JAVA插入sql代码

插入数据import java.sql.*;/** * @version 2012-02-22 * @author */public class InsertDemo {  public static void main(String[] args) throws SQLException {    Connection conn = null;    Statement stmt = null;    String JDriver="com.microsoft.sqlserver.jdbc.SQLServerDriver";// 
    String connectDB="jdbc:sqlserver://localhost:1433;DatabaseName=JDBCTest";//
    String user="sa";    String pwd="sql";    try {      // 动态导入数据库的驱动       Class.forName(JDriver);      // 获取数据库链接       conn = DriverManager.getConnection(connectDB,user,pwd);      // 创造SQL语句       String sql = "INSERT INTO JDBCTestTable ( user_name, user_password ) VALUES ( 'balabala', '123456' )";      // 执行SQL语句       stmt = conn.createStatement();      stmt.executeUpdate(sql);      System.out.println("插入数据成功");    } catch (Exception e) {        e.printStackTrace();      stmt.close();      conn.close();    }  }}修改数据import java.sql.Connection;import java.sql.DriverManager;import java.sql.SQLException;import java.sql.Statement;public class UpdateDemo {  public static void main(String[] args) throws SQLException {    Connection conn = null;    Statement stmt = null;    try {      // 动态导入数据库的驱动      Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");      // 获取数据库链接      conn = DriverManager.getConnection(          "jdbc:sqlserver://localhost:1433;DatabaseName=JDBCTest",          "sa", "sql");      // 创造SQL语句      String sql = "UPDATE JDBCTestTable SET user_password = '456' WHERE user_name = 'Eric'";      // 执行SQL语句      stmt = conn.createStatement();      stmt.executeUpdate(sql);      System.out.println("更新数据成功");    } catch (Exception e) {      e.printStackTrace();      stmt.close();      conn.close();    }  }}删除数据import java.sql.Connection;import java.sql.DriverManager;import java.sql.Statement;public class DeleteDemo {  public static void main(String[] args){    String JDriver="com.microsoft.sqlserver.jdbc.SQLServerDriver";    String url="jdbc:sqlserver://127.0.0.1:1433;DatabaseName=JDBCTest";    String user="sa";    String password="sql";    try{      Class.forName(JDriver);// 动态导入数据库的驱动      Connection conn=DriverManager.getConnection(url, user, password);// 获取数据库链接       String query="DELETE FROM JDBCTestTable WHERE user_name='Eric'";// 创造SQL语句       Statement stmt=conn.createStatement();// 执行SQL语句      stmt.executeUpdate(query);      System.out.println("删除数据成功");      stmt.close();      conn.close();    }catch(Exception e){      e.printStackTrace();    }  }}查询数据import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.Statement;public class QueryDemo {  public static void main(String[] args){    String JDriver="com.microsoft.sqlserver.jdbc.SQLServerDriver";    String url="jdbc:sqlserver://127.0.0.1:1433;DatabaseName=JDBCTest";    String user="sa";    String password="sql";    try{      Class.forName(JDriver);// 动态导入数据库的驱动      Connection conn=DriverManager.getConnection(url, user, password);// 获取数据库链接       String query="SELECT * FROM JDBCTestTable";// 创造SQL语句       Statement stmt=conn.createStatement();// 执行SQL语句      ResultSet rs=stmt.executeQuery(query);      while(rs.next()){        System.out.println(rs.getString("user_name")+":"+rs.getString(2));        //密码字段的编号从1开始，密码排第二位      }      System.out.println("查询数据成功");      rs.close();      stmt.close();      conn.close();    }catch(Exception e){      e.printStackTrace();    }  }}

原标题：JAVA插入sql代码

关键词：JAVA