我正在使用Oracle 12g,并试图从ResultSet
中获取SYS_REFCURSOR
我有一个带有以下签名的过程:
CREATE OR REPLACE PROCEDURE proc_search(user IN VARCHAR2, res OUT SYS_REFCURSOR)
这是我正在使用的Java JDBC代码:
try {
CallableStatement cstmt = con.prepareCall("exec proc_search(?, ?)");
cstmt.setString(1, login);
cstmt.registerOutParameter(2, Types.REF);
cstmt.execute();
ResultSet rs = (ResultSet)cstmt.getObject(2);
while (rs.next()) {
System.out.println(rs.getString(1));
}
} catch (Exception e) {
System.err.println(e);
e.printStackTrace();
}
但是,出现以下错误:
java.sql.SQLException:ORA-03115:不支持的网络数据类型或表示形式
答案 0 :(得分:2)
首先,getCursor
应该使用SYS_REFCURSOR
方法而不是getObject
第二,prepareCall
应该有BEGIN
和END
代码段
try {
CallableStatement cstmt = con.prepareCall("BEGIN proc_search(?, ?); END;");
cstmt.setString(1, login);
cstmt.registerOutParameter(2, OracleTypes.CURSOR);
cstmt.execute();
ResultSet rs = ((OracleCallableStatement)cstmt).getCursor(2);
while (rs.next()) {
System.out.println(rs.getString("name"));
}
} catch (Exception e) {
System.err.println(e);
e.printStackTrace();
}
请注意,必须有一个finally块来关闭Connection,CallableStatement,ResultSet等。
finally {
try {
if (con != null)
con.close();
if (cstmt!= null)
cstmt.close();
if (rs!= null)
rs.close();
} catch (SQLException sqlexc) {
sqlexc.printStackTrace();
}
}
更新1
使用CallableStatement
Connection conn = null;
CallableStatement callableStatement = null;
ResultSet rs = null;
try {
conn = getconn();
callableStatement = conn.prepareCall("{call proc_search(?, ?)}");
callableStatement.setString(1, login);
callableStatement.registerOutParameter(2, OracleTypes.CURSOR);
callableStatement.executeUpdate();
rs = (ResultSet) callableStatement.getObject(2);
while (rs.next()) {
String userid = rs.getString("name");
}
} catch (SQLException e) {
System.out.println(e.getMessage());
e.printStackTrace();
} finally {
if (rs != null) {
rs.close();
}
if (callableStatement != null) {
callableStatement.close();
}
if (conn != null) {
conn.close();
}
}
}