JDBC批量插入数据

批量操作的方式一般有两种：事务提交方式和批量处理

1.使用事务提交方式:

先将命令的提交方式设为false，即手动提交conn.setAutoCommit(false);最后在所有命令执行完之后再提交事务conn.commit(）；

private String url = "jdbc:mysql://localhost:3306/test";
    private String user = "root";
    private String password = "123456";
    @Test
    public void Test(){
        Connection conn = null;
        PreparedStatement pstm =null;
        ResultSet rt = null;
        try {
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection(url, user, password);        
            String sql = "INSERT INTO userinfo(uid,uname,uphone,uaddress) VALUES(?,?,?,?)";
            pstm = conn.prepareStatement(sql);
            conn.setAutoCommit(false);
            Long startTime = System.currentTimeMillis();
            Random rand = new Random();
            int a,b,c,d;
            for (int i = 1; i <= 100000; i++) {
                    pstm.setInt(1, i);
                    pstm.setInt(2, i);
                    a = rand.nextInt(10);
                    b = rand.nextInt(10);
                    c = rand.nextInt(10);
                    d = rand.nextInt(10);
                    pstm.setString(3, "188"+a+"88"+b+c+"66"+d);
                    pstm.setString(4, "xxxxxxxxxx_"+"188"+a+"88"+b+c+"66"+d);
                    pstm.executeUpdate();
            }
            conn.commit();
            Long endTime = System.currentTimeMillis();
            System.out.println("OK,时间：" + (endTime - startTime)); 
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException(e);
        }finally{
            if(pstm!=null){
                try {
                    pstm.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                    throw new RuntimeException(e);
                }
            }
            if(conn!=null){
                try {
                    conn.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                    throw new RuntimeException(e);
                }
            }
        }
    }

2.批量处理

批量处理注意一定要5.1.13版本以上的驱动包，

先pstm.addBatch()；再一起pstm.executeBatch();

private String url = "jdbc:mysql://localhost:3306/test01?rewriteBatchedStatements=true";
    private String user = "root";
    private String password = "123456";
    @Test
    public void Test(){
        Connection conn = null;
        PreparedStatement pstm =null;
        ResultSet rt = null;
        try {
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection(url, user, password);        
            String sql = "INSERT INTO userinfo(uid,uname,uphone,uaddress) VALUES(?,?,?,?)";
            pstm = conn.prepareStatement(sql);
            Long startTime = System.currentTimeMillis();
            Random rand = new Random();
            int a,b,c,d;
            for (int i = 1; i <= 100000; i++) {
                    pstm.setInt(1, i);
                    pstm.setInt(2, i);
                    a = rand.nextInt(10);
                    b = rand.nextInt(10);
                    c = rand.nextInt(10);
                    d = rand.nextInt(10);
                    pstm.setString(3, "188"+a+"88"+b+c+"66"+d);
                    pstm.setString(4, "xxxxxxxxxx_"+"188"+a+"88"+b+c+"66"+d);
                    pstm.addBatch();
            }
            pstm.executeBatch();
            Long endTime = System.currentTimeMillis();
            System.out.println("OK,时间：" + (endTime - startTime)); 
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException(e);
        }finally{
            if(pstm!=null){
                try {
                    pstm.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                    throw new RuntimeException(e);
                }
            }
            if(conn!=null){
                try {
                    conn.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                    throw new RuntimeException(e);
                }
            }
        }
    }