将字符串写进txt中方式

try {  
           File file = new File(filePath);  
            PrintStream ps = new PrintStream(new FileOutputStream(file));  
            ps.println("http://www.docin.com/p-315288370.html");// 往文件里写入字符串  
            ps.append("http://www.docin.com/p-315288370.html");// 在已有的基础上添加字符串  
         } catch (FileNotFoundException e) {  
             // TODO Auto-generated catch block  
             e.printStackTrace();  
 }  


 try {  
            FileWriter fw = new FileWriter(filePath, true);  
            BufferedWriter bw = new BufferedWriter(fw);  
            bw.append("在已有的基础上添加字符串");  
            bw.write("abc\r\n ");// 往已有的文件上添加字符串  
             bw.write("def\r\n ");  
             bw.write("hijk ");  
           bw.close();  
           fw.close();  
        } catch (Exception e) {  
           // TODO Auto-generated catch block  
           e.printStackTrace();  
  }  


try {  
             PrintWriter pw = new PrintWriter(new FileWriter(filePath));  
            pw.println("abc ");  
             pw.println("def ");  
            pw.println("hef ");  
            pw.close();  
       } catch (IOException e) {  
            // TODO Auto-generated catch block  
           e.printStackTrace();  
        } 



  try {  
             RandomAccessFile rf = new RandomAccessFile(filePath, "rw");  
             rf.writeBytes("op\r\n");  
            rf.writeBytes("app\r\n");  
            rf.writeBytes("hijklllll");  
             rf.close();  
         } catch (IOException e) {  
            e.printStackTrace();  
        }  
 

 try {  
             FileOutputStream fos = new FileOutputStream(filePath);  
             String s = "http://www.docin.com/p-315288370.html";  
             fos.write(s.getBytes());  
            fos.close();  
         } catch (Exception e) {  
             // TODO Auto-generated catch block  
             e.printStackTrace();  
        }