我正在开发一款 Android 应用程序。它需要能够拍照并将该照片发送到网页。以下是代码:
HttpClient httpclient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost("someurl");
MultipartEntity multipartEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE); //Here throws the exception
multipartEntity.addPart("data",
new InputStreamBody(
new ByteArrayInputStream(byteArray),
"image/png"));
multipartEntity.addPart("caption", new StringBody(filename));
httpPost.setEntity((HttpEntity) multipartEntity);
我在我的ClassPath中有所需的库(httpclient、apache-mime4j-core、httpcore和httpmime)。编译时没有显示任何错误。但是当我运行项目时,它会显示“java.lang.NoClassDefFoundError: org.apache.http.entity.mime.MultipartEntity”,但这个类确实存在于jar包中(in httpMime, exactly)。以下是完整的跟踪信息:
04-09 10:21:59.362: E/AndroidRuntime(10352): FATAL EXCEPTION: main
04-09 10:21:59.362: E/AndroidRuntime(10352): java.lang.NoClassDefFoundError: org.apache.http.entity.mime.MultipartEntity
04-09 10:21:59.362: E/AndroidRuntime(10352): at com.publidirecta.AppAzafata.IniciarGPSActivity2.enviarImagen(IniciarGPSActivity2.java:206)
04-09 10:21:59.362: E/AndroidRuntime(10352): at com.publidirecta.AppAzafata.IniciarGPSActivity2.onActivityResult(IniciarGPSActivity2.java:196)
04-09 10:21:59.362: E/AndroidRuntime(10352): at android.app.Activity.dispatchActivityResult(Activity.java:3908)
04-09 10:21:59.362: E/AndroidRuntime(10352): at android.app.ActivityThread.deliverResults(ActivityThread.java:2549)
04-09 10:21:59.362: E/AndroidRuntime(10352): at android.app.ActivityThread.handleSendResult(ActivityThread.java:2595)
04-09 10:21:59.362: E/AndroidRuntime(10352): at android.app.ActivityThread.access$2000(ActivityThread.java:121)
04-09 10:21:59.362: E/AndroidRuntime(10352): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:973)
04-09 10:21:59.362: E/AndroidRuntime(10352): at android.os.Handler.dispatchMessage(Handler.java:99)
04-09 10:21:59.362: E/AndroidRuntime(10352): at android.os.Looper.loop(Looper.java:130)
04-09 10:21:59.362: E/AndroidRuntime(10352): at android.app.ActivityThread.main(ActivityThread.java:3701)
04-09 10:21:59.362: E/AndroidRuntime(10352): at java.lang.reflect.Method.invokeNative(Native Method)
04-09 10:21:59.362: E/AndroidRuntime(10352): at java.lang.reflect.Method.invoke(Method.java:507)
04-09 10:21:59.362: E/AndroidRuntime(10352): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866)
04-09 10:21:59.362: E/AndroidRuntime(10352): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:624)
04-09 10:21:59.362: E/AndroidRuntime(10352): at dalvik.system.NativeStart.main(Native Method)
我已经尝试了此任务使用的所有旧版本的jars,但仍然无法工作。这些jars出现在Android项目的“引用库”中。
我尝试了一切。有人知道为什么会发生这种情况吗?我快要跳窗了。
提前感谢您!