java操作mysql

这里列出最基本的增删改查操作:

import Conn.Conn; //连接类我已经写好了,直接导入 见：http://blog.csdn.net/wangzhuo0978/article/details/53019688
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

public class Operation {
private Connection conn;
private PreparedStatement pstm = null; //预编译结果;
// 增删改查;
public void ConnectSQL(){
try{
conn = Conn.getConnection();
}catch(Exception e){
System.out.println("连接失败");
}
}
public boolean insertSQL(String sql, String... ob){ // sql为传入的基本sql语句, pstm.setObject(), 动态修改参数;
try{
pstm = conn.prepareStatement(sql);
for(int i = 0; i < ob.length; ++i){
pstm.setObject(i+1, ob[i]);
}
int num = pstm.executeUpdate();
System.out.println("插入数据成功, 成功插入" + num + "数据");
return true;
}catch (Exception e){
System.out.println("插入数据时出错");
}
return false;
public boolean deleteSQL(String sql){
try{
pstm = conn.prepareStatement(sql);
int num = pstm.executeUpdate();
System.out.println("删除数据成功, 成功删除" + num + "数据");
return true;
}catch(Exception e){
System.out.println("删除数据时出错");
}
return false;
}
public boolean updateSQL(String sql){
try{
pstm = conn.prepareStatement(sql);
int num = pstm.executeUpdate();
System.out.println("修改数据成功, 成功修改" + num + "数据");
return true;
}catch(Exception e){
System.out.println("修改数据时出错");
}
return false;
}
public ResultSet selectSQL(String sql){
ResultSet rs = null;
try{
pstm = conn.prepareStatement(sql);
rs = pstm.executeQuery();
}catch(Exception e){
System.out.println("查询数据时出错");
}
return rs;
}
}