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解析XML未显示预期结果

分类: 技术问答 • 2022-07-20 17:37:03
问题描述：

我有一个名为data.xml的本地xml文件。我已经使用PullParser进行了解析。解析logcat的输出后为：解析XML未显示预期结果

12-06 10:51:33.761: I/End:(5026): START_TAG: quiz 
12-06 10:51:33.761: I/End:(5026): START_TAG: mchoice 
12-06 10:51:33.761: I/End:(5026): START_TAG: question 
12-06 10:51:33.761: I/End:(5026): TEXT: Not a team sport for sure 
12-06 10:51:33.761: I/End:(5026): END_TAG: question 
12-06 10:51:33.761: I/End:(5026): START_TAG: id 
12-06 10:51:33.761: I/End:(5026): TEXT: 1 
12-06 10:51:33.761: I/End:(5026): END_TAG: id 
12-06 10:51:33.761: I/End:(5026): START_TAG: option1 
12-06 10:51:33.761: I/End:(5026): TEXT: Cricket 
12-06 10:51:33.761: I/End:(5026): END_TAG: option1 
12-06 10:51:33.761: I/End:(5026): START_TAG: option2 
12-06 10:51:33.761: I/End:(5026): TEXT: Tennis 
12-06 10:51:33.761: I/End:(5026): END_TAG: option2 
12-06 10:51:33.761: I/End:(5026): START_TAG: option3 
12-06 10:51:33.761: I/End:(5026): TEXT: Rugby 
12-06 10:51:33.761: I/End:(5026): END_TAG: option3 
12-06 10:51:33.761: I/End:(5026): START_TAG: option4 
12-06 10:51:33.761: I/End:(5026): TEXT: Soccer 
12-06 10:51:33.761: I/End:(5026): END_TAG: option4 
12-06 10:51:33.761: I/End:(5026): START_TAG: answer 
12-06 10:51:33.761: I/End:(5026): TEXT: Tennis 
12-06 10:51:33.761: I/End:(5026): END_TAG: answer 
12-06 10:51:33.761: I/End:(5026): END_TAG: mchoice 
12-06 10:51:33.761: I/End:(5026): START_TAG: mchoice 
12-06 10:51:33.761: I/End:(5026): START_TAG: question 
12-06 10:51:33.761: I/End:(5026): TEXT: I am the biggest planet in the Solar System 
12-06 10:51:33.761: I/End:(5026): END_TAG: question 
12-06 10:51:33.761: I/End:(5026): START_TAG: id 
12-06 10:51:33.761: I/End:(5026): TEXT: 2 
12-06 10:51:33.761: I/End:(5026): END_TAG: id 
12-06 10:51:33.761: I/End:(5026): START_TAG: option1 
12-06 10:51:33.761: I/End:(5026): TEXT: Saturn 
12-06 10:51:33.761: I/End:(5026): END_TAG: option1 
12-06 10:51:33.761: I/End:(5026): START_TAG: option2 
12-06 10:51:33.761: I/End:(5026): TEXT: Jupiter 
12-06 10:51:33.761: I/End:(5026): END_TAG: option2 
12-06 10:51:33.761: I/End:(5026): START_TAG: option3 
12-06 10:51:33.761: I/End:(5026): TEXT: Neptune 
12-06 10:51:33.761: I/End:(5026): END_TAG: option3 
12-06 10:51:33.761: I/End:(5026): START_TAG: option4 
12-06 10:51:33.761: I/End:(5026): TEXT: Pluto 
12-06 10:51:33.761: I/End:(5026): END_TAG: option4 
12-06 10:51:33.761: I/End:(5026): START_TAG: answer 
12-06 10:51:33.761: I/End:(5026): TEXT: Jupiter 
12-06 10:51:33.761: I/End:(5026): END_TAG: answer 
12-06 10:51:33.761: I/End:(5026): END_TAG: mchoice 
12-06 10:51:33.761: I/End:(5026): START_TAG: mchoice 
12-06 10:51:33.761: I/End:(5026): START_TAG: question 
12-06 10:51:33.761: I/End:(5026): TEXT: I am the closest star to the earth 
12-06 10:51:33.761: I/End:(5026): END_TAG: question 
12-06 10:51:33.761: I/End:(5026): START_TAG: id 
12-06 10:51:33.761: I/End:(5026): TEXT: 3 
12-06 10:51:33.761: I/End:(5026): END_TAG: id 
12-06 10:51:33.761: I/End:(5026): START_TAG: option1 
12-06 10:51:33.761: I/End:(5026): TEXT: Milky way 
12-06 10:51:33.761: I/End:(5026): END_TAG: option1 
12-06 10:51:33.761: I/End:(5026): START_TAG: option2 
12-06 10:51:33.761: I/End:(5026): TEXT: Moon 
12-06 10:51:33.761: I/End:(5026): END_TAG: option2 
12-06 10:51:33.761: I/End:(5026): START_TAG: option3 
12-06 10:51:33.761: I/End:(5026): TEXT: Sun 
12-06 10:51:33.761: I/End:(5026): END_TAG: option3 
12-06 10:51:33.761: I/End:(5026): START_TAG: option4 
12-06 10:51:33.761: I/End:(5026): TEXT: North Star 
12-06 10:51:33.761: I/End:(5026): END_TAG: option4 
12-06 10:51:33.761: I/End:(5026): START_TAG: answer 
12-06 10:51:33.761: I/End:(5026): TEXT: Sun 
12-06 10:51:33.761: I/End:(5026): END_TAG: answer 
12-06 10:51:33.761: I/End:(5026): END_TAG: mchoice 
12-06 10:51:33.761: I/End:(5026): START_TAG: mchoice 
12-06 10:51:33.761: I/End:(5026): START_TAG: question 
12-06 10:51:33.761: I/End:(5026): TEXT: A number which is not prime 
12-06 10:51:33.761: I/End:(5026): END_TAG: question 
12-06 10:51:33.761: I/End:(5026): START_TAG: id 
12-06 10:51:33.761: I/End:(5026): TEXT: 4 
12-06 10:51:33.761: I/End:(5026): END_TAG: id 
12-06 10:51:33.761: I/End:(5026): START_TAG: option1 
12-06 10:51:33.761: I/End:(5026): TEXT: 31 
12-06 10:51:33.761: I/End:(5026): END_TAG: option1 
12-06 10:51:33.761: I/End:(5026): START_TAG: option2 
12-06 10:51:33.761: I/End:(5026): TEXT: 61 
12-06 10:51:33.761: I/End:(5026): END_TAG: option2 
12-06 10:51:33.761: I/End:(5026): START_TAG: option3 
12-06 10:51:33.761: I/End:(5026): TEXT: 71 
12-06 10:51:33.761: I/End:(5026): END_TAG: option3 
12-06 10:51:33.761: I/End:(5026): START_TAG: option4 
12-06 10:51:33.761: I/End:(5026): TEXT: 91 
12-06 10:51:33.761: I/End:(5026): END_TAG: option4 
12-06 10:51:33.761: I/End:(5026): START_TAG: answer 
12-06 10:51:33.761: I/End:(5026): TEXT: 91 
12-06 10:51:33.761: I/End:(5026): END_TAG: answer 
12-06 10:51:33.761: I/End:(5026): END_TAG: mchoice 
12-06 10:51:33.761: I/End:(5026): START_TAG: mchoice 
12-06 10:51:33.761: I/End:(5026): START_TAG: question 
12-06 10:51:33.761: I/End:(5026): TEXT: Which is correct? 
12-06 10:51:33.761: I/End:(5026): END_TAG: question 
12-06 10:51:33.761: I/End:(5026): START_TAG: id 
12-06 10:51:33.761: I/End:(5026): TEXT: 5 
12-06 10:51:33.761: I/End:(5026): END_TAG: id 
12-06 10:51:33.761: I/End:(5026): START_TAG: option1 
12-06 10:51:33.761: I/End:(5026): TEXT: Foreine 
12-06 10:51:33.761: I/End:(5026): END_TAG: option1 
12-06 10:51:33.761: I/End:(5026): START_TAG: option2 
12-06 10:51:33.761: I/End:(5026): TEXT: Fariegn 
12-06 10:51:33.761: I/End:(5026): END_TAG: option2 
12-06 10:51:33.761: I/End:(5026): START_TAG: option3 
12-06 10:51:33.761: I/End:(5026): TEXT: Foreig 
12-06 10:51:33.761: I/End:(5026): END_TAG: option3 
12-06 10:51:33.761: I/End:(5026): START_TAG: option4 
12-06 10:51:33.761: I/End:(5026): TEXT: Foreign 
12-06 10:51:33.761: I/End:(5026): END_TAG: option4 
12-06 10:51:33.761: I/End:(5026): START_TAG: answer 
12-06 10:51:33.761: I/End:(5026): TEXT: Foreign 
12-06 10:51:33.761: I/End:(5026): END_TAG: answer

我已经使用这个方法来解析XML文件：

//local XML 
     private String getEventsFromAnXML(Activity activity) 
        throws XmlPullParserException, IOException 
        { 
        StringBuffer stringBuffer = new StringBuffer(); 
        Resources res = activity.getResources(); 
        XmlResourceParser xpp = res.getXml(R.xml.data); 
        xpp.next(); 

        int eventType = xpp.getEventType(); 
        while (eventType != XmlPullParser.END_DOCUMENT) 
        { 
         if(eventType == XmlPullParser.START_DOCUMENT) 
         { 
         // stringBuffer.append("--- Start XML ---"); 
         Log.i("Start:", "--- Start XML ---"); 
         } 
         else if(eventType == XmlPullParser.START_TAG) 
         { 
         stringBuffer.append("\nSTART_TAG: "+xpp.getName()); 

         Log.i("Start:", stringBuffer.toString()); 
         } 
         else if(eventType == XmlPullParser.END_TAG) 
         { 
         stringBuffer.append("\nEND_TAG: "+xpp.getName()); 
         Log.i("End:", stringBuffer.toString()); 
         } 
         else if(eventType == XmlPullParser.TEXT) 
         { 
         stringBuffer.append("\nTEXT: "+xpp.getText()); 
         Log.i("Text:", stringBuffer.toString()); 
         } 
         eventType = xpp.next(); 
        } 
        stringBuffer.append("\n--- End XML ---"); 
        return stringBuffer.toString(); 
        }

但是，我想输出是这样：

<?xml version="1.0" encoding="utf-8"?> 
12-06 10:51:34.891: I/XML:(5026): <quiz> 
12-06 10:51:34.891: I/XML:(5026): <mchoice> 
12-06 10:51:34.891: I/XML:(5026):  <question>Not a team sport for sure</question> 
12-06 10:51:34.891: I/XML:(5026): <id>1</id> 
12-06 10:51:34.891: I/XML:(5026):  <option1>Cricket</option1> 
12-06 10:51:34.891: I/XML:(5026):  <option2>Tennis</option2> 
12-06 10:51:34.891: I/XML:(5026):  <option3>Rugby</option3> 
12-06 10:51:34.891: I/XML:(5026):  <option4>Soccer</option4> 
12-06 10:51:34.891: I/XML:(5026): <answer>Tennis</answer> 
12-06 10:51:34.891: I/XML:(5026): </mchoice> 
12-06 10:51:34.891: I/XML:(5026): <mchoice> 
12-06 10:51:34.891: I/XML:(5026):  <question>I am the biggest planet in the Solar System</question> 
12-06 10:51:34.891: I/XML:(5026): <id>2</id> 
12-06 10:51:34.891: I/XML:(5026):  <option1>Saturn</option1> 
12-06 10:51:34.891: I/XML:(5026):  <option2>Jupiter</option2> 
12-06 10:51:34.891: I/XML:(5026):  <option3>Neptune</option3> 
12-06 10:51:34.891: I/XML:(5026):  <option4>Pluto</option4> 
12-06 10:51:34.891: I/XML:(5026):  <answer>Jupiter</answer> 
12-06 10:51:34.891: I/XML:(5026): </mchoice> 
12-06 10:51:34.891: I/XML:(5026): <mchoice> 
12-06 10:51:34.891: I/XML:(5026):  <question>I am the closest star to the earth</question> 
12-06 10:51:34.891: I/XML:(5026): <id>3</id> 
12-06 10:51:34.891: I/XML:(5026):  <option1>Milky way</option1> 
12-06 10:51:34.891: I/XML:(5026):  <option2>Moon</option2> 
12-06 10:51:34.891: I/XML:(5026):  <option3>Sun</option3> 
12-06 10:51:34.891: I/XML:(5026):  <option4>North Star</option4> 
12-06 10:51:34.891: I/XML:(5026):  <answer>Sun</answer> 
12-06 10:51:34.891: I/XML:(5026): </mchoice> 
12-06 10:51:34.891: I/XML:(5026): <mchoice> 
12-06 10:51:34.891: I/XML:(5026):  <question>A number which is not prime</question> 
12-06 10:51:34.891: I/XML:(5026): <id>4</id> 
12-06 10:51:34.891: I/XML:(5026):  <option1>31</option1> 
12-06 10:51:34.891: I/XML:(5026):  <option2>61</option2> 
12-06 10:51:34.891: I/XML:(5026):  <option3>71</option3> 
12-06 10:51:34.891: I/XML:(5026):  <option4>91</option4> 
12-06 10:51:34.891: I/XML:(5026):  <answer>91</answer> 
12-06 10:51:34.891: I/XML:(5026): </mchoice> 
12-06 10:51:34.891: I/XML:(5026): <mchoice> 
12-06 10:51:34.891: I/XML:(5026):  <question>Which is correct?</question> 
12-06 10:51:34.891: I/XML:(5026): <id>5</id> 
12-06 10:51:34.891: I/XML:(5026):  <option1>Foreine</option1> 
12-06 10:51:34.891: I/XML:(5026):  <option2>Fariegn</option2> 
12-06 10:51:34.891: I/XML:(5026):  <option3>Foreig</option3> 
12-06 10:51:34.891: I/XML:(5026):  <option4>Foreign</option4> 
12-06 10:51:34.891: I/XML:(5026):  <answer>Foreign</answer> 
12-06 10:51:34.891: I/XML:(5026):  </mchoice> 
12-06 10:51:34.891: I/XML:(5026): </quiz>

我哪里错了？如果我可以将xml数据存储在String变量中，那将是最好的。

答

试试这个：

  int eventType = parser.getEventType(); 

      done = false; 

      while (eventType != XmlPullParser.END_DOCUMENT && !done) { 
       String name = null; 
       switch (eventType) { 
       case XmlPullParser.START_DOCUMENT: 

        break; 

       case XmlPullParser.START_TAG: 
        name = parser.getName(); 


        if (name.equalsIgnoreCase("mchoice")) { 

         // Initialize your list 

        } else if (list!= null) { 

         if (name.equals(question)) { 

          System.out.println("question : " + parser 
            .nextText()); 

         } 

         else if (name.equalsIgnoreCase("id")) { 

          System.out.println("id : " + parser 
            .nextText()); 

         } 

         else if (name.equalsIgnoreCase("option1")) { 

          System.out.println("option 1 : " + parser 
            .nextText()); 

         } 

         else if (name.equalsIgnoreCase("option2")) { 

          System.out.println("option 2 : " + parser 
            .nextText()); 

         } 

         else if (name.equalsIgnoreCase("option3")) { 

          System.out.println("option 3 : " + parser 
            .nextText()); 

         } 

         else if (name.equalsIgnoreCase("option4")) { 

          System.out.println("option 4 :" + parser 
            .nextText()); 

         } 

         else if (name.equalsIgnoreCase("answer")) { 

          System.out.println("answer :" + parser 
            .nextText()); 

         }      
        } 

        // ------------- 

        break; 

       case XmlPullParser.END_TAG: 
        name = parser.getName(); 
        if (name.equalsIgnoreCase("mchoice") 
          && list != null) { 

         // add elements in list 

        } else if (name.equalsIgnoreCase("quiz")) { 


         done = true; 
        } 
        break; 
       } 
       eventType = parser.next(); 
      }

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