javax.servlet.ServletException: oracle.jdbc.driver.ScrollableResultSet.getBlob(Ljava/lang/String;)Ljava/sql/Blob;这是什么错误？
一段代码，仅是写入数据库的一段简单代码，其中有blob字段，分别在两台机器上测试，一台上就没有问题，另一台上报：javax.servlet.ServletException: oracle.jdbc.driver.ScrollableResultSet.getBlob(Ljava/lang/String;)Ljava/sql/Blob; 检查DB后发现，BLOB数据没有插进去，请教一下这是什么错误？怎样解决？谢谢

[解决办法]
你到底是查询还是写数据哦？
[解决办法]

为什么要强制转换？

难道java.sql.ResultSet的功能你觉得还不够拉风？

Java code

/**     * Retrieves the value of the designated column in the current row     * of this <code>ResultSet</code> object as a <code>Blob</code> object     * in the Java programming language.     *     * @param colName the name of the column from which to retrieve the value     * @return a <code>Blob</code> object representing the SQL <code>BLOB</code>      *         value in the specified column     * @exception SQLException if a database access error occurs     * @since 1.2     */    Blob getBlob(String colName) throws SQLException;/**     * Retrieves a stream that can be used to write to the <code>BLOB</code>      * value that this <code>Blob</code> object represents.  The stream begins     * at position <code>pos</code>.     *     * @param pos the position in the <code>BLOB</code> value at which     *        to start writing     * @return a <code>java.io.OutputStream</code> object to which data can      *         be written     * @exception SQLException if there is an error accessing the     *            <code>BLOB</code> value     * @see #getBinaryStream     * @since 1.4     */    java.io.OutputStream setBinaryStream(long pos) throws SQLException;