Android解析XML（PULL）与Android解析Json

安卓解析json4种格式：

http://blog.youkuaiyun.com/mfc2003/article/details/38584845/

动态生成XML：

http://blog.youkuaiyun.com/qq776306395/article/details/28859901

Android解析XML（PULL）

private ProgressDialog pd;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        pd = new ProgressDialog(this);
        pd.setMessage("正在拼命加载中....");


    }
    //从网页上获取数据
    public void getXMLByNet(View view){
         new MyTask().execute();
    }

    class MyTask extends AsyncTask{

        @Override//获取数据
        protected Object doInBackground(Object[] params) {
            //获取网络XML数据
            String path="http://169.254.113.40:8080/students.xml";
            try {
                //定义一个网络协议（java.net）传入一个路径
                URL url=new URL(path);
                //打开连接
                HttpURLConnection connection= (HttpURLConnection) url.openConnection();
                //设置请求方式
                connection.setRequestMethod("GET");
                //设置请求超时的时间
                connection.setConnectTimeout(5000);
                //获取结果码
                int code=connection.getResponseCode();
                if(code==200){
                    //获取数据
                    InputStream is=connection.getInputStream();
//                    int len=0;
//                    byte[] buf=new byte[1024];
                    //StringBuffer stringBuffer=new StringBuffer();
//                    while((len=is.read(buf))!=-1){
//                        String s=new String(buf,0,len);
//                        stringBuffer.append(s);
//                    }
                    //Log.i("test",stringBuffer.toString());

                    //解析XML （PULL）
                    XmlPullParser pullParser=Xml.newPullParser();
                    pullParser.setInput(is,"UTF-8");
                    //解析的标签类型
                    int type=pullParser.getEventType();
                    while(type!=XmlPullParser.END_DOCUMENT){
                        switch (type) {
                            case  XmlPullParser.START_TAG:
                                //获取开始标签的名字
                                String startTagName=pullParser.getName();
                                if("student".equals(startTagName)){
                                    //获取属性id的值
                                    String sid=pullParser.getAttributeValue(0);
                                    Log.i("test",sid);
                                }else if("sname".equals(startTagName)){
                                    String sname=pullParser.nextText();
                                    Log.i("test"," "+sname);
                                }else if("sage".equals(startTagName)){
                                    String sage=pullParser.nextText();
                                    Log.i("test"," "+sage);
                                }
                                break;
                            case XmlPullParser.END_TAG:
                                break;
                        }
                        //细节：
                        type=pullParser.next();
                    }
                    is.close();
                }
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            } catch (XmlPullParserException e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override//更新界面
        protected void onPostExecute(Object o) {
            super.onPostExecute(o);
        }
    }

Android解析Json（导入一个架包fastjson-1.2.3.jar）

public class MainActivity extends AppCompatActivity {

    private ProgressDialog pd;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        pd = new ProgressDialog(this);
        pd.setMessage("正在拼命加载中....");


    }
    public void getJsonByNet(View view){
         new MyJsonTask().execute();
    }
    class MyJsonTask extends AsyncTask {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pd.show();
        }

        @Override
        protected Object doInBackground(Object[] params) {
            //获取网络Json数据
            String path = "http://169.254.113.40:8080/students.json";
            try {
                //定义一个网络协议（java.net）传入一个路径
                URL url = new URL(path);
                //打开连接
                HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                //设置请求方式
                connection.setRequestMethod("GET");
                //设置请求超时的时间
                connection.setConnectTimeout(5000);
                //获取结果码
                if (connection.getResponseCode() == 200) {
                    InputStream is = connection.getInputStream();
                    int len = 0;
                    byte[] buf = new byte[1024];
                    StringBuffer stringBuffer = new StringBuffer();
                    while ((len = is.read(buf)) != -1) {
                        String s = new String(buf, 0, len);
                        stringBuffer.append(s);
                    }
                    Log.i("test", stringBuffer.toString());
                    //FastJson
                    //解析JSON
                    BigObject bigObject = JSON.parseObject(stringBuffer.toString(), BigObject.class);
                    int count = bigObject.getCount();
                    Log.i("test", count + " ");
                    List<Student> students = bigObject.getStudents();
                    for (Student student : students) {
                        Log.i("test", student.getSname() + " " + student.getSsex());
                    }
                }
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPostExecute(Object o) {
            pd.cancel();
            super.onPostExecute(o);
        }
    }
}

<!--json权限-->
    <uses-permission android:name="android.permission.INTERNET"></uses-permission>