1 public class GsonRequest<T> extends Request<T> { 2     private final Gson mGson = new Gson(); 3     private final Class<T> mClazz; 4     private final Listener<T> mListener; 5     private final Map<String, String> mHeaders; 6  7     public GsonRequest(String url, Class<T> clazz, Listener<T> listener, ErrorListener errorListener) { 8         this(Method.GET, url, clazz, null, listener, errorListener); 9     }10 11     public GsonRequest(int method, String url, Class<T> clazz, Map<String, String> headers,12             Listener<T> listener, ErrorListener errorListener) {13         super(method, url, errorListener);14         this.mClazz = clazz;15         this.mHeaders = headers;16         this.mListener = listener;17     }18 19     @Override20     public Map<String, String> getHeaders() throws AuthFailureError {21         return mHeaders != null ? mHeaders : super.getHeaders();22     }23 24     @Override25     protected void deliverResponse(T response) {26         mListener.onResponse(response);27     }28 29     @Override30     protected Response<T> parseNetworkResponse(NetworkResponse response) {31         try {32             String json = new String(response.data, HttpHeaderParser.parseCharset(response.headers));33             return Response.success(mGson.fromJson(json, mClazz),34                     HttpHeaderParser.parseCacheHeaders(response));35         } catch (UnsupportedEncodingException e) {36             return Response.error(new ParseError(e));37         } catch (JsonSyntaxException e) {38             return Response.error(new ParseError(e));39         }40     }41 }

 1 public class FastJsonRequest<T> extends Request<T> {  2     private final Class<T> mClazz; 3     private final Listener<T> mListener; 4     private final Map<String, String> mHeaders; 5  6     public FastJsonRequest(String url, Class<T> clazz, Listener<T> listener, ErrorListener errorListener) { 7         this(Method.GET, url, clazz, null, listener, errorListener); 8     } 9 10     public FastJsonRequest(int method, String url, Class<T> clazz, Map<String, String> headers,11             Listener<T> listener, ErrorListener errorListener) {12         super(method, url, errorListener);13         this.mClazz = clazz;14         this.mHeaders = headers;15         this.mListener = listener;16     }17 18     @Override19     public Map<String, String> getHeaders() throws AuthFailureError {20         return mHeaders != null ? mHeaders : super.getHeaders();21     }22 23     @Override24     protected void deliverResponse(T response) {25         mListener.onResponse(response);26     }27 28     @Override29     protected Response<T> parseNetworkResponse(NetworkResponse response) {30         try {31             String json = new String(response.data, HttpHeaderParser.parseCharset(response.headers));32             return Response.success(JSON.parseObject(json, mClazz),33                     HttpHeaderParser.parseCacheHeaders(response));34         } catch (UnsupportedEncodingException e) {35             return Response.error(new ParseError(e));36         }  37     }38 }

 1 public class MainActivity extends Activity { 2     private Context context; 3     private String url="http://www.weather.com.cn/data/sk/101010100.html"; 4     private TextView text; 5      6     @Override 7     protected void onCreate(Bundle savedInstanceState) { 8         super.onCreate(savedInstanceState); 9         setContentView(R.layout.activity_main);10         context=this;11          text=(TextView)this.findViewById(R.id.txttitle);12         RequestQueue mQueue = Volley.newRequestQueue(context);13         FastJsonRequest<Weather> fastJson=new FastJsonRequest<Weather>(url, Weather.class,14                 new Response.Listener<Weather>() {15 16                     @Override17                     public void onResponse(Weather weather) {18                         // TODO Auto-generated method stub19                           WeatherInfo weatherInfo = weather.getWeatherinfo();20                           text.setText(weatherInfo.getCity());21                     }22                 }, new Response.ErrorListener() {23 24                     @Override25                     public void one rrorResponse(VolleyError arg0) {26                         // TODO Auto-generated method stub27                         28                     }29                 });30         mQueue.add(fastJson);31         32         GsonRequest<Weather> gsonRequest=new GsonRequest<Weather>(url, Weather.class,33                 new Response.Listener<Weather>() {34 35                     @Override36                     public void onResponse(Weather weather) {37                         // TODO Auto-generated method stub38                          WeatherInfo weatherInfo = weather.getWeatherinfo();39                           text.setText(text.getText()+weatherInfo.getTime());40                     }41                 }, new Response.ErrorListener() {42 43                     @Override44                     public void one rrorResponse(VolleyError arg0) {45                         // TODO Auto-generated method stub46                         47                     }48                 });49         mQueue.add(gsonRequest);50         51         52     } 53 }

 1 public class Weather { 2     private WeatherInfo weatherinfo;   3        4     public WeatherInfo getWeatherinfo() {   5         return weatherinfo;   6     }   7    8     public void setWeatherinfo(WeatherInfo weatherinfo) {   9         this.weatherinfo = weatherinfo;  10     }  11 }

 1 public class WeatherInfo { 2     private String city;   3        4     private String temp;   5    6     private String time;   7    8     public String getCity() {   9         return city;  10     }  11   12     public void setCity(String city) {  13         this.city = city;  14     }  15   16     public String getTemp() {  17         return temp;  18     }  19   20     public void setTemp(String temp) {  21         this.temp = temp;  22     }  23   24     public String getTime() {  25         return time;  26     }  27   28     public void setTime(String time) {  29         this.time = time;  30     }  31 }