android開發 MyEclipse下測試鏈接MySQL數據庫

一、首先要加載MySQL驅動包。java

步驟:右擊項目找到build path->configure build path->libraries——>add External JARs添加驅動包mysql

 

二、寫測試類:TestCon.javaweb

(在此以前,首先必須sql

  1.在本身的電腦上Mysql下肯定帳戶是"root",密碼是"123456";數據庫

  2.進入帳戶,建立數據庫cui;測試

  3.在數據庫cui下面,建立表test1 包含_id(int 類型自動增長) username(String 類型)、password(String 類型);ui

  4.在表中插入數據,以便顯示url

spa

 1 package com.test.an;
 2 
 3 import java.sql.Connection;
 4 import java.sql.DriverManager;
 5 import java.sql.PreparedStatement;
 6 import java.sql.ResultSet;
 7 import java.sql.SQLException;
 8 
 9 
10 public class TestCon1{
11     public static void main(String[] args) 
12     {
13         Connection con = null;
14         String sql;
15         PreparedStatement pre;
16         ResultSet rs;
17         
18         try {
19             String driver="com.mysql.jdbc.Driver";
20             Class.forName(driver);
21             
22             String url="jdbc:mysql://localhost:3306/cui?useUnicode=true&characterEncoding=latin1";//utf-8也行
23             con = DriverManager.getConnection(url, "root", "123456");
24             
25             sql = "select _id,username,password from test1" ;
26             pre = con.prepareStatement(sql);
27             
28             rs = pre.executeQuery(); 
29             while(rs.next()){
30                 int id = rs.getInt(1);
31                 String username = rs.getString(2);
32                 String password = rs.getString(3);
33                 
34                 System.out.println("id="+id+";username="+username+";password="+password);
35             }
36             con.close();
37         } catch (SQLException e) {
38             e.printStackTrace();
39         } catch (ClassNotFoundException e) {
40             e.printStackTrace();
41         }
42         
43     }
44 
45 }


  用力測試運行結果:code

  id=1;username=ccc;password=123456  id=2;username=xxx;password=654321  id=3;username=ddd;password=123456  id=4;username=ddf÷;password=yyt  id=5;username=cuixiaodong;password=cxd  id=6;username=vv;password=cxd

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