android解析网络json数据（1）

来源：互联网发布：异构系统数据交互编辑：程序博客网时间：2024/06/05 14:11

1.首先获得url，传入URL类，利用URL的openconnection方法，获得URLConnection，去的输入流，进行操作，具体代码如下：

public class NetConnection{    public NetConnection(final String url,final HttpMethod method,final SuccessCallback successCallback,             final FailCallback failCallback,final String ... key){        new AsyncTask<Void, Void, String>() {            protected String doInBackground(Void... params) {                StringBuffer parameter = new StringBuffer();                for (int i = 0; i < key.length; i+=2) {                    parameter.append(key[i]).append("=").append(key[i+1]).append("&");                }                try {                    URLConnection uc = null;                    switch(method){                    case POST:                        uc = new URL(url).openConnection();                        uc.setDoInput(true);                        uc.setDoOutput(true);                        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(uc.getOutputStream(),                                Config.CHARSET));                        bw.write(parameter.toString());                        bw.flush();                        break;                    default:                        uc = new URL(url+"?"+parameter.toString()).openConnection();                        break;                    }                    System.out.println("request url:"+uc.getURL());                    System.out.println("request data:"+parameter);                    BufferedReader bf = new BufferedReader(new InputStreamReader(uc.getInputStream(), Config.CHARSET));                    String line = null;                    StringBuffer sb = new StringBuffer();                    while ((line = bf.readLine()) != null) {                        sb.append(line);                    }                    System.out.println("result:"+sb);                    return sb.toString();                } catch (MalformedURLException e) {                    e.printStackTrace();                } catch (IOException e) {                    e.printStackTrace();                }                return null;            }            @Override            protected void onPostExecute(String result) {                if (result != null) {                    if (successCallback != null) {                        successCallback.onSuccess(result);                    }                }else {                    if (failCallback != null) {                        failCallback.onFail();                    }                }                super.onPostExecute(result);            }        }.execute();    }    public static interface SuccessCallback{        void onSuccess(String result);    }    public static interface FailCallback{        void onFail();    }}

里面封装了两个接口，SuccessCallback和FailCallback，分别用于实现这个类的时候重写，来执行取得数据和灭幼取得数据的情况。参数中用字符串包含了请求参数。

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