Maven建立web项目:SpringMVC+Mybatis

项目构建步骤

一、File->New->Project

勾选Create from archetype

点击Next

二、输入GroupId、ArtifactId

点击Next

三、继续点击Next，输入Project name

点击Finish，完成基本项目建立

四、在src/main下添加java目录做为源文件目录

在main上右键new Directory并命名为java；

同时在Project Structure中，将java目录设置为Sources，而后Apply，点击OK。

五、配置pom.xml

能够在maven仓库进行相关依赖搜索：http://www.mvnrepository.com/

利用<dependency>元素进行项目所依赖的jar包配置，maven经过对pom.xml的配置使得再也不须要导入jar包那么麻烦

六、配置tomcat

七、资源文件编译时一块儿打包到输出目录

    IDEA的maven项目中，默认源代码目录下的xml等资源文件并不会在编译的时候一块打包进classes文件夹，而是直接舍弃掉。

    项目中可能包含一些静态资源如：mapping/*.xml，又或者一些spring的配置文件:spring.xml、spring-mvc.xml等等。这些静态资源都要配置到target目录下才能保证项目运行，不然会报找不到运行所需的这些文件。

target目录设置，以下图：

pom.xml在resources中配置静态资源文件的目录：

<resources>
    <!-- 该配置很重要，用于将directory下的资源复制到classpath下面。即target/classes下面-->
    <resource>
        <targetPath>whu/edu/irlab/mapping/</targetPath>
        <directory>src/main/java/whu/edu/irlab/mapping/</directory>
        <includes>
            <include>*.xml</include>
        </includes>
    </resource>
    <resource>
        <directory>src/main/resources</directory>
    </resource>
</resources>

在pom.xml配置后能够看见target目录以下，配置的静态资源文件被包含进来了

MavenDemo简单实例

一、项目结构

注：  在WEB-INFO/lib下存放有jstl.jar和standard.jar，须要将其导入项目的Libraries中(通常使用Maven不这样作，直接在pom.xml里面配置响应的jar包依赖就行，当时自动填补依赖有些问题故采起比较麻烦的方式作)

如图：

二、pom.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<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>
  <packaging>war</packaging>

  <name>MavenDemo</name>
  <groupId>MavenDemo</groupId>
  <artifactId>MavenDemo</artifactId>
  <version>1.0-SNAPSHOT</version>

  <dependencies>
      <!-- spring start-->
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-core</artifactId>
          <version>4.1.6.RELEASE</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-beans</artifactId>
          <version>4.1.6.RELEASE</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context</artifactId>
          <version>4.1.6.RELEASE</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-web</artifactId>
          <version>4.1.6.RELEASE</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>4.1.6.RELEASE</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-tx</artifactId>
          <version>4.1.6.RELEASE</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context-support</artifactId>
          <version>4.1.6.RELEASE</version>
      </dependency>

      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>4.1.6.RELEASE</version>
      </dependency>
      <!-- spring end-->

      <!-- mybatis start-->
      <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis</artifactId>
          <version>3.2.8</version>
      </dependency>

      <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis-spring</artifactId>
          <version>1.2.2</version>
      </dependency>
      <!-- mybatis end-->

      <!-- mysql connector start-->
      <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>5.1.34</version>
      </dependency>
      <!-- mysql connector end-->

      <!-- junit start-->
      <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>4.11</version>
      </dependency>
      <!-- junit end-->

      <!-- 阿里巴巴数据源包 -->
      <dependency>
          <groupId>com.alibaba</groupId>
          <artifactId>druid</artifactId>
          <version>1.0.2</version>
      </dependency>
  </dependencies>

</project>

三、web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
         xmlns="http://java.sun.com/xml/ns/j2ee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <listener>
        <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
    </listener>

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

    <welcome-file-list>
        <welcome-file>/index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

四、applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       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-2.0.xsd
                           http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.0.xsd
                           ">
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://localhost:3306/mybatis" />
        <property name="username" value="root" />
        <property name="password" value="root" />
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="mapper" />
    </bean>
</beans>

五、dispathcer-servlet.xml

<?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:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context-3.2.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">

    <mvc:default-servlet-handler />

    <mvc:annotation-driven />

    <context:component-scan base-package="controller" />
    <context:component-scan base-package="mapper" />
    <context:component-scan base-package="service" />

    <bean id="viewResovler" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

六、model/User.java

package model;

/**
 * Created by Roger on 2015/9/17.
 */
public class User {
    private int id;
    private String name;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

七、mapper/UserMapper.java

package mapper;

import model.User;
import org.apache.ibatis.annotations.Result;
import org.apache.ibatis.annotations.Results;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * Created by Roger on 2015/9/17.
 */
@Repository("userMapper")
public interface UserMapper {
    @Select("select * from user")
    @Results(value = {@Result(id = true, property = "id", column = "id"),
                @Result(property = "name", column = "name")})
    public List<User> selectAll();
}

八、service/impl/UserServiceImpl.java

package service.impl;

import mapper.UserMapper;
import model.User;
import org.springframework.stereotype.Service;
import service.UserService;

import javax.annotation.Resource;
import java.util.List;

/**
 * Created by Roger on 2015/9/17.
 */
@Service("userService")
public class UserServiceImpl implements UserService {
    @Resource(name = "userMapper")
    private UserMapper userMapper;

    public List<User> selectAll() {
        return userMapper.selectAll();
    }
}

九、controller/UserController.java

package controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import service.UserService;

import javax.annotation.Resource;

/**
 * Created by Roger on 2015/9/17.
 */
@Controller
public class UserController {
    @Resource(name = "userService")
    private UserService userService;

    @RequestMapping("/getUser")
    public String getUser(Model model) {
        System.out.println(userService.selectAll().size());
        model.addAttribute("user", userService.selectAll());
        return "listUser";
    }
}

十、WEB-INFO/jsp/listUser.jsp

<%--
  Created by IntelliJ IDEA.
  User: Roger
  Date: 2015/9/17
  Time: 11:01
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core_rt" %>
<html>
<head>
    <title>list user</title>
</head>
<body>
    <c:forEach items="${user}" var="item">
        ${item.id}--${item.name}
        <br>
    </c:forEach>
</body>
</html>

十一、运行结果

经过getUser来访问数据库中user表格的数据

完成代码下载连接：http://pan.baidu.com/s/1qW01FmW