开发笔记:MyBatis学习之逆向工程

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







mysql.jdbc.Driver"
cOnnectionURL="jdbc:mysql://localhost:3306/mybatis" userId="root"
password="mysql">







targetProject=".\\src">






targetProject=".\\src">




targetPackage="cn.itcast.mybatis.mapper"
targetProject=".\\src">

import java.io.File;
import java.io.IOException;
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.exception.XMLParserException;
import org.mybatis.generator.internal.DefaultShellCallback;
public class GeneratorSqlmap {
public void generator() throws Exception{
List warnings = new ArrayList();
boolean overwrite = true;
//指定 逆向工程配置文件
File cOnfigFile= new File("generatorConfig.xml"); //逆向工程配置文件地址.
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() throws Exception {
//初始化spring的容器
applicatiOnContext=
new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
itemsMapper= (ItemsMapper) applicationContext.getBean("itemsMapper");
}
//根据主键删除
@Test
public void testDeleteByPrimaryKey() {
//根据主键删除
// itemsMapper.deleteByPrimaryKey(id);
//将符合条件的记录删除，参考下边的查询自定义条件example
// itemsMapper.deleteByExample(example);
}
//插入商品
@Test
public void testInsert() {
// itemsMapper.insert(record);
}
//自定义条件查询
@Test
public void testSelectByExample() {
ItemsExample itemsExample = new ItemsExample();
ItemsExample.Criteria criteria = itemsExample.createCriteria();
//使用criteria自定义查询条件
criteria.andNameEqualTo("水杯");
criteria.andIdEqualTo(1);

List list = itemsMapper.selectByExample(itemsExample);
System.out.println(list);
}
//根据主键查询
@Test
public void testSelectByPrimaryKey() {
Items items = itemsMapper.selectByPrimaryKey(1);
System.out.println(items);
}
//更新
@Test
public void testUpdateByPrimaryKey() {
//根据主键更新，不管更新对象的属性是否为空全部更新
// itemsMapper.updateByPrimaryKey(record)
//根据主键更新，只更新不为空的属性，参考mapper.xml中的代码
// itemsMapper.updateByPrimaryKeySelective(record)
}