Spring MVC的SimpleMappingExceptionResolver处理异常

た入场券 2021-07-24 11:17 326阅读 0赞

**一 视图**

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"  "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html;  charset=UTF-8">
    <title>异常处理示例</title>
    </head>
    <body>
    
    <a href="hello">没有异常处理</a>
    
    <a href="test">使用简单异常处理器处理异常</a>
    
    <a href="find">使用简单异常处理器处理特定异常</a>
    
    </body>
    </html>

error.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"  "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html;  charset=UTF-8">
    <title>异常处理示例</title>
    </head>
    <body>
    <h3>异常处理页面</h3>
    抛出异常信息：${requestScope.ex.message}
    </body>
    </html>

sqlerror.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"  "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html;  charset=UTF-8">
    <title>异常处理示例</title>
    </head>
    <body>
    <h3>特定异常处理页面</h3>
    抛出异常信息：${requestScope.ex.message}
    </body>
    </html>

**二 控制器**

package org.fkit.controller;
    
    
    import java.sql.SQLException;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.GetMapping;
    
    @Controller
    public class TestController{
        
        @GetMapping("/hello")
        public String hello() throws Exception{
            // 抛出异常
            throw new Exception();
        }
        
        @GetMapping("/test")
        public String test() throws Exception{
            // 模拟异常
            int i = 5/0;
            return "success";
        }
        
        @GetMapping("/find")
        public String find() throws Exception{
            try {
                // 模拟异常
                int i = 5/0;
                return "success";
            } catch (Exception e) {
                throw new SQLException("查找数据失败!");
            }
            
        }
        
    }

**三 配置文件**

<?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:p="http://www.springframework.org/schema/p"
        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">
            
        
        <context:component-scan base-package="org.fkit.controller"/>
        
        <mvc:annotation-driven/>
         
        <mvc:default-servlet-handler/>
        
        
         <bean id="viewResolver"
               class="org.springframework.web.servlet.view.InternalResourceViewResolver"
              p:prefix="/WEB-INF/content/" p:suffix=".jsp"/>
        
        
        <bean  class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver"
          p:defaultErrorView="error"
          p:exceptionAttribute="ex">
          
          <property name="exceptionMappings">
               <props>
                    <prop key="IOException">ioerror</prop>
                    <prop key="SQLException">sqlerror</prop>
               </props>
          </property>
        </bean>
        
    </beans>

**四 测试**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

点击第1个链接

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1][]

点击第2个链接

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 2][]

点击第3个链接

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 3][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/4c795896ff2f4a89bb7790c8ae276a92.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1]: /images/20210724/b49dd27f238644dfa78af8840ee7e930.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 2]: /images/20210724/c0694ed7c6974de5bd5978ddbbbbacbd.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 3]: /images/20210724/27a17cd2683e4c91ad0d661acadb753c.png