jdbc连接mysql数据库执行insert语句后获取自增长的主键值

import java.sql.Connection;  
import java.sql.PreparedStatement;  
import java.sql.ResultSet;  
import java.sql.SQLException;  
import java.sql.Statement;  
  
import cn.baokx.db.DatabaseConnection0;  
  
  
public class Test1 {  
    public static void main(String[] args) {  
        Connection conn = new DatabaseConnection0().getConnection();  
        PreparedStatement pst = null;  
        ResultSet rs = null;  
        String sql = "INSERT INTO dz(date,time,s,w,deep,level,location)" +  
                "VALUES('2014-01-01','05:03:44',25.6,122.4,260,6.2,'俄罗斯')";  
        try {  
            pst = conn.prepareStatement(sql,Statement.RETURN_GENERATED_KEYS);  
            pst.executeUpdate();  
            rs = pst.getGeneratedKeys();  
            if(rs.next()){  
                System.out.println(rs.getObject(1));  
            }  
        } catch (SQLException e) {  
            e.printStackTrace();  
        } finally{  
            try {  
                rs.close();  
                pst.close();  
                conn.close();  
            } catch (SQLException e) {  
                // TODO Auto-generated catch block  
                e.printStackTrace();  
            }  
        }  
    }  
}