Question

我已经和Spring框架打了几个星期了，我得到了要显示的普通MVC页面，我将JDBC打印到控制台上。但我似乎无法让这些一起工作......

此时我已经完成了无数的教程和每一个教程似乎有某种类型的错误或问题。

我想我终于成功地聚集了一个非常体面和有效的构建，但是没有，仍然只得到404.

我认为问题可能出在spring-servlet.xml文件中：

<context:component-scan base-package="src" />

我不确定你是否可以加载这样的项目，但这是我能想到的唯一一件事。

我也包括所有其他文件。

控制台错误

WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:spring-mvc' did not find a matching property.

和

SEVERE: Servlet [spring] in web application [/spring-mvc] threw load() exception
java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1275)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1109)
    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:520)
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:501)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:118)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1050)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:989)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4903)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5213)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

的pom.xml

<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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>spring-mvc</groupId>
  <artifactId>spring-mvc</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <build>
    <sourceDirectory>src</sourceDirectory>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.5.1</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <version>3.0.0</version>
        <configuration>
          <warSourceDirectory>WebContent</warSourceDirectory>
        </configuration>
      </plugin>
    </plugins>
  </build>

  <properties>
    <java.version>1.8</java.version>
    <spring.version>3.1.0.RELEASE</spring.version>
    <cglib.version>2.2.2</cglib.version>
  </properties>

  <dependencies>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc-portlet</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>taglibs</groupId>
      <artifactId>standard</artifactId>
      <version>1.1.2</version>
    </dependency>
    <dependency>
      <groupId>org.gatein.common</groupId>
      <artifactId>common-logging</artifactId>
      <version>2.2.2.Final</version>
    </dependency>
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>org.apache.logging.log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>2.8.1</version>
      <type>pom</type>
    </dependency>
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>6.0.5</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>4.3.7.RELEASE</version>
    </dependency>
  </dependencies>
</project>

弹簧servlet.xml中

<?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"
 xsi:schemaLocation="http://www.springframework.org/schema/beans
  http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
  http://www.springframework.org/schema/context
  http://www.springframework.org/schema/context/spring-context-3.0.xsd">

 <!-- Telling container to take care of annotations stuff -->
 <context:annotation-config />

 <!-- Declaring base package -->
 <context:component-scan base-package="controller" />

 <!-- Adding view resolver to show jsp's on browser -->
 <bean id="viewResolver"
  class="org.springframework.web.servlet.view.InternalResourceViewResolver">
  <property name="prefix" value="/WEB-INF/jsp/" />
  <property name="suffix" value=".jsp" />
 </bean>

 <!-- Declare beans -->
 <bean id="userDao" class="dao.UserDaoImpl" />
 <bean id="userService" class="services.UserServiceImpl" />

 <!-- Declare datasource bean -->
 <bean id="dataSource"
  class="org.springframework.jdbc.datasource.DriverManagerDataSource">
  <property name="driverClassName" value="com.mysql.jdbc.Driver" />
  <property name="url" value="jdbc:mysql://localhost:3306/userdb" />
  <property name="username" value="root" />
  <property name="password" value="38613861" />
 </bean>
</beans>

的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
 id="WebApp_ID" version="2.5">
 <display-name>SpringJDBCTemplate</display-name>
 <welcome-file-list>
  <welcome-file>index.jsp</welcome-file>
 </welcome-file-list>

 <servlet>
  <servlet-name>spring</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet-mapping>
  <servlet-name>spring</servlet-name>
  <url-pattern>/</url-pattern>
 </servlet-mapping>
</web-app>

homePageController

package controller;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
import domain.*;
import services.*;

@Controller
public class HomePageController {

 @Autowired
 UserService userService;

 @RequestMapping("/register")
 public ModelAndView registerUser(@ModelAttribute User user) {

  List<String> genderList = new ArrayList<String>();
  genderList.add("male");
  genderList.add("female");

  List<String> cityList = new ArrayList<String>();
  cityList.add("delhi");
  cityList.add("gurgaon");
  cityList.add("meerut");
  cityList.add("noida");

  Map<String, List> map = new HashMap<String, List>();
  map.put("genderList", genderList);
  map.put("cityList", cityList);
  return new ModelAndView("register", "map", map);
 }

 @RequestMapping("/insert")
 public String inserData(@ModelAttribute User user) {
  if (user != null)
   userService.insertData(user);
  return "redirect:/getList";
 }

 @RequestMapping("/getList")
 public ModelAndView getUserLIst() {
  List<User> userList = userService.getUserList();
  return new ModelAndView("userList", "userList", userList);
 }

 @RequestMapping("/edit")
 public ModelAndView editUser(@RequestParam String id,
   @ModelAttribute User user) {

  user = userService.getUser(id);

  List<String> genderList = new ArrayList<String>();
  genderList.add("male");
  genderList.add("female");

  List<String> cityList = new ArrayList<String>();
  cityList.add("delhi");
  cityList.add("gurgaon");
  cityList.add("meerut");
  cityList.add("noida");

  Map<String, Object> map = new HashMap<String, Object>();
  map.put("genderList", genderList);
  map.put("cityList", cityList);
  map.put("user", user);

  return new ModelAndView("edit", "map", map);
 }

 @RequestMapping("/update")
 public String updateUser(@ModelAttribute User user) {
  userService.updateData(user);
  return "redirect:/getList";
 }

 @RequestMapping("/delete")
 public String deleteUser(@RequestParam String id) {
  System.out.println("id = " + id);
  userService.deleteData(id);
  return "redirect:/getList";
 }
}

项目树

Project tree from Eclipse Neon2

Answer 1

不是我的答案，而是解决案件的答案，作为答案发布，因为它深埋在评论中。

抱歉延迟......它仍然不对。我知道因为 Eclipse不应该将包显示为main.java.controller .... Maven 忽略该文件夹，然后从java文件夹下开始 src文件夹本身。你的项目肯定有问题。尝试清理一切，从eclipse中删除项目，删除（物理上）文件夹.settings和文件.classpath和文件。项目。在控制台上继续你的文件夹项目并运行mvn clean eclipse：clean然后打开if的所有文件夹（就像我展示的图像一样）你把它贴在这里，这样我就可以看出它是错的了

- Jorge Campos

Spring JDBC MVC项目给出了404

控制台错误

的pom.xml

弹簧servlet.xml中

的web.xml

homePageController

项目树

1 个答案: