json使用url解析

时间：2013-01-02 06:34:29

标签： android json parsing url

我正在尝试使用url解析json。我可以通过使用Temporary url来实现它，但是当我使用我的主主机url时，json会返回html值吗？

临时网址

(http://md-plesk-web9.webhostbox.net:8880/sitepreview/http/glossymob.asia/Webservice.asmx/SpecificCategory?category=real%20estate&location=Madurai)

我的代码

// url to make request
private static String url = "http://md-plesk-web9.webhostbox.net:8880/sitepreview/http/glossymob.asia/Webservice.asmx/SpecificCategory?category=hotel&location=Madurai";

// JSON Node names
private static final String TAG_MAIN ="hotel";
private static final String TAG_VALUE = "Madurai";
private static final String TAG_ID = "id";
private static final String TAG_CATEGORY = "category";
private static final String TAG_TYPE = "type";
private static final String TAG_NAME = "name";
private static final String TAG_BANNER = "banner";
private static final String TAG_LOGO = "logo";
private static final String TAG_ABOUT = "about";
private static final String TAG_CONTACT = "contact";
private static final String TAG_MAP = "map";

private static final String TAG_MAP_LAT_LONG = "lat_long_1";
private static final String TAG_MAPLATITUDE = "latitude";
private static final String TAG_MAPLONGITUDE = "longitude";
private static final String TAG_CATEGORY_TOTAL = "total";

// contacts JSONArray
JSONArray contacts = null;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    // Hashmap for ListView
    ArrayList<HashMap<String, String>> contactList = new ArrayList<HashMap<String, String>>();

    // Creating JSON Parser instance
    JSONParser jParser = new JSONParser();

    // getting JSON string from URL
    JSONObject json = jParser.getJSONFromUrl(url);
    Log.v("exact string value", json.toString());
    try {

        // Getting Array of Contacts
        JSONObject js= json.getJSONObject(TAG_MAIN);
        int ival = js.getInt(TAG_CATEGORY_TOTAL);
        contacts = js.getJSONArray(TAG_VALUE);
        Log.v("Total:", ""+ival);
        // looping through All Contacts
        for(int i = 0; i < contacts.length(); i++){
            JSONObject c = contacts.getJSONObject(i);

            // Storing each json item in variable
            String id = c.getString(TAG_ID);
            String category = c.getString(TAG_CATEGORY);
            String type = c.getString(TAG_TYPE);
            String name = c.getString(TAG_NAME);
            String banner = c.getString(TAG_BANNER);
            String logo = c.getString(TAG_LOGO);
            String about = c.getString(TAG_ABOUT);
            String contact = c.getString(TAG_CONTACT);

            Log.v("Values:", id+"--"+category+"--"+type+"--"+name+"--"+banner+"--"+logo+"--"+about+"--"+contact);


            // Phone number is agin JSON Object
            JSONObject mapval = c.getJSONObject(TAG_MAP);

            JSONArray con = js.getJSONArray(TAG_VALUE);
            JSONObject mapvalues = con.getJSONObject(0);
            String latitude = mapvalues.getString(TAG_MAPLATITUDE);
            String longitude = mapvalues.getString(TAG_MAPLONGITUDE);
            // creating new HashMap
            HashMap<String, String> map = new HashMap<String, String>();

            // adding each child node to HashMap key => value
            map.put(TAG_ID, id);
            map.put(TAG_CATEGORY, category);
            map.put(TAG_TYPE, type);
            map.put(TAG_NAME, name);
            /*Log.v("Received json values", ""+map.toString());*/
            // adding HashList to ArrayList
            contactList.add(map);
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }

我通过运行它获得的值是精确的json 

01-02 12:03:38.300: V/exact string value(30124): {"hotel":{"total":1,"Madurai":[{"id":"3","logo":"www.glossymob.com\/soli\/MapMadurai\/3_logo_laptop-computer.jpg","category":"Hotel","name":"araas","map":{"lat_long_1":{"longitude":"76.9000","latitude":"8.5000"}},"about":"test","type":"Silver","contact":"test","banner":"www.glossymob.com\/soli\/MapMadurai\/3_banner_laptop-computer.jpg"}]}}
01-02 12:03:38.300: V/Total:(30124): 1
01-02 12:03:38.300: V/Values:(30124): 3--Hotel--Silver--araas--www.glossymob.com/soli/MapMadurai/3_banner_laptop-computer.jpg--www.glossymob.com/soli/MapMadurai/3_logo_laptop-computer.jpg--test--test
  

当我尝试更换它时   主要网址

(http://www.glossymob.asia/Webservice.asmx/SpecificCategory?category=real%20estate&location=Madurai)
  

我得到的值是

01-02 11:07:27.116: V/json string value(29330): <html>
<head> 
   <title>Runtime Error</title>    
<style>         body {font-family:"Verdana";font-weight:normal;font-size: .7em;color:black;}          p {font-family:"Verdana";font-weight:normal;color:black;margin-top: -5px}         b {font-family:"Verdana";font-weight:bold;color:black;margin-top: -5px}         H1 { font-family:"Verdana";font-weight:normal;font-size:18pt;color:red }         H2 { font-family:"Verdana";font-weight:normal;font-size:14pt;color:maroon }         pre {font-family:"Lucida Console";font-size: .9em}         .marker {font-weight: bold; color: black;text-decoration: none;}         .version {color: gray;}         .error {margin-bottom: 10px;}         .expandable { text-decoration:underline; font-weight:bold; color:navy; cursor:hand; }  
  </style>
 </head>
 <body bgcolor="white">    
    <span><H1>Server Error in '/' Application.<hr width=100% size=1 color=silver></H1>            <h2> <i>Runtime Error</i> </h2></span>  
      <font face="Arial, Helvetica, Geneva, SunSans-Regular, sans-serif ">            <b> Description: </b>An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.            <br><br> 
       <b>Details:</b> To enable the details of this specific error message to be viewable on remote machines, please create a &lt;customErrors&gt; tag within a &quot;web.config&quot; configuration file located in the root directory of the current web application. This &lt;customErrors&gt; tag should then have its &quot;mode&quot; attribute set to &quot;Off&quot;.<br><br>      
  <table width=100% bgcolor="#ffffcc">               <tr>                  <td>                      <code><pre>&lt;!-- Web.Config Configuration File --&gt;&lt;configuration&gt;    &lt;system.web&gt;        &lt;customErrors mode=&quot;Off&quot;/&gt;    &lt;/system.web&gt;&lt;/configuration&gt;</pre></code>                  </td>               </tr>            </table>   
     <br>            <b>Notes:</b> The current error page you are seeing can be replaced by a custom error page by modifying the &quot;defaultRedirect&quot; attribute of the application's &lt;customErrors&gt; configuration tag to point to a custom error page URL.<br><br>          
<table width=100% bgcolor="#ffffcc">               <tr>                  <td>                      <code><pre>&lt;!-- Web.Config Configuration File --&gt;&lt;configuration&gt;    &lt;system.web&gt;        &lt;customErrors mode=&quot;RemoteOnly&quot; defaultRedirect=&quot;mycustompage.htm&quot;/&gt;    &lt;/system.web&gt;&lt;/configuration&gt;</pre></code>                  </td>               </tr>      
  </table>            <br>  
</body>
</html>
  

我正在处理那个Xml数据通过在字符串中替换它，我的json返回确切的json字符串值。看看我的JSONParser类。       包com.androidhive.jsonparsingtest; 

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;

import android.util.Log;

public class JSONParser {

static InputStream is = null;
static JSONObject jObj = null;
static String json = "";

// constructor
public JSONParser() {

}

public JSONObject getJSONFromUrl(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) {


            line = line.replace("<?xml version=\"1.0\" encoding=\"utf-8\"?>","");
            line = line.replace("<string xmlns=\"http://tempuri.org/\">","");
            line = line.replace("</string>","");
            Log.v("string value", line);
            sb.append(line);
            //Log.v("sbstring value", sb.toString());
        }
        is.close();
        json = sb.toString();
        Log.v("json string value", json);
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }

    // try parse the string to a JSON object
    try {
        jObj = new JSONObject(json);
    } catch (JSONException e) {
        Log.e("JSON Parser", "Error parsing data " + e.toString());
    }

    // return JSON String
    return jObj;

}
}

3 个答案:

答案 0 :(得分：0)

您的回答是： - 

<string xmlns="http://tempuri.org/">
{"real estate":{"Madurai":[{"id":"5","category":"real estate","type":"Silver","name":"Heera","banner":"www.glossymob.com/soli/MapMadurai/5_banner_laptop-computer.jpg","logo":"www.glossymob.com/soli/MapMadurai/5_logo_laptop-computer.jpg","about":"test","contact":"test","map":{"lat_long_1":{"latitude":"10.00","longitude":"9.50"}}} ],"total":1} }
</string>

现在首先需要替换为

responseString = responseString.replace("<string xmlns=\"http://tempuri.org/\">","");
responseString = responseString.replace("</string>","");

请在替换上面的行之后将字符串转换为JSONObject。

答案 1 :(得分：0)

这不是纯粹的JSON。它里面有XML标签。要么只使用XML，要么使用JSON。

如果您只删除顶部和底部的XML标记，并继续进行JSON解析，那将很容易。

答案 2 :(得分：0)

您正在<string>内获取JSON响应，即XML，因此首先您必须从该标记中检索JSON数据。

  

{“真的   地产 “：{” 马杜赖 “：[{” ID “：” 5" ， “类别”：“真正的   地产 “ ”类型“： ”银“， ”名“： ”Heera“， ”旗帜“：” www.glossymob.com/soli/MapMadurai/5_banner_laptop-computer.jpg","logo":"www.glossymob。 COM /索利/ MapMadurai / 5_logo_laptop-computer.jpg”， “大约”： “测试”， “接触”： “测试”， “地图”：{ “lat_long_1”：{ “纬度”： “10.00”， “经度” “9.50”}}}   ]，“总计”：1}}

解决方案：

从网络上收到数据后，请致电parse()。

例如：

XMLParser parser = new XMLParser();
JSONArray jsonRes = parser.parse(response.getEntity().getContent());
// response is the HTTPResponse object

这是XMLParser类：

public class XMLParser extends DefaultHandler {

    private static String ROOT_ELEMENT = "string";
    private StringBuffer data = new StringBuffer();

    private JSONArray jsonData;

    public XMLParser() {
    }

    public JSONArray parse(InputStream in) {
        try {
            SAXParser parser = SAXParserFactory.newInstance().newSAXParser();
            parser.parse(in, this);
        } catch (ParserConfigurationException e) {
            e.printStackTrace();
        } catch (SAXException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if(in != null) {
                try {
                    in.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return jsonData;
    }

    @Override
    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
        data.replace(0, data.length(), "");

        if (localName.equalsIgnoreCase(ROOT_ELEMENT)) {
            jsonData = new JSONArray();
        }
    }

    @Override
    public void characters(char[] ch, int start, int length) throws SAXException {
        data.append(ch, start, length);
    }

    @Override
    public void endElement(String uri, String localName, String qName) throws SAXException {

        if (localName.equalsIgnoreCase(ROOT_ELEMENT)){
            try {
                jsonData = new JSONArray(data.toString());
            } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }


    }
}
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