Android_获取网络端的Xml和json

我的xml文件：

<?xml version="1.0" encoding="UTF-8"?>
<students>
    <student sid="1">
        <sname>张三</sname>
        <sage>19</sage>
    </student>
    <student sid="2">
        <sname>李四</sname>
        <sage>19</sage>
    </student>
</students>

我的json文件：

{"count":3,"students":[{"sid":1,"sname":"静","sage":19},{"sid":1,"sname":"静","sage":19},{"sid":1,"sname":"静","sage":19}]}

注意：

最后一定要以UTF-8的格式另存。

布局代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
    android:layout_height="match_parent" tools:context="com.example.android_parsexml.MainActivity">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="获取Xml"
        android:onClick="getxml"/>
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="获取json"
        android:onClick="getjson"/>

</LinearLayout>

Activity代码：

package com.example.android_parsexml;

import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.util.Xml;
import android.view.View;

import com.alibaba.fastjson.JSON;

import org.xmlpull.v1.XmlPullParser;

import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void getxml(View view){
        new MyTask().execute();
    }
    class MyTask extends AsyncTask{

        @Override
        protected Object doInBackground(Object[] objects) {
            //获取网络XML数据
            String path="http://193.168.2.232:8080/student.xml";
            try {
                URL url=new URL(path);
                HttpURLConnection urlConnection= (HttpURLConnection) url.openConnection();
                //设置请求方式
                urlConnection.setRequestMethod("GET");
                //设置请求超时的时间，进行优化
                urlConnection.setConnectTimeout(5000);
                //获取结果码
                int code=urlConnection.getResponseCode();
                Log.i("text","近俩了"+code);
                if (code==200){
                    Log.i("text","近俩了");
                    //获取数据
                    InputStream is=urlConnection.getInputStream();
                    //解析Xml
                    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 startName=pullParser.getName();
                                if ("student".equals(startName)){
                                    //获取属性
                                    String sid=pullParser.getAttributeValue(0);
                                    Log.i("text",sid);
                                }else if("sname".equals(startName)){
                                    String sname=pullParser.nextText();
                                    Log.i("text"," "+sname);
                                }else if ("sage".equals(startName)){
                                    String sage=pullParser.nextText();
                                    Log.i("text","  "+sage);
                                }
                                break;
                            case XmlPullParser.END_TAG:
                                break;
                        }
                        type=pullParser.next();

                    }
                    is.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
      }

        @Override
        protected void onPostExecute(Object o) {
            super.onPostExecute(o);
        }
    }
    public void getjson(View view){
        new MyJsonTack().execute();
    }

    class MyJsonTack extends AsyncTask{

        @Override
        protected Object doInBackground(Object[] objects) {
            String path="http://193.168.2.232:8080/students.json";
            try {
                URL url=new URL(path);
                HttpURLConnection urlConnection= (HttpURLConnection) url.openConnection();
                urlConnection.setRequestMethod("GET");
                urlConnection.setConnectTimeout(5000);
                if (urlConnection.getResponseCode()==200){
                    InputStream is=urlConnection.getInputStream();
                    int len=0;
                    byte[] by=new byte[1024];
                    StringBuffer sb=new StringBuffer();
                    while ((len=is.read(by))!=-1){
                        sb.append(new String(by,0,len));
                    }
                    Log.i("text",sb.toString());
                    //解析JSON
                    BigObject bigObject= JSON.parseObject(sb.toString(),BigObject.class);
                    int count=bigObject.getCount();
                    Log.i("text",count+"");
                    List<Student> st=bigObject.getStudents();
                    for (Student student : st) {
                        Log.i("text",student.getSname());
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }

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

}


BigObject 类：
package com.example.android_parsexml;

import java.util.List;

/**
 * Created by Administrator on 2017/7/26 0026.
 */

public class BigObject {
    private int count;
    private List<Student> students;

    public int getCount() {
        return count;
    }

    public BigObject() {
        super();
    }

    public BigObject(int count, List<Student> students) {
        this.count = count;
        this.students = students;
    }

    public void setCount(int count) {
        this.count = count;
    }

    public List<Student> getStudents() {
        return students;
    }

    public void setStudents(List<Student> students) {
        this.students = students;
    }
}

Student类：

package com.example.android_parsexml;

/**
 * Created by Administrator on 2017/7/26 0026.
 */

public class Student {
    private int sid;
    private String sname;
    private int sage;

    public Student() {
        super();
    }

    public Student(int sid, String sname, int sage) {
        this.sid = sid;
        this.sname = sname;
        this.sage = sage;
    }

    public int getSid() {
        return sid;
    }

    public void setSid(int sid) {
        this.sid = sid;
    }

    public String getSname() {
        return sname;
    }

    public void setSname(String sname) {
        this.sname = sname;
    }

    public int getSage() {
        return sage;
    }

    public void setSage(int sage) {
        this.sage = sage;
    }
}

权限：

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

提醒：

获取json文件时要导入jia包：fastjson-1.2.3.jar