30-31.Android-解析XML（PULL）-解析Json

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原创最新推荐文章于 2026-09-28 06:09:20 发布 636 阅读 AI 写同款· GEO 优化 ›

xmlpull_1_0_5解决 org/xmlpull/v1/XmlPullParserException XStream报错 org/xmlpull/v1/XmlPullParserException org.xmlpull.v1.XmlPullParserException 立即下载

一.知识概括

二.具体代码实现

代码图

activity_main.xml

<?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    >

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="获取网络XML数据"
        android:onClick="getXMLByNet"
        /><!--getXMLByNet:获取XML数据通过网络-->

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="获取网络Json数据"
        android:onClick="getJsonByNet"
        />

</LinearLayout>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.zking.android30_parsexml">

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

    <application android:allowBackup="true" android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true" android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

1.解析XML（PULL）

在Tomcat\webapps\RooT里面手动建xml

students.xml

<?xml version="1.0" encoding="UTF-8"?>
<students>
         <student sid="1">
                  <sname>名字1</sname>
                  <sage>年龄12</sage>
         </student>
         <student sid="2">
                  <sname>名字2</sname>
                  <sage>23</sage>
         </student>
         <student sid="3">
                  <sname>名字1</sname>
                  <sage>18</sage>
         </student>
</students>

有可能乱码，所以要改编码方式

在浏览器查看网络环境是否已搭好

MainActivity.java

package com.zking.android30_parsexml;

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

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class MainActivity extends AppCompatActivity {

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

        public void getXMLByNet(View view){//拿网络数据耗时，所以不能在主线程里面写
            new MyTask().execute();
        }
        class MyTask extends AsyncTask{//异步任务类
                //在此方法里面拿数据
                @Override
                protected Object doInBackground(Object[] params) {
                        //1.获取网络XML数据
                        String path="http://192.168.43.163:8080/students.xml";
                        try {
                              URL url=new URL(path);
                              HttpURLConnection connection= (HttpURLConnection) url.openConnection();//打开连接
                              //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());


                                    //2.解析XML
                                    XmlPullParser pullParser=Xml.newPullParser();
                                    pullParser.setInput(is,"UTF-8");
                                    //拿到解析的标签类型
                                    int type=pullParser.getEventType();
                                    while(type!=XmlPullParser.END_DOCUMENT){//如果不是解析文档，就一直解析
                                          switch (type) {
                                              case  XmlPullParser.START_TAG://如果是开始标签
                                                    //获取开始标签的名字
                                                    String startTagName=pullParser.getName();
                                                    if("student".equals(startTagName)){//如果是student拿sid
                                                          //获取属性id的值
                                                          String sid=pullParser.getAttributeValue(0);//下标
                                                          Log.i("test",sid);
                                                    }else if("sname".equals(startTagName)){//如果是sname拿值
                                                          String sname=pullParser.nextText();//下一个文本
                                                          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();//循环一次给下一个
                                    }
                                    is.close();//关闭流
                              }
                        } catch (MalformedURLException e) {
                              e.printStackTrace();
                        } catch (IOException e) {
                              e.printStackTrace();
                        } catch (XmlPullParserException e) {
                            e.printStackTrace();
                        }
                    return null;
                }

                //在此方法里面更新界面
                @Override
                protected void onPostExecute(Object o) {
                       super.onPostExecute(o);
                }
        }

}


效果图




2.解析Json
在Tomcat\webapps\RooT里面手动建xml
students.json

{"count":3,"students":[{"sid":1,"sname":"名字1","ssex":"女"},{"sid":2,"sname":"名字2","ssex":"人妖"},
{"sid":3,"sname":"名字3","ssex":"男"}]}

导jar包：fastjson-1.2.3.jar

MainActivity.java

package com.zking.android30_parsexml;

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

import com.alibaba.fastjson.JSON;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import java.io.IOException;
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 {

        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 getXMLByNet(View view){//拿网络数据耗时，所以不能在主线程里面写
            new MyTask().execute();
        }
        class MyTask extends AsyncTask{//异步任务类
                //在此方法里面拿数据
                @Override
                protected Object doInBackground(Object[] params) {
                        //1.获取网络XML数据
                        String path="http://192.168.43.163:8080/students.xml";
                        try {
                              URL url=new URL(path);
                              HttpURLConnection connection= (HttpURLConnection) url.openConnection();//打开连接
                              //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());


                                    //2.解析XML
                                    XmlPullParser pullParser=Xml.newPullParser();
                                    pullParser.setInput(is,"UTF-8");
                                    //拿到解析的标签类型
                                    int type=pullParser.getEventType();
                                    while(type!=XmlPullParser.END_DOCUMENT){//如果不是解析文档，就一直解析
                                          switch (type) {
                                              case  XmlPullParser.START_TAG://如果是开始标签
                                                    //获取开始标签的名字
                                                    String startTagName=pullParser.getName();
                                                    if("student".equals(startTagName)){//如果是student拿sid
                                                          //获取属性id的值
                                                          String sid=pullParser.getAttributeValue(0);//下标
                                                          Log.i("test",sid);
                                                    }else if("sname".equals(startTagName)){//如果是sname拿值
                                                          String sname=pullParser.nextText();//下一个文本
                                                          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();//循环一次给下一个
                                    }
                                    is.close();//关闭流
                              }
                        } catch (MalformedURLException e) {
                              e.printStackTrace();
                        } catch (IOException e) {
                              e.printStackTrace();
                        } catch (XmlPullParserException e) {
                            e.printStackTrace();
                        }
                    return null;
                }

                //在此方法里面更新界面
                @Override
                protected void onPostExecute(Object o) {
                       super.onPostExecute(o);
                }
        }


        //拿网络json
        public void getJsonByNet(View view){
            new MyJsonTask().execute();
        }
        class MyJsonTask extends AsyncTask{
                @Override
                protected void onPreExecute() {//在执行之前
                    super.onPreExecute();
                    pd.show();
                }

                @Override
                protected Object doInBackground(Object[] params) {
                        //1.获取网络Json数据
                        String path="http://192.168.43.163:8080/students.json";
                        try {
                             URL url=new URL(path);
                             HttpURLConnection connection= (HttpURLConnection) url.openConnection();
                             connection.setRequestMethod("GET");
                             connection.setConnectTimeout(5000);

                             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());

                                    //2.解析JSON（两种方式:json/Gson   FastJson）
                                    BigObject bigObject=JSON.parseObject(stringBuffer.toString(),BigObject.class);//解析对象
                                    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);
                }
        }
}

BigObject.java

package com.zking.android30_parsexml;

import java.util.List;

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

public class BigObject {
    private int count;//必须与Tomcat里面的保持一致
    private List<Student> students;

    public BigObject() {
    }

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

    public int getCount() {
        return count;
    }

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

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

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

Student.java

package com.zking.android30_parsexml;

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

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

    public Student() {
    }

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

    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 String getSsex() {
        return ssex;
    }

    public void setSsex(String ssex) {
        this.ssex = ssex;
    }
}

效果图