REG: WRITE XML STRING INTO XML FILE
Hi All, I have a XML FILE on PC. I get a xml string from my server.
My Task: I want to append the xml string coming from the server into the existing xml file at a particular Node. Given below is my code :
String xmlString = baos.toString();
DocumentBuilder db4XMLString = docBuilderFactory.newDocumentBuilder();
InputSource inStream = new InputSource();
inStream.setCharacterStream(new StringReader(xmlString));
Document doc4XMLString = db4XMLString.parse(inStream);
Node root4XMLString = doc4XMLString.getElementsByTagName("epg").item(0);
doc.appendChild(doc.importNode(root4XMLString, true));
File file = new File(Constant.XMLFILEPATH);
Result result = new StreamResult(file.toURI().getPath());
Source source = new DOMSource(doc);
Transformer xformer = TransformerFactory.newInstance().newTransformer();
xformer.transform(source, result);But, wen i run my application I get following exception:
The markup in the document following the root element must be well-formed.
org.xml.sax.SAXParseException: The markup in the document following the root element must be well-formed.
at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)
Is that my XML string is not well formed. Is it so then please let me how to convert my xml string into well formed XML data.
Please help me out.
Thanking You.
There are many reasons why xmlString could be not well formed. There is no magic recipe for making it well formed: just look at it and see why it is not parseable.
Note that this line:
String xmlString = baos.toString();can be problematic if you have non ASCII-7 characters in your XML document. baos could then contain a byte representation of these characters in one particular encoding, but, since you use the .toString() method that relies on the default encoding of your system, you can end up with a mismatch and garbage in your XML.
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How can i write a string into a specified pos of a file?
How can i write a string into a specified pos of a file without read all file into ram and write the whole file again?
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import java.io.*;
import java.util.*;
* Copyright (c) 2002 Frank Fischer <[email protected]>
* All rights reserved. See the LICENSE for usage conditions
* ObjectProperties.java
* version 1.0, 2002-09-12
* author Frank Fischer <[email protected]>
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Write the data into a file in 10 ms interval within 10 sec
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at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351)
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at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242)
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at java.awt.Component.processMouseEvent(Component.java:6348)
at javax.swing.JComponent.processMouseEvent(JComponent.java:3267)
at java.awt.Component.processEvent(Component.java:6113)
at java.awt.Container.processEvent(Container.java:2085)
at java.awt.Component.dispatchEventImpl(Component.java:4714)
at java.awt.Container.dispatchEventImpl(Container.java:2143)
at java.awt.Component.dispatchEvent(Component.java:4544)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4618)
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You can create the XML using DOM or SAX parsers. The implementation of those are almost easy. For better work you can also use JAXB if the application is complex or the XML format is complex and huge.
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I have a simple jsp page having name and id field,
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Solved!
Go to Solution.You put the Write to Spreadsheet file in a case structure.
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Hi, all
I'm looking for the correct method of writing an internal blob value into a file. I know that the best way is using some external language. I.e. Java or C. But also I met a number of solutions of doing within pl/SQL block. All of them look like this:
CREATE OR REPLACE PROCEDURE Write_Binary_file
PC$Directory IN VARCHAR2
,PC$File_Name IN VARCHAR2
,PC$SQL_Order IN VARCHAR2
,PB$Raise IN BOOLEAN DEFAULT FALSE
-- Procedure to dump a BLOB column onto a file
-- parameters:
-- PC$Directory : name of an existing Oracle Directory
-- PC$File_Name : name of the expected output file
-- PC$SQL_Order : SQL order to select the BLOB column
-- PB$Raise : boolean to indicate if the process
-- would be stopped after an error
IS
src_lob BLOB;
buffer RAW(16384);
amt BINARY_INTEGER := 16384;
pos INTEGER := 1;
LF$FicOUT UTL_FILE.FILE_TYPE ;
LC$Msg VARCHAR2(2000) ;
BEGIN
-- get the BLOB column --
BEGIN
EXECUTE IMMEDIATE PC$SQL_Order INTO src_lob ;
EXCEPTION
WHEN NO_DATA_FOUND THEN
LC$Msg := 'Write_Binary_File(): NO_DATA_FOUND' ;
IF PB$Raise THEN
RAISE_APPLICATION_ERROR( -20100, LC$Msg ) ;
END IF ;
Dbms_Output.Put_Line(LC$Msg) ;
RETURN ;
END ;
-- open the output file --
LF$FicOUT := UTL_FILE.FOPEN( PC$Directory, PC$File_Name, 'W', 32764 ) ;
-- write the file --
LOOP
-- read the chunks --
Dbms_Lob.READ (src_lob, amt, pos, buffer);
-- write the chunks --
Utl_File.Put_Raw(LF$FicOut, buffer);
pos := pos + amt;
END LOOP;
-- close the file --
Utl_File.Fclose(LF$FicOut);
EXCEPTION
WHEN NO_DATA_FOUND THEN
utl_file.fclose(LF$FicOut);
WHEN OTHERS THEN
LC$Msg := 'Write_Binary_File() Error : ' || TO_CHAR( SQLCODE ) || ' while managing file ('
|| PC$Directory || ') ' || PC$File_Name ;
IF PB$Raise THEN
RAISE_APPLICATION_ERROR( -20100, LC$Msg ) ;
END IF ;
Dbms_Output.Put_Line(LC$Msg);
END Write_Binary_file;
But this code seems not working. The problem is it always creates a file with a bit bigger size than initial one. So jpg copy will be never be opened with any viewer.
Can anybody explain this issue and give any workaround?
ThanksYou need a code block like this:
DECLARE
l_file UTL_FILE.FILE_TYPE;
l_buffer RAW (32767);
l_amount BINARY_INTEGER := 32767;
l_pos INTEGER := 1;
l_blob BLOB;
l_blob_len INTEGER;
BEGIN
-- Open the destination file. Note the third parameter "wb"
l_file := UTL_FILE.FOPEN ('TEST_DIR', 'extract3.jpg', 'wb');
-- Get LOB locator
FOR rec IN (
SELECT blob_col l_blob
FROM test_my_blob
--AND ROWNUM =1
LOOP
l_blob_len := DBMS_LOB.getlength (rec.l_blob);
-- Read chunks of the BLOB and write them to the file
-- until complete.
WHILE l_pos < l_blob_len
LOOP
DBMS_LOB.READ (rec.l_blob, l_amount, l_pos, l_buffer);
UTL_FILE.put_raw (l_file, l_buffer, FALSE);
l_pos := l_pos + l_amount;
END LOOP;
commit;
END LOOP;
-- Close the file.
UTL_FILE.FCLOSE (l_file);
EXCEPTION
WHEN OTHERS
THEN
-- Close the file if something goes wrong.
IF UTL_FILE.IS_OPEN (l_file)
THEN
UTL_FILE.FCLOSE (l_file);
END IF;
RAISE;
END;
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