//基于jdom...
import java.util.*;
import java.io.*;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.*;
import javax.xml.transform.stream.*;
import org.w3c.dom.*;

public class CreateXML
{
    DocumentBuilderFactory factory=null;
    DocumentBuilder builder=null;
    org.w3c.dom.Document myDocument = null;

    //創建XML文件
   //要創建的XML名字和路進
 public void ctrateXMlFile(String file)
 {
  Element carElement = new Element("web-app");//建立元素
  Document myDocument = new Document(carElement);//建立一個文檔并指定根元素

  try
  {
      XMLOutputter outputter = new XMLOutputter();
      outputter.output(myDocument, System.out);
      FileWriter writer = new FileWriter(file);
      outputter.output(myDocument, writer);
      writer.close();
  }
  catch (java.io.IOException e)
  {
      e.printStackTrace();
  }
 }

    //增加節點
   //第1個參數:要增加節點的名字,第2個參數:要修改xml的路進名
 public void addXMLNode(String nodeName,String xmlFile)
 {
         try
         {
           Element element=null;
           SAXBuilder builder = new SAXBuilder();
           Document doc = builder.build(new File(xmlFile));

           if(doc.getRootElement().getChild(nodeName)!=null)
           {
             System.out.println("該節點以存在！");
           }
           else
           {
             element =new Element(nodeName);
             doc.getRootElement().addContent(element);
             XMLOutputter fmt = new XMLOutputter();
             fmt.output(doc, System.out);
             FileWriter writer = new FileWriter(xmlFile);
             fmt.output(doc, writer);
             writer.close();
            }
          }
         catch(Exception ex)
         {
          ex.printStackTrace();
         }

   }

    //增加節點屬性
   //第1個參數:要增加屬性的節點的名字,第2個參數:要增加屬性的名字,第3個參數:屬性的值,第4個參數:要修改xml的路進名
 public void setXMLNodeAttribute(String nodeName,String attribute,String value,String xmlFile)
 {
  try
  {
   SAXBuilder builder = new SAXBuilder();
   Document doc = builder.build(new File(xmlFile));
   Element e=doc.getRootElement();
      //System.out.println("a"+ e.getChild("servlet"));
    if(e.getChild(nodeName)==null)
    {
      System.out.println("該節點不存在!");
     }
    else
    {
      e.getChild(nodeName).setAttribute(attribute,value);
      XMLOutputter fmt = new XMLOutputter();
            fmt.output(doc, System.out);
            FileWriter writer = new FileWriter(xmlFile);
            fmt.output(doc, writer);
      writer.close();
      }
    }
   catch(Exception ex)
   {
         ex.printStackTrace();
     }
 }

    //增加接點內容
   //第1個參數:要增加內容的節點的名字,第2個參數:要增加的內容,第3個參數:要修改xml的路進名
 public void setXMLNodeContent(String nodeName,String content,String xmlFile){
  try{
   SAXBuilder builder = new SAXBuilder();
   Document doc = builder.build(new File(xmlFile));
   Element e=doc.getRootElement();
   //System.out.println("a"+ e.getChild("servlet"));
   if(e.getChild(nodeName)==null){
    System.out.println("該節點不存在!");
   }
   else if(e.getChild(nodeName).getText().equals(content)){
    System.out.println("該節點內容以存在!");

   }
   else{
    e.getChild(nodeName).addContent(content);
   XMLOutputter fmt = new XMLOutputter();
   fmt.output(doc, System.out);
   FileWriter writer = new FileWriter(xmlFile);
   fmt.output(doc, writer);
   writer.close();
   }
  }
  catch(Exception ex){
   ex.printStackTrace();
  }
 }
    //增加子接點
   //第1個參數:要增子節點的節點的名字,第2個參數:要增加的子節點的名字,第3個參數:要修改xml的路進名
 public void setXMLChildNode(String nodeName,String childName,String xmlFile){
  try{
   SAXBuilder builder = new SAXBuilder();
   Document doc = builder.build(new File(xmlFile));
   Element e=doc.getRootElement();
            if(e.getChild(nodeName)==null){
    System.out.println("該節點不存在!");
   }
   else if(e.getChild(nodeName).getChild(childName)!=null){
    System.out.println("該子節點以存在!");
   }
   else{
    Element child=new Element(childName);
    e.getChild(nodeName).addContent(child);
    XMLOutputter fmt = new XMLOutputter();
    fmt.output(doc, System.out);
    FileWriter writer = new FileWriter(xmlFile);
    fmt.output(doc, writer);
    writer.close();
   }
  }
  catch(Exception ex){
   ex.printStackTrace();
  }
 }
 //增加子節點屬性
   //第1個參數:節點的名字,第2個參數:要增加屬性的子節點的名字,第3個參數:屬性的名字,第4個參數:屬性的值,第4個參數:要修改xml的路進名
    public void setXMLChildNodeAttribute(String nodeName,String childName,String attribute,String value,String xmlFile){
  try{
   SAXBuilder builder = new SAXBuilder();
   Document doc = builder.build(new File(xmlFile));
   Element e=doc.getRootElement();
      if(e.getChild(nodeName)==null){
    System.out.println("該節點不存在!");
   }
   else if(e.getChild(nodeName).getChild(childName)==null){
    System.out.println("該子節點不存在!");
   }
   else{
    e.getChild(nodeName).getChild(childName).setAttribute(attribute,value);
    XMLOutputter fmt = new XMLOutputter();
    fmt.output(doc, System.out);
    FileWriter writer = new FileWriter(xmlFile);
    fmt.output(doc, writer);
    writer.close();
   }
  }
  catch(Exception ex){
   ex.printStackTrace();
  }
    }
 //增加子節點的內容
   //第1個參數:節點的名字,第2個參數:要增加屬性的子節點的名字,第3個參數:要增加的內容,第4個參數:要修改xml的路進名
 public void setXMLChildNodeContent(String nodeName,String childName,String content,String xmlFile){
  try{
   SAXBuilder builder = new SAXBuilder();
   Document doc = builder.build(new File(xmlFile));
   Element e=doc.getRootElement();
      if(e.getChild(nodeName)==null){
    System.out.println("該節點不存在!");
   }
   else if(e.getChild(nodeName).getChild(childName).getText().equals(content)){
    System.out.println("該子節點內容以存在!");
   }
   else if(e.getChild(nodeName).getChild(childName)==null){
    System.out.println("該子節點不存在!");
   }
   else{
    e.getChild(nodeName).getChild(childName).addContent(content);
    XMLOutputter fmt = new XMLOutputter();
    fmt.output(doc, System.out);
    FileWriter writer = new FileWriter(xmlFile);
    fmt.output(doc, writer);
    writer.close();
   }
  }
  catch(Exception ex){
   ex.printStackTrace();
  }
 }
 //刪除節點
   //第1個參數:要刪除的節點名字,第2個參數:要修改xml的路進名
 public void removeXMLNode(String nodeName,String xmlFile){
  try{
   SAXBuilder builder = new SAXBuilder();
   Document doc = builder.build(new File(xmlFile));
   Element e=doc.getRootElement();
      if(e.getChild(nodeName)==null){
    System.out.println("該節點不存在!");
   }
   else{
    e.removeChild(nodeName);
   XMLOutputter fmt = new XMLOutputter();
   fmt.output(doc, System.out);
   FileWriter writer = new FileWriter(xmlFile);
   fmt.output(doc, writer);
   writer.close();
   }
  }
  catch(Exception ex){
   ex.printStackTrace();
  }
 }
 //刪除子節點
   //第1個參數:節點名字,第2個參數:要刪除的子節點的名字,第3個參數:要修改xml的路進名
 public void removeXMLChildNode(String nodeName,String childName,String xmlFile){
  try{
   SAXBuilder builder = new SAXBuilder();
   Document doc = builder.build(new File(xmlFile));
   Element e=doc.getRootElement();
   //System.out.println("a"+ e.getChild("servlet"));
   if(e.getChild(nodeName)==null){
    System.out.println("該節點不存在!");
   }
   else if(e.getChild(nodeName).getChild(childName)==null){
    System.out.println("該子節點不存在!");
   }
   else{
   e.getChild(nodeName).removeChild(childName);
   XMLOutputter fmt = new XMLOutputter();
   fmt.output(doc, System.out);
   FileWriter writer = new FileWriter(xmlFile);
   fmt.output(doc, writer);
   writer.close();
   }

  }
  catch(Exception ex){
   ex.printStackTrace();
  }
 }
 public static void main(String[] args)throws Exception{
  CreateXML xml=new CreateXML();
  //新建xml
  xml.ctrateXMlFile("create.xml");
  //增加節點
  xml.addXMLNode("zhangbo3","create.xml");
  //增加節點屬性
  xml.setXMLNodeAttribute("zhangbo3","name","zhangbo","create.xml");
  //增加節點的內容
  xml.setXMLNodeContent("zhangbo3","white-collar","create.xml");
  //增加子節點
  xml.setXMLChildNode("zhangbo3","mapping","create.xml");
  //增加子節點的屬性
  xml.setXMLChildNodeAttribute("zhangbo3","mapping","name","struts-config.xml","create.xml");
  //增加子節點的內容
  xml.setXMLChildNodeContent("zhangbo3","mapping","hello word!","create.xml");
  //刪除節點
  //xml.removeXMLNode("zhangbo3","create.xml");
  //刪除子節點
  //xml.removeXMLChildNode("zhangbo3","mapping","create.xml");
 }
}