XML로 SAX 구문 분석

안녕하세요, 내 XML 파일을 읽으려면 어떻게해야하는지 알아내는 데 어려움이 있습니다.XML로 SAX 구문 분석

나는 Sax를 사용하지만 나는 "ansArray"의 자식 노드를 SAX가 읽을 수있게하는 것 같습니다. 내 XML이 잘못된 형식으로 작성되었는지 확실하지 않아서 도움이 될 것입니다.

NB "AnsArray"에 4 개의 문자열 항목이있는 XStream을 사용하여 XML 문서가 저장되었습니다.

XML의 DOC : 위의 XML 파일에서

<?xml version="1.0" encoding="utf-8" ?> 
    <questionList> 
    <Question> 
     <id>-1</id> 
     <question>&quot;Who Was Sleepless In Seattle With Meg Ryan?&quot;</question> 
     <ansArray> 
     <string>&quot;Bruce Willis&quot;</string> 
     <string>&quot;Arnie Schwarzenegger&quot;</string> 
     <string>&quot;Joe Pesci&quot;</string> 
     <string>&quot;Tom Hanks&quot;</string> 
     </ansArray> 
     <correctAns>4</correctAns> 
     <iDifficulty>2</iDifficulty> 
    </Question> 
    <Question> 
     <id>-1</id> 
     <question>&quot;who was the Terminator?&quot;</question> 
     <ansArray> 
     <string>&quot;John Travolta&quot;</string> 
     <string>&quot;Stevan Segal&quot;</string> 
     <string>&quot;Arnie Schwarzenegger&quot;</string> 
     <string>&quot;Al Pacino&quot;</string> 
     </ansArray> 
     <correctAns>3</correctAns> 
     <iDifficulty>3</iDifficulty> 
    </Question> 
</questionList>

내가 ansArray의 자식 noes를 제외한 모든 것을 읽을 수 있습니다 즉

<ansArray> 
    <string>&quot;John Travolta&quot;</string> 
    <string>&quot;Stevan Segal&quot;</string> 
    <string>&quot;Arnie Schwarzenegger&quot;</string> 
    <string>&quot;Al Pacino&quot;</string> 
    </ansArray>

SAX의 XML 코드 :

import java.util.ArrayList; 
import org.xml.sax.Attributes; 
import org.xml.sax.SAXException; 
import org.xml.sax.helpers.DefaultHandler; 

public class SAX_XMLReader extends DefaultHandler { 

    boolean currentElement = false; 
    String currentValue = ""; 

    static Question question; 
    static ArrayList<Question> questionList=new ArrayList<Question>(); 

    ArrayList<String> sAnswers=new ArrayList<String>(4); 

    public static ArrayList<Question> getquestionList() { 
     return questionList; 
    } 

    @Override 
    public void startElement(String uri, String localName, String qName, 
      Attributes atts) throws SAXException { 

     currentElement = true; 

     //System.out.println("qName = "+qName); 

     if (qName.equals("questionList")) { 
      questionList = new ArrayList<Question>(); 
     } else if (qName.equals("Question")) { 
      question = new Question(); 
     } //how to handle the answer string array 
     else if (qName.equalsIgnoreCase("ansArray")) { 
       //?? 
     } 
    } 

    @Override 
    public void endElement(String uri, String localName, String qName) 
      throws SAXException { 

     currentElement = false; 

     //System.out.println("qName = "+qName); 

     if(qName.equals("question")) 
     { 
      question.setQuestion(currentValue.trim()); 
      //System.out.println("Q: "+currentValue.trim()); 
     } 
     else if (qName.equalsIgnoreCase("correctAns")) { 
      question.setCorrectAns(Integer.parseInt(currentValue.trim()));    
     } 
     else if (qName.equalsIgnoreCase("iDifficulty")) { 
      question.setiDifficulty(Integer.parseInt(currentValue.trim()));   
     }  
     else if (qName.equalsIgnoreCase("ansArray")) { 
      //?? 
     }    

     else if (qName.equals("Question")) { 
      questionList.add(question); 
     } 

     currentValue = "";    

    } 

    @Override 
    public void characters(char[] ch, int start, int length) 
      throws SAXException { 

     if (currentElement) { 
      currentValue = currentValue + new String(ch, start, length); 
     } 

    } 

}

질문 클래스 :

import com.thoughtworks.xstream.annotations.XStreamAlias; 
import com.thoughtworks.xstream.XStream; 
import com.thoughtworks.xstream.annotations.XStreamImplicit; 
import java.io.Serializable; 
import java.util.ArrayList; 
import java.util.List; 
/* 
* To change this license header, choose License Headers in Project Properties. 
* To change this template file, choose Tools | Templates 
* and open the template in the editor. 
*/ 

//change string array to list 

public class Question implements Serializable{ 

    private int id=-1;   
    private String question="";   
    //private String[] ansArray = new String[4];   
     ArrayList<String> sAnswers=new ArrayList<String>(4);  
    private int correctAns=-1; 
    private int iDifficulty=-1; 


    public Question(){ 
      //sAnswers=new ArrayList<String>(); 
      for(int x=0;x<4;x++){ 
       sAnswers.add("default answer "+x); 
      } 
    } 

    //testing contructor 
     public Question(int id,String sQuestion){ 

       this.id=id; 
     this.question =sQuestion; 
    } 


    public Question(int id,String sQuestion,String sAns1){ 

       this.id=id; 
     this.question =sQuestion; 
       this.sAnswers.add(sAns1); 

     //this.ansArray[0]=sAns1; 
    } 

    public Question(String sQuestion,String sAns1,String sAns2,String sAns3,String sAns4,int iCorrectAns){ 

       this.question =sQuestion; 
     this.sAnswers.add(sAns1); 
       this.sAnswers.add(sAns2); 
       this.sAnswers.add(sAns3); 
       this.sAnswers.add(sAns4); 
     this.correctAns =iCorrectAns; 
    } 

    //constuctor with difficuly int(1-15) 
    public Question(String sQuestion,String sAns1,String sAns2,String sAns3,String sAns4,int iCorrectAns,int iDifficulty){ 

       this.question =sQuestion; 
     this.sAnswers.add(sAns1); 
       this.sAnswers.add(sAns2); 
       this.sAnswers.add(sAns3); 
       this.sAnswers.add(sAns4); 
     this.correctAns =iCorrectAns; 
     this.iDifficulty=iDifficulty; 
    } 

    //constuctor with difficuly int(1-15) 
    public Question(int id,String sQuestion,String sAns1,String sAns2,String sAns3,String sAns4,int iCorrectAns,int iDifficulty){ 

       this.id=id; 
     this.question =sQuestion; 
     this.sAnswers.add(sAns1); 
       this.sAnswers.add(sAns2); 
       this.sAnswers.add(sAns3); 
       this.sAnswers.add(sAns4); 
     this.correctAns =iCorrectAns; 
     this.iDifficulty=iDifficulty; 
    } 



    public int getiDifficulty() { 
     return iDifficulty; 
    } 

    public void setiDifficulty(int iDifficulty) { 
     this.iDifficulty = iDifficulty; 
    } 

    public int getID() { 
     return id; 
    } 


    public void setID(int id) { 
     this.id = id; 
    } 


    public String getQuestion() { 
     return question; 
    } 


    public void setQuestion(String question) { 
     this.question = question; 
    } 


    public String getAnswer(int i){ 
      return sAnswers.get(i); 

    } 


    public void setAnswer(int i,String answer){  
      sAnswers.add(answer); 
    } 


    //get the correct answer as a string 
    public String sGetCorrectAnswer(){ 
     return sAnswers.get(correctAns); 
    } 


    public String getAnswersList() 
    { 
     String s="\nA) " + sAnswers.get(0) + 
       "\nB) " + sAnswers.get(1) + 
       "\nC) " + sAnswers.get(2) + 
       "\nD) " + sAnswers.get(3); 
     return s; 
    } 


    public int getiCorrectAns() { 
     return correctAns; 
    } 
    public void setCorrectAns(int correctAns) { 
     this.correctAns = correctAns; 
    } 


     @Override 
    public String toString(){ 

     String log ="\n\nQuestion by ID" + 
       "\n\nId: "+this.getID()+ 
       "\nQuestion: " + this.getQuestion() + 
       " \nAns1: " + this.getAnswer(0) + 
       " \nAns2: " + this.getAnswer(1) + 
       " \nAns3: " + this.getAnswer(2) + 
       " \nAns4: " + this.getAnswer(3) + 
       " \nCorrectAns: " + this.getiCorrectAns()+ 
       " \nDifficulty: " + this.getiDifficulty() 
       ; 
     return log; 
    } 



}

출처

2014-01-26 fuzzy dunlop

음 .. 왜 XmlPullParser를 사용하지 않습니까? –

Sax-parser는 XML 파일을 읽는 아주 좋은 방법입니다. 그것은 많은 플랫폼에서 지원되며 당신은 그것으로 vety 큰 XML 파일을 구문 분석 할 수 있습니다. – AlexS

startElement()은 xml-start-tag가 발견 될 때마다 호출됩니다. 즉, 당신의 다음 요소 (qname를) 예를 들면 의미 :

questionList
질문
ID
질문
ansArray
문자열
문자열
문자열
문자열
correctAns
iDifficulty
질문
ID
질문
ansArray
문자열
문자열
문자열
문자열
correctAns
iDifficulty 당신은 XML 데이터 자신 (레벨 요소 트리)에 사용자의 위치를 관리하는 것을 의미

출처

2014-01-26 18:48:01 AlexS

오른쪽 트랙에 도움을 주셔서 감사 드리며 마지막으로 작업하게되었습니다. –

XML로 SAX 구문 분석

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