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package 
com.sun.xml;
 
import 
java.io.File;
import 
java.io.FileInputStream;
import 
java.io.FileNotFoundException;
import 
java.io.FileOutputStream;
import 
java.io.IOException;
import 
java.io.InputStreamReader;
import 
java.io.UnsupportedEncodingException;
import 
java.util.Iterator;
import 
java.util.List;
 
 
 
import 
org.dom4j.Document;
import 
org.dom4j.DocumentException;
import 
org.dom4j.Element;
import 
org.dom4j.io.OutputFormat;
import 
org.dom4j.io.SAXReader;
import 
org.dom4j.io.XMLWriter;
 
public 
class 
ReadXmlBySaxReader {
    
public 
static 
void 
main(String[] args) 
throws 
IOException {
        
String path=
"C:\\Users\\Administrator\\Desktop\\bookstore.xml"
;
        
Document document=getDocument(path);
        
getNode(document);
        
updateEle(
"aaaa"
, document,path);
        
addEle(document, 
"编程书籍"
, path);
    
}
    
public 
static 
Document getDocument(String path) 
throws 
UnsupportedEncodingException, FileNotFoundException{
        
SAXReader saxReader=
new 
SAXReader();
        
File file=
new 
File(path);
        
Document document=
null
;
        
InputStreamReader inputStreamReader=
new 
InputStreamReader(
new 
FileInputStream(file));
        
try 
{
            
document=saxReader.read(inputStreamReader);
            
return 
document;
        
} 
catch 
(DocumentException e) {
            
// TODO Auto-generated catch block
            
e.printStackTrace();
        
}
        
return 
null
;
    
}
     
    
public 
static 
void 
getNode(Document document){
        
Element element=document.getRootElement();
        
@SuppressWarnings
(
"unchecked"
)
        
List<Element> list=element.elements(
"book"
);
        
Iterator<Element> iterator=list.iterator();
        
while
(iterator.hasNext()){
            
Element node=iterator.next();
            
Element element2=node.element(
"title"
);
            
System.out.println(element2.getText());
        
}
        
System.out.println(
"ss"
);
    
}
    
public 
static 
void 
updateEle(String text,Document document,String path) 
throws 
IOException{
        
Element element=document.getRootElement();
        
@SuppressWarnings
(
"unchecked"
)
        
List<Element> list=element.elements(
"book"
);
        
Iterator<Element> iterator=list.iterator();
        
while
(iterator.hasNext()){
            
Element node=iterator.next();
            
Element element2=node.element(
"title"
);
            
System.out.println(
"title为：   "
+element2.getText());
            
if
(element2.getText().equals(
"ss"
)){
                
element2.setText(
"java书籍"
);
            
}
             
        
}
        
writeXml(document,path);
    
}
     
     
    
public 
static 
void 
addEle(Document document,String text,String path) 
throws 
IOException{
        
Element rootElement=document.getRootElement();
        
Element element=rootElement.addElement(
"book"
);
        
Element element2=element.addElement(
"title"
);
        
Element element3=element.addElement(
"author"
);
        
Element element4=element.addElement(
"price"
);
        
element2.setText(text);
        
element3.setText(
"万福"
);
        
element4.setText(
"39.0"
);
        
writeXml(document, path);
    
}
    
public 
static 
void 
writeXml(Document document,String path) 
throws 
IOException{
        
OutputFormat outputFormat=OutputFormat.createPrettyPrint();
         
        
try 
{
            
XMLWriter xmlWriter=(XMLWriter) 
new 
XMLWriter(
new 
FileOutputStream(path),outputFormat);
            
xmlWriter.write(document);
            
xmlWriter.close();
        
} 
catch 
(UnsupportedEncodingException | FileNotFoundException e) {
            
// TODO Auto-generated catch block
            
e.printStackTrace();
        
}
    
}
}