CSV & Java
Hello,
I have some question....I must make school schedule as a web service...School schedule is in csv file, i need parse it and search and return some results. Which class is best to save data from CSV? I used ArrayList bud I think that is no effective...:-(
Can someone help me resolve this question?
Thanks a lot....
GrEEn_SK wrote:
I have something like this:
Day; Time; Subject; Proffesor; Faculty; Duration
Fr; 10:00-12:00; Programming in Java; Faculty of Mechatronics; 2
And I need to parse this data, and be able to search and return search results....How much data are we talking about? How are you now storing it in your ArrayList, as Strings or did you create custom classes?
Similar Messages
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Hi, I'm writing a program in java that has to upload a csv file from the disk, but i can´t find examples to guide me, (I´m new in Java HTMLB programing).
Can anybody help me ...Hi Virginia,
ok for the first step, you might have a look at: http://ostermiller.org/utils/ExcelCSV.html
There is a Java parser for the special Excel CSV format (which doesn't conform to "standard" CSV rules).
Having the resolved data in the corresponding String array(s) it should be easy to format it as a Html table.
There are many other resources out there in the WWW, you could search for "reading CSV java" using Google for example.
Is it mandatory for you to use HTMLB? What about creating a Web Dynpro application for that?
Hope that helps.
Regards
Stefan -
Hi Gurus,
I have configured Rejection message handler to send the rejected file into a location of an FTP server. The action part of my fault policy looks like this
<Actions>
<Action id="writeToFile">
<fileAction>
<location>/u03/sftpuser/out</location>
<fileName>stud.csv</fileName>
</fileAction>
</Action>
But it is not writing the file here. The error in the logs shows as below
[2013-11-06T02:00:21.145-05:00] [soa_server1] [WARNING] [] [oracle.integration.platform.faulthandling.recovery] [tid: Workmanager: , Version: 0, Scheduled=false, Started=false, Wait time: 0 ms\n] [userId: weblogic] [ecid: 5644e604b69ae2c7:6287cedb:14143ebdfe9:-8000-0000000000683616,0] [APP: soa-infra] Not able to write metadata to file: /u03/sftpuser/out/stud_metadata.csv[[
java.io.FileNotFoundException: /u03/sftpuser/out/stud_metadata.csv (Permission denied)
[2013-11-06T02:00:21.146-05:00] [soa_server1] [WARNING] [] [oracle.integration.platform.faulthandling] [tid: Workmanager: , Version: 0, Scheduled=false, Started=false, Wait time: 0 ms\n] [userId: weblogic] [ecid: 5644e604b69ae2c7:6287cedb:14143ebdfe9:-8000-0000000000683616,0] [APP: soa-infra] [RejectedMsgHandling]Unable to apply policies on the rejected message with id - 10[[
java.io.FileNotFoundException: /u03/sftpuser/out/stud_metadata.csv (Permission denied)
I have checked the FTP server and at this location all the permissions are granted. Please let me know what i am missing here.
Thanks
AyushAre you able to ftp to the same location via putty ? Also, you could increase the log level from the EM Console to level 32 for granular log details.
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AdvancedDataGrid with XMLListCollection Syntax
Hello All,
I'm more of an XSLT/XPath guy, and need help with the syntax
for Flex(if that's the only thing I'm doing wrong!). I have an
XMLListCollection named "mapData" with records from a web service.
Each record looks like this:
<java:Results xmlns:java="java:com.example.com">
<java:AssociatedFileID>9999</java:AssociatedFileID>
<java:AssociatedFileName>example.csv</java:AssociatedFileName>
<java:DataBucketID>123</java:DataBucketID>
<java:DataBucketName>EDashboard</java:DataBucketName>
<java:Fields>
<java:DataBucketFieldName>Business</java:DataBucketFieldName>
<java:DataBucketFieldValue>Loans</java:DataBucketFieldValue>
<java:DataBucketFieldID>4281</java:DataBucketFieldID>
</java:Fields>
<java:Fields>
<java:DataBucketFieldName>Section</java:DataBucketFieldName>
<java:DataBucketFieldValue>Europe</java:DataBucketFieldValue>
<java:DataBucketFieldID>4394</java:DataBucketFieldID>
</java:Fields>
<java:LoadedDateTime>2008-03-19T10:57:21-04:00</java:LoadedDateTime>
<java:Suppressed>No</java:Suppressed>
<java:DataBucketContentID>170</java:DataBucketContentID>
<java:Status>Active</java:Status>
</java:Results>
My AdvancedDataGrid is:
<mx:AdvancedDataGrid x="10" y="10" id="MapDG"
designViewDataType="flat" width="100%" height="100%"
dataProvider="{mapData}" click="{editBtn.enabled=true;}"
selectionMode="singleRow" change="{editBtn.enabled=true;}">
<mx:columns>
<mx:AdvancedDataGridColumn headerText="ID"
dataField=""/>
<mx:AdvancedDataGridColumn headerText="Business"
dataField=""/>
<mx:AdvancedDataGridColumn headerText="Section"
dataField=""/>
</mx:columns>
</mx:AdvancedDataGrid>
Here's what I'm trying to do for each column:
1 - *::Results.*::DataBucketContentID.text()
//this is the record ID
2. -
*Results.*::Fields.(*::DataBucketFieldName.text()='Business').*DataBucketFieldValue.text( )
//Gets the 'DataBucketFieldValue' for each 'Fields' that has
a 'DataBucketFieldName' = Business
3. -
*Results.*::Fields.(*::DataBucketFieldName.text()='Section').*DataBucketFieldValue.text()
//Gets the 'DataBucketFieldValue' for each 'Fields' that has
a 'DataBucketFieldName' = Section
What do I need to put in the columns' dataField for this to
work?
Thanks,
TravThanks to Tracy and a little research, I have my data grid
populating - I wanted to post an example that worked for me:
If below is a variable with your web service result...
private var personXML:XML=<persons>
<person>
<FirstName>Santa</FirstName>
<Surname>Claus</Surname>
<Age>1000</Age>
</person>
<person>
<FirstName>Tooth</FirstName>
<Surname>Fairy</Surname>
<Age>250</Age>
</person>
<person>
<FirstName>Travis</FirstName>
<Surname>Allen</Surname>
<Age>27</Age>
</person>
</persons>
You can use a function, which you'll need to assign to a
column. Here it is concating text in 2 elements but you can also
use it for namespaced elements (e.g.
item.*::NodeName1.*::NodeName2.text()).
private function showFullName(item:Object,
Column:DataGridColumn):String{
var fullName:String = item.FirstName + " " + item.Surname;
return fullName;
The first column uses the function to populate the data in
the column. It has to use labelFunction (vs. dataField). The 2nd
uses the node name directly.
<mx:DataGrid id="personDG"
dataprovider="{personXML.person}">
<mx:columns>
<mx:DataGridColumn width="150" headerText="Full Name"
labelFunction="showFullName"/>
<mx:DataGridColumn width="150" dataField="Age"
width="50"/>
<!--the column without header text wil take the value of
the element-->
</mx:columns>
</mx:DataGrid>
Hope this helps anyone else!
Trav -
Hi Experts,
I have a requirement to export all the data from a Oracle table to file, i tried odi tool ODISQLUnload and its exporting the data as expecxted but i am not getting the columnn name as such.
Can anyone help me in this, its driving me crazy for two days.
regrds,
KYes, i can now able to select the KM, but when i executed its failed with
7000 : null : java.sql.SQLException: File not found: ../demo/file/my_file.csv
java.sql.SQLException: File not found: ../demo/file/my_file.csv
at com.sunopsis.jdbc.driver.file.x.<init>(x.java)
at com.sunopsis.jdbc.driver.file.a.d.d.a(d.java)
at com.sunopsis.jdbc.driver.file.g.a(g.java)
at com.sunopsis.jdbc.driver.file.w.executeQuery(w.java)
at com.sunopsis.sql.SnpsQuery.executeQuery(SnpsQuery.java)
at com.sunopsis.dwg.dbobj.SnpSessTaskSql.getTargetOrderMetaData(SnpSessTaskSql.java)
at com.sunopsis.dwg.dbobj.SnpSessTaskSql.execCollOrders(SnpSessTaskSql.java)
at com.sunopsis.dwg.dbobj.SnpSessTaskSql.treatTaskTrt(SnpSessTaskSql.java)
at com.sunopsis.dwg.dbobj.SnpSessTaskSqlI.treatTaskTrt(SnpSessTaskSqlI.java)
at com.sunopsis.dwg.dbobj.SnpSessTaskSql.treatTask(SnpSessTaskSql.java)
at com.sunopsis.dwg.dbobj.SnpSessStep.treatSessStep(SnpSessStep.java)
at com.sunopsis.dwg.dbobj.SnpSession.treatSession(SnpSession.java)
at com.sunopsis.dwg.cmd.DwgCommandSession.treatCommand(DwgCommandSession.java)
at com.sunopsis.dwg.cmd.DwgCommandBase.execute(DwgCommandBase.java)
at com.sunopsis.dwg.cmd.e.i(e.java)
at com.sunopsis.dwg.cmd.g.y(g.java)
at com.sunopsis.dwg.cmd.e.run(e.java)
at java.lang.Thread.run(Unknown Source)
please help me.... -
Crystal report - generate CSV file through Java interface
Hi,
I need to generate a Character Seperated File through Crystal Report 10 using Java.
What constant stands for CSV Format and what value of SI_PROGID we can provide to pull the CSV format.
Eg. SI_PROGID = ceProgID.EXCEL or SI_PROGID = ceProgID.PDF .....
Currentlly we are crystalLibs.jar to connect the Crystal server.
Thanks In AdvanceIn BusinessObjects Enterprise installations, the following ProgIDs are valid.
CrystalEnterprise.Analytic
CrystalEnterprise.AppFoundation
CrystalEnterprise.Calendar
CrystalEnterprise.Category
CrystalEnterprise.Connection
CrystalEnterprise.Designer
CrystalEnterprise.Destination
CrystalEnterprise.DiskUnmanaged
CrystalEnterprise.Event
CrystalEnterprise.Excel
CrystalEnterprise.Folder
CrystalEnterprise.FavoritesFolder
CrystalEnterprise.Ftp
CrystalEnterprise.Hyperlink
CrystalEnterprise.Inbox
CrystalEnterprise.InfoView
CrystalEnterprise.LicenseKey
CrystalEnterprise.Managed
CrystalEnterprise.MyInfoView
CrystalEnterprise.ObjectPackage
CrystalEnterprise.Overload
CrystalEnterprise.Pdf
CrystalEnterprise.PersonalCategory
CrystalEnterprise.Powerpoint
CrystalEnterprise.Program
CrystalEnterprise.Report
CrystalEnterprise.Rtf
secEnterprise
secLDAP
CrystalEnterprise.Server
CrystalEnterprise.ServerGroup
CrystalEnterprise.Shortcut
CrystalEnterprise.Smtp
CrystalEnterprise.Txt
CrystalEnterprise.Universe
CrystalEnterprise.User
CrystalEnterprise.UserGroup
CrystalEnterprise.Webi
CrystalEnterprise.Word -
How can I export the universe to CSV format in Rational (java)
How can I export the universe to CSV format in Rational ,please give me one demo .thanks!!
There's no direct access to an Universe from Java - Universes do have an SDK, but it's COM-based.
If what you want is to retrieve data from the Universe, what you can do is create a Web Intelligence document reporting off that Universe, create a Query with the data you want from the Universe, then use the ReportEngine (REBean) SDK to retrieve the ResultSet from the Query - note that there's no CSV export option, so you'd have to walk through the ResultSet and write to an CSV yourself.
Sincerely,
Ted Ueda -
Generating CSV file with column names and data from the MySQL with JAVA
Hi all,
Give small example on ...
How can I add column names and data to a CSV from from MySQL.
like
example
sequence_no, time_date, col_name, col_name
123, 27-apr-2004, data, data
234, 27-apr-2004, data, data
Pls give small exeample on this.
Thanks & Regards
Rama KrishnaHello Rama Krishna,
Check this code:
Example below exports data from MySQL Select query to CSV file.
testtable structure
CREATE TABLE testtable
(id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
text varchar(45) NOT NULL,
price integer not null);
Application takes path of output file as an argument.
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class automateExport {
public static void main(String[] args) {
DBase db = new DBase();
Connection conn = db.connect(
"jdbc:mysql://localhost:3306/test","root","caspian");
if (args.length != 1) {
System.out.println(
"Usage: java automateExport [outputfile path] ");
return;
db.exportData(conn,args[0]);
class DBase {
public DBase() {
public Connection connect(String db_connect_str,
String db_userid, String db_password) {
Connection conn;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
conn = DriverManager.getConnection(db_connect_str,
db_userid, db_password);
} catch(Exception e) {
e.printStackTrace();
conn = null;
return conn;
public void exportData(Connection conn,String filename) {
Statement stmt;
String query;
try {
stmt = conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
//For comma separated file
query = "SELECT id,text,price into OUTFILE '"+filename+
"' FIELDS TERMINATED BY ',' FROM testtable t";
stmt.executeQuery(query);
} catch(Exception e) {
e.printStackTrace();
stmt = null;
Greetings,
Praveen Gudapati -
Error: java.lang.OutOfMemoryError when uploading CSV files to web server
Hi experts,
I have made a JSP page from which clients load csv files to web server. I am using Tomca 4.1 as my web server and JDK 1.3.1_09.
The system works fine when uploadiing small csv files, but it crashes when uploading large CSV files.
It gives me the following error:
java.lang.OutOfMemoryError
<<no stack trace available>>
This is the code that I used to load files....
<%
String saveFile = "";
String contentType = request.getContentType();
if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0))
DataInputStream in = new DataInputStream(request.getInputStream());
int formDataLength = request.getContentLength();
byte dataBytes[] = new byte[formDataLength];
int byteRead = 0;
int totalBytesRead = 0;
while (totalBytesRead < formDataLength)
byteRead = in.read(dataBytes, totalBytesRead, formDataLength);
totalBytesRead += byteRead;
String file = new String(dataBytes);
saveFile = file.substring(file.indexOf("filename=\"") + 10);
saveFile = saveFile.substring(0, saveFile.indexOf("\n"));
saveFile = saveFile.substring(saveFile.lastIndexOf("\\") + 1,saveFile.indexOf("\""));
int lastIndex = contentType.lastIndexOf("=");
String boundary = contentType.substring(lastIndex + 1,contentType.length());
int pos;
pos = file.indexOf("filename=\"");
pos = file.indexOf("\n", pos) + 1;
pos = file.indexOf("\n", pos) + 1;
pos = file.indexOf("\n", pos) + 1;
int boundaryLocation = file.indexOf(boundary, pos) - 4;
int startPos = ((file.substring(0, pos)).getBytes()).length;
int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;
String folder = "f:/Program Files/Apache Group/Tomcat 4.1/webapps/broadcast/file/";
//String folder = "10.28.12.58/bulksms/";
FileOutputStream fileOut = new FileOutputStream(folder + saveFile);
//out.print("Saved here: " + saveFile);
//fileOut.write(dataBytes);
fileOut.write(dataBytes, startPos, (endPos - startPos));
fileOut.flush();
fileOut.close();
out.println("File loaded successfully");
//f:/Program Files/Apache Group/Tomcat 4.1/webapps/sms/file/
%>
Please can anyone help me solve this problem for me...
Thanx...
DeepakI know it may be hard to throw away all this code, but consider using the jakarta fileupload component.
I think it would simplify your code down to
// Create a factory for disk-based file items
FileItemFactory factory = new DiskFileItemFactory();
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload(factory);
// Parse the request
List /* FileItem */ items = upload.parseRequest(request);
// Process the uploaded items
Iterator iter = items.iterator();
while (iter.hasNext()) {
FileItem item = (FileItem) iter.next();
if (item.isFormField()) {
processFormField(item);
} else {
// item is a file. write it
File saveFolder = application.getRealPath("/file");
File uploadedFile = new File(saveFolder, item.getName());
item.write(uploadedFile);
}Most of this code was hijacked from http://jakarta.apache.org/commons/fileupload/using.html
Check it out. It will solve your memory problem by writing the file to disk temporarily if necessary.
Cheers,
evnafets -
How to export report IN CSV format through JAVA.
how to export report in csv format.when try to export in csv format.its exporting into csv but report not containing column heading , report heading and it showing all the data in a single line.we have integrated the reports with java.
Use a Java API which can create PDF files based on some collection of plain vanilla Java objects (List, String, Number, etc).
Google can find them all. Just feed it with something like "Java PDF API" or so. A commonly used one is iText.
That said, when talking about this in JSP context, ensure that you do NOT write raw Java code in JSP files using scriptlets. Raw Java code belongs in Java classes. In such case you need a Servlet. In JSP just use taglibs and EL to interact with backend Java code and data. Scriptlets are discouraged since over a decade. -
UTF-8 csv file generated by Java can't be displayed correctly on Excel 2000
Hi, I have a question about the file geneated by Java in UTF-8 format. If I have a file named "foo.csv" generated by my java code like this:
writer = new OutputStreamWriter(new FileOutputStream("foo.csv"), "UTF-8");
Then I write some data loaded from a MS SQL 2000 server to this file. Some data are in German or french characters. After the file is generated, if I open it in notepad, all the characters in the file looks good. The file is in UTF-8 format. The only problem is that when I open this csv file in MS Excel 2000, all the non-english character display incorrectly. For example:
"VERKTYGSTEKNIK I V�XJ� AB" display as itself in notepad, but it display as "VERKTYGSTEKNIK I V��XJ�� AB" in the MS Excel. I don't know the reason. If I don't have the encoding in the writer, then the file generated looks fine in the Excel (Even the non-English characters), in this case, the file is generated in ANSI format. But my client wants the file in UTF-8 format and also want to view it in Excel.
Why the UTF-8 file generated by Java can't be displayed correctly in Excel 2000?
My environment is:
OS: Window 2000 Server English Version
JDK: Sun jdk1.3.1
Thanks- Does ms excell actually support UTF-8
Yes. I believed that we installed some international add-on which is not in default installnation. Anyway, other UTF-8 or UTF-16 file can be openned and viewed by Excel without any problem.
- have you verifide that the file is viewable as a UTF-8 -encoded file
I think so. If I open it into Notepad and choose "save as", the file type if UTF-8 file
- Try opening the file in a program you are confident
that it support UTF-8 - eg. Mozilla...
I will try that.
- Check that your UTF-8 -encoded file has a UTF-8 identifier (0xFEFF ?)
as the first character
The unicode-16(LE or BE) file I got from internet, I found there is always two bytes in the front. (0xFEFF or 0xFFFE). My UTF-8 file generated by java doesn't have that. But should UTF-8 file also has this kind of specifcal bytes in the front? If I manually add these bytes in the front of my file using Ultraeditor and open it in Excel2000, it didn't help.
- Try using another spreadsheet program that supports UTF-8
Do you know any other spreadsheet program supports csv file and UTF-8. -
Accessing a .csv file in vi while the data is written by 3rd party java applicaiton
Hi
I have a requirement like below explained.
A java applicaiton reads data from hardware and writes in a .csv file. This java applicaiton is triggered by a button click in Labview VI.
--> cmd window -- cmd /C java Client n
the data will be read from hardware and written to the file per every second.
In the labview vi, we are reading the .csv file simultaneously and plotting the graph.
The above operations need to happen simultaneously.
When we tried this, we are geeting the "File Not Found Excpetion(the file is used by other process) in java application.
Can anyone help me why this might be happening in Labview. I tried this with a "c" applicaiton instead of Labview and it is working fine.
Problem observed only with labivew.
Regards
KrisNaah, I said, that will never work. But to my shock and (pleasant) surprise, it does! Here is a snippet of a little routine I cobbled together using LabVIEW for both the Writer and the Reader.
The Writer is on top. It creates a Temp.txt file on my Temp directory, deletes it if it is already there, then opens it for writing. There's a boolean "Done" flag that tells me when the Writer finishes, so I clear it before entering the Writing Loop. Here, every half-second, I write the sequential numbers 0 .. 9, with a New Line to create a Text File of Lines. When I'm finished, I close the file.
Below this is the Reader Loop, designed to start after the Writer Loop has opened (and created) the file. Here we open the same file in Read-Only mode. The Reader Loop also goes 10 times (I could have built in a Stop condition, but this is only a Proof-of-Concept). The loop is initialized with the current File Position (0) in a Shift Register. The inner While Loop is a "Wait for Data to Appear", a loop which checks 10 times a second to see if the File Position has changed, exiting when it does (meaning the Writer has Written Something). It then reads a line from the File (the Read Text function has its "Read Lines" property set) and displays it.
When you run this, you will see the Reader's output, Line, count up, 0 .. 9, and then the program stops with no errors. What fun!
Bob Schor -
Import CSV/Excel data into Flex Datagrid using Java/JSP
Hi,
Is there any way we can import excel/csv data into flex datagrid component.
I see that is been done using php in this site. http://code.google.com/p/as3xls/
Any help would be appreciated.
Thanks in advanceYou can store the list of data from the Excel sheet that you have read already into an ArrayList
Then go through the JDBC tutorial, and learn how to insert a single record into the table.
After you understand how to insert a single record, you can iterate through the ArrayList of data and insert them into the table in the database.
If you know JDBC, see if you can use OR Mapping frameworks like Hibernate or iBatis, they make it very easy to manage database in Java. -
Hello!!
I would be obliged if some one could tell me anyway of using CSV (Collaborative Source Versioning) with Java Servlets. I have searched and the only package that I have found is jCSVSlet but I can't figure out how to use it. I would be obliged if anybody could point out any other packages that can be used for File Versioning or if anybody could send me any examples of JCSVSlet or any other related software.
Saad TawwabAnd what do you mean by "with"? Do you want to control versions of the source code of the servlets, or do you want to write a servlet to control version of the source code of something else?
-
Need JAVA code to create OIM ITresource-connection values are in a csv file
Hi,
Could any one plz help me with the java code used / tested before to create OIM IT resource dynamically, for the reference. IT resource parameter (connection) values in a .csv file, where in I've multiple environments.
Thanks,
Ramesh
Edited by: user13267745 on Aug 19, 2010 12:37 AMHi Gregg,
You can create one transformation from the DataStore to itself. In the "Technical" rules group, set 0RECORDMODE = 'X' (before image) or 'R' (reverse). Therefore, when you execute its corresponding DTP, all existing records shouldl be set to zero.
Then, as a second step, you can execute the DTP which is related to the transformation between the DataStore and the DataSource, thus loading the new records.
I hope this helps you.
Regards,
Maximiliano
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