步骤2:创建批处理语句 // 创建批处理语句Stringsql="INSERT INTO table_name (column1, column2) VALUES (?, ?)";PreparedStatementpreparedStatement=connection.prepareStatement(sql); 1. 2. 3. 步骤3:设置批量更新大小 // 设置批量更新大小connection.setAutoCommit(false);finalintbatchSize=1000;intcount=0; ...
publicvoidbatchInsertWithTransaction(List<User>userList){Stringsql="INSERT INTO user (id, name, age) VALUES (?, ?, ?)";Connectionconn=null;PreparedStatementps=null;try{conn=dataSource.getConnection();conn.setAutoCommit(false);ps=conn.prepareStatement(sql);for(Useruser:userList){ps.setInt(1,u...
1packagecom.ayang.jdbc;23importjava.sql.*;456publicclassTestBatch {78//为看清逻辑关系,throws出去9publicstaticvoidmain(String[] args)throwsException {10Class.forName("oracle.jdbc.driver.OracleDriver");11Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@127.0.0.1:1521:ORCL","scott",...
Creating queries like this dynamically is very prone to SQL injection. And also the insert query has to be compiled each time. Why not to usePreparedStatementinstead of simpleStatement. Yes, that can be the solution. Check out the below SQL Injection Safe Batch. SQL Injection Safe Batch Consid...
Smart Insert: Batch within Batch This is a simplest solution. Consider a batch size like 1000 and insert queries in the batches of 1000 queries at a time. String sql = "insert into employee (name, city, phone) values (?, ?, ?)";Connection connection = new getConnection();PreparedStatemen...
注意，MyBatis不会为foreach循环执行多条insert语句，而是将所有需要插入的数据一起封装成一个大的SQL语句，然后通过JDBC执行一次性提交，从而达到批量插入的效果。二、使用batch元素批量插入 MyBatis还提供了第二种方式进行批量插入，即使用batch元素进行批量操作。示例如下：<insert id="batchInsert" parameterType="jav...
注意,MyBatis不会为foreach循环执行多条insert语句,而是将所有需要插入的数据一起封装成一个大的SQL语句,然后通过JDBC执行一次性提交,从而达到批量插入的效果。 二、使用batch元素批量插入 MyBatis还提供了第二种方式进行批量插入,即使用batch元素进行批量操作。示例如下: ...
&& this.connection.getRewriteBatchedStatements()) { if (canRewriteAsMultiValueInsertAtSqlLevel()) { return executeBatchedInserts(batchTimeout); //执行路径之一 } if (this.connection.versionMeetsMinimum(4, 1, 0) && !this.batchHasPlainStatements ...
import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.SQLException; public class BatchInsertExample { public static void main(String[] args) { String url = "jdbc:mysql://localhost:3306/mydatabase"; String user = "username"; String password...
spring.datasource.url=jdbc:mysql:///batch_insert?serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true 大家需要注意,这个数据库连接 URL 地址中多了一个参数rewriteBatchedStatements,这是核心。 MySQL JDBC 驱动在默认情况下会无视executeBatch()语句,把我们期望批量执行的一组sql语句拆散,一条一条地发给My...