<?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="testTables" targetRuntime="MyBatis3">
        <commentGenerator>
            <!-- 是否去除自動生成的注釋 true：是 ： false:否 -->
            <property name="suppressAllComments" value="true" />
        </commentGenerator>
        <!--數據庫連接的信息：驅動類、連接地址、用戶名、密碼 -->
        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
            connectionURL="jdbc:mysql://localhost:3306/mybatisdemo" userId="root"
            password="">
        </jdbcConnection>
        <!-- <jdbcConnection driverClass="oracle.jdbc.OracleDriver"
            connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:yycg" 
            userId="yycg"
            password="yycg">
        </jdbcConnection> -->

        <!-- 默認false，把JDBC DECIMAL 和 NUMERIC 類型解析為 Integer，為 true時把JDBC DECIMAL 和 
            NUMERIC 類型解析為java.math.BigDecimal -->
        <javaTypeResolver>
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <!-- targetProject:生成PO類的位置 -->
        <javaModelGenerator targetPackage="joanna.yan.po"
            targetProject=".\src">
            <!-- enableSubPackages:是否讓schema作為包的后綴 -->
            <property name="enableSubPackages" value="false" />
            <!-- 從數據庫返回的值被清理前后的空格 -->
            <property name="trimStrings" value="true" />
        </javaModelGenerator>
        <!-- targetProject:mapper映射文件生成的位置 -->
        <sqlMapGenerator targetPackage="joanna.yan.mapper" 
            targetProject=".\src">
            <!-- enableSubPackages:是否讓schema作為包的后綴 -->
            <property name="enableSubPackages" value="false" />
        </sqlMapGenerator>
        <!-- targetPackage：mapper接口生成的位置 -->
        <javaClientGenerator type="XMLMAPPER"
            targetPackage="joanna.yan.mapper" 
            targetProject=".\src">
            <!-- enableSubPackages:是否讓schema作為包的后綴 -->
            <p    roperty name="enableSubPackages" value="false" />
        </javaClientGenerator>
        <!-- 指定數據庫表 -->
        <table tableName="items"></table>
        <table tableName="orders"></table>
        <table tableName="orderdetail"></table>
        <table tableName="user"></table>
        <!-- <table schema="" tableName="sys_user"></table>
        <table schema="" tableName="sys_role"></table>
        <table schema="" tableName="sys_permission"></table>
        <table schema="" tableName="sys_user_role"></table>
        <table schema="" tableName="sys_role_permission"></table> -->
        
        <!-- 有些表的字段需要指定java類型
         <table schema="" tableName="">
            <columnOverride column="" javaType="" />
        </table> -->
    </context>
</generatorConfiguration>

public class GeneratorSqlmap {

    public void generator() throws Exception{
        List<String> warnings = new ArrayList<String>();
        boolean overwrite = true;
        //指定 逆向工程配置文件
        File configFile = new File("generatorConfig.xml"); 
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(configFile);
        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config,
                callback, warnings);
        myBatisGenerator.generate(null);

    } 
    public static void main(String[] args) throws Exception {
        try {
            GeneratorSqlmap generatorSqlmap = new GeneratorSqlmap();
            generatorSqlmap.generator();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

public class ItemsMapperTest {
    private ApplicationContext applicationContext;
    private ItemsMapper itemsMapper;
    
    @Before
    public void setUp(){
        applicationContext=new ClassPathXmlApplicationContext("classpath:spring/applicationContext.xml");
        itemsMapper=(ItemsMapper) applicationContext.getBean("itemsMapper");
    }
    
    @Test
    public void testInsert() {
        Items item=new Items();
        item.setName("手機");
        item.setPrice(999f);
　　　　 item.setCreatetime(new Date());
        itemsMapper.insert(item);
    }

    //自定義條件查詢
    @Test
    public void testSelectByExample() {
        ItemsExample itemsExample=new ItemsExample();
        //通過criteria構造查詢條件
        ItemsExample.Criteria criteria=itemsExample.createCriteria();
        criteria.andNameEqualTo("筆記本3");
        //可能返回多條記錄
        List<Items> list=itemsMapper.selectByExample(itemsExample);
        System.out.println(list);
    }

    //根據主鍵查詢
    @Test
    public void testSelectByPrimaryKey() {
        Items items=itemsMapper.selectByPrimaryKey(1);
        System.out.println(items);
    }

    @Test
    public void testUpdateByPrimaryKey() {
        //對所有字段進行更新，需要先查詢出來再更新
        Items items=itemsMapper.selectByPrimaryKey(1);
        items.setName("水杯");
        itemsMapper.updateByPrimaryKey(items);
        //如果傳入字段不為空才更新，在批量更新中使用此方法，不需要先查詢再更新
        itemsMapper.updateByPrimaryKeySelective(items);
    }

}