I'm using the JasperReports Java API. I'm using JRDesignExpression to show values on a report, with code like this:
JRDesignExpression expression = new JRDesignExpression();
expression.setText("$F{" + fieldName + "}");
I saw that $F{somename} syntax in some online examples and just copied it, because setText() is not documented, like much of the JasperReports API:
http://jasperreports.sourceforge.net/api/net/sf/jasperreports/engine/design/JRDesignExpression.html#setText(java.lang.String)
But is there some documentation somewhere else that describes that syntax? I'd like to specify formatting for numbers, for instance.
The syntax is correct. I had the same issue, I applied the text and saw null value instead. It turned out that the problem was with my code. I compiled the JasperDesign to JasperReport before I did all the changes. So make sure you do all modifications, and then compile.
JasperDesign jasperDesign = JRXmlLoader.load(inputStream);
//perform all modifications
JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
//continue with export
And also make sure you actually add it to some JRDesignTextField
Related
I want to extract text from an PDF document page wise and I am using itext. I used the example code from their website:
PdfReader reader = new PdfReader(pathToFile);
PdfReaderContentParser parser = new PdfReaderContentParser(reader);
TextExtractionStrategy strategy = parser.processContent(page, new SimpleTextExtractionStrategy());
The method processContent gives me a NullPointerException. What did I do wrong?
This is the stacktrace I get when using version 5.5.0 with this file:
java.lang.NullPointerException
at com.itextpdf.text.pdf.parser.PdfReaderContentParser.processContent(PdfReaderContentParser.java:82)
at com.itextpdf.text.pdf.parser.PdfReaderContentParser.processContent(PdfReaderContentParser.java:105)
at org.languageresources.PDFExtraktor.extractTextFromPage(PDFExtractor.java:100)
Given the code sniplet and sample document you gave I tried to reproduce the issue but to no avail, text extraction worked fine.
Furthermore, the stacktrace given:
java.lang.NullPointerException
at com.itextpdf.text.pdf.parser.PdfReaderContentParser.processContent(PdfReaderContentParser.java:82)
at com.itextpdf.text.pdf.parser.PdfReaderContentParser.processContent(PdfReaderContentParser.java:105)
at org.languageresources.PDFExtraktor.extractTextFromPage(PDFExtractor.java:100)
does not match the alleged version 5.5.0 because PdfReaderContentParser.java:82 in that version is an empty line and PdfReaderContentParser.java:105 does not exist: Back then that file was only 85 lines in size.
Assuming, though, that you use the current version 5.5.9, the stacktrace makes sense, in that version PdfReaderContentParser.java:82 is the second of these lines:
PdfDictionary pageDic = reader.getPageN(pageNumber);
PdfDictionary resourcesDic = pageDic.getAsDict(PdfName.RESOURCES);
and pageDic indeed can be null if there is no page pageNumber.
Thus, please check that page, the page number in question, is between 1 and reader.getNumberOfPages() inclusive.
I hope there is someone with experience in citrus :)
I've written a citrus (1.4 and 2.3) DB test against an Oracle db.
In citrus you can pass your query either as String or by referencing a file resource.
The String option works fine and the validation succeeds:
oracle.jdbc.pool.OracleDataSource ds = new oracle.jdbc.pool.OracleDataSource();
//init ds ...
query(ds).statement("SELECT * FROM TOUR WHERE ID = 12345").validate("STATUS", "1");
However the Resource option fails:
oracle.jdbc.pool.OracleDataSource ds = new oracle.jdbc.pool.OracleDataSource();
//init ds ...
query(ds).sqlResource("classpath:testdata/template/dbQuery.sql").validate("STATUS", "1");
Debugging the code showed that Citrus expects all statements in the sqlResource file to be separated by ";".Then it will correctly create separate statements and will try to execute them. However executing statements ending in ";" results in "SQLSyntaxErrorException: ORA00911: invalid character".
So am I missing something here?
Consider this to be a bug, issue has been opened (https://github.com/christophd/citrus/issues/79)
Issue has been fixed with 2.5.2 release of Citrus
Using SSJS I've successfully created a PDF using the simple HTML parser that comes with iText but the simple HTML parser doesn't respect CSS and is very limited. I downloaded the XMLWorker class from the iText site and have tried to use that instead but my knowledge of working out how to call Java packages is too limited. All the examples I can find use Java and refer to the classes directly, eg.
Document newPDF = new Document();
But in SSJS we have to use dot notation, eg.
var newPDF:com.itextpdf.text.Document = new com.itextpdf.text.Document();
This - I think - is where I stumble. My code looks like this:
function createLPO2(pReqDoc:NotesDocument) {
importPackage(com.itextpdf);
//importPackage(com.itextpdf.tool.xml.XMLWorkerHelper);
importPackage(java.io);
var con = facesContext.getExternalContext();
var response:com.ibm.xsp.webapp.XspHttpServletResponse = con.getResponse();
response.setContentType("application/pdf");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", -1);
response.setHeader("Content-Disposition","attachment; filename=\"LPO_" + pReqDoc.getItemValueString("RequisitionNo") + ".pdf\"");
var newPDF:com.itextpdf.text.Document = new com.itextpdf.text.Document();
var writer = com.itextpdf.text.pdf.PdfWriter.getInstance(newPDF,response.getOutputStream());
var xmlWorkerHelper = com.itextpdf.tool.xml.XMLWorkerHelper.getInstance();
var strHTML = getTestHTML(); //this is the HTML used in the examples on the iText site
xmlWorkerHelper.parseXHtml(writer, newPDF, new java.io.StringReader(strHTML));
newPDF.close();
writer.close();
facesContext.responseComplete();
}
If I run this script as it is I get a script error on the Domino console. If I remove the comment on the line importPackage(com.itextpdf.tool.xml.XMLWorkerHelper); it gives a completely different error. I suspect I have to import the XMLWorkerHelper package and not just the com.itextpdf package. I thought if I opened the jar file using a tool like 7-zip I could work out the path, which is how I arrived at com.itextpdf.tool.xml.XMLWorkerHelper
Is this right? If so, why does my script fail?
Rob,
seriously, don't try to do that in SSJS. iText is all Java, if you try to mangle with it in a different language it will stress you out. Create a wrapper class that has a method that takes an OutputStream and whatever data (Document, View etc) you need. Obtain the OutputStream in your SSJS and call the function. Look for the XAgent XSnippet on OpenNTF and my blog series (the last two are missing - bear with me) on PDF creation.
One word of caution: iText is GPL, so you either GPL your software too, buy a commercial iText license or look for alternatives like Apache PDFBox or Apache FOP. Ah the second caution: HTML to PDF is a Pita. You could look at a commercial tool like e.g. from Swing software (or change your approach)
While working on report for some client, guys and me, we've succeeded to define(Java), populate(from Hibernate v3.x) and 'feed' custom data source (in pseudo raw SQL something like:
select t1.c1,t2.c2,t3.c3 ... join-join-join ...
)
to
JasperFillManager(API v3.6.7):
ds = JasperFillManager.fillReport(fillReport(java.lang.String sourceFileName,
java.util.Map params, JRDataSource myCustomDataSource);
Now the BIG issue comes when we trying with iReport (v4.0.2) to populate this custom data source into report(either sub-report).
We've tried to pass it as parameter, as single data source to fillReport() - nAdA. Help please.
Now at all, conceptualy or by example, how to pass number if different custom data sources into sub-reports. Example could be very helpful.
Appreciate the help,
--vs
I need to work in .net 2.0. So I can't use OpenXML.
This is my source code and I have already Installed AccessDatabaseEngine.exe.
But still getting the exception:
"Could not find installable ISAM".
I have also tried "Extended Properties=Excel 8.0" in the connection string.
static void Main(string[] args)
{
DataSet dataSet = new DataSet();
OleDbConnection connection = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=|Data Directory|\HSC.xlsx;Extended Properties=Excel 12.0;HDR=YES;");
OleDbDataAdapter dataAdapter= new OleDbDataAdapter("select * from [Sheet1$]", connection);
dataAdapter.Fill(dataSet);
}
According to Carl Prothman, that should be
Extended Properties="Excel 12.0 Xml;
-- http://www.connectionstrings.com/excel-2007
In more detail:
OleDbConnection connection = new OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\\Docs\\Book2.xlsx;Extended Properties='Excel 12.0 xml;HDR=YES;'");
Note the single quotes.
I prefer to use the Microsoft OpenXML 2.0 SDK for this kind of functionality. It has a really nice interface, and it does not put a demand on having Office installed on the machine reading the XLSX file which is a good thing.
I'm writing this from my mobile, so hard to provide a link, but a Google search should easily find it for you.
Give it a try. I think you will like it.
EDIT
If you have to use .NET 2.0, you can go for using the JET variant of the OleDb instead.
That means you will do something like this to connect:
OleDbConnection connection = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;" +
"Data Source='" + filename + "';" +
"Extended Properties=\"Excel 8.0;HDR=No;IMEX=1;\"";);
Then you can query it like in your example above:
OleDbDataAdapter objAdapter = new OleDbDataAdapter("select * from [Sheet1$]", connection);
Try it! Just note that Jet have some strange logic of deciding if a column is numeric or not. See the following SO questions for details: Problem with using OleDbDataAdapter to fetch data from a Excel sheet
You should make sure that the connection string looks like the following ( even if you are accessing microsoft excel version 10 ->
MyConnection = new System.Data.OleDb.OleDbConnection(#"Provider=Microsoft.ACE.OLEDB.12.0;
Data Source='D:\csharp-Excel.xls';Extended Properties='Excel 12.0 Xml;HDR=Yes;'");