来源：http://blog.csdn.net/security08/article/details/5148586

执行以下代码，报错：

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);//此行报错

报错信息为：

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)

报错信息说得很明白，就是输出结果参数未处理，必须调用getMoreResults()方法以判断是否还有结果集。

然后修改代码，问题解决：

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;
/**记录集获取到后,把rs记录集循环取出后或者调用cstmt.getMoreResults()方法后,sqlserver才会处理output返回值
*/
if (!cstmt.getMoreResults()) {//此行判断是否还有更多的结果集,如果没有,接下来会处理output返回参数了temp = cstmt.getString(5);//此行不再报错
}

其中改为以下代码也不报错：

if (rs != null) {while(rs.next()) {//if改为whilecompanyTotal = rs.getInt("companyTotal");}
}
String temp = null;
/** 去掉cstmt.getMoreResults(),将上面的if(rs.next()) 改为while(rs.next())也不报错
*/
//if (!cstmt.getMoreResults()) {temp = cstmt.getString(5);//此行不再报错
//}