Spring JdbcTemplate.batchUpdate 例子

最近再看开源项目阿里巴巴的数据库同步项目Otter https://github.com/alibaba/otter的时候，看到里面很多时候都使用了JdbcTemplate 来对数据进行相应的数据操作。

这里写一个使用批操作的batchUpdate()的例子，来自spring-jdbctemplate-batchupdate-example

需要使用批操作来操作数据库的数据。

第一种用法：

//insert batch example public void insertBatch(final List<Customer> customers){
       String sql = "INSERT INTO CUSTOMER " +"(CUST_ID, NAME, AGE) VALUES (?, ?, ?)";getJdbcTemplate().batchUpdate(sql, new BatchPreparedStatementSetter() {
       @Overridepublic void setValues(PreparedStatement ps, int i) throws SQLException {
       Customer customer = customers.get(i);ps.setLong(1, customer.getCustId());ps.setString(2, customer.getName());ps.setInt(3, customer.getAge() );}@Overridepublic int getBatchSize() {
       return customers.size();}}); }

第二种用法（当然你可以直接运行sql语句）：

//insert batch example with SQL public void insertBatchSQL(final String sql){
       getJdbcTemplate().batchUpdate(new String[]{
       sql});} 

<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-2.5.xsd"> <bean id="customerDAO" class="com.mkyong.customer.dao.impl.JdbcCustomerDAO"><property name="dataSource" ref="dataSource" /></bean><bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"><property name="driverClassName" value="com.mysql.jdbc.Driver" /><property name="url" value="jdbc:mysql://localhost:3306/mkyongjava" /><property name="username" value="root" /><property name="password" value="password" /></bean></beans>

运行：

package com.mkyong.common;import java.util.ArrayList; import java.util.List;import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.mkyong.customer.dao.CustomerDAO; import com.mkyong.customer.model.Customer;public class App {
       public static void main( String[] args ){
       ApplicationContext context = new ClassPathXmlApplicationContext("Spring-Customer.xml");CustomerDAO customerDAO = (CustomerDAO) context.getBean("customerDAO");Customer customer1 = new Customer(1, "mkyong1",21);Customer customer3 = new Customer(2, "mkyong2",22);Customer customer2 = new Customer(3, "mkyong3",23);List<Customer>customers = new ArrayList<Customer>();customers.add(customer1);customers.add(customer2);customers.add(customer3);customerDAO.insertBatch(customers);String sql = "UPDATE CUSTOMER SET NAME ='BATCHUPDATE'";customerDAO.insertBatchSQL(sql);} }