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?
?
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?
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?
?
--------- 部分實例
?
try {
??? ??? ??? ??? ??? HttpResponse response = client.execute(myget);
??? ??? ??? ??? ???
BufferedReader reader = new BufferedReader(
??? ??? ??? ??? ??? ??? ??? new InputStreamReader(response.getEntity()
??? ??? ??? ??? ??? ??? ??? ??? ??? .getContent()));
??? ??? ??? ??? ??
? for (String s = reader.readLine(); s != null; s = reader
??? ??? ??? ??? ??? ??? ??? .readLine()) {
??? ??? ??? ??? ??? ??
? builder.append(s);
??? ??? ??? ??? ??? }
??? ??? ??? ??? ???
JSONObject jsonObject = new JSONObject(builder.toString());
??? ??? ??? ??? ??? error = jsonObject.getInt("errno");
??? ??? ??? ??? ??? String errormsg = jsonObject.getString("errmsg");
??? ??? ??? ??? ??? Log.v("wgp",myget.getURI().toString());
??? ??? ??? ??? ??? Log.v("wgp", "error=" + error);
??? ??? ??? ??? ??? Log.v("wgp", "errormsg=" + errormsg);
??? ??? ??? ??? ??? if (error == 0) {
??? ??? ??? ??? ??? ???
array = jsonObject.getJSONArray("data");
??? ??? ??? ??? ??? ??? mFavoriteList = new ArrayList<FavoriteItem>();
??? ??? ??? ??? ??? ??? FavoriteItem item = null;
??? ??? ??? ??? ??? ??? String srcType;
??? ??? ??? ??? ??? ???
for (int i = 0; i < array.length(); i++) {
??? ??? ??? ??? ??? ??? ??? item = new FavoriteItem();
??? ??? ??? ??? ??? ??? ??? item.setId(array.getJSONObject(i).getInt("id"));
??? ??? ??? ??? ??? ??? ??? item.setUserId(array.getJSONObject(i).getInt("userid"));
??? ??? ??? ??? ??? ??? ??? item.setUsername(array.getJSONObject(i).getString("username"));
??? ??? ??? ??? ??? ??? ??? item.setType(array.getJSONObject(i).getInt("type"));
??? ??? ??? ??? ??? ??? ??? item.setCid(array.getJSONObject(i).getInt("cid"));
??? ??? ??? ??? ??? ??? ??? item.setTitle(array.getJSONObject(i).getString("title"));
??? ??? ??? ??? ??? ??? ??? item.setUrl(array.getJSONObject(i).getString("url"));
??? ??? ??? ??? ??? ??? ??? item.setTag(array.getJSONObject(i).getString("tag"));
??? ??? ??? ??? ??? ??? ??? item.setSrc(array.getJSONObject(i).getString("src"));
??? ??? ??? ??? ??? ??? ??? item.setCreateDate(array.getJSONObject(i).getString("created"));
??? ??? ??? ??? ??? ??? ??? item.setModifiedDate(array.getJSONObject(i).getString("modified"));
??? ??? ??? ??? ??? ??? ??? srcType = array.getJSONObject(i).getString("src_type");
??? ??? ??? ??? ??? ??? ??? if(srcType != null && srcType.equals("cps")){
??? ??? ??? ??? ??? ??? ??? ??? item.setSrc_type("industry");
??? ??? ??? ??? ??? ??? ??? }else{
??? ??? ??? ??? ??? ??? ??? ??? item.setSrc_type(srcType);
??? ??? ??? ??? ??? ??? ??? }
??? ??? ??? ??? ??? ??? ??? mFavoriteList.add(item);
??? ??? ??? ??? ??? ??? }
??? ??? ??? ??? ??? ??? if (mFavoriteList.size() == 0) {
??? ??? ??? ??? ??? ??? ??? handler.sendEmptyMessage(-1);
??? ??? ??? ??? ??? ??? } else {
??? ??? ??? ??? ???
??? ??? handler.sendEmptyMessage(1);//更新主UI
??? ??? ??? ??? ??? ??? }
??? ??? ??? ??? ??? }
??? ??? ??? ??? } catch (Exception e) {
??? ??? ??? ??? ??? e.printStackTrace();
??? ??? ??? ??? ??? handler.sendEmptyMessage(-1);
??? ??? ??? ??? } finally {
??? ??? ??? ??? }
?
?
?
?
=============
?
?
?
?
?
Android?SDK集成了Apache?HttpClient模塊。要注意的是，這里的Apache?HttpClient模塊是 HttpClient?4.0（org.apache.http.*），而不是常見的 Jakarta?Commons?HttpClient?3.x（org.apache.commons.httpclient.*）。
?????????? HttpClient常用HttpGet和HttpPost這兩個類，分別對應Get方式和Post方式。
?
?
?????????? 無論是使用 HttpGet ，還是使用 HttpPost ，都必須通過如下 3 步來訪問 HTTP 資源。
?
?????????? 1. 創建 HttpGet 或 HttpPost 對象，將要請求的 URL 通過構造方法傳入 HttpGet 或 HttpPost 對象。
???????? ? 2. 使用 DefaultHttpClient 類的 execute 方法發送 HTTP?GET 或 HTTP?POST 請求，并返回 HttpResponse 對象。
?????????? 3. 通過 HttpResponse 接口的 getEntity 方法返回響應信息，并進行相應的處理。
?????????? 如果使用 HttpPost 方法提交 HTTP?POST 請求，則需要使用 HttpPost 類的 setEntity 方法設置請求參數。參數則必須用NameValuePair[]數組存儲。
??????????
???????? ?? HttpGet
- ? public ?String?doGet()??
- ????{??
- ????????String?uriAPI?=? "http://XXXXX?str=I+am+get+String" ;??
- ????????String?result=? "" ;??
- //??????HttpGet?httpRequst?=?new?HttpGet(URI?uri); ??
- //??????HttpGet?httpRequst?=?new?HttpGet(String?uri); ??
- //??????創建HttpGet或HttpPost對象，將要請求的URL通過構造方法傳入HttpGet或HttpPost對象。 ??
- ????????HttpGet?httpRequst?=? new ?HttpGet(uriAPI);??
- ??
- //??????new?DefaultHttpClient().execute(HttpUriRequst?requst); ??
- ???????? try ?{??
- ??? //使用DefaultHttpClient類的execute方法發送HTTP?GET請求，并返回HttpResponse對象。 ??
- ????????????HttpResponse?httpResponse?=? new ?DefaultHttpClient().execute(httpRequst); //其中HttpGet是HttpUriRequst的子類 ??
- ???????????? if (httpResponse.getStatusLine().getStatusCode()?==? 200 )??
- ????????????{??
- ????????????????HttpEntity?httpEntity?=?httpResponse.getEntity();??
- ????????????????result?=?EntityUtils.toString(httpEntity); //取出應答字符串 ??
- ???????????? //?一般來說都要刪除多余的字符? ??
- ????????????????result.replaceAll( "\r" ,? "" ); //去掉返回結果中的"\r"字符，否則會在結果字符串后面顯示一個小方格?? ??
- ????????????}??
- ??????????????????? else ???
- ????????????????????????httpRequst.abort();??
- ???????????}? catch ?(ClientProtocolException?e)?{??
- ???????????? //?TODO?Auto-generated?catch?block ??
- ????????????e.printStackTrace();??
- ????????????result?=?e.getMessage().toString();??
- ????????}? catch ?(IOException?e)?{??
- ???????????? //?TODO?Auto-generated?catch?block ??
- ????????????e.printStackTrace();??
- ????????????result?=?e.getMessage().toString();??
- ????????}??
- ???????? return ?result;??
- ????}??
?
????????????? ? HttpPost
????????????? 如果使用 HttpPost 方法提交 HTTP?POST 請求，則需要使用 HttpPost 類的 setEntity 方法設置請求參數。參數則必須用NameValuePair[]數組存儲。
- public ?String?doPost()??
- ????{??
- ????????String?uriAPI?=? "http://XXXXXX" ;//Post方式沒有參數在這里??
- ????????String?result?=? "" ;??
- ????????HttpPost?httpRequst?=? new ?HttpPost(uriAPI); //創建HttpPost對象 ??
- ??????????
- ????????List?<NameValuePair>?params?=? new ?ArrayList<NameValuePair>();??
- ????????params.add( new ?BasicNameValuePair( "str" ,? "I?am?Post?String" ));??
- ??????????
- ???????? try ?{??
- ????????????httpRequst.setEntity( new ?UrlEncodedFormEntity(params,HTTP.UTF_8));??
- ????????????HttpResponse?httpResponse?=? new ?DefaultHttpClient().execute(httpRequst);??
- ???????????? if (httpResponse.getStatusLine().getStatusCode()?==? 200 )??
- ????????????{??
- ????????????????HttpEntity?httpEntity?=?httpResponse.getEntity();??
- ????????????????result?=?EntityUtils.toString(httpEntity); //取出應答字符串 ??
- ????????????}??
- ????????}? catch ?(UnsupportedEncodingException?e)?{??
- ???????????? //?TODO?Auto-generated?catch?block ??
- ????????????e.printStackTrace();??
- ????????????result?=?e.getMessage().toString();??
- ????????}??
- ???????? catch ?(ClientProtocolException?e)?{??
- ???????????? //?TODO?Auto-generated?catch?block ??
- ????????????e.printStackTrace();??
- ????????????result?=?e.getMessage().toString();??
- ????????}??
- ???????? catch ?(IOException?e)?{??
- ???????????? //?TODO?Auto-generated?catch?block ??
- ????????????e.printStackTrace();??
- ????????????result?=?e.getMessage().toString();??
- ????????}??
- ???????? return ?result;??
- ????}??
?
????????? 以發送連接請求時，需要設置鏈接超時和請求超時等參數，否則會長期停止或者崩潰。
- HttpParams?httpParameters?=? new ?BasicHttpParams();??
- HttpConnectionParams.setConnectionTimeout(httpParameters,? 10 * 1000 ); //設置請求超時10秒 ??
- HttpConnectionParams.setSoTimeout(httpParameters,? 10 * 1000 );? //設置等待數據超時10秒 ??
- HttpConnectionParams.setSocketBufferSize(params,? 8192 );??
- HttpClient?httpclient?=? new ?DefaultHttpClient(httpParameters);? //此時構造DefaultHttpClient時將參數傳入 ??
- ??
- ??
- ??
- 由于是聯網，在AndroidManifest.xml中添加網絡連接的權限??
-
<uses-permission?android:name=
"android.permission.INTERNET"
/>?
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