org.apache.jasper.JasperException：java.lang.ClassNotFoundException：

Question

大家好我是Spring，maven，jsp，Servlet的新手。当我运行我的项目时，我收到此错误。请让我知道我应该怎么做，我提供下面的所有细节。提前致谢

错误 org.apache.jasper.JasperException：java.lang.ClassNotFoundException：

目录结构

URL - http://localhost:8080/my-app/ContactForm.jsp

的pom.xml

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>my-app</name>
  <url>http://maven.apache.org</url>
  
  <properties>
    <java.version>1.7</java.version>
    <spring.version>3.2.13.RELEASE</spring.version>
    <cglib.version>2.2.2</cglib.version>
 </properties> 
   
  <dependencies>
  
  <!-- Spring Core & MVC -->
  
   <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>3.2.13.RELEASE</version>
    </dependency>
 
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>3.2.13.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-orm</artifactId>
        <version>3.2.13.RELEASE</version>
        <type>jar</type>
        <scope>compile</scope>
    </dependency>
    
    <!-- CGLib for @Configuration -->
    <dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib-nodep</artifactId>
        <version>2.1_2</version>
        <scope>runtime</scope>
    </dependency>
    
    <!-- Servlet Specifiaction -->
  
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.0.1</version>
        <scope>provided</scope>
    </dependency>
   <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <version>2.1</version>
        <scope>provided</scope>
    </dependency>
    
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
    </dependency> 
    
    <dependency>
	    <groupId>org.springframework.security</groupId>
	    <artifactId>spring-security-taglibs</artifactId>
	    <version>3.0.7.RELEASE</version>
	</dependency>
    
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

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控制器类

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package net.codejava.spring.controller;

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;

import net.codejava.spring.dao.ContactDAO;
import net.codejava.spring.model.Contact;

import org.springframework.beans.factory.annotation.Autowired;
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 antlr.collections.List;


public class HomeController {
	
	@Autowired
	 private ContactDAO contactDAO;
	
	@RequestMapping(value="/")
	public ModelAndView listContact(ModelAndView model) throws IOException{
	    List listContact = (List) contactDAO.list();
	    model.addObject("listContact", listContact);
	    model.setViewName("home");
	 
	    return model;
	}
	
	
	@RequestMapping(value = "/newContact", method = RequestMethod.GET)
	public ModelAndView newContact(ModelAndView model) {
	    Contact newContact = new Contact();
	    model.addObject("contact", newContact);
	    model.setViewName("ContactForm");
	    return model;
	}
	
	@RequestMapping(value = "/saveContact", method = RequestMethod.POST)
	public ModelAndView saveContact(@ModelAttribute Contact contact) {
	    contactDAO.saveOrUpdate(contact);
	    return new ModelAndView("redirect:/");
	}
	
	@RequestMapping(value = "/deleteContact", method = RequestMethod.GET)
	public ModelAndView deleteContact(HttpServletRequest request) {
	    int contactId = Integer.parseInt(request.getParameter("id"));
	    contactDAO.delete(contactId);
	    return new ModelAndView("redirect:/");
	}
	
	@RequestMapping(value = "/editContact", method = RequestMethod.GET)
	public ModelAndView editContact(HttpServletRequest request) {
	    int contactId = Integer.parseInt(request.getParameter("id"));
	    Contact contact = contactDAO.get(contactId);
	    ModelAndView model = new ModelAndView("ContactForm");
	    model.addObject("contact", contact);
	 
	    return model;
	}
	

}

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MvcConfiguration.java

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package net.codejava.spring.config;

import javax.sql.DataSource;

import net.codejava.spring.dao.ContactDAO;
import net.codejava.spring.dao.ContactDAOImpl;
 
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;


@Configuration
@ComponentScan(basePackages="net.codejava.spring")
@EnableWebMvc

public class MvcConfiguration extends WebMvcConfigurerAdapter {
	
	 @Bean
	    public ViewResolver getViewResolver(){
	        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
	        resolver.setPrefix("/WEB-INF/");
	        resolver.setSuffix(".jsp");
	        return resolver;
	    }
	 
	 @Override
	    public void addResourceHandlers(ResourceHandlerRegistry registry) {
	        registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
	    }

	 @Bean
	    public DataSource getDataSource() {
	        DriverManagerDataSource dataSource = new DriverManagerDataSource();
	        dataSource.setDriverClassName("oracle.jdbc.driver.OracleDriver");
	        dataSource.setUrl("jdbc:oracle://localhost:1521/orcl");
	        dataSource.setUsername("system");
	        dataSource.setPassword("admin");
	         
	        return dataSource;
	    }
	 
	 @Bean
	    public ContactDAO getContactDAO() {
	        return new ContactDAOImpl(getDataSource());
	    }
}

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