標籤:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class MySQLConnection {
public static void main(String[] args) {
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
String url = null;
String user = null;
String password = null;
String sql = null;
try {
Class.forName("com.mysql.jdbc.Driver"); //載入mysq驅動
} catch (ClassNotFoundException e) {
System.out.println("驅動載入錯誤");
e.printStackTrace();//列印出錯詳細資料
} try {
url =
"jdbc:mysql://localhost/test?user=root&password=yqs2602555&useUnicode=true&&characterEncoding=gb2312&autoReconnect = true";//簡單寫法:url = "jdbc:myqsl://localhost/test(資料庫名)? user=root(使用者)&password=yqs2602555(密碼)"; user = "root";
password = "yqs2602555";
conn = DriverManager.getConnection(url,user,password);
} catch (SQLException e) {
System.out.println("資料庫連結錯誤");
e.printStackTrace();
}
try {
stmt = conn.createStatement();
sql = "select * from dept";//dept這張表有deptno,deptname和age這三個欄位
rs = stmt.executeQuery(sql);//執行sql語句
while(rs.next()) {
System.out.print(rs.getInt("deptno") + " ");
System.out.print(rs.getString("deptname") + " ");
System.out.println(rs.getInt("age") + " ");
}
} catch (SQLException e) {
System.out.println("資料操作錯誤");
e.printStackTrace();
}//關閉資料庫
try {
if(rs != null) {
rs.close();
rs = null;
}
if(stmt != null) {
stmt.close();
stmt = null;
}
if(conn != null) {
conn.close();
conn = null;
}
} catch(Exception e) {
System.out.println("資料庫關閉錯誤");
e.printStackTrace();
}
}
}運行結果如下:1 yqs 0
2 hello 0
3 yqsshr 0
4 world 0
5 hryspa 0
1 yqs 0
2 hello 0
3 yqsshr 0
4 world 0
5 hryspa 0
1 yqs11 21
1 yqs21 31
1 yqs31 41
1 yqs41 51
一個經典的JDBC串連MySQL的程式