zoukankan      html  css  js  c++  java
  • Java简单的数据库连接

    package test.postgre;
    
    import java.sql.Connection;
    import java.sql.DriverManager;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.sql.Statement;
    
    public class SimpleJdbc {
    
        public static void main(String[] args){
         String title = "";
    String name = ""; Connection conn
    = getConn(); String sql = "select * from calendar";
         String sql2 = "select * from calendar where name = ? or title = ? "; Statement stmt
    = null;
         PreparedStatement pstmt = null;
    ResultSet rs
    = null;
         ResultSet rs2 = null;
    try { stmt = conn.createStatement(); rs = stmt.executeQuery(sql);

           pstmt = conn.prepareStatement(sql2);
    pstmt.setString(1,name);
           pstmt.setString(2,title);
    rs2 = pstmt.executeQuery();
    while(rs.next()){ System.out.println(rs.getInt(1)); } } catch (SQLException e) { e.printStackTrace(); } } /** * database line * @return */ public static Connection getConn(){ Connection conn = null; try { Class.forName("org.postgresql.Driver"); String url="jdbc:postgresql://***.**.**.**/test"; try { conn = DriverManager.getConnection(url, "postgres", "postgres"); } catch (SQLException e) { e.printStackTrace(); } } catch (ClassNotFoundException e) { e.printStackTrace(); } return conn; } }
  • 相关阅读:
    javaMap
    javaCollections
    java线程
    mysql插入,删除
    mysql基础(1)
    javaSet,Date
    中青杯数学建模大赛
    javaJDBC
    中秋记事~~项目开发
    太高兴了,今天有人送我吃月饼!
  • 原文地址:https://www.cnblogs.com/pangpanghuan/p/6541583.html
Copyright © 2011-2022 走看看