读取inputstream时过早到达DB2流的末尾

Question

Following code:

InputStream imageData=image.getInputStream();
byte[] bytes = ByteStreams.toByteArray(imageData);
pst.setBinaryStream(3, imageData, (int)bytes.length);

gives the following error:

com.ibm.db2.jcc.am.SqlException: [jcc][t4][2039][11162][3.57.82] End of stream prematurely reached while reading InputStream, parameter #3. Remaining data has been padded with 0x0. ERRORCODE=-4225, SQLSTATE=null`

and the DDL which I used to create table is following:

CREATE TABLE ARCH_TRANCHE.UPLOAD_DETAIL (
    SEQ_ID VARCHAR(200) NOT NULL,
    FILE_NAME VARCHAR(140) NOT NULL,
    IMAGE_FILE BLOB(1048576),
    CREATED_DATE TIMESTAMP,
    LAST_MODIFIED_DATE TIMESTAMP,
    FILE_SIZE VARCHAR(20),
    PRIMARY KEY (SEQ_ID,FILE_NAME)
);

Answer 1

I suspect the problem is that you've already read the data by this point in order to obtain bytes ... so when the driver tries to read from imageData , it immediately finds there's no more data to read.

I suggest you just set the stream without a length:

pst.setBinaryStream(3, image.getInputStream());

If you can't do that (as per comments) you could extract all the data into a byte array as you're already doing, then wrap that in a ByteArrayInputStream :

InputStream imageData = image.getInputStream();
byte[] bytes = ByteStreams.toByteArray(imageData);
pst.setBinaryStream(3, new ByteArrayInputStream(bytes), bytes.length);