我收到错误:
抛出java.lang.ClassNotFoundException: org.springframework.web.servlet.handler.SimpleMappingExceptionResolver
我在本地计算机上点击了网址:http://localhost:8080/SpringMvcExceptionHandling/student
Full Strack Trace是:
我已经检查了大部分问题/答案,但没有得到任何帮助来解决我的问题,请帮忙。
以下是我所做的: 我正在使用Jars进行Spring异常处理(Spring-3.1.2)。我不是在使用maven。
web.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<servlet>
<servlet-name>SpringMvcExceptionHandling</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>SpringMvcExceptionHandling</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
SpringMvcExceptionHandling-servlet.xml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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">
<context:component-scan base-package="com.exceptionhandling.mvc.controller" />
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
<bean
class="org.springframework.web.servlet.handler.
SimpleMappingExceptionResolver">
<property name="exceptionMappings">
<props>
<prop key="com.exceptionhandling.mvc.controller.SpringException">
ExceptionPage
</prop>
<prop key="java.lang.Exception">error</prop>
</props>
</property>
<property name="defaultErrorView" value="/error" />
</bean>
</beans>
StudentController.java
package com.exceptionhandling.mvc.controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import com.exceptionhandling.mvc.model.Student;
@Controller
public class StudentController {
@RequestMapping(value = "/student")
public ModelAndView student() {
return new ModelAndView("student", "command", new Student());
}
@RequestMapping(value = "/addStudent", method = RequestMethod.POST)
@ExceptionHandler({SpringException.class})
public String addStudent(@ModelAttribute("SpringMvcExceptionHandling") Student student,
ModelMap model) {
if (student.getName().length() < 5) {
throw new SpringException("Given name is too short");
} else {
model.addAttribute("name", student.getName());
}
if (student.getAge() < 10) {
throw new SpringException("Given age is too low");
} else {
model.addAttribute("age", student.getAge());
}
model.addAttribute("id", student.getId());
return "result";
}
}
SpringException.java
package com.exceptionhandling.mvc.controller;
public class SpringException extends RuntimeException {
private static final long serialVersionUID = 1L;
private String exceptionMsg;
public SpringException(String exceptionMsg) {
this.exceptionMsg = exceptionMsg;
}
public String getExceptionMsg() {
return exceptionMsg;
}
public void setExceptionMsg(String exceptionMsg) {
this.exceptionMsg = exceptionMsg;
}
}
我的项目结构看起来像
罐
添加了两个外部罐子:
答案 0 :(得分:0)
在您的SpringMvcExceptionHandling-servlet.xml
文件中,您的bean类名称必须是完全限定的(中间没有空格)。
所以你的解决方案必须是:
<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">