使用java连接Mysql 和Using JDBC Statement Objects to Execute SQL

使用java连接Mysql 和Using JDBC Statement Objects to Execute SQL

首先引入mysql-connector-javaXXXXX.jar的包：

项目test右键 Build Path> Add External Achives.....>选择mysql-connector-javaXXXXX.jar（已经下载）

package test;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

// Notice, do not import com.mysql.jdbc.*
// or you will have problems!

public class LoadDriver {
public static void main(String[] args) {
Connection conn = null;
Statement stmt= null;
ResultSet rs = null;

try {
// The newInstance() call is a work around for some
// broken Java implementations

Class.forName("com.mysql.jdbc.Driver").newInstance();
} catch (Exception ex) {
ex.printStackTrace();
}

try {
conn =
DriverManager.getConnection("jdbc:mysql://localhost/mydatabase?" +
"user=root&password=root");
stmt= conn.createStatement();
rs = stmt.executeQuery("select * from dept");
while(rs.next()){
System.out.println(rs.getString("name"));
}
// Do something with the Connection
} catch (SQLException ex) {
// handle any errors
System.out.println("SQLException: " + ex.getMessage());
System.out.println("SQLState: " + ex.getSQLState());
System.out.println("VendorError: " + ex.getErrorCode());
}finally{
try{
if(rs != null){
rs.close();
rs = null;
}
if(stmt != null){
stmt.close();
stmt = null;
}
if(conn != null){
conn.close();
conn = null;
}

} catch (SQLException e){
e.printStackTrace();
}
}
}
}