myatis 学习2

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package com.zxh.customer.bean1;

import Java.util.List;

import com.zxh.customer.bean.Parter;

public class User {

 private Long custId;
 
 private String custName;
 
 private Parter parter;
 
 private List<Parter> parterList;

 public Long getCustId() {
  return custId;
 }

 public void setCustId(Long custId) {
  this.custId = custId;
 }

 public String getCustName() {
  return custName;
 }

 public void setCustName(String custName) {
  this.custName = custName;
 }

 public Parter getParter() {
  return parter;
 }

 public void setParter(Parter parter) {
  this.parter = parter;
 }

 public List<Parter> getParterList() {
  return parterList;
 }

 public void setParterList(List<Parter> parterList) {
  this.parterList = parterList;
 }

 
}

 

 

 

<?xml version="1.0" encoding="UTF-8" ?> 
<!DOCTYPE mapper 
  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" 
  "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.zxh.customer.dao1.IUserDao">

 <select id="selectUserById" parameterType="long" resultType="User1">
  SELECT CUST_ID as "custId", CUST_NAME "custName" FROM CUST WHERE
  CUST_ID = #{id}
 </select>

 <!-- 注意parameterType=int,long,byte这些基本类型 {}里面参数任写, 如果是对象类型必须和属性相同并提供get和set方法
  string也是对像类型 -->
 <!-- like '%${custName}%' 可以写成 like #{custName} 在程序中把%拼接到custName -->
 <select id="selectUsersByName" parameterType="User1" resultType="User1">
  SELECT CUST_ID as "custId", CUST_NAME "custName" FROM CUST WHERE
  CUST_NAME like '%${custName}%'
 </select>

 <insert id="saveUser" parameterType="User1">
  insert into cust(cust_id,
  cust_name) values(seq_cust.nextval, #{custName})
 </insert>

 <!-- 更新 -->
 <update id="updateUser" parameterType="User1">
  update cust set cust_name = #{custName} where cust_id = #{custId}
 </update>

 <!-- 删除 -->
 <delete id="deleteUser" parameterType="int">
  delete from cust where
  cust_id = #{custId}
 </delete>

</mapper> 

 

 

 

 

package com.zxh.customer.dao1;

import java.util.List;

import com.zxh.customer.bean1.User;

public interface IUserDao {

 // 方法名要和SQL映射文件中的id相同 包名+接口名与mapper的namespace相同
 public User selectUserById(Long custId);

 public List<User> selectUsersByName(User user);

 public void saveUser(User user);

 public void updateUser(User user);

 public void deleteUser(Long custId);
}

 

 

 

package com.zxh.customer.util1;

import java.io.Reader;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

public class MybatisUtil {
 
 private static SqlSessionFactory sqlSessionFactory;
 private static Reader reader;

 static {
  try {
   reader = Resources.getResourceAsReader("config1/Configuration.xml");
   sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
  } catch (Exception e) {
   e.printStackTrace();
  }
 }
 
 public static SqlSessionFactory getSessionFactory() {
  
  return sqlSessionFactory;
 }

}

 

 

 

 

 

Configuration.xml

<?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>

 <!-- 属性配置 xml文件中使用 ${} url "/"路径-文件 或 "."-java类文件 -->
 <properties resource="config1/jdbc_config.properties">
  <!-- <property name="driver" value="oracle.jdbc.driver.OracleDriver" />
   <property name="url" value="jdbc:oracle:thin:@172.16.1.241:1521:jtcrm" />
   <property name="username" value="jtorder" /> <property name="password" value="jtorder"
   /> -->
 </properties>

 <!-- 或者 首先读取properties元素内部的子元素的值, 再读取properties配置文件的值 后者覆盖前者 -->
 <!-- <properties resource="config/jdbc.properties"> <property name="driver"
  value="oracle.jdbc.driver.OracleDriver" /> <property name="url" value="jdbc:oracle:thin:@172.16.1.241:1521:jtcrm"
  /> </properties> -->

 <!-- 设置mybatis3 运行时的行为方式 全局设置 -->
 <settings>
  <!-- 设置超时时间，它决定驱动等待一个数据库响应的时间 -->
  <setting name="defaultStatementTimeout" value="60000" />
  <!-- 启用或禁用 缓存 -->
  <setting name="cacheEnabled" value="false" />
  <!-- 启用或禁用延迟加载。当禁用时, 所有关联对象都会即时加载 -->
  <setting name="lazyLoadingEnabled" value="true" />
  <!-- 允许或不允许多种结果集从一个单独 的语句中返回(需要适合的驱动) 不用考虑 -->
  <setting name="multipleResultSetsEnabled" value="true" />
  <!-- 使用列标签代替列名。 不同的驱动在这 方便表现不同 不用考虑 -->
  <setting name="useColumnLabel" value="true" />
  <!-- 允许 JDBC 支持生成的键。 需要适合的 驱动。 如果设置为 true 则这个设置强制 生成的键被使用 -->
  <setting name="useGeneratedKeys" value="false" />
  <!-- 等等 -->
 </settings>

 <!-- 定义类别名，简化xml文件的配置 -->
 <typeAliases>
  <typeAlias type="com.zxh.customer.bean1.User" alias="User1" />
 </typeAliases>

 <environments default="development">
  <environment id="development">
   <transactionManager type="JDBC" />
   <dataSource type="POOLED">
    <property name="driver" value="${driver}" />
    <property name="url" value="${url}" />
    <property name="username" value="${username}" />
    <property name="password" value="${password}" />
    <!-- <property name="driver" value="oracle.jdbc.driver.OracleDriver"
     /> <property name="url" value="jdbc:oracle:thin:@172.16.1.241:1521:jtcrm"
     /> <property name="username" value="jtorder" /> <property name="password"
     value="jtorder" /> -->
   </dataSource>
  </environment>
 </environments>

 <mappers>
  <mapper resource="com/zxh/customer/bean1/User.xml" />
 </mappers>

</configuration>

 

 

 

jdbc_config.properties

driver=oracle.jdbc.driver.OracleDriver
url=jdbc\:oracle\:thin\:@172.16.1.241\:1521\:jtcrm
username=jtorder
password=jtorder

 

 

 

 

package com.zxh.customer.test1;

import java.util.List;

import org.apache.ibatis.session.SqlSession;

import com.zxh.customer.bean1.User;
import com.zxh.customer.dao1.IUserDao;
import com.zxh.customer.util1.MybatisUtil;

//import org.springframework.context.ApplicationContext;
//import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * 面向接口编程
 * @author zhangxiaohong
 *
 */
public class Test {

 public static void main(String[] args) {

  SqlSession session = MybatisUtil.getSessionFactory().openSession();

  try {
   IUserDao userDao = session.getMapper(IUserDao.class);
   User user = new User();
   user.setCustId(611186L);
   user.setCustName("中国好样的的了乐乐");
   
   userDao.deleteUser(611186L);
   session.commit();
   
   System.out.println(Integer.parseInt("011"));
   System.out.println("成功!");
  } finally {
   session.close();
  }
 }

}