Question

我试图获取结果集的结果，我将第二个参数注册为INTEGER。根据我的阅读，我应该先使用结果集检索对象。

代码

try (Connection myConn = DBUtil.connect();
             CallableStatement myFirstCs = myConn.prepareCall("{call getSECTION_NAME(?,?)}"))
        {
             myFirstCs.setString(1, searchSection);
             myFirstCs.registerOutParameter(2, Types.INTEGER);
             myFirstCs.executeUpdate();

             String name = null;

             System.out.println(myFirstCs.getObject(2));

            ResultSet myRs = null;
            myRs = (java.sql.ResultSet)myFirstCs.getObject(2);
            while (myRs.next()) // Retrieve result set rows
            {                  
                name=myRs.getString(1);
                System.out.print("Section Name: "+name);
            }
            myRs.close();

这是检索结果集的正确方法吗？我尝试使用try with resource尝试此方法。我在这里错过了一些事情ResultSet myRs = myFirstCs.getObject(2, type)我不知道我会在第二个参数中添加什么内容？

仅限样本

try (ResultSet myRs = myFirstCs.getObject(2, type))//What should I put here?
              {
                  while (myRs.next())
                  {
                      name = myRs.getString(1);
                      System.out.print("Section Name: "+name);
                  }//end of while
              }

随意发表评论。任何帮助将不胜感激。谢谢。

Answer 1

@Mia以下两个答案，我认为其中一个应该有效 -

try (Connection myConn = DBUtil.connect();
         CallableStatement myFirstCs = myConn.prepareCall("{call getSECTION_NAME(?,?)}"))
    {
         myFirstCs.setString(1, searchSection);
         myFirstCs.registerOutParameter(2, Types.INTEGER);
         myFirstCs.executeUpdate();

         String name = myFirstCs.getObject(2);
            System.out.print("Section Name: "+name);
    }

OR

try (Connection myConn = DBUtil.connect();
         CallableStatement myFirstCs = myConn.prepareCall("{call getSECTION_NAME(?,?)}"))
    {
         myFirstCs.setString(1, searchSection);
         myFirstCs.registerOutParameter(2, Types.INTEGER);
         myFirstCs.executeUpdate();

         String name = null;

         System.out.println(myFirstCs.getObject(2));

        ResultSet myRs = null;
        myRs = myFirstCs.getResultSet();
        while (myRs.next()) // Retrieve result set rows
        {                  
            name=myRs.getString(1);
            System.out.print("Section Name: "+name);
        }
        myRs.close();

如何使用getObject方法从结果集中获取结果？

1 个答案: