java調用存儲過程無法取得返回參數

環境：數據庫sql server2005，jdk1.6 ，myeclipse，驅動jdts1.2.2

執行以下代碼，報錯：

String querySQL = "{?=call p_sys_manager_csReport(?,?,?,?,?)}"; cstmt = conn.prepareCall(querySQL); cstmt.registerOutParameter(1, java.sql.Types.INTEGER); cstmt.setInt(2, modType); cstmt.setInt(3, dptId); cstmt.setInt(4, eplId); cstmt.registerOutParameter(5, java.sql.Types.VARCHAR); cstmt.registerOutParameter(6, java.sql.Types.VARCHAR); rs = cstmt.executeQuery(); if (rs != null) { if (rs.next()) { companyTotal = rs.getInt("companyTotal"); } } String temp = null; temp = cstmt.getString(5);//此行報錯

 

報錯信息爲：

java.sql.SQLException: Output parameters have not yet been processed. Call getMoreResults().
    at net.sourceforge.jtds.jdbc.ParamInfo.getOutValue(ParamInfo.java:159)
    at net.sourceforge.jtds.jdbc.JtdsCallableStatement.getOutputValue(JtdsCallableStatement.java:116)
    at net.sourceforge.jtds.jdbc.JtdsCallableStatement.getString(JtdsCallableStatement.java:310)

報錯信息說得很明白，就是輸出結果參數未處理，必須調用getMoreResults()方法以判斷是否還有結果集。

然後修改代碼，問題解決：

String querySQL = "{?=call p_sys_manager_csReport(?,?,?,?,?)}"; cstmt = conn.prepareCall(querySQL); cstmt.registerOutParameter(1, java.sql.Types.INTEGER); cstmt.setInt(2, modType); cstmt.setInt(3, dptId); cstmt.setInt(4, eplId); cstmt.registerOutParameter(5, java.sql.Types.VARCHAR); cstmt.registerOutParameter(6, java.sql.Types.VARCHAR); rs = cstmt.executeQuery(); if (rs != null) { if(rs.next()) { companyTotal = rs.getInt("companyTotal"); } } String temp = null; /* *記錄集獲取到後,把rs記錄集循環取出後或者調用cstmt.getMoreResults()方法後,sqlserver纔會處理output返回值 */ if (!cstmt.getMoreResults()) {//此行判斷是否還有更多的結果集,如果沒有,接下來會處理output返回參數了 temp = cstmt.getString(5);//此行不再報錯 }

 

其中改爲以下代碼也不報錯：

if (rs != null) { while(rs.next()) {//if改爲while companyTotal = rs.getInt("companyTotal"); } } String temp = null; /* * 去掉cstmt.getMoreResults(),將上面的if(rs.next()) 改爲while(rs.next())也不報錯 */ //if (!cstmt.getMoreResults()) { temp = cstmt.getString(5);//此行不再報錯 //}