first")public String doFirst(String name,int age) throws Exception {//根据异常的不同返回不同的页面if(!name.equals("admin")){throw new NameException("用户名异常");}if(age>60){throw new AgeException("年龄不符合");}return "success";}
}

package demo15AnnotationException;/*** Created by mycom on 2018/3/30.*/
public class NameException extends Exception {public NameException() {super();}public NameException(String message) {super(message);}
}

package demo15AnnotationException;/*** Created by mycom on 2018/3/30.*/
public class AgeException extends Exception {public AgeException() {super();}public AgeException(String message) {super(message);}
}

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:mvc="http://www.springframework.org/schema/mvc"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"><!--包扫描器--><context:component-scan base-package="demo15AnnotationException"></context:component-scan><!--视图解析器--><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/error/"></property><property name="suffix" value=".jsp"></property></bean><!--注解驱动--><mvc:annotation-driven></mvc:annotation-driven></beans>