尝试将Apache POI移植到Android

Question

我正在寻找一个轻量级的poi-3.8.jar来在Android(私有)应用中使用它.由于某种原因,我似乎无法在APK中安装整个1.7Mb jar(反正这样做也是错误的)因为我只是在寻找doc - > html和xls - > html功能,我不太确定我需要整个jar文件.

我花了几个小时试图弄清楚如何在poi/hwpf/converter中提取org.apache.poi.hwpf.converter.WordToHtmlExtracter.java,但看起来它正在使用很多其他东西.即使这并不让我感到惊讶,我想也许这里有人会知道我可以摆脱哪些包装以使罐子更小.我会很高兴花更多的时间在这上面,除非有人告诉我这是浪费时间,并且需要将源文件中的所有内容转换为html文件.

我不需要任何显示任何内容的东西,我只需要html的"简单"文档(如果可能的话,还需要xls到html)功能.我不需要任何与PDF,powerpoint,outlook等相关的东西.

我很乐意分享我发现的一切

干杯

Answer 1

好吧,我能够完成我在这里要求的大部分内容.那是导入jar文件.我至少有两种问题: - Eclipse上没有足够的RAM,这使得我的类大部分时间都崩溃了(通过调整Eclipse.ini中的Xmx和xms值来修复) - 每个DEX文件的64k方法限制复杂.我不得不将所有必需的POI罐分成几个DEX文件.(我是按照Android博客的教程做到的:http://android-developers.blogspot.com/2011/07/custom-class-loading-in-dalvik.html)

我的问题的真正答案是:"是的,你需要罐子里的所有东西".我使它适用于基本的"非打开的xml"文件.我的应用程序很好地转换为HTML,而且它也足够快.

另外,我还试图用"打开XML"文件做同样的事情,而且它要复杂得多.我的小项目没有做它应该做的事情,我在初始化XMLBeans类时遇到了一些奇怪的异常.这是我的踪迹(对不起丑陋):

12-19 12:07:10.790: W/dalvikvm(13385): Exception
Ljava/lang/RuntimeException; thrown while initializing
Lorg/apache/xmlbeans/impl/regex/SchemaRegularExpression;
12-19 12:07:10.790: W/dalvikvm(13385): Exception
Ljava/lang/ExceptionInInitializerError; thrown while initializing
Lorg/apache/xmlbeans/impl/schema/BuiltinSchemaTypeSystem;
12-19 12:07:10.790: D/dalvikvm(13385): Method.invoke() on bad class
Lorg/apache/xmlbeans/impl/schema/BuiltinSchemaTypeSystem; failed
12-19 12:07:10.790: W/dalvikvm(13385): Exception
Ljava/lang/ExceptionInInitializerError; thrown while initializing
Lorg/apache/xmlbeans/XmlBeans;
12-19 12:07:10.790: W/System.err(13385):
java.lang.reflect.InvocationTargetException
12-19 12:07:10.790: W/System.err(13385):    at
java.lang.reflect.Method.invokeNative(Native Method)
12-19 12:07:10.790: W/System.err(13385):    at
java.lang.reflect.Method.invoke(Method.java:491)
12-19 12:07:10.790: W/System.err(13385):    at
t.fze.TestOfficeAndroidActivity.onCreate(TestOfficeAndroidActivity.java:55)
12-19 12:07:10.790: W/System.err(13385):    at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
12-19 12:07:10.790: W/System.err(13385):    at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712)
12-19 12:07:10.790: W/System.err(13385):    at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764)
12-19 12:07:10.790: W/System.err(13385):    at
android.app.ActivityThread.access$1500(ActivityThread.java:122)
12-19 12:07:10.790: W/System.err(13385):    at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002)
12-19 12:07:10.790: W/System.err(13385):    at
android.os.Handler.dispatchMessage(Handler.java:99)
12-19 12:07:10.790: W/System.err(13385):    at
android.os.Looper.loop(Looper.java:132)
12-19 12:07:10.790: W/System.err(13385):    at
android.app.ActivityThread.main(ActivityThread.java:4025)
12-19 12:07:10.790: W/System.err(13385):    at
java.lang.reflect.Method.invokeNative(Native Method)
12-19 12:07:10.790: W/System.err(13385):    at
java.lang.reflect.Method.invoke(Method.java:491)
12-19 12:07:10.790: W/System.err(13385):    at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
12-19 12:07:10.790: W/System.err(13385):    at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
12-19 12:07:10.790: W/System.err(13385):    at
dalvik.system.NativeStart.main(Native Method)
12-19 12:07:10.790: W/System.err(13385): Caused by:
org.apache.poi.POIXMLException:
java.lang.reflect.InvocationTargetException
12-19 12:07:10.790: W/System.err(13385):    at
org.apache.poi.xssf.usermodel.XSSFFactory.createDocumentPart(XSSFFactory.java:62)
12-19 12:07:10.790: W/System.err(13385):    at
org.apache.poi.POIXMLDocumentPart.read(POIXMLDocumentPart.java:414)
12-19 12:07:10.790: W/System.err(13385):    at
org.apache.poi.POIXMLDocument.load(POIXMLDocument.java:155)
12-19 12:07:10.790: W/System.err(13385):    at
org.apache.poi.xssf.usermodel.XSSFWorkbook.<init>(XSSFWorkbook.java:174)
12-19 12:07:10.790: W/System.err(13385):    at
org.apache.poi.ss.usermodel.WorkbookFactory.create(WorkbookFactory.java:63)
12-19 12:07:10.790: W/System.err(13385):    at
org.apache.poi.ss.examples.html.ToHtml.create(ToHtml.java:139)
12-19 12:07:10.790: W/System.err(13385):    at
org.apache.poi.ss.examples.html.ToHtml.create(ToHtml.java:123)
12-19 12:07:10.790: W/System.err(13385):    ... 16 more
12-19 12:07:10.790: W/System.err(13385): Caused by:
java.lang.reflect.InvocationTargetException
12-19 12:07:10.790: W/System.err(13385):    at
java.lang.reflect.Constructor.constructNative(Native Method)
12-19 12:07:10.790: W/System.err(13385):    at
java.lang.reflect.Constructor.newInstance(Constructor.java:416)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.poi.xssf.usermodel.XSSFFactory.createDocumentPart(XSSFFactory.java:60)
12-19 12:07:10.800: W/System.err(13385):    ... 22 more
12-19 12:07:10.800: W/System.err(13385): Caused by:
java.lang.ExceptionInInitializerError
12-19 12:07:10.800: W/System.err(13385):    at
org.openxmlformats.schemas.drawingml.x2006.main.ThemeDocument$Factory.parse(ThemeDocument.java:71)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.poi.xssf.model.ThemesTable.<init>(ThemesTable.java:38)
12-19 12:07:10.800: W/System.err(13385):    ... 25 more
12-19 12:07:10.800: W/System.err(13385): Caused by:
java.lang.ExceptionInInitializerError
12-19 12:07:10.800: W/System.err(13385):    at
java.lang.reflect.Method.invokeNative(Native Method)
12-19 12:07:10.800: W/System.err(13385):    at
java.lang.reflect.Method.invoke(Method.java:491)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.XmlBeans.getNoType(XmlBeans.java:856)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.XmlBeans.<clinit>(XmlBeans.java:881)
12-19 12:07:10.800: W/System.err(13385):    ... 27 more
12-19 12:07:10.800: W/System.err(13385): Caused by:
java.lang.ExceptionInInitializerError
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.schema.BuiltinSchemaTypeSystem.fillInType(BuiltinSchemaTypeSystem.java:1025)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.schema.BuiltinSchemaTypeSystem.<clinit>(BuiltinSchemaTypeSystem.java:223)
12-19 12:07:10.800: W/System.err(13385):    ... 31 more
12-19 12:07:10.800: W/System.err(13385): Caused by:
java.lang.RuntimeException: Installation Problem???  Couldn't load
messages: Can't find resource for bundle
'org.apache.xmlbeans.impl.regex.message_fr_FR', key ''
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.regex.RegexParser.setLocale(RegexParser.java:88)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.regex.RegexParser.<init>(RegexParser.java:78)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.regex.ParserForXMLSchema.<init>(ParserForXMLSchema.java:28)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.regex.RegularExpression.setPattern(RegularExpression.java:2996)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.regex.RegularExpression.setPattern(RegularExpression.java:3009)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.regex.RegularExpression.<init>(RegularExpression.java:2975)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.regex.SchemaRegularExpression.<init>(SchemaRegularExpression.java:27)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.regex.SchemaRegularExpression.<init>(SchemaRegularExpression.java:23)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.regex.SchemaRegularExpression$1.<init>(SchemaRegularExpression.java:44)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.regex.SchemaRegularExpression.buildKnownPatternMap(SchemaRegularExpression.java:43)
12-19 12:07:10.800: W/System.err(13385):    at
org.apache.xmlbeans.impl.regex.SchemaRegularExpression.<clinit>(SchemaRegularExpression.java:38)
12-19 12:07:10.800: W/System.err(13385):    ... 33 more