搭建简单的SpringMVC+Mybatis项目教程

创建maven的web项目

创建项目

next后面自己写

配置pom.xml

   <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.10</version>
      <!-- 表示开发的时候引入，发布的时候不会加载此包 -->
      <scope>test</scope>
    </dependency>
    <!-- spring核心包 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>4.1.0.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>4.1.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-oxm</artifactId>
      <version>4.1.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>4.1.0.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>4.1.0.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>4.1.0.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>4.1.0.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>4.1.0.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>4.1.0.RELEASE</version>
    </dependency>
    <!-- mybatis核心包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.3.0</version>
    </dependency>
    <!-- mybatis/spring包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.2.2</version>
    </dependency>
    <!-- 导入java ee jar 包 -->
    <dependency>
      <groupId>javax</groupId>
      <artifactId>javaee-api</artifactId>
      <version>7.0</version>
    </dependency>
    <!-- 导入Mysql数据库链接jar包 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.30</version>
    </dependency>
    <!-- 导入dbcp的jar包，用来在applicationContext.xml中配置数据库 -->
    <dependency>
      <groupId>commons-dbcp</groupId>
      <artifactId>commons-dbcp</artifactId>
      <version>1.2.2</version>
    </dependency>
    <!-- JSTL标签类 -->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!-- 日志文件管理包 -->
    <!-- log start -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>


    <!-- 格式化对象，方便输出日志 -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.1.41</version>
    </dependency>


    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>1.7.7</version>
    </dependency>

    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-log4j12</artifactId>
      <version>1.7.12</version>
    </dependency>
    <!-- log end -->
    <!-- 映入JSON -->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.5.3</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.5.3</version>
    </dependency>
    <!-- 上传组件包 -->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
    </dependency>
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
    </dependency>
    <dependency>
      <groupId>commons-codec</groupId>
      <artifactId>commons-codec</artifactId>
      <version>1.9</version>
    </dependency>
  </dependencies>

配置web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  
  <servlet>
    <servlet-name>spring-mvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath*:spring-servlet.xml</param-value>
    </init-param>
  </servlet>

  <servlet-mapping>
    <servlet-name>spring-mvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

配置spring-servlet.xml

在resource目录下创建spring-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: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">

    <!-- 引入配置文件 -->
    <bean id="propertyConfigurer"
          class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:*.properties</value>
            </list>
        </property>
    </bean>


    <!--注解自动扫描-->
    <context:component-scan base-package="com.demo" />

    <!-- 启动SpringMVC的注解功能，完成请求和注解POJO的映射 -->
    <bean id="mappingJacksonHttpMessageConverter"
          class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=UTF-8</value>
            </list>
        </property>
    </bean>
    <bean
            class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="mappingJacksonHttpMessageConverter" />   <!-- JSON转换器 -->
            </list>
        </property>
    </bean>

    <bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter">
        <constructor-arg value="UTF-8" index="0"></constructor-arg><!--  避免出现乱码 -->
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=UTF-8</value>
                <value>application/json;charset=UTF-8</value>
            </list>
        </property>
    </bean>



    <!-- 文件下载 -->
    <bean id="multipartResolver"
          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 默认编码 -->
        <property name="defaultEncoding" value="utf-8" />
        <!-- 文件大小最大值 -->
        <property name="maxUploadSize" value="10485760000" />
        <!-- 内存中的最大值 -->
        <property name="maxInMemorySize" value="2048" />
    </bean>


    <import resource="classpath:spring-ds.xml" />

</beans>

数据库连接配置

  1. 配置jdbc.properties
 #jdbc
jdbc.driver=com.mysql.jdbc.Driver
jdbc.username=root
jdbc.password=1234
jdbc.url=jdbc:mysql://127.0.0.1:3306/mydatabase?useUnicode=true&characterEncoding=utf-8

initialSize=0 
maxActive=20 
maxIdle=20 
minIdle=1 
maxWait=60000
  1. 配置spring-ds.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:tx="http://www.springframework.org/schema/tx"
       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">
    <!-- JDBC配置 -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
          destroy-method="close">
        <property name="driverClassName" value="${jdbc.driver}" />
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
        <!-- 初始化连接大小 -->
        <property name="initialSize" value="${initialSize}"></property>
        <!-- 连接池最大数量 -->
        <property name="maxActive" value="${maxActive}"></property>
        <!-- 连接池最大空闲 -->
        <property name="maxIdle" value="${maxIdle}"></property>
        <!-- 连接池最小空闲 -->
        <property name="minIdle" value="${minIdle}"></property>
        <!-- 获取连接最大等待时间 -->
        <property name="maxWait" value="${maxWait}"></property>
    </bean>

    <!-- mybatis 配置 SQLSession模板 -->
    <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate"
          scope="prototype">
        <constructor-arg index="0" ref="sqlSessionFactory" />
    </bean>

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation" value="classpath:mybatis/mybatis-config.xml" />
        <!--扫描mapper文件留个地方-->
        <property name="mapperLocations" >
            <list>
                <value>classpath:mybatis/mapper/**/*.xml</value>
            </list>
        </property>
    </bean>

    <!-- spring与mybatis整合配置，扫描所有dao -->
    <bean id="mybatisMapper" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.demo.dao.**" />
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
    </bean>

    <!--spring 的JDBC模板 -->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource">
        </property>
    </bean>

    <!-- 事务配置 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>
    <tx:annotation-driven transaction-manager="transactionManager" />
</beans>

mybatis配置

在resource目录下创建mybatis目录。然后创建mybatis-config.xml

<?xml version="1.0" encoding="UTF-8" ?>  
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <properties>
        <property name="dialect" value="MYSQL"/>
    </properties>

    <settings>
        <setting name="cacheEnabled" value="false" />
        <setting name="lazyLoadingEnabled" value="true" />
        <setting name="multipleResultSetsEnabled" value="true" />
        <setting name="useColumnLabel" value="true" />
        <setting name="defaultExecutorType" value="SIMPLE" />
        <!-- 默认全局超时都设置成30秒 -->
        <setting name="defaultStatementTimeout" value="30"/>
    </settings>
</configuration>

在resource/mybatis目录下创建mapper目录， mybatis相关mapper文件放在resource/mybatis/mapper目录下。

这里推荐使用mybatis_generator插件生成数据库对应的mybatis的mapper文件和实体类

简单的generator配置文件

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE generatorConfiguration
            PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
            "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
    
    <generatorConfiguration>
    <classPathEntry location="C:\Users\Desktop\mybatis\mysql-connector-java-5.1.26.jar" />  
        <context id="MysqlContext" targetRuntime="MyBatis3" defaultModelType="flat">
    
        <commentGenerator>
        <property name="suppressAllComments" value="true"/>
        <property name="suppressDate" value="true"/>
    </commentGenerator>
            <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                            connectionURL="jdbc:mysql://127.0.0.1:3306/myDatabase"
                            userId="root"
                            password="1234">
            </jdbcConnection>
    
            <javaModelGenerator targetPackage="com.demo.entity" targetProject="java">
                <property name="trimStrings" value="true" />
            </javaModelGenerator>
             
    
            <sqlMapGenerator targetPackage="user"  targetProject="resources/mybatis"/>
            
            <!--生成Dao文件 可以配置 type="XMLMAPPER"生成xml的dao实现  context id="DB2Tables" 修改targetRuntime="MyBatis3"  -->
               <javaClientGenerator type="XMLMAPPER" targetPackage="com.demo.dao" targetProject="java">
                 <property name="enableSubPackages" value="true"/>
             </javaClientGenerator>
    
            
            <table tableName="user" domainObjectName="User">
                <generatedKey column="id" sqlStatement="Mysql" identity="true"/>
            </table>
        </context>
    </generatorConfiguration>

建议：工具生成的文件最好不用动，表字段如果有更新直接覆盖文件，如果需要手写sql，最好把自己新增的sql创建一个新文件 xxxxMapper_extend.xml，然后在里面写，对应的DAO也用一个新的dao继承原来工具创建的DAO。

这里我创建一个user表，用工具生成对应的文件，文件结构如下，UserMapper即DAO

文件结构

然后配置log4j

log4j.rootLogger = DEBUG, Console
log4j.appender.A = org.apache.log4j.ConsoleAppender
log4j.appender.A.Target = System.out
log4j.appender.A.layout = org.apache.log4j.PatternLayout
log4j.appender.A.layout.ConversionPattern = %p %t %c - %m%n



log4j.appender.B = org.apache.log4j.DailyRollingFileAppender
log4j.appender.B.File = logs/log.log
log4j.appender.B.Append = true
log4j.appender.B.Threshold = DEBUG 
log4j.appender.B.layout = org.apache.log4j.PatternLayout
log4j.appender.B.layout.ConversionPattern = %p %t %c - %m%n



log4j.appender.C = org.apache.log4j.DailyRollingFileAppender
log4j.appender.C.File = logs/error.log 
log4j.appender.C.Append = true
log4j.appender.C.Threshold = ERROR 
log4j.appender.C.layout = org.apache.log4j.PatternLayout
log4j.appender.C.layout.ConversionPattern =%p %t %c - %m%n

#Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n

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

创建一个简单的demo

1.创建service接口&实现类

public interface UserService {
     Object doAddUser(User user);
}

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

    public Object doAddUser(User user) {
        userMapper.insertSelective(user);
        return user;
    }
}

2.创建controller

@Controller
@RequestMapping("/user")
public class UserController {
    @Autowired
    private UserService userService;

    @ResponseBody
    @RequestMapping("/addUser")
    public Object addUser(String name){
        User user = new User();
        user.setName(name);
        user = (User) userService.doAddUser(user);
        return user;

    }
}

3.修改默认的index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>test</title>
</head>
<body>
<h2>

    用户名：<input type="text" value="" id="name"> <input type="button" id="add" value="测试添加"></br>
    <span id="result"></span>
</h2>
</body>
<script type="text/javascript" src="/js/jquery-1.10.2.js"></script>

<script type="text/javascript">
    $('#add').click(function () {
        $.ajax({
            url:'/user/addUser',
            type:'post',
            data:{
                name:$('#name').val()
            },
            dataType:'json',
            success:function (data) {
                $('#result').html('添加成功，用户ID：'+data.id);
            }
        })
    })

</script>
</html>

这里我加入了jquery.js ，你们自己下一个加进去。

配置tomcat

进入配置页面
选择Tomcat
配置端口号
配置发布文件
配置发布文件
启动服务

效果

效果

项目已上传至github：https://github.com/StoneKings/Base_web_SM.git

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