[Issue viewing the subreport]

You should check the condition to show those elements.
And also check the font of the textfield. If the font does not support your language, the text field will be blank.

[Jasper report takes too long]

Split input data into smaller parts. Then generate reports. Finally, merge reports into one.

[Multiple data Source in same report]

Just create a subDataset. Then create a new dataSource base on your input parameters.

Similar to the comment on this topic but you can change your subDataset fields:
https://community.jaspersoft.com/questions/1157291/there-way-pass-list-object-datasource-instead-custom-class-object

[Issue viewing the subreport]

Maybe that value is not available in your Test environment. You should check the input value first. 

[Dealing with stretch type in a textfield and subreport at same band]

In your picture, I can not know which is the text field and which is your subreport.

Can you please draw again and show me which element in your screenshot. I will help you.

[Problems with a textfield]

In my experience, the width of the text field can not be changed by the content inside it.

So, the background color should fit with the width of the text field that you defined. It can not make the text field bigger or something like that.

[Jasper Maven Dependency not getting downloaded.]

Try to add these repositories:

                jasperreports        http://jasperreports.sourceforge.net/maven2                jaspersoft-third-party        http://jaspersoft.artifactoryonline.com/jaspersoft/third-party-ce-artifacts/    [/code]

 

 

[JasperReport to set height of textfield dynamically]

<textField textAdjust="StretchHeight">    <reportElement x="0" y="0" width="1520" height="15" uuid="6cb61704-2f0a-4b05-b714-f0219175f001">        <property name="com.jaspersoft.studio.element.name" value="content"/>    </reportElement>    <box topPadding="35" leftPadding="35" bottomPadding="35" rightPadding="35"/>    <textFieldExpression><![CDATA[$F{point4}]]></textFieldExpression></textField>[/code]

Just use textAdjust="StretchHeight" in your text field. It's will be stretch base on the content inside.

[Evaluating Statement to True / should be false]

Oh my mistake. That is trim()

[Amount in words in rupess and pasia]

Write your own method to do it.

This is not related to Jasper Report.

And I think you can use google normally.

When I search google with keyword: "number to word code", I received 3m results.

https://stackoverflow.com/questions/3911966/how-to-convert-number-to-words-in-java

[Change rectangle color dynamically]

Try using a Text field. Then modify the Markup to HTML. Finally, add HTML code to the TextField's textFieldExpression and STYLE="background: #your-color-code" to your HTML tag.

[Print When expression remove column]

You haven't defined this field yet. That is the reason why your report can not find your field.

[Create labels with Jaspersoft Studio]

You can follow this article: https://www.stackextend.com/java/generate-pdf-document-using-jasperreports-and-spring-boot/

[How to use object of a class which contain object of another class as datasource in jasper report?]

try to use the getters in Domain class to display a String.

Example: $F{domain}.getId()

[Generating jasper report when the app was compiled in fat jar]

Your fontsfamily1586778266566.xml is wrong. Edit follow the following code:

<?xml version="1.0" encoding="UTF-8"?><fontFamilies>    <fontFamily name="Lobster Two">        <normal>lobstertwo/LobsterTwo-Regular.otf</normal>        <bold>lobstertwo/LobsterTwo-Bold.otf</bold>        <italic>lobstertwo/LobsterTwo-Italic.otf</italic>        <boldItalic>lobstertwo/LobsterTwo-BoldItalic.otf</boldItalic>        <pdfEncoding>Identity-H</pdfEncoding>        <pdfEmbedded>true</pdfEmbedded>    </fontFamily></fontFamilies>[/code]

 

[JasperReport Export PDF Render Khmer Unicode incorrectly in JAVA]

You have to import the font that supports Khmer Unicode to your Java application. 
You can check the demo project here: https://github.com/TIBCOSoftware/jasperreports/releases

Download the http://jasperreports-6.12.2-project.zip/, unzip and check the demosamplesfonts.

Basically, import your font, check the fonts.xml. Then create 2 properties files, jasperreports.properties and jasperreports_extension.properties.

Bingo, your text display correctly.

[[SOLVED] Recommandation about the way to integrate Jasper Reports]

In my opinion, just create a Python application, then import your PDF template design using Jasper report, transfer your data using parameters instead of fields and you will get the PDF as the result.

Firstly, design a template using Jasper Report Studio. You will get the jrxml file.

Secondly, for the import template to the Python application, I found this: https://pypi.org/project/pyreportjasper/

Finally, transfer your data using parameters instead of fields. As you can see in the above link, when running the jasper.process(), they pass an object containing a property is parameters. parameters property is a map object with the key is string and value is any type you want. Define a parameter in your PDF template and you can use it in your template. You can receive the data via HTTP request and pass the data to PDF template through parameters.

[jasperreports library using itext library to export pdf reports and itext is now not available to distribute]

Add the maven repository of Jasper Report and use itext version 2.1.7.js4.

URL: 

http://jasperreports.sourceforge.net/maven2/

Itext:

group: 'com.lowagie', name: 'itext', version: '2.1.7.js4'

[Print when does not work]

You don't need to use the Ternary operator in your expression because the first expression returns a boolean.

To verify your expression, you should put that into the value of one Text field and check the result after it is printed.

The Print when expression works well. Your expression may have an error.

[the element position is invalid]

Upload your jrxml file. I will help you.

Are you Vietnamese?

[How to convert string and print as number format in iReport 3.7.0]

Maybe it will be complicated here.

Your value comes from the database is a string. And we can get 2 numbers of that string by the split method

Example: 

java.util.Arrays.asList("4999.000000-10000.000000".split("-"))[/code]

The result of the above line is an array list contains your 2 numbers.

You can create 2 variables in your report to store that 2 numbers.

    <variable name="number1" class="java.lang.String">        <variableExpression><![CDATA[(java.util.Arrays.asList($F{your_number_field}.split("-"))).get(0)]]></variableExpression>    </variable>[/code]

Then format the string as your request.

[How to convert string and print as number format in iReport 3.7.0]

You can convert the String to Integer, then show it out.

java.lang.Integer.valueOf("4999") + "-"  + java.lang.Integer.valueOf("10000")[/code]

 

[Set the position of an element from a external source (variable, parameter, custom java code...)]

There is no way to do that.

[Vertically alignment of image in table column]

Add stretchType="RelativeToBandHeight" to your image. The height of the image element will be stretched bases on the height of the row.

[Remove a frame without left blank line when expression is true]

Try to resize the height of frame B to 1px.

Then change the StretchType to RelativeToBandHeight or ContainerHeight.

The idea is if frame B appears, the size will be stretched base on the container height. Unless, it will take 1px height.