Android 之xml解析

 1 package com.sax.handler;
 2 
 3 import java.util.ArrayList;
 4 import java.util.HashMap;
 5 import java.util.List;
 6 
 7 import org.xml.sax.Attributes;
 8 import org.xml.sax.SAXException;
 9 import org.xml.sax.helpers.DefaultHandler;
10 
11  
12 
13 public class myHandler extends DefaultHandler{
14 
15     private HashMap<String, String> map=null;//存储单个解析的完整对象
16     private List<HashMap<String,String>> list=null;//存储所有的解析对象
17     private String currentTag=null;//正在解析的元素的标签
18     private String currentVal=null;//解析当前元素的值
19     private String nodeName=null;//解析当前节点名称
20     
21     public List<HashMap<String, String>> getList() {
22         return list;
23     }
24 
25     public myHandler(String nodeName) {
26         // TODO Auto-generated constructor stub
27         this.nodeName=nodeName;
28     }
29     
30     //解析到开始文档
31     //当读到第一个开始标签的时候会触发这个方法
32     @Override
33     public void startDocument() throws SAXException {
34         // TODO Auto-generated method stub
35          System.out.println("--startDocument()--");
36         list=new ArrayList<HashMap<String,String>>();
37     }
38 
39     //开始元素
40     //当遇到文档开头的时候会调用这个方法
41     @Override
42     public void startElement(String uri, String localName, String qname,Attributes attributes) throws SAXException {
43         // TODO Auto-generated method stub
44          //判断正在解析的元素是不是开始解析的元素
45         System.out.println("--startElement()--"+qname);
46         if(qname.equals(nodeName)){
47             map=new HashMap<String, String>();
48         }
49         if(attributes!=null&&map!=null){
50             for (int i = 0; i < attributes.getLength(); i++) {
51                 map.put(attributes.getQName(i), attributes.getValue(i));
52             }
53         }
54         System.out.println(qname+":"+map);
55         currentTag=qname;
56     }
57     
58     //元素内容
59     //用来处理xml文件所读取到的内容
60     @Override
61     public void characters(char[] ch, int start, int length) throws SAXException {
62         // TODO Auto-generated method stub
63         if(currentTag!=null&&map!=null){
64             currentVal=new String(ch,start,length);
65             if(currentVal!=null&&!currentVal.trim().equals("")&&!currentVal.trim().equals("\n")){
66                 map.put(currentTag, currentVal);
67             }
68         }
69          System.out.println("--characters()--"+currentTag+" "+currentVal);
70         currentTag=null;//把当前节点对应标签和值设空
71         currentVal=null;
72     }
73 
74     
75     //结束解析
76     //遇到结束标记的时候会调用这个方法
77     @Override
78     public void endElement(String uri, String localName, String qName)
79             throws SAXException {
80         // TODO Auto-generated method stub
81          System.out.println("--endElement()--"+qName);
82         if(qName.equals(nodeName)){
83             list.add(map);
84             map=null;
85         }
86     }
87     
88      //结束解析文档
89 
90     //结束解析文档，即解析根元素结束标签时调用该方法
91          @Override
92         public void endDocument() throws SAXException {
93             // TODO Auto-generated method stub
94              System.out.println("--endDocument()--");
95             super.endDocument();
96          }
97 }

 1 package com.sax.http;
 2 
 3 import java.io.InputStream;
 4 import java.net.HttpURLConnection;
 5 import java.net.URL;
 6 
 7 public class httpUtils {
 8     public  httpUtils (){
 9         
10     }
11     public static InputStream getXml(String path){
12         InputStream inputStream=null;
13         try {
14             URL url=new URL(path);
15             if(url!=null){
16                 HttpURLConnection connection=(HttpURLConnection)url.openConnection();
17                 connection.setConnectTimeout(3000);
18                 connection.setDoInput(true);
19                 connection.setRequestMethod("GET");
20                 int code=connection.getResponseCode();
21                 if(code==200){
22                     inputStream=connection.getInputStream();
23                 }
24                 
25             }
26         } catch (Exception e) {
27             // TODO: handle exception
28         }
29         return inputStream;
30     }
31 }

 1 package com.sax.service;
 2 
 3 import java.io.InputStream;
 4 import java.util.HashMap;
 5 import java.util.List;
 6 
 7 import javax.xml.parsers.SAXParser;
 8 import javax.xml.parsers.SAXParserFactory;
 9 
10 import com.sax.handler.myHandler;
11 
12 public class saxService {
13 
14     public saxService() {
15         // TODO Auto-generated constructor stub
16     }
17  public static List<HashMap<String,String>> readXml(InputStream inputStream,String nodeName){
18      try {
19         SAXParserFactory spf=SAXParserFactory.newInstance();//创建解析工厂对象
20         SAXParser parser=spf.newSAXParser();//用来解析xml
21         myHandler handler=new myHandler(nodeName);
22         parser.parse(inputStream,handler);
23         inputStream.close();
24          return handler.getList();
25     } catch (Exception e) {
26         // TODO: handle exception
27     }
28      return null;
29  }
30 
31 }

 1 package com.sax.test;
 2 
 3 import java.io.InputStream;
 4 import java.util.ArrayList;
 5 import java.util.HashMap;
 6 import java.util.List;
 7 import java.util.Map;
 8 
 9 import com.sax.http.httpUtils;
10 import com.sax.service.saxService;
11 
12 public class test {
13 
14     /**
15      * @param args
16      */
17     public static void main(String[] args) {
18         // TODO Auto-generated method stub
19   String path="http://122.206.79.193:8080/myhttp/person.xml";
20   InputStream inputStream=httpUtils.getXml(path);
21   try {
22     List<HashMap<String,String>> list=saxService.readXml(inputStream, "person");
23     for(HashMap<String,String> map:list){
24         System.out.println(map.toString());
25     }
26 } catch (Exception e) {
27     // TODO: handle exception
28 }
29     }
30 
31 }