JSONObject urls = new JSONObject(); urls.put("url1", "http://www.example.com/page1"); urls.put("url2", "http://www.example.com/page2"); 打印urls应该为什么结果

如果你直接打印 `urls` 这个 JSONObject 对象，那么输出的应该是一个 JSON 字符串，格式类似于：

{"url1":"http://www.example.com/page1","url2":"http://www.example.com/page2"}

注意，这只是一个字符串，而不是一个 Java 对象。如果你想获取 JSONObject 对象中的某个值，应该使用 `get()` 方法，例如：

String url1 = urls.get("url1").toString();
String url2 = urls.get("url2").toString();
System.out.println(url1);
System.out.println(url2);

这样就可以分别输出两个 URL。

相关问题

下面android代码是上传的照片，现在要求上传完后吧照片从相册里删掉，怎么做？ private void doSubmitUpload_W() { Map<String, Object> uploadparams = null; try { if ((mPgDialog != null) && mPgDialog.isShowing()) { mPgDialog.dismiss(); } mPgDialog = createPhotoDialog_W(R.string.photo_uploading_and_wait); mPgDialog.show(); uploadCallback_w = new AjaxCallback<JSONObject>() { @Override public void callback(String url, JSONObject json, AjaxStatus status) { if ((mPgDialog != null) && mPgDialog.isShowing()) { TakeTxPhotoActivity.this.mPgDialog.dismiss(); } // 解析结果 TakeTxPhotoActivity.this.parseUploadResult_w(url, json, status); } }; Long staffId = SessionManager.getInstance().getStaffId() == null?-1L:SessionManager.getInstance().getStaffId(); uploadparams = new HashMap<String, Object>();// ParamHelper.buildJSONParam(URLs.UPLOADFILE_API,json); byte[] photots = Bitmap2Bytes(ImageUtils.getBitmapByPath(mWorkAdapter.get( curPhotoPos_W).getThumbnailPath())); uploadparams.put("photoFile2",photots); uploadparams.put("StaffId", staffId); uploadparams.put("StaffName", session.getStaffInfo().getStaffName()); uploadparams.put("OrderID", orderId); uploadparams.put("WorkOrderID", workOrderId); uploadparams.put("TypeName", "WORK"); uploadparams.put("photosType", mWorkAdapter.get(curPhotoPos_W).getPhotosType()); Log.e(TAG, "请求参数json:" + uploadparams.toString()); // 异步网络请求 aQuery.ajax(BaseURLs.UPLOAD_KT_PHOTO, uploadparams, JSONObject.class, uploadCallback_w); } catch (Exception ex) { AlertUtils.showAlert(TakeTxPhotoActivity.this, R.string.opt_prompt, R.string.unknown_error); ex.printStackTrace(); } }

您可以在上传照片的回调方法中添加删除照片的逻辑。在`callback`方法中，您可以使用以下代码删除照片：

File photoFile = new File(mWorkAdapter.get(curPhotoPos_W).getThumbnailPath());
boolean deleted = photoFile.delete();
if (deleted) {
    Log.e(TAG, "照片删除成功");
} else {
    Log.e(TAG, "照片删除失败");
}

将上面的代码添加到`callback`方法的开始部分，即可在上传完毕后删除照片。请确保`mWorkAdapter.get(curPhotoPos_W).getThumbnailPath()`返回的是照片文件的路径。

在网结赛口 htp-l192.168.1.100.8080/newsjretnewslist 中提供了如下所示的 1ON 囊組德式的返回数据: [[id:1001,"utie":"程序员因写代码太亂被系害","detai":"凶手是死者同奪, 维护死者代码时完全看不重而箱下茶 手"," comment":16359,"image":"htp-//192.168.1.100.8080/news/images/6.ipg) 请编写程序, 访间该接口获取缴播, 解析后将数据显示到界面的控件上, 同时将數据保存 廉中.

以下是一个简单的Android代码示例，用于从指定URL获取JSON数据并将其解析并显示在ListView上：

public class MainActivity extends AppCompatActivity {
    private ListView listView;
    private List<News> newsList = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listView = findViewById(R.id.list_view);
        new GetDataTask().execute("http://192.168.1.100:8080/news/newslist");

        // TODO: 将数据保存到本地
    }

    private void showData(List<News> newsList) {
        NewsAdapter adapter = new NewsAdapter(this, newsList);
        listView.setAdapter(adapter);
    }

    private class GetDataTask extends AsyncTask<String, Void, String> {
        @Override
        protected String doInBackground(String... urls) {
            String result = "";
            try {
                URL url = new URL(urls[0]);
                HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                connection.setRequestMethod("GET");
                connection.setConnectTimeout(5000);
                connection.setReadTimeout(5000);
                if (connection.getResponseCode() == 200) {
                    InputStream in = connection.getInputStream();
                    ByteArrayOutputStream out = new ByteArrayOutputStream();
                    byte[] buffer = new byte[1024];
                    int len;
                    while ((len = in.read(buffer)) != -1) {
                        out.write(buffer, 0, len);
                    }
                    result = out.toString();
                    in.close();
                    out.close();
                }
                connection.disconnect();
            } catch (Exception e) {
                e.printStackTrace();
            }
            return result;
        }

        @Override
        protected void onPostExecute(String result) {
            try {
                JSONArray jsonArray = new JSONArray(result);
                for (int i = 0; i < jsonArray.length(); i++) {
                    JSONObject jsonObject = jsonArray.getJSONObject(i);
                    News news = new News();
                    news.setId(jsonObject.getInt("id"));
                    news.setTitle(jsonObject.getString("title"));
                    news.setContent(jsonObject.getString("content"));
                    news.setCommentCount(jsonObject.getInt("comment"));
                    news.setImageUrl(jsonObject.getString("image"));
                    newsList.add(news);
                }
                showData(newsList);
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    }
}

这里使用了AsyncTask来进行网络请求和数据的解析，并将解析后的数据通过自定义的Adapter显示在ListView上。在TODO处，可以将数据保存到本地。这里只是一个简单的示例，实际应用中还需要考虑异常情况和网络请求的优化等问题。