本文介绍了什么是org.json.JSONException的原因:网址没有价值的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

这是在code .ofcourse的网址传回的数据。

 保护无效showList(){
    尝试{
        JSONObject的jsonObj =新的JSONObject(myJSON);
        人民= jsonObj.getJSONArray(TAG_RESULTS);        的for(int i = 0; I< peoples.length();我++){
            JSONObject的C = peoples.getJSONObject(I)
            字符串ID = c.getString(TAG_ID);
            字符串URL = c.getString(TAG_URL);
            Listitem.add(新列表项(ID,URL));
        }        GridViewAdapter适配器=新GridViewAdapter(这一点,R.layout.grid_item_layout,列表项);
     // gridView.setAdapter(gridAdapter);       list.setAdapter(适配器);    }赶上(JSONException E){
        e.printStackTrace();
    }

asycntask和网址

 保护字符串doInBackground(字符串... PARAMS){
                DefaultHttpClient的HttpClient =新DefaultHttpClient(新BasicHttpParams());
                HttpPost httppost =新HttpPost(http://justedhak.comlu.com/get-data.php);                //取决于你的Web服务
                httppost.setHeader(内容类型,应用/ JSON);                为InputStream的InputStream = NULL;
                字符串结果= NULL;
                尝试{
                    HTT presponse响应= httpclient.execute(httppost);
                    HttpEntity实体= response.getEntity();                    的InputStream = entity.getContent();
                    // JSON默认为UTF-8
                    读者的BufferedReader =新的BufferedReader(新的InputStreamReader(InputStream中,UTF-8),8);
                    StringBuilder的SB =新的StringBuilder();                    串线= NULL;
                    而((行= reader.readLine())!= NULL)
                    {
                        sb.append(行+\\ n);
                    }
                    结果= sb.toString();
                }赶上(例外五){
                    //哎呀
                }
                最后{
                    尝试{如果(InputStream的!= NULL)inputStream.close();}赶上(例外挤){}
                }
                返回结果;
            }


解决方案

您的网址是,你没,T提到的任何JSON API从它数据u必须做这样的事情
...

this is the code .ofcourse the url is returning data.

protected void showList(){
    try {
        JSONObject jsonObj = new JSONObject(myJSON);
        peoples = jsonObj.getJSONArray(TAG_RESULTS);

        for(int i=0;i<peoples.length();i++){
            JSONObject c = peoples.getJSONObject(i);
            String id = c.getString(TAG_ID);
            String url = c.getString(TAG_URL);
            Listitem.add(new Listitem(id,url));
        }

        GridViewAdapter adapter = new GridViewAdapter(this, R.layout.grid_item_layout, Listitem);
     //   gridView.setAdapter(gridAdapter);

       list.setAdapter(adapter);

    } catch (JSONException e) {
        e.printStackTrace();
    }

asycntask and url

 protected String doInBackground(String... params) {
                DefaultHttpClient httpclient = new DefaultHttpClient(new BasicHttpParams());
                HttpPost httppost = new HttpPost("http://justedhak.comlu.com/get-data.php");

                // Depends on your web service
                httppost.setHeader("Content-type", "application/json");

                InputStream inputStream = null;
                String result = null;
                try {
                    HttpResponse response = httpclient.execute(httppost);
                    HttpEntity entity = response.getEntity();

                    inputStream = entity.getContent();
                    // json is UTF-8 by default
                    BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8"), 8);
                    StringBuilder sb = new StringBuilder();

                    String line = null;
                    while ((line = reader.readLine()) != null)
                    {
                        sb.append(line + "\n");
                    }
                    result = sb.toString();
                } catch (Exception e) {
                    // Oops
                }
                finally {
                    try{if(inputStream != null)inputStream.close();}catch(Exception squish){}
                }
                return result;
            }
解决方案

Your url is http://justedhak.comlu.com/get-data.php", you didn,t mentioned any json api to get data from it u must do something likehttp://justedhak.comlu.com/get-data.php/apiName?param1=...

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08-24 12:10