Eclipse下配置swt开发环境

来源：本站原创作者：佚名 2008-04-07 出处：pcdog.com

使用sqlserver2000 中的pubs 数据库中的 jobs表为例.

   create procedure showAll
    as
    select * from jobs

    create procedure obtainJob_desc
    @outputParam varchar(20) output,
    @id          int
    as
    select @outputParam = job_desc from jobs where job_id = @id

    create procedure obtainReturn
    as
    declare @ret int
    select @ret = count(*) from jobs
    return @ret

    declare @ret int
    exec @ret = obtainReturn
    print @ret

用来获得连接的函数

   public Connection getConnection()...{
      Connection con = null;
      try ...{
       Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
       con = DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;databasename=pubs","sa","");
      } catch (Exception e) ...{
       e.printStackTrace();
      }
      return con ;
     }

1,调用得到结果集的存储过程

public void getResultSet()...{
            //获得连接
            Connection con = this.getConnection();
            try ...{
                //showAll为存储过程名
                java.sql.CallableStatement cstm = con.prepareCall("{call showAll }");
                ResultSet rs = cstm.executeQuery();
                while(rs.next())...{
                    //这里写逻辑代码。
                    System.out.println(rs.getString(1));
                }
                rs.close();
                con.close();
            } catch (SQLException e) ...{
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

}

2,调用带有输入 ,输出参数的存储过程。

public void getOutParameter(int inParam)...{
String outParam;
Connection con = this.getConnection();

            try ...{
                CallableStatement cstm = con.prepareCall("{call obtainJob_desc (?,?)}");
                cstm.registerOutParameter(1, Types.VARCHAR);
                cstm.setInt(2, inParam);
                cstm.execute();;

                //得到输出参数。
                String outParma = cstm.getString(2);
                System.out.println(outParma);
                cstm.close();
                con.close();

            } catch (SQLException e) ...{
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

}

3,调用带返回值的存储过程。

public void getReturn()...{
            int ret;
            Connection con = this.getConnection();
            try ...{
                CallableStatement cstm = con.prepareCall("{?=call obtainReturn()}");
                cstm.registerOutParameter(1, Types.INTEGER);

                cstm.execute();
                //得到返回值
                 ret = cstm.getInt(1);

                System.out.println(ret);
                cstm.close();
                con.close();

            } catch (SQLException e) ...{
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

}

更多内容请看PCdog.com--Eclipse 开发技术 Eclipse 入门及环境配置 win98使用技巧专题

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