一、实现 HandlerExceptionResolver 接口
public class CustomExceptionResolver implements HandlerExceptionResolver {
@Override
public ModelAndView resolveException(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, @Nullable Object o, Exception e) {
ModelAndView modelAndView = new ModelAndView();
modelAndView.addObject("message", e.getMessage());
modelAndView.setViewName("error");
return modelAndView;
}
}
二、创建 Spring MVC 配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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">
<!-- 配置创建 Spring 容器要扫描的包 -->
<context:component-scan base-package="chu.yi.bo">
<!-- 制定扫包规则 ,只扫描使用 @Controller 注解的 JAVA 类 -->
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!-- 配置视图解析器 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/"/>
<property name="suffix" value=".jsp"/>
</bean>
<!-- 配置自定义异常处理器 -->
<bean id="handlerExceptionResolver" class="chu.yi.bo.CustomExceptionResolver"/>
<!-- 加载处理映射器和处理适配器 -->
<mvc:annotation-driven/>
</beans>
三、配置 web.xml
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<servlet>
<!-- 配置 Spring MVC 核心控制器 -->
<servlet-name>DispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<!-- 配置 Spring MVC 核心控制器的参数,读取 Spring MVC 配置文件 -->
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:SpringMVC.xml</param-value>
</init-param>
</servlet>
<!-- 配置 Spring MVC 核心控制器拦截哪些请求 URL -->
<servlet-mapping>
<servlet-name>DispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
四、创建 Controller 测试
@Controller("customExceptionController")
public class CustomExceptionController {
@RequestMapping("/customException")
public String testCustomException() {
int i = 1 / 0;
return "success";
}
}