<?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(dòng)生成的注釋 true：是 ： false:否 -->
<property name="suppressAllComments" value="true" />
</commentGenerator>
<!--數(shù)據(jù)庫(kù)連接的信息：驅(qū)動(dòng)類、連接地址、用戶名、密碼 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver"
connectionURL="jdbc:mysql://localhost:3306/mybatis" userId="root"
password="1234">
</jdbcConnection>
<!-- <jdbcConnection driverClass="oracle.jdbc.OracleDriver"
connectionURL="jdbc:oracle:thin:@127.0.0.1:1521:yycg" 
userId="yycg"
password="yycg">
</jdbcConnection> -->
<!-- 默認(rèn)false，把JDBC DECIMAL 和 NUMERIC 類型解析為 Integer，為 true時(shí)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="cn.edu.hpu.ssm.po"
targetProject=".\src">
<!-- enableSubPackages:是否讓schema作為包的后綴 -->
<property name="enableSubPackages" value="false" />
<!-- 從數(shù)據(jù)庫(kù)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="cn.edu.hpu.ssm.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="cn.edu.hpu.ssm.mapper" 
targetProject=".\src">
<!-- enableSubPackages:是否讓schema作為包的后綴 -->
<property name="enableSubPackages" value="false" />
</javaClientGenerator>
<!-- 指定數(shù)據(jù)庫(kù)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>

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import org.mybatis.generator.api.MyBatisGenerator;
import org.mybatis.generator.config.Configuration;
import org.mybatis.generator.config.xml.ConfigurationParser;
import org.mybatis.generator.internal.DefaultShellCallback;
public class GeneratorSqlmap {
public void generator() throws Exception{
List<String> warnings = new ArrayList<String>();
boolean overwrite = true;
//加載配置文件
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();
}
}
}

package cn.edu.hpu.ssm.test;
import static org.junit.Assert.fail;
import java.util.Date;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import cn.edu.hpu.ssm.mapper.ItemsMapper;
import cn.edu.hpu.ssm.po.Items;
import cn.edu.hpu.ssm.po.ItemsExample;
public class ItemsMapperTest {
private ApplicationContext applicationContext;
private ItemsMapper itemsMapper;
//注解Before是在執(zhí)行本類所有測(cè)試方法之前先調(diào)用這個(gè)方法
@Before
public void setup() throws Exception{
applicationContext=new ClassPathXmlApplicationContext("classpath:spring/applicationContext.xml");
itemsMapper=(ItemsMapper)applicationContext.getBean("itemsMapper");
}
//根據(jù)主鍵刪除
@Test
public void testDeleteByPrimaryKey() {
fail("Not yet implemented");
}
//插入
@Test
public void testInsert() {
Items items=new Items();
items.setName("iPhone-5S");
items.setPrice(3999f);
items.setDetail("正品行貨");
items.setPic("sdasd.jpg");
items.setCreatetime(new Date());
itemsMapper.insert(items);
}
//自定義條件來查詢
@Test
public void testSelectByExample() {
ItemsExample itemsExample=new ItemsExample();
//通過Criteria構(gòu)造查詢條件
ItemsExample.Criteria criteria=itemsExample.createCriteria();
criteria.andNameEqualTo("電視機(jī)");
//可能返回多條記錄
List<Items> list=itemsMapper.selectByExample(itemsExample);
for (int i = 0; i < list.size(); i++) {
Items it=list.get(i);
System.out.println(it.getId()+":"+it.getName());
}
}
//根據(jù)主鍵來查詢
@Test
public void testSelectByPrimaryKey() {
Items items=itemsMapper.selectByPrimaryKey(1);
System.out.println(items.getName());
}
//更新數(shù)據(jù)
@Test
public void testUpdateByPrimaryKey() {
//對(duì)所有字段進(jìn)行更新，需要先查詢出來再更新
Items items = itemsMapper.selectByPrimaryKey(1); 
items.setName("iPhone"); 
itemsMapper.updateByPrimaryKey(items);
//如果傳入字段不空為才更新，在批量更新中使用此方法，不需要先查詢?cè)俑?
//itemsMapper.updateByPrimaryKeySelective(record);
}
}