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从零开始 java spring+mybatis 搭建项目。

用到的工具:maven,mybatis

1.创建新项目：

我创建的是maven项目，然后编辑pom.xml文件，通过maven插件获得之后要用到的一些依赖，这里可以先配置一部分，之后用到的时候再添加新的也可以。例如：

<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>myspringmvc</groupId>
  <artifactId>myspringmvc</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>myspringmvc Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <properties>
    <spring.version>4.1.1.RELEASE</spring.version>
    <mysql.jdbc.version>5.1.6</mysql.jdbc.version>
    <!-- mybatis版本号 -->
    <mybatis.version>3.3.0</mybatis.version>
  </properties>

  <dependencies>
    <!-- springframe-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-oxm</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
      <scope>test</scope>
    </dependency>

    <!--junit-->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

    <!--servlet/jsp api-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.0.1</version>
    </dependency>

    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.1</version>
      <scope>provided</scope>
    </dependency>

    <!--aspectj start-->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.8.6</version>
    </dependency>

    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjrt</artifactId>
      <version>1.8.6</version>
    </dependency>

    <!--c3p0-->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.1</version>
    </dependency>

    <!--mybatis-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>
    <!--mybatis spring整合-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.2.3</version>
    </dependency>

    <!--mysql driver-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.jdbc.version}</version>
    </dependency>

    <!--jstl-->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

    <!--log-->
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.7.12</version>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.12</version>
    </dependency>

    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>

  </dependencies>

  <build>
    <finalName>myspringmvc</finalName>
    <plugins>
      <!--mybatis 逆向工程插件-->
      <plugin>
        <groupId>org.mybatis.generator</groupId>
        <artifactId>mybatis-generator-maven-plugin</artifactId>
        <version>1.3.2</version>
        <configuration>
          <verbose>true</verbose>
          <overwrite>true</overwrite>
          <configurationFile>src/main/resources/generateConfig.xml</configurationFile>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <configuration>
          <source>1.6</source>
          <target>1.6</target>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-surefire-plugin</artifactId>
        <configuration>
          <includes>
            <include>**/*Tests.java</include>
          </includes>
        </configuration>
      </plugin>
    </plugins>
  </build>
</project>

注意到下面有一个关于mybatis逆向工程插件的配置，是之后会用到的。

2.编辑目录：

在自己的项目目录线面mkdir一些目录出来，大致的结构如图：

从零开始 java spring+mybatis 搭建项目。

这里面com.java.myspring.mvc 目录下面都是放的java代码，resource 是放一些配置资源，包括一些.xml文件也在这里，mapper目录是存放之后要生成的mybatis mapperl文件。

3.生成sql mapper

首先要给mybatis插件一个配置文件，根据这个配置文件生成。

编辑generateConfig.xml，生成的代码和配置文件位置如图，如图：

<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
    <!-- 配置文件路径 -->
    <!--<properties url="${mybatis.generator.generatorConfig.properties}"/>-->

    <!--数据库驱动包路径 -->
    <!--<classPathEntry location="/Users/luolidong/.m2/repository/mysql/mysql-connector-java/5.1.34/mysql-connector-java-5.1.34.jar"/>-->

    <classPathEntry location="/Users/zhangxingang/.m2/repository/mysql/mysql-connector-java/5.1.6/mysql-connector-java-5.1.6.jar"/>
    <context id="SPYMySQLTables" targetRuntime="MyBatis3">
        <!-- 自动识别数据库关键字，默认false，如果设置为true，根据SqlReservedWords中定义的关键字列表；
         一般保留默认值，遇到数据库关键字（Java关键字），使用columnOverride覆盖
      -->
        <property name="autoDelimitKeywords" value="false"/>
        <!-- 生成的Java文件的编码 -->
        <property name="javaFileEncoding" value="UTF-8"/>
        <!-- 格式化java代码 -->
        <property name="javaFormatter" value="org.mybatis.generator.api.dom.DefaultJavaFormatter"/>
        <!-- 格式化XML代码 -->
        <property name="xmlFormatter" value="org.mybatis.generator.api.dom.DefaultXmlFormatter"/>

        <!-- beginningDelimiter和endingDelimiter：指明数据库的用于标记数据库对象名的符号，比如ORACLE就是双引号，MYSQL默认是`反引号； -->
        <property name="beginningDelimiter" value="`"/>
        <property name="endingDelimiter" value="`"/>


        <!--关闭注释 -->
        <commentGenerator>
            <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
            <property name="suppressDate" value="true"/>
        </commentGenerator>

        <!--数据库连接信息 -->
        <!-- <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://set-gh-dba-dba-hulk-test181.corp.sankuai.com:5002/movie_service?characterEncoding=UTF-8"
                        userId="movie_service"
                        password="movie_service">
        </jdbcConnection>-->

        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://127.0.0.1:3306/testsql?characterEncoding=UTF-8"
                        userId="root"
                        password="">
        </jdbcConnection>

        <!-- 默认false，把JDBC DECIMAL 和 NUMERIC 类型解析为 Integer，为 true时把JDBC DECIMAL 和
            NUMERIC 类型解析为java.math.BigDecimal -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!--生成的model 包路径 -->
        <javaModelGenerator targetPackage="com.java.myspring.mvc.model"
                            targetProject="src/main/java">
            <!-- enableSubPackages:是否让schema作为包的后缀 -->
            <property name="enableSubPackages" value="false" />
            <!-- 从数据库返回的值被清理前后的空格 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>

        <!--生成xml mapper文件 路径 -->
        <sqlMapGenerator targetPackage="mapper"
                         targetProject="src/main/resources">
            <property name="enableSubPackages" value="false"/>
        </sqlMapGenerator>

        <!-- 生成的Dao接口 的包路径 -->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.java.myspring.mvc.mapper"
                             targetProject="src/main/java">
            <property name="enableSubPackages" value="false"/>
        </javaClientGenerator>

        <!--对应数据库表名 -->
        <!--<table tableName="user_info" domainObjectName="UserInfo" enableCountByExample="true" enableUpdateByExample="true" enableDeleteByExample="true" enableSelectByExample="true" selectByExampleQueryId="true" />-->
        <!--<table tableName="course" domainObjectName="Course" enableCountByExample="true" enableUpdateByExample="true" enableDeleteByExample="true" enableSelectByExample="true" selectByExampleQueryId="true"/>-->
        <table tableName="user" domainObjectName="User" enableCountByExample="true" enableUpdateByExample="true" enableDeleteByExample="true" enableSelectByExample="true" selectByExampleQueryId="true" />

        <!-- 有些表的字段需要指定java类型
        <table schema="" tableName="">
           <columnOverride column="" javaType="" />
        </table>
        -->

    </context>
</generatorConfiguration>
从零开始 java spring+mybatis 搭建项目。

代码里有关于生成的mapper类，mapper.xml文件的生成路径配置，和对数据库中哪个表生成类，有详细的配置，我这里面是把dao接口放在了mapper目录，model目录放生成的model。然后关于数据库是本地的mysql的testsql这个数据库中的user表。

—————————基本的项目结构搭建完成了，下面开始写代码了。—————————

Spring bean:

首先把关于项目用到的bean 配置好，我放在resource/config目录下面。

文件结构截图和代码如下：

从零开始 java spring+mybatis 搭建项目。
jdbc.properties：
jdbc.driver=com.mysql.jdbc.Driver

jdbc.url=jdbc:mysql://localhost:/testsql
jdbc.username=root
jdbc.password=


#connection pool settings
# maxIdle是最大的空闲连接数，这里取值为20，表示即使没有数据库连接时依然可以保持20个空闲的连接，它们不会被清除，随时处于待命状态
# maxActive是最大激活连接数，这里取值为190，表示同时最多有190个数据库连接
jdbc.pool.maxIdle=
jdbc.pool.minIdle=
jdbc.pool.maxActive=
jdbc.pool.maxIdleTime=

log4j.properties：

log4j.rootLogger=DEBUG, Console

#Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-p [%c] - %m%n

log4j.logger.java.sql.ResultSet=INFO
log4j.logger.org.apache=INFO
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG

这里面有个方法，因为idea我没有找到直接new .properties文件的地方，我就是用sublime写的，然后存到这个目录下面。

然后是spring配置，这里我把这些.xml文件都放到了spring目录下。

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.xsd">

    <import resource="classpath*:config/spring/applicationContext-*.xml"/>
</beans>

applicationContext-dao.xml:

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       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.xsd">


    <!--获取数据库配置文件-->
    <context:property-placeholder location="classpath:config/jdbc.properties"/>

    <!--设置数据源c3p0-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="maxPoolSize" value="${jdbc.pool.maxIdle}"/>
        <property name="minPoolSize" value="${jdbc.pool.minIdle}"/>
        <!--   <property name="maxActive" value="40"/>-->
        <property name="maxIdleTime" value="${jdbc.pool.maxIdleTime}"/>
    </bean>

    <!--sqlsessionFactory bean-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!--自动扫描mapper接口，并注入sqlsession-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.java.myspring.mvc.mapper”/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>

</beans>

applicationContext-transaction.xml:

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">

    <import resource="applicationContext-dao.xml"/>

    <bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <tx:advice id="txAdvice" transaction-manager="dataSourceTransactionManager">
        <tx:attributes>
            <tx:method name="find*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="add*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.elinzhou.ixxs.service.*.*(..))"/>
    </aop:config>
</beans>

applicationContext-service.xml:

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       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.xsd">

    <!--扫描service-->
    <context:component-scan base-package="com.java.myspring.mvc.service"/>

    <!--
    <bean name="zoo" class="com.meituan.spy.service.impl.BeanZooImpl">
        <property name="name" value="monkey"/>
        <property name="ability" value="climb"/>
    </bean> -->

</beans>
Spring-mvc:
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:task="http://www.springframework.org/schema/task"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/task
        http://www.springframework.org/schema/task/spring-task-3.0.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">

       <context:component-scan base-package="com.java.myspring.mvc.controller"/>
       <tx:annotation-driven/>

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

然后是java代码的实现，首先实现简单的一个服务，user get 和add del 服务,简单的三个类。

从零开始 java spring+mybatis 搭建项目。

Interface UserService:

package com.java.myspring.mvc.service;

import com.java.myspring.mvc.model.User;

import java.util.List;

public interface UserService {
    List<User> findUser() throws Exception;
    User findUserById(int id) throws Exception;
    int addUser(User user) throws Exception;
    int deleteUser(int id) throws Exception;
}
           
UserServiceImpl :

package com.java.myspring.mvc.service.impl;

import com.java.myspring.mvc.mapper.UserMapper;
import com.java.myspring.mvc.model.User;
import com.java.myspring.mvc.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserServiceImpl implements UserService{
    @Autowired
    private UserMapper userMapper;

    public List<User> findUser() throws Exception{
        List<User> users = userMapper.selectByExample(null);
        System.out.println(users);
        return users;
    }

    public User findUserById(int id) throws Exception {
        User user = userMapper.selectByPrimaryKey(id);
        return user;
    }

    public int addUser(User user) throws Exception{
        return userMapper.insert(user);
    }

    public int deleteUser(int id) throws Exception{
        return userMapper.deleteByPrimaryKey(id);
    }
}

以上两个是关于User的接口和实现，他们自动绑定了对应的Mapper。

UserController:

package com.java.myspring.mvc.controller;

import com.java.myspring.mvc.model.User;
import com.java.myspring.mvc.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

import static org.springframework.web.bind.annotation.RequestMethod.DELETE;
import static org.springframework.web.bind.annotation.RequestMethod.GET;
import static org.springframework.web.bind.annotation.RequestMethod.POST;

@Controller
public class UserController {
    @Autowired
    private UserService userService;

    public ModelAndView modelAndView = new ModelAndView();

    @RequestMapping(value = "/users",method = GET)
    public ModelAndView findUser()throws Exception{
        //调用service方法得到用户列表
        List<User> users = userService.findUser();

        modelAndView.addObject("users",users);
        //设置响应的jsp视图
        modelAndView.setViewName("findUser");

        return modelAndView;
    }

    @RequestMapping(value = "/user/{user_id}",method = GET)
    public ModelAndView getUser(int id,@PathVariable("user_id") String user_id) throws Exception{
        System.out.println("id:"+user_id);
        User user =  userService.findUserById(id);

        modelAndView.addObject("user",user);

        modelAndView.setViewName("getUser");

        return modelAndView;
    }

    @RequestMapping(value = "/user/{id}",method = DELETE)
    public ModelAndView deleteUser(@PathVariable("id") int id) throws Exception{
        int status = userService.deleteUser(id);
        modelAndView.addObject("status",status);
        modelAndView.setViewName("success");
        return modelAndView;
    }

    @RequestMapping(value = "/user/register",method=GET)
    public String Register(){
        return "register";
    }

    @RequestMapping(value = "/user/register",method = POST)
    public ModelAndView addUser(User u) throws Exception{
        int status = userService.addUser(u);
        modelAndView.addObject("status",status);
        modelAndView.setViewName("success");
        return modelAndView;
    }

}​

这里是关于web 服务的api的Controller，最终的结果会通过modelAndView 找到对应名字的。jsp文件，返回到浏览器上，下面就是相关的.jsp文件的代码和截图。

从零开始 java spring+mybatis 搭建项目。

findUser.jsp:

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
  Created by IntelliJ IDEA.
  User: proteen
  Date: //
  Time: 下午:
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title></title>
</head>
<body>
<h1>findUser</h1>
<table>
  <table>
    <c:forEach items="${users}" var="u">
      <tr>
        <td>${u.id}</td>
        <td>${u.name}</td>
        <td>${u.kecheng}</td>
        <td>${u.fenshu}</td>
      </tr>
    </c:forEach>

  </table>
</table>
</body>
</html>

getUser.jsp:

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>

</head>
<body>
    <tr>
        <td>${user.id}</td>
        <td>${user.name}</td>
        <td>${user.kecheng}</td>
        <td>${user.fenshu}</td>
    </tr>
</body>
</html>

register：

<%--
  Created by IntelliJ IDEA.
  User: zhangxingang
  Date: //
  Time: 下午:
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h1>Register</h1>

    <form method="post">
        name: <input type="text" name="name"/><br/>
        kecheng: <input type="text" name="kecheng"/><br/>
        fenshu: <input type="text" name="fenshu"/><br/>
        <input type="submit" value="Reigster"/>
    </form>

</body>
</html>

success.jsp:

<%--
  Created by IntelliJ IDEA.
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<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    ${status}
</body>
</html>

最后是servlet的配置，写在web.xml里

<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/web-app_2.5.xsd"
         version="2.5">

  <display-name>Spring MVC Application</display-name>

  <!--设置spring 配置文件的位置-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:config/applicationContext.xml</param-value>
  </context-param>

  <!--配置spring listener-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>


  <!--解决POST乱码问题-->
  <filter>
    <filter-name>CharacterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>utf-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

  <!--springmvc前端控制器配置-->
  <servlet>
    <servlet-name>movieServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:config/spring/spring-mvc.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>movieServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

</web-app>

这样就实现了一个简单的spring框架的user 增删查的web服务。

之后又补上了测试环境不同数据库资源，例子很简单，就是一个简单的get请求。

从零开始 java spring+mybatis 搭建项目。

controllerTest.java：

package com.java.myspring.test;

import com.java.myspring.mvc.controller.UserController;
import com.java.myspring.mvc.service.UserService;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.web.servlet.MockMvc;
import org.springframework.test.web.servlet.MvcResult;

import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
import static org.springframework.test.web.servlet.setup.MockMvcBuilders.standaloneSetup;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:context.xml","classpath:spring/spring-mvc.xml"})
public class controllerTest {
    private MockMvc mockMvc;

    @Autowired
    private UserService userService;

    private UserController uc = new UserController();

    @Before
    public void setup(){
        uc.setUserService(userService);
    }

    @Test
    public void testUserCtlr() throws Exception{
        //UserController uc = new UserController();
        mockMvc = standaloneSetup(uc).build();
        System.out.println("asdgdsg");
        MvcResult result = mockMvc.perform(get("/users")).andReturn();
        String strJson = result.getResponse().getContentAsString();
        System.out.println(strJson);
    }
}

下面的资源可以从main目录下面复制过来，然后修改jdbc.properties文件中的的数据库配置，配到测试环境，就可以了。

我的是

jdbc.driver=com.mysql.jdbc.Driver

#jdbc.url=jdbc:mysql://set-gh-dba-dba-hulk-test181.corp.sankuai.com:5002/movie_service
#jdbc.username=movie_service
#jdbc.password=movie_service

jdbc.url=jdbc:mysql://:/testsql1 //这里面从testsql 改到testsql1了
jdbc.username=root
jdbc.password=

#connection pool settings
# maxIdle是最大的空闲连接数，这里取值为20，表示即使没有数据库连接时依然可以保持20个空闲的连接，它们不会被清除，随时处于待命状态
# maxActive是最大激活连接数，这里取值为190，表示同时最多有190个数据库连接
jdbc.pool.maxIdle=
jdbc.pool.minIdle=
jdbc.pool.maxActive=
jdbc.pool.maxIdleTime=
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