PullParserXMLDemo

最新推荐文章于 2018-11-11 21:30:21 发布

Divine_Wrath

最新推荐文章于 2018-11-11 21:30:21 发布

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CC 4.0 BY-SA版权

本文链接：https://blog.youkuaiyun.com/Divine_Wrath/article/details/49512225

本文介绍了一种使用Java解析XML文件的方法，包括初始化上下文、获取输入流、解析XML内容并将其转换为Map列表的过程。

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package com.example.xml;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

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

import android.content.Context;
import android.content.res.AssetManager;

public class PullParserXMLDemo {

	private Context context;
	private InputStream inputStream;

	public PullParserXMLDemo(Context context) {
		super();
		this.context = context;
	}

	public InputStream getXML(String fileName) throws IOException{
		AssetManager assetManager=context.getAssets();
		inputStream=assetManager.open(fileName);
		return inputStream;
	}

	public List<Map<String, String>> readXML(InputStream inputStream,String encoding) throws XmlPullParserException, IOException{
		List<Map<String, String>> listmap=null;
		Map<String, String> map=null;
		XmlPullParserFactory xmlPullParserFactory=XmlPullParserFactory.newInstance();
		XmlPullParser xmlPullParser=xmlPullParserFactory.newPullParser();
		xmlPullParser.setInput(inputStream, encoding);
		int eventType=xmlPullParser.getEventType();
		while (eventType!=XmlPullParser.END_DOCUMENT) {
			switch (eventType) {
			case XmlPullParser.START_DOCUMENT:
				listmap=new ArrayList<Map<String,String>>();
				break;
			case XmlPullParser.START_TAG:
				if ("book".equals(xmlPullParser.getName())) {
					map=new HashMap<String, String>();
					int count=xmlPullParser.getAttributeCount();
					if (count>1) {
						String _id=xmlPullParser.getAttributeValue(0);
						String _author=xmlPullParser.getAttributeValue(1);
						map.put("_id", _id);
						map.put("_author", _author);
					}else {
						String _id=xmlPullParser.getAttributeValue(0);
						map.put("_id", _id);
					}
				}
				if ("name".equals(xmlPullParser.getName())&&map!=null) {
					String _name=xmlPullParser.nextText();
					map.put("_name", _name);
				}
				if ("price".equals(xmlPullParser.getName())&&map!=null) {
					String _price=xmlPullParser.nextText();
					map.put("_price", _price);
				}
				break;
			case XmlPullParser.END_TAG:
				if ("book".equals(xmlPullParser.getName())) {
					listmap.add(map);
					map=null;
				}
				break;
			default:
				break;
			}
			eventType=xmlPullParser.next();
		}
		return listmap;
	}

}