最近项目中遇到一个问题：导入数据到后台并将数据插入到数据库中，导入的数据量有上万条数据，考虑采用批量插入数据的方式；

结合网上资料，写了个小demo，文章末尾附上demo下载地址

1、新建项目：项目目录结构如下图所示，添加相应的jar包

2、新建数据库表：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、创建AccountInfo实体类：

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、新建接口映射类：AccountInfoMapper.java

package com.oracle.mapper; import java.util.List; import com.oracle.entity.AccountInfo; public interface AccountInfoMapper { /** * 查询所有的数据 * @return */ List<AccountInfo> queryAllAccountInfo(); /** * 批量插入数据 * * @param accountInfoList * @return */ int batchInsertAccountInfo(List<AccountInfo> accountInfoList); }

5、创建mybatis配置文件：mybatis-configuration.xml

<"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、创建接口映射配置文件：AccountInfoMapper.xml

Oracle的批量插入数据库跟MySQL不一样，

MySQL：

复制代码 代码如下:INSERT INTO ACCOUNT_INFO(ID, USERNAME,PASSWORD,GENDER, EMAIL,CREATE_DATE)values(,,,,,,)(,,,,,,,)

Oracle：

复制代码 代码如下:INSERT INTO ACCOUNT_INFO(ID, USERNAME,PASSWORD,GENDER, EMAIL,CREATE_DATE) (select 1,,,,,, from dual union all select 1,,,,,, from dual)

<"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"><> <> <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> <> <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、编写测试类：

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("zhangsanfeng@wudang.com"); 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("zhouzhiruo@emei.com"); 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("zhaomin@yuan.com"); account.setCreateDate(new Date(System.currentTimeMillis())); result.add(account); return result; } }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持查字典教程网。