Jdbc操作数据库  改

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

 

//预处理方式

public class preperSTest {

 

        public static void main(String[] args) throws SQLException {

                  update("双鱼座", "《菜根谭》");

        }

 

        private static void update (String name, String book) throwsSQLException {

                  Connection conn = null;

                  PreparedStatement ps = null;

                  ResultSet rs = null;

 

                  try {

                           // 创建连接

                           conn = JdbcUtils.getConnection();

 

                           String sql = " update student set name = ?,book = ? where id =2";

 

                           ps = conn.prepareStatement(sql);

                           // 代替 占位符

                           ps.setString(1, name);

                           ps.setString(2, book);

 

                           int i = ps.executeUpdate();

                           System.out.println(i);

 

                  

                  } finally {

                           JdbcUtils.release(rs, ps, conn);

                  }

 

        }

}

 

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