Use file method

package com.ibm.tpc.test.doh;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.List;

import javax.ws.rs.FormParam;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;


/**
* This class is for dealing with test log
* @version 1.0
* @author CHENGSHUAI
*
*/
@Path ("/TestLogCreator")
public class TestLogCreator {

    @POST
    @Produces ("application/json")
    public String createHTMLFile(@FormParam("logstatus") String logstatus, @FormParam("logmoudle") String logmoudle
    , @FormParam("maxLogCount") int maxLogCount) {
   
    String result = "success";
   
    Date date = new Date();
String dateFormat = new SimpleDateFormat("HHmmss").format(date);

    String moudleDir = getMoudleDir(logmoudle);

    String projectdir = getProjectDir();
    projectdir += moudleDir;
    File createdirf = new File(projectdir);
    if(!createdirf.exists()){
    createdirf.mkdirs();
    }
    //Get file list by Modified
    List <File> filelist = reArrange(createdirf.listFiles());
   
for(int i = 0;i < filelist.size()-maxLogCount+1;i++){   
filelist.get(i).delete();
}
    //create report *.html" file in workspace.
    projectdir +=  "dohreport" + dateFormat + ".html";
    projectdir = projectdir.replace("/", "\\");
    File f = new File(projectdir);
    FileOutputStream fos = null;
    try {
    fos = new FileOutputStream(f);
fos.write(logstatus.getBytes());
} catch (IOException e) {
e.printStackTrace();
result = "failure";
}finally{
if(fos != null){
try {
fos.close();
} catch (IOException e) {
e.printStackTrace();
}

}
}

//create report "dohreport.html" file in server space.
    String resourceDir = getResourceDir();
    File fweb = new File(resourceDir + "/dohreport.html");
    FileOutputStream fosweb = null;
try {
fosweb = new FileOutputStream(fweb);
fosweb.write(logstatus.getBytes());
} catch (IOException e) {
e.printStackTrace();
result = "failure";
}finally{
if(fosweb != null){
try {
fosweb.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
   
    return result;
    }
    /**
     * Get the path of test moudle
     * @param moudle
     * @return
     */
    private String getMoudleDir(String moudle){
    String moudleDir = "";
String [] moudleArr = moudle.split("\\.");
for(int i = 2; i < moudleArr.length-1; i++){
moudleDir += moudleArr[i] + "/";
}
    return moudleDir;
    }
    /**
     * Get project absolute direction by path of the classes which been put in server.
     * So different version web server may change this function.
     * @return String
     */
    private String getProjectDir(){
    String resourceDir = getResourceDir();

    String placeName = resourceDir.split(".metadata")[0];
    String [] projectTemp = resourceDir.split("/");
    String projectName = projectTemp[projectTemp.length-1];
   
    return placeName + projectName + "/WebContent/devDojo/tpc/tests/logs/" ;
    }
   
    /**
     * The method get class path from the web server;
     * @return String
     */
    private String getResourceDir(){
    String resourceDir = Thread.currentThread().getContextClassLoader().getResource("").getPath().split("/WEB-INF")[0];
    if(resourceDir.indexOf("/") == 0){
    resourceDir = resourceDir.replaceFirst("/", "");
    }
    return resourceDir;
    }
    /**
     * Rearrange the File array by modified time, and return the new list.
     * @param fileArr
     * @return
     */
    private List <File> reArrange(File [] fileArr){
    List <File> filelist = new ArrayList<File>(fileArr.length);
    for ( File f : fileArr){
    filelist.add(f);
    }
    Collections.sort(filelist, new Comparator<File>(){
@Override
public int compare(File f1, File f2) {

return (int) (f1.lastModified()-f2.lastModified());
}
   
    });
    return filelist;
    }
   
}