maven学习

public class  {
	public static void writeLog(String content) {
        try {
        	SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    		HttpSession session = WebContextFactory.get().getSession();//设置操作人员
    		String operator = (String)session.getAttribute("userName");
        	String fileName = Init.getDir("log");
            //打开一个写文件器，构造函数中的第二个参数true表示以追加形式写文件
            FileWriter writer = new FileWriter(fileName, true);
            writer.write(df.format(new Date()) + ' ' + operator + ' '+ content + "rn");
            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
	
public static String readLog() throws IOException{
	 String fileName = Init.getDir("log");
     File file=new File(fileName);
     if(!file.exists()||file.isDirectory())
         throw new FileNotFoundException();
     BufferedReader br=new BufferedReader(new FileReader(file));
     String temp=null;
     StringBuffer sb=new StringBuffer();
     temp=br.readLine();
     while(temp!=null){
    	 temp += "rn";
         sb.insert(0, temp);
         temp=br.readLine();
     }
     br.close();
     return sb.toString();
 } 
}