异常处理方式
* 配置简单异常处理器SimpleMappingExceptionResolver
* 配置自定义异常处理器
自定义异常处理步骤
* 创建异常处理器实现HandlerExceptionResolver
public class MyExceptionResolver implements HandlerExceptionResolver{
/*
* 参数Exception：异常对象
* 返回值ModelAndView：跳转到错误视图信息
*/
public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler,
Exception ex) {
ModelAndView modelAndView = new ModelAndView();
if(ex instanceof MyException) {
modelAndView.addObject("info","自定义异常");
}
else if(ex instanceof ClassCastException) {
modelAndView.addObject("info","类转换异常");
}
modelAndView.setViewName("error");
return modelAndView;
}
* 配置异常处理器
<!-- 配置简单异常处理器
<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
<property name="defaultErrorView" value = "error"></property>
<property name="exceptionMappings">
<map>
<entry key = "java.lang.ClassCastException" value="error1"></entry>
<entry key = "com.zl.exception.MyException" value="error2"></entry>
</map>
</property>
</bean>-->
<!-- 自定义异常 -->
<bean class = "com.zl.resolver.MyExceptionResolver"></bean>
* 编写异常页面
* 测试异常跳转
标签：自定义,SpringMVC,处理,处理器,modelAndView,ModelAndView,异常,ex From： https://www.cnblogs.com/zlyyds/p/16935002.html