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AsyncHttp+gson解析

网上其实也有很多类似的这种框架不过还是觉得自己写的用着比较方便，（ps：自己的总是最好的 ^_^）

闲下来整理出来了自己之前用过的框架拿出来封装了一下。也写个记录，省的以后忘了。

本框架利用的是Async-Http.jar+gson.jar进行二次封装。

首先先建立一个抽象类，并定义一些常用的抽象方法：

 1 public abstract class HttpRequest {  2   3     /**  4      * @description: 获取参数  5      * @author:hc  6      * @return:RequestParams  7      * @return  8      */  9  10     public abstract RequestParams getParams(); 11  12     /** 13      * @description: 14      * @author:hc 15      * @return:String 16      * @return 17      */ 18  19     public abstract String getUrlString(); 20  21     /** 22      * @description: 23      * @author:hc 24      * @return:void 25      * @param arg3 26      */ 27  28     public abstract void onFailure(Throwable arg3); 29  30     /** 31      * @description: 32      * @author:hc 33      * @return:void 34      * @param arg2 35      */ 36  37     public abstract void onSuccess(String result); 38 }

然后定义网络访问成功和失败的接口：

1 public interface HttpSuccess<T> { 2  3     public void onSuccess(T result); 4  5 }

public interface HttpError {           public void onError(Throwable arg0) ;  }

接下来定义一个泛型类来接收服务器返回的数据：

public class HttpData<T> {      /**      * @param cls      * @param param      * @param httpSuccess      * @param httpError      * @return      */     public HttpClassRequest<T> newHttpRequest(Class<T> cls, HashMap<String, String> param, HttpSuccess<T> httpSuccess, HttpError httpError) {          // 如果这里请求需要添加公共参数在此添加         // param.put(key, value)          return new HttpClassRequest<T>(cls, param, httpSuccess, httpError);      } }

然后是请求数据处理类：

  1 public class HttpClassRequest<T> extends HttpRequest {   2    3     private HashMap<String, String> params;   4     private HttpError error;   5    6     private HttpSuccess<T> success;   7    8     private Class<T> cls;   9   10     /**  11      * create a instance HttpRequest.  12      *   13      * @param cls  14      * @param map  15      * @param httpSuccess  16      * @param httpError  17      */  18     public HttpClassRequest(Class<T> cls, HashMap<String, String> map, HttpSuccess<T> httpSuccess, HttpError httpError) {  19         this.cls = cls;  20         this.params = map;  21         this.success = httpSuccess;  22         this.error = httpError;  23   24     }  25   26     /**  27      * @description: 获取参数  28      * @author:hc  29      * @return:RequestParams  30      * @return  31      */  32   33     @Override  34     public RequestParams getParams() {  35         // TODO Auto-generated method stub  36         final RequestParams requestParams = new RequestParams();  37   38         StringBuilder stringBuilder = new StringBuilder();  39         Iterator<String> iterator = params.keySet().iterator();  40   41         while (iterator.hasNext()) {  42   43             String key = iterator.next().toString();  44   45             requestParams.put(key, params.get(key));  46   47             String val = params.get(key);  48             stringBuilder.append("&" + key + "=" + val);  49   50         }  51   52         CustomLog.d("提交参数为   %s", "=" + stringBuilder.toString());  53   54         return requestParams;  55     }  56   57     /**  58      * @description:  59      * @author:hc  60      * @return:String  61      * @return  62      */  63   64     @Override  65     public String getUrlString() {  66         return Constant.url;  67     }  68   69     /**  70      * @description:  71      * @author:hc  72      * @return:void  73      * @param arg3  74      */  75   76     @Override  77     public void onFailure(Throwable arg3) {  78         if (error != null)  79             error.onError(arg3);  80     }  81   82     /**  83      * @description:  84      * @author:hc  85      * @return:void  86      * @param arg2  87      */  88   89     @Override  90     public void onSuccess(String arg2) {  91   92         Gson gson = new Gson();  93   94         CustomLog.d("结果是=%s", arg2);  95   96         try {  97             if (success != null)  98                 success.onSuccess(gson.fromJson(arg2, cls));  99         } catch (JsonSyntaxException e) { 100  101             if (error != null) 102                 error.onError(e); 103         } 104  105     } 106 }

类中的方法是由抽象类中继承下来的方法：分别是 getParams() 对请求参数进行封装； getUrlString() 返回请求连接； onFailure(Throwable throwable) 请求失败处理； onSuccess(String result) 请求成功的处理，其中在返回成功的时候拿到返回数据，并把他封装成json对象数据回调出去。

接下来就是重点了：

  1 public class HttpRequestQueque {   2    3     private AsyncHttpClient client;// 实例话对象   4    5     private HttpRequest _httpRequst;   6    7     private RequestParams params;   8    9     /**  10      * create a instance HttpRequestQueque.  11      *   12      * @param context  13      */  14     public HttpRequestQueque(Context context) {  15         client = new AsyncHttpClient();  16         client.setTimeout(30000);  17     }  18   19     /**  20      * @description: 添加请求  21      * @author:hc  22      * @return:void  23      * @param httpRequst  24      */  25   26     public void add(HttpRequest httpRequst) {  27         this._httpRequst = httpRequst;  28         this.cance();  29         params = httpRequst.getParams();  30   31         CustomLog.d("JSONObject=%s", _httpRequst.getUrlString());  32   33         this._get(_httpRequst.getUrlString(), params, new TextHttpResponseHandler() {  34   35             @Override  36             public void onFailure(int arg0, Header[] arg1, String arg2, Throwable arg3) {  37   38                 CustomLog.d("http_stats_code=%s", " " + arg0);  39   40                 _httpRequst.onFailure(arg3);  41   42             }  43   44             @Override  45             public void onSuccess(int arg0, Header[] arg1, String arg2) {  46                 // TODO Auto-generated method stub  47                 _httpRequst.onSuccess(arg2);  48             }  49         });  50   51     }  52   53     /**  54      * @description: post 上传  55      * @author:hc  56      * @return:void  57      * @param httpRequst  58      */  59   60     public void addPost(HttpRequest httpRequst) {  61   62         this._httpRequst = httpRequst;  63   64         params = httpRequst.getParams();  65   66         CustomLog.d("SERVER_URL_POST==%s", _httpRequst.getUrlString());  67   68         this._post(_httpRequst.getUrlString(), params, new AsyncHttpResponseHandler() {  69   70             @Override  71             public void onSuccess(int statusCode, Header[] headers, byte[] responseBody) {  72                 _httpRequst.onSuccess(new String(responseBody));  73   74             }  75   76             @Override  77             public void onFailure(int statusCode, Header[] headers, byte[] responseBody, Throwable error) {  78   79                 CustomLog.d("statusCode ==== %d", statusCode);  80                 _httpRequst.onFailure(error);  81   82             }  83         });  84   85     }  86   87     /**  88      * @description: 取消加载  89      * @author:hc  90      * @return:void  91      */  92   93     public void cance() {  94         client.cancelAllRequests(true);  95     }  96   97     /**  98      * @description: 執行http请求  99      * @author:hc 100      * @return:void 101      * @param urlString 102      * @param params 103      * @param res 104      */ 105  106     private void _get(String urlString, RequestParams params, AsyncHttpResponseHandler res) // url里面带参数 107     { 108         client.get(urlString, params, res); 109     } 110  111     /** 112      * @description: 执行post请求 113      * @author:hc 114      * @return:void 115      * @param urlString 116      * @param params 117      * @param res 118      */ 119  120     private void _post(String urlString, RequestParams params, AsyncHttpResponseHandler res) // url里面带参数 121     { 122  123         client.post(urlString, params, res); 124     } 125 }

之前的代码都是为了使用方便进行二次封装，最终使用的是在这里使用async-http.jar进行网络访问，然后回调我们写的方法，让我们更加快捷的拿到结果。

好了接下来要看怎么去使用了

首先我们需要根据后台给出的接口定义我们的javabean;

javabean需要对应着后台返回的json对象来建立：如返回的json是

｛

System_id ：xxxxx

items:[

obj:xxxx

]

｝

这样我们就需要建立两个javabean，javabean的成员变量的名字必须要与json节点的名字相同，否则gson无法解析。

 1 public class JsonObj {  2   3     String System_id;  4     ArrayList<Itemobj> items;  5   6     public String getSystem_id() {  7         return System_id;  8     }  9  10     public void setSystem_id(String system_id) { 11         System_id = system_id; 12     } 13  14     public ArrayList<itemObj> getItems() { 15         return items; 16     } 17  18     public void setItems(ArrayList<itemObj> items) { 19         this.items = items; 20     } 21 }

1 public class Itemobj{ 2  String obj 3  4 private get…… 5 private set…… 6     7 }

然后则开始使用我们的框架进行网络访问了，代码如下：

先建立一个网络访问的方法：

 1 public class JsonTextData {  2   3     /**  4      *   5      * getFindList: 请求同时获取返回obj  6      * TODO(这里描述这个方法适用条件 – 可选)  7      * TODO(这里描述这个方法的执行流程 – 可选)  8      * TODO(这里描述这个方法的使用方法 – 可选)  9      * TODO(这里描述这个方法的注意事项 – 可选) 10      * 11      * @param  @param type 12      * @param  @param typeId 13      * @param  @param page 14      * @param  @param friendId 15      * @param  @param httpSuccess 16      * @param  @param httpError 17      * @param  @return    设定文件 18      * @return HttpClassRequest<JsonObj>    DOM对象 19      * @throws  20      * @since  CodingExample Ver 1.1 21      */ 22     public static HttpClassRequest<JsonObj> getTestObj(String page, 23             HttpSuccess<JsonObj> httpSuccess, HttpError httpError) { 24         HashMap<String, String> hashMap = new HashMap<String, String>(); 25  26         hashMap.put("r", "DiscoveryContent/list"); 27         hashMap.put("pageSize", "10"); 28         hashMap.put("page", page); 29  30  31         HttpData<JsonObj> huiHenDuoData = new HttpData<JsonObj>(); 32         return huiHenDuoData.newHttpRequest(JsonObj.class, hashMap, httpSuccess, httpError); 33  34     } 35 ｝

然后在我们在请求网络数据的地方使用：

public class MainActivity extends Activity {  private HttpRequestQueque requestQueque;   @Override  protected void onCreate(Bundle savedInstanceState) {   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_main);   requestQueque = new HttpRequestQueque(MainActivity.this);   requestQueque.add(JsonTextData.getTestObj("1", new HttpSuccess<JsonObj>() {    @Override    public void onSuccess(JsonObj jsonObj) {     String obj = jsonObj.getSystem_id();    }   }, new HttpError() {    @Override    public void onError(Throwable arg0) {     // TODO Auto-generated method stub     Toast.makeText(MainActivity.this, "失败了！！！！！", 1).show();    }   }));   ｝ ｝