android - Json 从 URL 在 android 中解析

Question

我正在从 URL 获取 json，但在解析时出错。它说的是非法字符。你们能指出罪魁祸首在哪里吗？我的代码

public String GetJString(String url) {

    // Making HTTP request
    try {
        // defaultHttpClient
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);

        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity httpEntity = httpResponse.getEntity();
        is = httpEntity.getContent();          

    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                is, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        is.close();
        json = sb.toString();
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }

    Log.d("cstch",json);

        return json;

}

错误信息

04-08 15:26:43.393: E/AndroidRuntime(1122): FATAL EXCEPTION: AsyncTask #2
04-08 15:26:43.393: E/AndroidRuntime(1122): java.lang.RuntimeException: An error occured while executing doInBackground()
04-08 15:26:43.393: E/AndroidRuntime(1122):     at android.os.AsyncTask$3.done(AsyncTask.java:299)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at java.util.concurrent.FutureTask$Sync.innerSetException(FutureTask.java:273)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at java.util.concurrent.FutureTask.setException(FutureTask.java:124)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:307)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at java.util.concurrent.FutureTask.run(FutureTask.java:137)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at java.lang.Thread.run(Thread.java:856)
04-08 15:26:43.393: E/AndroidRuntime(1122): Caused by: java.lang.IllegalArgumentException: Illegal character in query at index 124: http://smkamran.com/~tvinfo/tvguide/box/getprogramlist?mediagroupId=9c476522-d771-4fcd-ae21-34b302c04e46&dateBegin=2013-04-08 00:00:00&dateEnd=2013-04-08 23:59:00&channelList=RBB
04-08 15:26:43.393: E/AndroidRuntime(1122):     at java.net.URI.create(URI.java:727)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at org.apache.http.client.methods.HttpPost.<init>(HttpPost.java:79)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at com.smkamran.germantv.JSONParser.GetJString(JSONParser.java:80)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at com.smkamran.germantv.ChannelDetails$GetDataFromServer.doInBackground(ChannelDetails.java:267)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at com.smkamran.germantv.ChannelDetails$GetDataFromServer.doInBackground(ChannelDetails.java:1)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at android.os.AsyncTask$2.call(AsyncTask.java:287)
04-08 15:26:43.393: E/AndroidRuntime(1122):     at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)

Answer 1

根据错误消息，它是您的 URL 查询字符串部分中的非法字符。你应该使用 URLEncoder.encode()在该 URL 上。