Java中向数据库中插入记录并返回该记录的id值

用户注册是向表中插入用户的基本信息并返回该记录的id值

public long regist(Cuser cuser) {
  Connection con=Connection.getconnection();//Cconnection是的到数据库连接的类
  PreparedStatement ps=null;
  ResultSet rs=null;
  long id = 0;//存放数据库返回的用户注册过后的id
  try {
   ps=con.prepareStatement(Csqlutil.REGIST,Statement.RETURN_GENERATED_KEYS);//将Csqlutil.REGIST改为sql语句

   ps.setString(1, cuser.getUsername());
   ps.setString(2, cuser.getName());
   ps.setString(3, cuser.getPwd());
   ps.setInt(4, cuser.getAge());
   ps.setString(5, cuser.getSex());
   ps.setString(6, cuser.getPhone());
   ps.executeUpdate();
   rs=ps.getGeneratedKeys();//这一句代码就是得到插入的记录的id
   while(rs.next()){
    id=rs.getLong(1);
   }
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }finally{
   try {
    rs.close();
    ps.close();
    con.close();
   } catch (SQLException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
  return id;
 }

2. 使用jdbc 3.0 提供的getGeneratedKeys(推荐使用)

Statement stmt = conn.createStatement();  
stmt.executeQuery("INSERT INTO table_name(...) values(...)",Statement.RETURN_GENERATED_KEYS);  
ResultSet rs = stmt.getGeneratedKeys();  
if(rs.next()){  
    this.setId(rs.getInt(1));  
    }