Servlet处理Json请求数据包

来源：互联网发布：秦义绝捏脸中文数据编辑：程序博客网时间：2024/05/16 09:34

http://navylee.iteye.com/blog/1558805

Java代码  
request.setCharacterEncoding("UTF-8");  
    response.setContentType("text/html;charset=UTF-8");  
    String acceptjson = "";  
    try {  
        BufferedReader br = new BufferedReader(new InputStreamReader(  
                (ServletInputStream) request.getInputStream(), "utf-8"));  
        StringBuffer sb = new StringBuffer("");  
        String temp;  
        while ((temp = br.readLine()) != null) {  
            sb.append(temp);  
        }  
        br.close();  
        acceptjson = sb.toString();  
        if (acceptjson != "") {  
            JSONObject jo = JSONObject.fromObject(acceptjson);  
            JSONArray imgArray = jo.getJSONArray("PartsImages");  
            JSONArray infArray = jo.getJSONArray("BasicInfo");  
            for (int i = 0; i < imgArray.size(); i++) {  
                JSONObject imgObject = JSONObject.fromObject(imgArray  
                        .get(i));  
                System.out.println(imgObject.get("PartsImg"));  
            }  
            JSONObject infObject = JSONObject.fromObject(infArray.get(0));  
            System.out.println(infObject.get("Parts_cate"));  
            System.out.println(infObject.get("Company"));  
            System.out.println(infObject.get("Parts_name"));  
            System.out.println(infObject.get("TEL"));  
            System.out.println(infObject.get("Parts_price"));  
            System.out.println(infObject.get("Suitable"));  
            System.out.println(infObject.get("UsedStyle"));  
            System.out.println(infObject.get("Supplement"));  
            System.out.println(jo.toString());  
        }  
        response.getWriter().write(MyReadFile.read("/post/publishsuccess"));  
    } catch (Exception e) {  
        e.printStackTrace();  
        response.getWriter().write(MyReadFile.read("/post/publishfailure"));  
    }  

Java代码  
import java.io.BufferedReader;  
import java.io.IOException;  
import java.io.InputStreamReader;  
import java.util.List;  
  
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.entity.StringEntity;  
import org.apache.http.impl.client.DefaultHttpClient;  
import org.json.JSONArray;  
import org.json.JSONException;  
import org.json.JSONObject;  
import org.json.JSONStringer;  
  
import android.content.Context;  
import android.telephony.NeighboringCellInfo;  
import android.telephony.TelephonyManager;  
  
public class Location {  
    public static String LOCATIONS_URL = "http://www.google.com/loc/json";  
  
    public static String getLocations(Context context) {  
        // generate json request  
        String jr = generateJsonRequest(context);  
  
        try {  
            DefaultHttpClient client = new DefaultHttpClient();  
  
            StringEntity entity = new StringEntity(jr);  
  
            HttpPost httpost = new HttpPost(LOCATIONS_URL);  
            httpost.setEntity(entity);  
  
            HttpResponse response = client.execute(httpost);  
  
            String locationsJSONString = getStringFromHttp(response.getEntity());  
              
            return extractLocationsFromJsonString(locationsJSONString);  
        } catch (ClientProtocolException e) {  
  
            //e.printStackTrace();  
        } catch (IOException e) {  
              
            //e.printStackTrace();  
        } catch (Exception e) {  
            //e.printStackTrace();  
        }  
        return null;  
  
    }  
  
    private static String extractLocationsFromJsonString(String jsonString) {  
        String country = "";  
        String region = "";  
        String city = "";  
        String street = "";  
        String street_number = "";  
        double latitude = 0.0;  
        double longitude = 0.0;  
          
        //"accuracy":901.0  
        double accuracy = 0.0;  
          
        try {  
            JSONObject jo = new JSONObject(jsonString);  
            JSONObject location = (JSONObject) jo.get("location");  
            latitude = (Double) location.get("latitude");  
            longitude = (Double) location.get("longitude");  
            accuracy = (Double) location.get("accuracy");  
            JSONObject address = (JSONObject) location.get("address");  
  
            country = (String) address.get("country");  
            region = (String) address.get("region");  
            city = (String) address.get("city");  
            street = (String) address.get("street");  
            street_number = (String) address.get("street_number");  
        } catch (JSONException e) {  
  
            //e.printStackTrace();  
        }  
  
        return "(" + latitude + "," + longitude + ")\t" + country + region + city  
                + street + street_number + "\t" + "精确度：" + accuracy;  
    }  
  
    // 获取所有的网页信息以String 返回  
    private static String getStringFromHttp(HttpEntity entity) {  
  
        StringBuffer buffer = new StringBuffer();  
  
        try {  
            // 获取输入流  
            BufferedReader reader = new BufferedReader(new InputStreamReader(  
                    entity.getContent()));  
  
            // 将返回的数据读到buffer中  
            String temp = null;  
  
            while ((temp = reader.readLine()) != null) {  
                buffer.append(temp);  
            }  
        } catch (IllegalStateException e) {  
              
            //e.printStackTrace();  
        } catch (IOException e) {  
            //e.printStackTrace();  
        }  
        return buffer.toString();  
    }  
  
    private static String generateJsonRequest(Context context) {  
        TelephonyManager manager = (TelephonyManager) context  
                .getSystemService(Context.TELEPHONY_SERVICE);  
        List<NeighboringCellInfo> cellList = manager.getNeighboringCellInfo();  
  
        if (cellList.size() == 0)  
            return null;  
  
        JSONStringer js = new JSONStringer();  
        try {  
  
            js.object();  
  
            js.key("version").value("1.1.0");  
            js.key("host").value("maps.google.com");  
            js.key("home_mobile_country_code").value(460);  
            js.key("home_mobile_network_code").value(0);  
            js.key("radio_type").value("gsm");  
            js.key("request_address").value(true);  
            js.key("address_language").value("zh_CN");  
  
            JSONArray ct = new JSONArray();  
  
            for (NeighboringCellInfo info : cellList) {  
  
                JSONObject c = new JSONObject();  
                c.put("cell_id", info.getCid());  
                c.put("location_area_code", info.getLac());  
                c.put("mobile_country_code", 460);  
                c.put("mobile_network_code", 0);  
                c.put("signal_strength", info.getRssi()); // 获取邻居小区信号强度  
  
                ct.put(c);  
            }  
            js.key("cell_towers").value(ct);  
            js.endObject();  
        } catch (JSONException e) {  
            //e.printStackTrace();  
            return null;  
        }  
  
        return js.toString().replace("true", "True");  
    }  
}  

发送的数据为
{"version":"1.1.0","host":"maps.google.com","home_mobile_country_code":460,"home_mobile_network_code":0,"radio_type":"gsm","request_address":True,"address_language":"zh_CN","cell_towers":[{"mobile_network_code":0,"location_area_code":24803,"cell_id":4364,"signal_strength":24,"mobile_country_code":460},{"mobile_network_code":0,"location_area_code":24803,"cell_id":4361,"signal_strength":27,"mobile_country_code":460},{"mobile_network_code":0,"location_area_code":24611,"cell_id":4381,"signal_strength":28,"mobile_country_code":460},{"mobile_network_code":0,"location_area_code":22831,"cell_id":2702,"signal_strength":29,"mobile_country_code":460},{"mobile_network_code":0,"location_area_code":24802,"cell_id":14962,"signal_strength":99,"mobile_country_code":460},{"mobile_network_code":0,"location_area_code":24802,"cell_id":4703,"signal_strength":22,"mobile_country_code":460}]}

接受到的json数据为

{
"location":
{
"latitude":24.476252,
"longitude":118.16445,
"address":
{
"country":"中国",
"country_code":"CN",
"region":"福建省",
"city":"厦门市",
"street":"前埔西路",
"street_number":"154号"
},
"accuracy":901.0
},
"access_token":"2:NuPu1NEsj5wuRxym:Yvvx7zIaD3oFqYiL"
}

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