遍历项目文件夹下的所有文件

package com.huawei.test;

import java.io.File;
import java.io.FileOutputStream;
import java.util.List;

import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;

public class InsertElement {

/**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {


//递归项目文件夹下的所有文件夹及其中文件
  File root = new File("E:\\eclipse3.6space\\Task");
  showAllFiles(root);
}

final static void showAllFiles(File dir) throws Exception{
  File[] fs = dir.listFiles();
  for(int i=0; i<fs.length; i++){
  if(fs[i].getAbsolutePath().contains("strings.xml")
  && !fs[i].getAbsolutePath().contains("large")){
  System.out.println(fs[i].getAbsolutePath());
  }
   if(fs[i].isDirectory()){
    try{
     showAllFiles(fs[i]);
    }catch(Exception e){}
   }
  }
 
try { 
OutputFormat format = OutputFormat.createPrettyPrint(); 
format.setEncoding("utf-8"); 
            SAXReader reader = new SAXReader(); 
            Document document = reader.read("C:\\Users\\Administrator\\Desktop\\strings.xml"); 
            Element root = document.getRootElement(); 
            List<Element> elements = root.elements(); 
            int index = 0; 
            for(Element element:elements){ 
                index++; 
                if("app_name".equals(element.attributeValue("name"))){ 
                    Element elem = DocumentHelper.createElement("string");
                    elem.addAttribute("name", "bbb"); 
                    elem.setText("ppppppp");
//                    elem.addAttribute("name", "ccc"); 
                    elements.add(index,elem); 
                    break; 
                } 
            } 
           
            OutputFormat format1 = OutputFormat.createPrettyPrint();//缩减型格式
          //OutputFormat format = OutputFormat.createCompactFormat();//紧凑型格式
          format1.setEncoding("utf-8");//设置编码
//          //format.setTrimText(false);//设置text中是否要删除其中多余的空格
            org.dom4j.io.XMLWriter xmlWriter = new org.dom4j.io.XMLWriter(
                    new FileOutputStream( new File("C:\\Users\\Administrator\\Desktop\\strings.xml")),format1);
//            XMLWriter writer = new XMLWriter(new FileWriter("C:\\Users\\Administrator\\Desktop\\strings.xml"),format); 
            xmlWriter.write(document); 
            xmlWriter.close(); 
        } catch (Exception e) { 
            // TODO Auto-generated catch block 
            e.printStackTrace(); 
        } 

}

}