相关疑难解决方法(0)

我正在Android中开发一个应用程序.它必须能够拍照,并将该照片发送到网页.这是代码:

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);

我有我的ClassPath所需的库(httpclient,apache-mime4j-core,httpcore和httpmime).它在编译时没有显示任何错误.但是,当我运行该项目时,它会显示"java.lang.NoClassDefFoundError:org.apache.http.entity.mime.MultipartEntity",但该类存在于jar中(确切地说是在httpMime中).这是完整的痕迹:

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: …