多部分实体文件上传 java.lang.ArrayIndexOutOfBoundsException

Question

带有文件数组的多部分实体文件上传。 我在下面提到了错误代码，请帮我解决这个问题。异常 java.lang.ArrayIndexOutOfBoundsException: length=2;指数=2。 提前致谢。

代码：

try{
        int i = 0;
        HttpEntity httpEntity = null;
        HttpResponse httpResponse = null;
        HttpClient httpClient = new DefaultHttpClient();
        int selectedImgLength = selectedItems.size();
        File[] mfile = new File[selectedImgLength];
        for( i = 0; i<selectedImgLength;i++){
            //mfile[i]= selectedItems.get(i);// Error InCompatiable type
            mfile[i] = new File(selectedItems.get(i));
        }
        HttpPost httpPost = new HttpPost(url);
        MultipartEntityBuilder entityBuilder = MultipartEntityBuilder.create();
        entityBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
        entityBuilder.addPart( "userfile[" + i + "]", new FileBody(mfile[i]));
        HttpEntity entity = entityBuilder.build();
        httpPost.setEntity(entity);

        httpResponse = httpClient.execute(httpPost);
        httpEntity = httpResponse.getEntity();
        response = EntityUtils.toString(httpEntity);
        System.out.println("POST IMAGE Response"+response);
    }catch(Exception e){e.printStackTrace();}

Answer 1

当你这样做时

entityBuilder.addPart( "userfile[" + i + "]", new FileBody(mfile[i]));

您已经退出了 for 循环，并且 i 的大小已与 selectedImgLength 相等，因此您将得到一个 ArrayIndexOutOfBoundsException

尝试更改，以便将文件添加到 for 循环中的 entityBuilder。