我有一個Oracle存儲過程中的輸出參數返回BLOB:閱讀使用JDBC春天沒有結果的BLOB設置
PROCEDURE GET_IMAGE_DATA(i_image_type IN NUMBER, o_image_data OUT BLOB) IS
BEGIN
SELECT IMAGE_DATA
INTO o_image_data
FROM IMAGES
WHERE IMAGE_TYPE = i_image_type;
END GET_IMAGE_DATA;
我想用JDBC Spring來讀取該數據。但是,DefaultLobHandler(我認爲OracleLobHandler)getBlobAsBytes()需要一個結果集。
private static class QueryForBinaryCryptKey extends StoredProcedure {
private static final String SQL = "IMAGE_PKG.GET_IMAGE_DATA";
private DefaultLobHandler lobHandler;
QueryForImageData(DataSource dataSource) {
super(dataSource, SQL);
setFunction(false);
lobHandler = new DefaultLobHandler();
declareParameter(new SqlParameter(KEY_TYPE, OracleTypes.NUMBER));
declareParameter(new SqlOutParameter(KEY_BLOB, OracleTypes.BLOB));
}
public Map getImage(int keyType) {
Map outParams = super.execute(inParams(keyType));
//how can I get the contents of the blob right here since
//getBlobAsBytes requires a resultSet???
return outParams;
}
private Map inParams(int keyType) {
Map params = new HashMap();
params.put(KEY_TYPE, new Integer(keyType));
return params;
}
}
當我擁有的是out參數而不是結果集時,如何獲得blob數據?