通过okhttp3上传文件

所以我自己回答这个问题。

因此，我首先将输出流打开到一个临时文件。

imageTempUploadfile=new File(Environment.getExternalStorageDirectory()+"/inpaint/");if(!imageTempUploadfile.exists())    imageTempUploadfile.mkdirs();    imageTempUploadfile2 = new File(Environment.getExternalStorageDirectory() + "/inpaint/"+"file"+".docx");OutputStream outputTempFileStream = new FileOutputStream(imageTempUploadfile2);

扩展名取决于mime类型。您可以通过以下方式找到mime类型

@Overridepublic void onActivityResult(int requestCode, int resultCode, Intent data) {    // TODO Auto-generated method stub    super.onActivityResult(requestCode, resultCode, data);    if(resultCode==RESULT_OK && requestCode==0){        Log.d("uri data",""+data.getData());        String mimetype = context.getContentResolver().getType(data.getData());        selectedFileUri = data.getData();

现在从文件读取并将其内容写入临时文件

selectedFileInputStream = getContentResolver().openInputStream(selectedFileUri);

现在写入文件

try {    try {        byte[] buffer = new byte[4 * 1024]; // or other buffer size        int read;        while ((read = selectedFileInputStream.read(buffer)) != -1) { outputTempFileStream.write(buffer, 0, read);        }        outputTempFileStream.flush();    } finally {        outputTempFileStream.close();    }} catch (Exception e) {    e.printStackTrace(); // handle exception, define IOException and others}

最后

MultipartUtility multipart = new MultipartUtility(urlLeaveFormApply, charset);multipart.addFilePart("data[User][user_picture]", imageTempUploadfile2);

成功之后的最后

imageTempUploadfile2.delete();