2回答

• 

  慕粉3170877

  2016-09-02 16:59:13

  package com.imooc.test;
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.OutputStream;
  import java.util.ArrayList;
  import javax.xml.parsers.ParserConfigurationException;
  import javax.xml.parsers.SAXParser;
  import javax.xml.parsers.SAXParserFactory;
  import javax.xml.transform.OutputKeys;
  import javax.xml.transform.Result;
  import javax.xml.transform.Transformer;
  import javax.xml.transform.TransformerConfigurationException;
  import javax.xml.transform.sax.SAXTransformerFactory;
  import javax.xml.transform.sax.TransformerHandler;
  import javax.xml.transform.stream.StreamResult;
  import org.xml.sax.SAXException;
  import org.xml.sax.SAXParseException;
  import org.xml.sax.helpers.AttributesImpl;
  public class SaxTest {
   
    public  ArrayList<Book> xmlParse(){
     SAXParserFactory factory=SAXParserFactory.newInstance();
     HandlerTest handler=null;  
     try {
      SAXParser parser=factory.newSAXParser();
       handler=new HandlerTest();
         parser.parse("f:\\books.xml",handler); 
      /*  System.out.println("----共有"+handler.getBookList().size()+"本书-----"); 
        for(Book book1:handler.getBookList()){//遍历booList中的内容
         System.out.println("===========开始==========");
         System.out.println(book1.getID());
         System.out.println(book1.getName());
         System.out.println(book1.getAuthor());
         System.out.println(book1.getYear());
         System.out.println(book1.getPrice());
         System.out.println(book1.getLanguage());
         System.out.println("===========结束==========");
        }*/
     
     } catch (ParserConfigurationException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     } catch (SAXException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
     } catch (IOException e) {
       // TODO Auto-generated catch block
       e.printStackTrace();
      }
           return handler.getBookList();
          }
     
    public void xmlCreate(){
     ArrayList<Book> booklist=xmlParse();
    SAXTransformerFactory tff=(SAXTransformerFactory) SAXTransformerFactory.newInstance();
    try {
     TransformerHandler handler=tff.newTransformerHandler();
     Transformer tf=handler.getTransformer();
     tf.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
     tf.setOutputProperty(OutputKeys.INDENT, "yes");
     File f=new File("src/res/newbooks.xml");
     if(!f.exists()){
         f.createNewFile();
     }
     Result result=new StreamResult(new FileOutputStream(f));
     handler.setResult(result);
     handler.startDocument();
     AttributesImpl attr=new AttributesImpl();
     handler.startElement("","","bookStore",attr);
     for(Book book:booklist){
     attr.clear();
     attr.addAttribute("", "", "id","",book.getID());
           handler.startElement("","","book",attr);
          
           if(book.getName()!=null&&!book.getName().trim().equals("")){
              attr.clear();
              handler.startElement("", "","name", attr); 
              handler.characters(book.getName().toCharArray(), 0,book.getName().length());
               handler.endElement("","","name");
           }
          
           
          
           if(!book.getAuthor().equals(null)&&!book.getAuthor().trim().equals("")){
             attr.clear();
                handler.startElement("", "","author", attr);
                handler.characters(book.getAuthor().toCharArray(), 0,book.getAuthor().length());
                 handler.endElement("","","author");
           }
              
             if(book.getYear()!=null&&!book.getYear().trim().equals("")){
            attr.clear();
            handler.startElement("", "","year", attr);          
               handler.characters(book.getYear().toCharArray(), 0,book.getYear().length());
               handler.endElement("","","year");         
           }
              if(book.getLanguage()!=null&&!book.getLanguage().trim().equals("")){
            attr.clear();
            handler.startElement("", "","language", attr);          
               handler.characters(book.getLanguage().toCharArray(), 0,book.getLanguage().length());
               handler.endElement("","","language");         
           }
              if(book.getPrice()!=null&&!book.getPrice().trim().equals("")){
            attr.clear();
            handler.startElement("", "","price", attr);          
               handler.characters(book.getPrice().toCharArray(), 0,book.getPrice().length());
               handler.endElement("","","price");         
           }
      
              handler.endElement("","","book");
     }
     handler.endElement("","","bookStore");
     handler.endDocument();
     
     
    } catch (TransformerConfigurationException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    } catch (FileNotFoundException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
   }catch (IOException e) {
       // TODO Auto-generated catch block
       e.printStackTrace();
   }catch (SAXException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   } 
    }  
   public static void main(String[] args) {
    // TODO Auto-generated method stub
   SaxTest test=new SaxTest();
   test.xmlCreate();
   }
  }

  代码的位置放置不对

  0 0
• 

  慕莱坞8031794

  2016-04-13 20:48:48

  估计是你的代码漏了这一句：tfhandler.endElement("", "", "book");

  0 0