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java调用存储过程无法取得返回参数 收藏
环境：数据库sql server2005，jdk1.6 ，myeclipse，驱动jdts1.2.2
执行以下代码，报错：
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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
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：
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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
}
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：
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if (rs != null) {
while(rs.next()) {//if改为while
companyTotal = 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
//}
本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/security08/archive/2010/01/08/5148586.aspx
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