网页输出日志文件

网页输出日志文件

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@Controller @RequestMapping("/query/{username}/{password}") public class QueryController {     private HttpServletRequest request;     private HttpServletResponse response;     private String username;     private String password;     final String userdir = System.getProperty("user.dir");     final String logPath = userdir.replace("bin", "logs");       @ModelAttribute     public void init(@PathVariable String username,@PathVariable String password,HttpServletRequest request,HttpServletResponse response){         this.username = username;         this.password = password;         this.request = request;         this.response = response;     }       private void outFile(String path){         File file = new File(path);         try(                 InputStreamReader read = new InputStreamReader(new FileInputStream(file),"UTF-8");                 BufferedReader br=new BufferedReader(read)         ) {             StringBuilder sb = new StringBuilder();             htmlPrefix(sb);             String r = br.readLine();             while (r != null) {                 sb.append("<pre>" + r + "</pre>");                 r = br.readLine();             }             htmlSuffix(sb);             responseOut(response, sb.toString());         } catch (UnsupportedEncodingException e) {             e.printStackTrace();         } catch (FileNotFoundException e) {             e.printStackTrace();         } catch (IOException e) {             e.printStackTrace();         }     }       @RequestMapping("/logFile")     @ResponseBody     public String queryLogFile(String filename) {         if(checkUser()){             if(filename !=null) {                 String path = logPath + "/" + filename;                 outFile(path);             }         }         return null;     }       @RequestMapping("/log")     @ResponseBody     public String queryLog(){         if(checkUser()) {             StringBuilder sb = new StringBuilder();             htmlPrefix(sb);             File file = new File(logPath);             File[] list = file.listFiles();             for (File file1 : list) {                 if (file1.isFile())                     sb.append("<a href=\"logFile?filename=" + file1.getName() + "\" target=\"_blank\">" + file1.getName() + "</a><br/>");             }             htmlSuffix(sb);             return sb.toString();         }         return null;     }       @RequestMapping("/loggerFile")     @ResponseBody     public String queryLoggerFile(String dir,String filename)  {         if(checkUser()){             if(dir!=null && filename !=null) {                 String path = userdir + "/" + dir + "/" + filename;                 outFile(path);             }         }return null;     }       /**      * 查询 logger插件生成的目录      * @return      */     @RequestMapping("/logger")     @ResponseBody     public String queryLogger(@RequestParam(required = false) String dir){         if(checkUser()) {             StringBuilder sb = new StringBuilder();             htmlPrefix(sb);             String path = userdir;             if(dir !=null){                 path = path +"/"+dir;             }             File file = new File(path);             File[] list = file.listFiles();             for (File file1 : list) {                 if(file1.isDirectory())                     sb.append("<a href=\"logger?dir="+file1.getName()+"\">"+file1.getName()+"</a><br/>");             }             if(dir!=null) {                 for (File file1 : list) {                     if (file1.isFile())                         sb.append("<a href=\"loggerFile?dir=" + dir + "&filename=" + file1.getName() + "\" target=\"_blank\">" + file1.getName() + "</a><br/>");                 }             }             htmlSuffix(sb);             return sb.toString();         }         return null;     }       private void htmlPrefix(StringBuilder sb){         sb.append("<!DOCTYPE html>");         sb.append("<html lang=\"zh-CN\">");         sb.append("<head>");         sb.append("<meta charset=\"utf-8\">");         sb.append("<title>LOGGER</title>");         sb.append("</head>");         sb.append("<body>");     }     private void htmlSuffix(StringBuilder sb){         sb.append("</body>");         sb.append("</html>");     }       /**      * 验证      * @return      */     private boolean checkUser(){         if(username!=null && password !=null){             if(username.equals("user") && password.equals("password")){                 return true;             }         }         return false;     }       /**      * 输出文字      *      * @param response      * @param s      */     private static void responseOut(HttpServletResponse response, String s) {         response.setContentType("text/html;charset=UTF-8");         response.setCharacterEncoding("UTF-8");         try (                 PrintWriter pw = response.getWriter()         ) {             pw.write(s);         } catch (IOException e) {             e.printStackTrace();         }     } }