Spring SimpleJdbcTemplate batchUpdate() example

最新推荐文章于 2020-12-03 23:42:10 发布

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最新推荐文章于 2020-12-03 23:42:10 发布

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文章标签：数据库 java

原文链接：http://www.cnblogs.com/ghgyj/p/4752466.html

本文演示如何在Spring框架中使用SimpleJdbcTemplate类的batchUpdate()方法进行批量数据插入，包括直接执行SQL语句的方式，并通过配置文件实现数据源连接。

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In this tutorial, we show you how to use batchUpdate() in SimpleJdbcTemplate class.

See batchUpdate() example in SimpleJdbcTemplate class.

//insert batch example
public void insertBatch(final List<Customer> customers){
    String sql = "INSERT INTO CUSTOMER " +
        "(CUST_ID, NAME, AGE) VALUES (?, ?, ?)";
            
    List<Object[]> parameters = new ArrayList<Object[]>();
       
    for (Customer cust : customers) {
        parameters.add(new Object[] {cust.getCustId(), 
            cust.getName(), cust.getAge()}
        );
    }
    getSimpleJdbcTemplate().batchUpdate(sql, parameters);        
}

Alternatively, you can execute the SQL directly.

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

Spring’s bean configuration file

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

    <bean id="customerSimpleDAO" 
        class="com.mkyong.customer.dao.impl.SimpleJdbcCustomerDAO">

        <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>

Run it

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 customerSimpleDAO = 
                      (CustomerDAO) context.getBean("customerSimpleDAO");

        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);
        
        customerSimpleDAO.insertBatch(customers);

        String sql = "UPDATE CUSTOMER SET NAME ='BATCHUPDATE'";
        customerSimpleDAO.insertBatchSQL(sql);
      
    }
}

In this example, you are inserted three customers’ records and update all customer’s name in batch.

转载于:https://www.cnblogs.com/ghgyj/p/4752466.html