Android的碧玉报告 [英] Android Jasper Reporting

问题描述

能否碧玉报表集成到一个Android应用程序？我试图生成PDF，CSV，文本，并从JRXML文件XLS报告。不过，我没有看到包net.sf.jasperreports.engine是在Android SDK的支持。任何人都可以证实，这是可能的？

Can Jasper Reporting be integrated into an Android application? I'm trying to generate PDF, CSV, Text, and XLS reports from jrxml files. However, I don't see that the package net.sf.jasperreports.engine is supported in the Android SDK. Can anyone confirm that this is possible?

推荐答案

我试了一下，太。但我并不全成...

I tried it, too. But I was NOT successfull...

假如得到的JasperReports源（实际它是4.7.0主干）

Had get the source of JasperReports (actual it's trunk of 4.7.0)

那时，在源 - code一些变化：

Then there were some changes in Source-Code:

1. 集创建解析器valadation为假
   （net.sf.jasperreports.engine.xml.BaseSaxParserFactory）：

1. set created Parser valadation to false (net.sf.jasperreports.engine.xml.BaseSaxParserFactory):

public SAXParser createParser() {
    try {
        SAXParserFactory parserFactory = createSAXParserFactory();
        parserFactory.setValidating(false); // add this line

更新：没有必要 - 使用属性net.sf.jasperreports.compiler.xml.validation =假，而不是

UPDATE: no need for - use property net.sf.jasperreports.compiler.xml.validation=false instead

模式（net.sf.jasperreports.engine.xml.BaseSaxParserFactory）的禁用配置：
评法的完全体：
    保护无效configureParser（SAXParser的解析器）抛出的SAXException

disable configuration of schema (net.sf.jasperreports.engine.xml.BaseSaxParserFactory): comment complete body of method: protected void configureParser(SAXParser parser) throws SAXException

创建项目AndroidRepackage，创建一个包my.beans，放在java.beans.PropertyDescriptor中（rt.jar中的解压缩源）那里的资源文件，并解决了大量的编译器的问题（太很多这里列出）

Create the Project "AndroidRepackage", create a package for my.beans, put in there the sourcefile of java.beans.PropertyDescriptor (unzip source of rt.jar) and solve a lots of compiler-problems (too much to list in here)

获取公地的BeanUtils-1.8.3，解压org.apache.commons.beanutils.BeanUtils.java和org.apache.commons.beanutils.MethodUtils.java来源在你的AndroidRepackage - 项目和解决了大量的编译器问题（太多这里列出）

Get The Source for commons-beanutils-1.8.3, unzip org.apache.commons.beanutils.BeanUtils.java and org.apache.commons.beanutils.MethodUtils.java in your "AndroidRepackage"-Project and solve a lots of compiler-problems (too much to list in here)

更改为的BeanUtils java.beans中所有引用到my.beans

change all references to java.beans in beanutils into my.beans

=>问题是：BeanUtils的使用sun.reflet *这是原产于每个平台。
来源$ C ​​$ C可以发现，而是沿着当地人自然它必须是C.
在这一点上，我决定去寻找另一种方式......

=> PROBLEM is: beanutils are using sun.reflet.* which is native for every platform. Source code can be found, but along natives nature it has to be C. At this point I decided to look for another way... ...

第二个尝试：
事实上，上面只希望加载从XML报表时会导致本地code描述的方法，我想就在API创建我的JasperDesing
结果=>问题是：JasperReports的创建* .java文件并调用调用Runtime.getRuntime（）EXEC（javac的）...

2nd try: In fact that the approach described above hopefully only leads to native code when loading the report from an XML, I tried to create my JasperDesing right over the API
=> PROBLEM is: JasperReports creates *.java files and calls Runtime.getRuntime().exec("javac")...

这些问题现在：有没有编译器直接在设备上使用和如何在不生根的设备执行这样的
- >问如何实现Java编译器和DEX转换器转换成Android应用

The questions are now: "Is there any compiler to use directly on the device" AND "how to execute such without rooting the device -> asked in How to implement a Java compiler and DEX converter into an Android app?

O.K：JasperReports的支持从JDT编译器，它只是要在类路径中。因此，将它添加到它引出了下一个问题项目的libs文件夹：java.lang.Object中不能被解析

O.K.: JasperReports supports the compiler from JDT, it just has to be in the classpath. So adding it to the libs folder of the project it leads to the next problem: java.lang.Object could not be resolved!

但是，这真的是相当一个问题：财产jasper.reports.compile.class.path由JasperReports的规定将被JDT编译器被忽略 - 因此如何从Android框架加载类？
随着特殊类加载器我din't成功了，每天经过试验，试图哭我决定延长JRJdtCompiler和覆盖的方法compileUnits。在那里我会在上面链接测试使用批处理编译org.eclipse.jdt.internal.compiler.batch.Main等。当我完成的工作我会后做的就是它运行的是什么...

But that's really quite a problem: The property "jasper.reports.compile.class.path" provided by JasperReports will be ignored by the JDT compiler - so how to load the classes from android framework? With an special classloader I din't succeeded, after a day testing, trying and crying I decided to extend the JRJdtCompiler and override the method compileUnits. there I will use the batch compiler org.eclipse.jdt.internal.compiler.batch.Main like in the test linked above. When I've finished the work I will post what to do to get it running...

问题：
JasperReports的进口java.awt.GraphicsEnvironment其中进口sun.java2d - >这是原产code =>同样的问题，像上面的XML解析...

PROBLEM: JasperReports imports java.awt.GraphicsEnvironment which imports sun.java2d -> which is native code => same problem like parsing from xml above...

结论：
它是否会在Android上工作，还有很多工作要做，一些本地库港口。对于我来说，这不适合，我会回落到使用iText的创建PDF文件。

conclusion: If it will work on android there is a lot of work to be done and some native libs to port. For me that's not suitable and i will fall back to use iText to create the PDFs.

或许在某个时候谷歌将supoort AWT的包，但我不相信它。

Perhaps in sometime Google will supoort the awt package, but i don't believe it.

反正我已经做了所有的工作是非生产性的，但很有趣，因为这是我的第一个Android项目，我学到了很多东西，我可以希望使用其他时间：）

Anyway: all work I've done was unproductive but very interesting because this is my first android project and I learned much which I can hopefully use another time :)

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