Java Android多部分实体导致应用程序崩溃

我目前正在开发一款android应用程序，它允许用户将图像上传到我的服务器。我是android开发的新手，所以在使用Http MultiPartEntity时，目前面临将文件发送到服务器的问题

下面是我用来将文件上传到服务器的代码 私有类UploadFileToServer扩展异步任务{

    @Override
    protected String doInBackground(Void... params) {
        return uploadFile();
    }

    @SuppressWarnings("deprecation")
    private String uploadFile() {
        String responseString = null;

        //Change URL here
        String FILE_UPLOAD_URL = SERVER_SUBMIT_URL;

        try {

            HttpClient client = new DefaultHttpClient();
            HttpPost post = new HttpPost(FILE_UPLOAD_URL);
            MultipartEntity reqEntity = new MultipartEntity();

            File file1 = new File(filePath1);
            FileBody bin1 = new FileBody(file1);
            reqEntity.addPart("image1", bin1);

            //Extras
            reqEntity.addPart("command", new StringBody("uploadImages"));

            post.setEntity(reqEntity);
            HttpResponse response = client.execute(post);
            resEntity = response.getEntity();

            responseString = EntityUtils.toString(resEntity);

            return responseString;

        } catch (Exception e) {
            Log.v(TAG, e.toString());
            responseString = e.toString();
        }

        return responseString;
    }

    @Override
    protected void onPostExecute(String result) {

        //Assuming JSON response From server
        // {"status": true, "ideaID" : 1}
        try{
            JSONObject json = new JSONObject(result);
            boolean status = json.getBoolean("status");
            if(status){
                showToast("Successfully Uploaded Images");

            }else{
                showToast("Image Uploading Failed");
            }

        }catch (Exception e) {
            showToast("Image Uploading Failed");
            Log.e(TAG, "Response from server: " + result + " " + e.getMessage());
        }
        // showing the server response in an alert dialog
        super.onPostExecute(result);
    }
}

我想，“HttpResponse response=client.execute（post）；”这行就是应用程序崩溃的地方

下面是日志中显示的错误

11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway /AndroidRuntime: FATAL EXCEPTION: AsyncTask #5
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime: java.lang.RuntimeException: An error occured while executing doInBackground()
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at android.os.AsyncTask$3.done(AsyncTask.java:299)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at java.util.concurrent.FutureTask.run(FutureTask.java:239)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at java.lang.Thread.run(Thread.java:838)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:  Caused by: java.lang.NoSuchFieldError: org.apache.http.message.BasicHeaderValueFormatter.INSTANCE
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.entity.ContentType.toString(ContentType.java:153)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.entity.mime.MultipartFormEntity.<init>(MultipartFormEntity.java:53)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.entity.mime.MultipartEntityBuilder.buildEntity(MultipartEntityBuilder.java:236)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.entity.mime.MultipartEntity.getEntity(MultipartEntity.java:119)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.entity.mime.MultipartEntity.isChunked(MultipartEntity.java:138)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.protocol.RequestContent.process(RequestContent.java:79)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.protocol.BasicHttpProcessor.process(BasicHttpProcessor.java:290)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.protocol.HttpRequestExecutor.preProcess(HttpRequestExecutor.java:167)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:413)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at com.example.grow.dubaiway.ImageActivity$UploadFileToServer.uploadFile(ImageActivity.java:197)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at com.example.grow.dubaiway.ImageActivity$UploadFileToServer.doInBackground(ImageActivity.java:156)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at com.example.grow.dubaiway.ImageActivity$UploadFileToServer.doInBackground(ImageActivity.java:137)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at android.os.AsyncTask$2.call(AsyncTask.java:287)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at java.util.concurrent.FutureTask.run(FutureTask.java:234)
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230) 
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) 
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) 
11-22 00:24:41.341 8203-11792/com.example.grow.dubaiway E/AndroidRuntime:     at java.lang.Thread.run(Thread.java:838) 

---

任何帮助都将不胜感激。谢谢您可以尝试使用MultipartEntityBuilder

try
{
    File file1 = new File(filePath1);

    HttpClient client = new DefaultHttpClient();

    MultipartEntityBuilder entBuilder = MultipartEntityBuilder.create();
    entBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
    entBuilder.addBinaryBody(file1.getName(), file1);

    //Extras
    entBuilder.addPart("command", new StringBody("uploadImages"));

    /*
        If you need to send more files...

        entBuilder.addBinaryBody(file2.getName(), file2);
        entBuilder.addBinaryBody(file3.getName(), file3);
        ...
    */

    HttpEntity entity = entBuilder.build();
    HttpPost post = new HttpPost(FILE_UPLOAD_URL);
    post.setEntity(entity);

    HttpResponse response = client.execute(post);
    HttpEntity httpEntity = response.getEntity();

    return EntityUtils.toString(httpEntity);
}
catch(Exception e)
{
    e.printStackTrace();
}

您需要在gradle中添加依赖项

compile group: 'org.apache.httpcomponents' , name: 'httpclient-android' , version: '4.3.5'
compile (group: 'org.apache.httpcomponents' , name: 'httpmime' , version: '4.3.5') {
    exclude module: 'org.apache.httpcomponents:httpclient'
}

但我认为最好从代码中删除http apache依赖项（如HttpClient），就像谷歌从Android 6（api 23）中删除它一样

Android 6.0版本取消了对Apache HTTP客户端的支持 您的应用程序正在使用此客户端，目标是Android 2.3（API级别9）或 更高，使用HttpURLConnection类 高效，因为它通过透明 压缩和响应缓存，并将功耗降至最低

---

HttpClient

方法在即将发布的版本中被弃用，所以为什么不使用

Volley

或

HttpURLConnection

来发出http请求@ρ∑ρρK Volley也使用Apache的库：）嘿，伙计们，谢谢你们的反馈。尽管如此，我还是通过使用旧版本的库修复了这个问题。切换到版本4.3.1解决了d我解决了这个问题，现在它工作得很好。我们还可以将多部分实体与进度发布器一起使用。无论如何，谢谢。：）

compile group: 'org.apache.httpcomponents' , name: 'httpclient-android' , version: '4.3.5'
compile (group: 'org.apache.httpcomponents' , name: 'httpmime' , version: '4.3.5') {
    exclude module: 'org.apache.httpcomponents:httpclient'
}