MyBatis开发入门

搭建MyBatis框架开发环境

1. 在自己建的的项目建立个lib文件

2. 然后导入包

3.两个jar包部署到项目中和为项目添加测试类库

4.配置数据库

mybatis-config.xml里面的配置：

：连接数据库

数据库另外一种动态配置

条件查询

如何只查询出供应商编码为“HB GYS001”的供应商信息?

环境配置好了，就建立

在src中建立一个包 entity

src

entity

建立供应商的实体

package entity;public class Provider {private String procode;private String proname;private String prodesc;private String procontact;private String prophone;private String proaddress;private String profax;private int createdby;private String creationdate;public String getProcode() {return procode;}public void setProcode(String procode) {this.procode = procode;}public String getProname() {return proname;}public void setProname(String proname) {this.proname = proname;}public String getProdesc() {return prodesc;}public void setProdesc(String prodesc) {this.prodesc = prodesc;}public String getProcontact() {return procontact;}public void setProcontact(String procontact) {this.procontact = procontact;}public String getProphone() {return prophone;}public void setProphone(String prophone) {this.prophone = prophone;}public String getProaddress() {return proaddress;}public void setProaddress(String proaddress) {this.proaddress = proaddress;}public String getProfax() {return profax;}public void setProfax(String profax) {this.profax = profax;}public int getCreatedby() {return createdby;}public void setCreatedby(int createdby) {this.createdby = createdby;}public String getCreationdate() {return creationdate;}public void setCreationdate(String creationdate) {this.creationdate = creationdate;}
}

注意：是在包mapper下建立，ProviderMapper.xml

这是固定的：

resources

mapper

ProviderMapper.xml：

select * from smbms_provider where proCode=#{proCode}  

然后要在：mybatis-config.xml

 
 这里写这个

test

ProviderMapperTest:

import java.io.IOException;
import java.io.InputStream;
import java.util.List;import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;import entity.Provider;public class ProviderMapperTest {@Testpublic void testFindAllUser() throws IOException{//1.加载mybatis核心配置文件InputStream inputStream = Resources.getResourceAsStream("mybatis-config.xml");//2.获取SqlSessionFactory对象SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);//3.得到执行sql的对象SqlSession SqlSession sqlSession = sqlSessionFactory.openSession();//4.执行sql语句List list = sqlSession.selectList("ProviderMapper.findAllProvider","HB_GYS001");//5.处理结果for (Provider smbms_provider: list) {System.out.println("编号："+smbms_provider.getProcode()+"，供应商名："+smbms_provider.getProname()+"主要产品"+smbms_provider.getProdesc()+"姓名"+smbms_provider.getProcontact()+"电话"+smbms_provider.getProphone()+"地址"+smbms_provider.getProaddress()+"Fax:"+smbms_provider.getProfax()+"By:"+smbms_provider.getCreatedby()+"时间"+smbms_provider.getCreationdate());}//6.关闭数据库会话sqlSession.close();}}

查询( proName)“乐摆日用品厂”的联系电话和地址。

src

entity

resources

mapper

test

ProviderMapperTest

查询供应商地址（ proAddress）在北京的供应商名称信息

src

entity

resources

mapper

test

ProviderMapperTest