使用MyBatis Generator 搭建Mybatis环境

1. 将MyBatis Generator安装到eclipse中

安装成功后，新建一个web项目，右击src选择new再选择other中可以找到如图所示的内容

代表安装成功

2. 配置环境

点击next

点击Finish后再src文件夹中会出现generatorConfig.xml的文件，双击打开进行配置

<?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 >
  <context id="context1" >
  									
    <jdbcConnection driverClass="数据库驱动" connectionURL="连接字符串" userId="数据库用户名" password="数据库密码" />
    <javaModelGenerator targetPackage="文件生成所在包名" targetProject="文件生成所在的项目名" />
    <sqlMapGenerator targetPackage="文件生成所在包名" targetProject="文件生成所在的项目名" />
    <javaClientGenerator targetPackage="文件生成所在包名" targetProject="文件生成所在的项目名" type="XMLMAPPER" />
    <table schema="数据库名" tableName="数据库表名" >
      <columnOverride column="数据库中字段名" property="属性名" />
    </table>
  </context>
</generatorConfiguration>

可以参考如下配置

<?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="e:\mysql-connector-java-5.1.24-bin.jar"/>
  <context id="context1" >
    <jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://localhost:3305/booksale" userId="root" password="1" />
    <javaModelGenerator targetPackage="sqlng" targetProject="asd" />
    <sqlMapGenerator targetPackage="sqlng" targetProject="asd" />
    <javaClientGenerator targetPackage="sqlng" targetProject="asd" type="XMLMAPPER" />
    <table schema="booksale" tableName="user" >
    <columnOverride column="username" property="username"></columnOverride>
    <columnOverride column="password" property="password"></columnOverride>
    </table>
  </context>
</generatorConfiguration>

配置好后选中该文件，右击

点击即可配置成功,如果出现如下异常

是因为缺少mysql-connector-java-5.1.24-bin.jar文件

将文件拷到某盘路径下，之后在generatorConfig.xml文件中写如下代码，即可解决

之后再重试一次即可创建出如下文件

报错是因为缺少相对应的jar包
将mybatis对应的jar包放入lib文件夹中，即可解决

新建一个mybatis-config.xml的xml文件

<?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>
 <environments default="development">
  <environment id="development">
   <transactionManager type="JDBC" />
   <dataSource type="POOLED">
    <property name="driver" value="数据库驱动" />
    <property name="url" value="连接字符串" />
    <property name="username" value="数据库用户名" />
    <property name="password" value="数据库密码" />
   </dataSource>
  </environment>
 </environments>
 <mappers>
 这里的内容与下图对应
  <mapper resource="sqlmapping/SignonMapper.xml" />
 </mappers>
</configuration>

Mybatis环境就配置完成了

3.进行测试

public class Test {
public static void main(String[] args) throws IOException {
 Signon signon=new Signon();
 signon.setUsername("123321");
 signon.setPassword("1111");
 
 String configFile="mybatis-config.xml";
 InputStream configStream =Resources.getResourceAsStream(configFile);
 SqlSessionFactoryBuilder builder=new SqlSessionFactoryBuilder();
 SqlSessionFactory factory=builder.build(configStream);
 SqlSession session=factory.openSession();
 session.insert("insert",signon);
 session.commit();
 session.close();
}
}

以上完成了Mybatis环境的基本搭建