Android之解析XML实例

1、以下是使用SSH框架生成xml

一、第一步写一个实体类（Person）

package com.zking.entity;public class Person {    private int pid;    private String pname;    private int page;    public Person() {        super();    }    public Person(String pname, int page) {        super();        this.pname = pname;        this.page = page;    }    public int getPid() {        return pid;    }    public void setPid(int pid) {        this.pid = pid;    }    public String getPname() {        return pname;    }    public void setPname(String pname) {        this.pname = pname;    }    public int getPage() {        return page;    }    public void setPage(int page) {        this.page = page;    }    @Override    public String toString() {        return "Person [pid=" + pid + ", pname=" + pname + ", page=" + page + "]";    }}

二、第二 配置Struts配置文件

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"    "http://struts.apache.org/dtds/struts-2.3.dtd">    <struts>        <package name="myPackage" extends="struts-default">        <action name="personAction*" class="personAction" method="{1}">                <result name="success">/login.jsp</result>            </action>        </package>    </struts> 

 

三、展示数据库数据（xml）

<?xml version="1.0" encoding="UTF-8" ?><%@ page language="java" contentType="text/xml; charset=UTF-8" pageEncoding="UTF-8"%><%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%><persons><c:forEach items="${persons}" var="p">        <person name="${p.pid}">         <pname>${p.pname}</pname>            <page>${p.page}</page>        </person>    </c:forEach></persons>

2、以下是使用pull解析xml文件将会把数据展示到手机页面

用listview展示数据

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main"    android:layout_width="match_parent" android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:orientation="vertical"    tools:context="com.zking.android_parsexml.MainActivity">    <Button        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="提交"        android:onClick="content"        />    <ListView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/listview"        >    </ListView></LinearLayout>

MainActivity

package com.example.android_parsexml;import android.app.ProgressDialog;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 android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.LinearLayout;import android.widget.ListView;import android.widget.TextView;import org.xmlpull.v1.XmlPullParser;import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity {    List<Person> PersonList=new ArrayList<>();    private ListView listview;    private ProgressDialog progressDialog;    private Myadater myadater;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //实例化进度条对话框        progressDialog = new ProgressDialog(this);        progressDialog.setMessage("拼命加载中......");        listview = (ListView) findViewById(R.id.listview);    //实例化适配器        myadater = new Myadater();        listview.setAdapter(myadater);    }    class Myadater extends BaseAdapter{        @Override        public int getCount() {            return PersonList.size();        }        @Override        public Object getItem(int i) {            return PersonList.get(i);        }        @Override        public long getItemId(int i) {            return i;        }        @Override        public View getView(int i, View view, ViewGroup viewGroup) {            LinearLayout layout=new LinearLayout(MainActivity.this);            layout.setOrientation(LinearLayout.HORIZONTAL);            TextView textViewpid=new TextView(MainActivity.this);            textViewpid.setText(PersonList.get(i).getPid()+"");            TextView textViewName=new TextView(MainActivity.this);            textViewName.setText(PersonList.get(i).getPname());            TextView textViewsex=new TextView(MainActivity.this);            textViewsex.setText(PersonList.get(i).getPage()+"");            layout.addView(textViewpid);            layout.addView(textViewName);            layout.addView(textViewsex);            return layout;        }    }    public void content(View view){      new MyTask().execute();    }    class MyTask extends AsyncTask{        private Person person;        @Override        protected void onPreExecute() {            super.onPreExecute();            progressDialog.show();        }        @Override        protected Object doInBackground(Object[] objects) {            //获取网络数据XML            //01.确定网络路径http://localhost:8080/mySSH/personActionadd.action            String path="http://192.168.23.1:8080/mySSH/personActionaddperson.action";            try {                //02.实例化URL                URL url=new URL(path);                //03获取连接对象             HttpURLConnection connection= (HttpURLConnection) url.openConnection();                //04.设置请求方式                connection.setRequestMethod("GET");                //05.设置请求连接超时的时间(优化)                connection.setConnectTimeout(5000);                //06.获取响应码，结果码                int code=connection.getResponseCode();              if (code==200){               //07.获取服务器返回过来的数据                  InputStream is=connection.getInputStream();                  //解析PULL                  XmlPullParser xpp= Xml.newPullParser();                  xpp.setInput(is,"UTF-8");                  int type=xpp.getEventType();                  while(type!=XmlPullParser.END_DOCUMENT){                      switch (type) {                          case XmlPullParser.START_TAG:                              //获取开始标签的名字                              String startTagName=xpp.getName();                              Log.i("test",""+"startTagName"+startTagName);                              if("person".equals(startTagName)){                                  person = new Person();                                  //获取name属性值                                  int pid=Integer.parseInt(xpp.getAttributeValue(0));                                  Log.i("test",""+pid);                                  person.setPid(pid);                              }else if("pname".equals(startTagName)){                                  //获取sex的文本值                                  String pname=xpp.nextText();                                  Log.i("test",""+pname);                                  person.setPname(pname);                              }else if("page".equals(startTagName)){                                  //获取sex的文本值                                  int page=Integer.parseInt(xpp.nextText());                                  Log.i("test",""+page);                                  person.setPage(page);                              }                       break;                          case XmlPullParser.END_TAG:                              //获取到结束标签的名字                              String endTagName=xpp.getName();                              Log.i("test",""+endTagName);                              if("person".equals(endTagName)){                                  PersonList.add(person);                              }                              break;                      }                      type=xpp.next();                      }              }            } catch (Exception e) {                e.printStackTrace();            }            return null;        }        @Override        protected void onPostExecute(Object o) {            super.onPostExecute(o);            //通知适配器发生改变         myadater.notifyDataSetChanged();            progressDialog.cancel();        }    }}

//添加网络权限

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