JAVA read and write files

1       /** 
2       * 
 3       * @Description: write file
 4       * @param  @param url The path to be written to the server
 5       * @param  @param fileName The file name to be written needs to be prefixed such as .txt
 6       * @param  @param bodydata The content to be written 
 7       * @param  @return returns 1 on success, 0 on failure
 8       * @return String
 9       */ 
10      public  static String writeFile (String url,String fileName, byte [] bodydata){
 11          StringBuffer sb =new StringBuffer();
12         String message = "";
13         try{
14             sb.append(url).append(fileName);
15             BufferedWriter  bw = new BufferedWriter(new OutputStreamWriter(new BufferedOutputStream(new FileOutputStream(sb.toString(), true)), "UTF-8"));
16                 bw.write(new String(bodydata,"UTF-8"));
17             message = "1";
18             bw.flush();
19             bw.close();
20              System.out.println("Running!!!" );
 21          } catch (Exception e){
 22              message = "0" ;
 23              e.printStackTrace();
 24          }
 25          return message;
 26      }
 27  
28        /* * 
29       * 
 30       * @Description: read file
 31       * @param  @param filename file path name plus file name
 32       * @param  @return  
33       * @return byte[]
 34       */
35     public static byte[] readFileByte(String filename){  
36         BufferedInputStream in = null; 
37         ByteArrayOutputStream bos = null;
38         try{
39             File file = new File(filename);  
40             if(file.isFile() && file.exists()){ //判断文件是否存在
41                 bos = new ByteArrayOutputStream((int)file.length());  
42                 in = new BufferedInputStream(new FileInputStream(file));  
43                 int buf_size = 1024;  
44                 byte[] buffer = new byte[buf_size];  
45                 int len = 0;  
46                 while(-1 != (len = in.read(buffer,0,buf_size))){  
47                     bos.write(buffer,0,len);  
48                 }  
49             }else{
50                 System.out.println("找不到指定的文件");
51             }
52             in.close(); 
53             bos.close(); 
54          } catch (Exception e){
 55              e.printStackTrace();
 56          }
 57          return bos.toByteArray();  
 58       }
 59  
60        /** 
61       * 
 62       * @Description: read file
 63       * @param  @param filepath to read The path of the file plus the file name
 64       * @param  @param encoding Encoding format
 65       * @param  @return Returns 1 for success, returns 0 for failure
 66       * @return String
 67       */ 
68     public static String readFileLine(String filepath,String encoding) {
69         String message = "";
70         try {
71             File file=new File(filepath);
72             if(file.isFile() && file.exists()){ //判断文件是否存在
73                 InputStreamReader read = new InputStreamReader(new FileInputStream(file),encoding);//考虑到编码格式
74                 BufferedReader bufferedReader = new BufferedReader(read);
75                 String lineTxt = null;
 76                  while ((lineTxt = bufferedReader.readLine()) != null ){
 77                      System.out.println(lineTxt);
 78                  }
 79                  read.close();
 80              } else {
 81                  System.out.println("Find The specified file cannot be found" );
 82              }
 83           } catch (Exception e) {
 84               System.out.println("Error reading file content" );
 85               e.printStackTrace();
 86           }
 87          return message;
88     }