Java完成mybatis批量拔出數據到Oracle

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比來項目中碰到一個成績：導入數據到後台並將數據拔出到數據庫中，導入的數據量有上萬條數據，斟酌采取批量拔出數據的方法；
 聯合網上材料，寫了個小demo，文章末尾附上demo下載地址 

1、新建項目：項目目次構造以下圖所示，添加響應的jar包

2、新建數據庫表：ACCOUNT_INFO

CREATE TABLE ACCOUNT_INFO (
 "ID" NUMBER(12) NOT NULL ,
 "USERNAME" VARCHAR2(64 BYTE) NULL ,
 "PASSWORD" VARCHAR2(64 BYTE) NULL ,
 "GENDER" CHAR(1 BYTE) NULL ,
 "EMAIL" VARCHAR2(64 BYTE) NULL ,
 "CREATE_DATE" DATE NULL 
)

3、創立AccountInfo實體類：

package com.oracle.entity;

import java.sql.Date;

public class AccountInfo {
 private Long id;
 private String userName;
 private String password;
 private String gender;
 private String email;
 private Date createDate;

 public Long getId() {
 return id;
 }

 public void setId(Long id) {
 this.id = id;
 }

 public String getUserName() {
 return userName;
 }

 public void setUserName(String userName) {
 this.userName = userName;
 }

 public String getPassword() {
 return password;
 }

 public void setPassword(String password) {
 this.password = password;
 }

 public String getGender() {
 return gender;
 }

 public void setGender(String gender) {
 this.gender = gender;
 }

 public String getEmail() {
 return email;
 }

 public void setEmail(String email) {
 this.email = email;
 }

 public Date getCreateDate() {
 return createDate;
 }

 public void setCreateDate(Date createDate) {
 this.createDate = createDate;
 }

 @Override
 public String toString() {
 return "AccountInfo [id=" + id + ", userName=" + userName
 + ", password=" + password + ", gender=" + gender + ", email="
 + email + ", createDate=" + createDate + "]";
 }

}

4、新建接口映照類：AccountInfoMapper.java

package com.oracle.mapper;

import java.util.List;

import com.oracle.entity.AccountInfo;

public interface AccountInfoMapper {
 /**
 * 查詢一切的數據
 * @return
 */
 List<AccountInfo> queryAllAccountInfo();
 
 /**
 * 批量拔出數據
 * 
 * @param accountInfoList
 * @return
 */
 int batchInsertAccountInfo(List<AccountInfo> accountInfoList);
}

5、創立mybatis設置裝備擺設文件：mybatis-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>
 <environments default="development">
 <environment id="development">
 <transactionManager type="JDBC" />
 <dataSource type="POOLED">
 <property name="driver" value="oracle.jdbc.driver.OracleDriver" />
 <property name="url" value="jdbc:oracle:thin:@localhost:1521:orcl" />
 <property name="username" value="xxx" />
 <property name="password" value="xxx" />
 </dataSource>
 </environment>
 </environments>
 <mappers>
 <mapper resource="config/AccountInfoMapper.xml" />
 </mappers>
</configuration>

6、創立接口映照設置裝備擺設文件：AccountInfoMapper.xml
 Oracle的批量拔出數據庫跟MySQL紛歧樣，
 MySQL：
   INSERT INTO ACCOUNT_INFO(ID, USERNAME,PASSWORD,GENDER, EMAIL,CREATE_DATE)values(,,,,,,)(,,,,,,,)
Oracle：
  INSERT INTO ACCOUNT_INFO(ID, USERNAME,PASSWORD,GENDER, EMAIL,CREATE_DATE) (select 1,,,,,, from dual union all select 1,,,,,, from dual)  

<?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.oracle.mapper.AccountInfoMapper"><!-- 接口的全類名 -->
 <!-- type:實體類的全類名 -->
 <resultMap id="BaseResultMap" type="com.oracle.entity.AccountInfo">
 <id column="ID" property="id" jdbcType="DECIMAL" />
 <result column="USERNAME" property="userName" jdbcType="VARCHAR" />
 <result column="PASSWORD" property="password" jdbcType="VARCHAR" />
 <result column="GENDER" property="gender" jdbcType="CHAR" />
 <result column="EMAIL" property="email" jdbcType="VARCHAR" />
 <result column="CREATE_DATE" property="createDate" jdbcType="DATE" />
 </resultMap>
 <!-- id 跟接口中的辦法稱號堅持分歧 -->
 <select id="queryAllAccountInfo" resultMap="BaseResultMap">
 select ID,
 USERNAME,PASSWORD,
 GENDER, EMAIL, CREATE_DATE from ACCOUNT_INFO
 </select>
 <insert id="batchInsertAccountInfo" parameterType="java.util.List">
 INSERT INTO ACCOUNT_INFO(ID, USERNAME,PASSWORD,GENDER, EMAIL,CREATE_DATE)
 (
 <foreach collection="list" index="" item="accountInfo"
 separator="union all">
 select
 #{accountInfo.id},
 #{accountInfo.userName},
 #{accountInfo.password},
 #{accountInfo.gender},
 #{accountInfo.email},
 #{accountInfo.createDate}
 from dual
 </foreach>
 )
 </insert>
</mapper>

7、編寫測試類：

package com.oracle.test;

import java.io.InputStream;
import java.sql.Date;
import java.util.ArrayList;
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 com.oracle.entity.AccountInfo;
import com.oracle.mapper.AccountInfoMapper;

public class MybatisTest {
 public static void main(String[] args) throws Exception {
 String resource = "config/mybatis-configuration.xml";
 InputStream inputStream = Resources.getResourceAsStream(resource);
 SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder()
 .build(inputStream);
 SqlSession session = sessionFactory.openSession();
 AccountInfoMapper mapper = session.getMapper(AccountInfoMapper.class);
 List<AccountInfo> accountInfoList = mapper.queryAllAccountInfo();
 if (accountInfoList == null) {
 System.out.println("The result is null.");
 } else {
 for (AccountInfo personInfo : accountInfoList) {
 System.out.println(personInfo);
 }
 }
 mapper.batchInsertAccountInfo(generateData());
 session.commit();
 }
 
 static List<AccountInfo> generateData(){
 List<AccountInfo> result = new ArrayList<AccountInfo>();
 AccountInfo account = new AccountInfo();
 account.setId(3L);
 account.setUserName("zhangsanfeng");
 account.setPassword("123456");
 account.setGender("1");
 account.setEmail("[email protected]");
 account.setCreateDate(new Date(System.currentTimeMillis()));
 result.add(account);
 
 account = new AccountInfo();
 account.setId(4L);
 account.setUserName("zhouzhiruo");
 account.setPassword("zhangwuji");
 account.setGender("0");
 account.setEmail("[email protected]");
 account.setCreateDate(new Date(System.currentTimeMillis()));
 result.add(account);
 
 account = new AccountInfo();
 account.setId(5L);
 account.setUserName("zhaomin");
 account.setPassword("zhangwuji");
 account.setGender("0");
 account.setEmail("[email protected]");
 account.setCreateDate(new Date(System.currentTimeMillis()));
 result.add(account);
 return result;
 }
}

源碼下載：http://xiazai.jb51.net/201606/yuanma/java-oracle(jb51.net).rar

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