fileservlet.java

java版源代码,里面包含很多源代码,大家可以看看.

      }

    }

  }

  /**
   * 执行doGet操作
   * @return String
   * @param request 请求
   * @param response response
   * @param Parser SQL解析器
   * @throws Exception
   */
  protected String PerformGet(HttpServletRequest request,
                              HttpServletResponse response,
                              FileSQLParser Parser) throws
      Exception {

    return PerformPost(request, response, Parser);
  }

  /**
   * 执行doPost操作
   * @return String
   * @param request 请求
   * @param response response
   * @param Parser SQL解析器
   * @throws Exception
   */
  protected String PerformPost(HttpServletRequest request,
                               HttpServletResponse response,
                               FileSQLParser Parser) throws
      Exception {

    try {
      String MethodName = com.trulytech.mantis.system.Properties.Action_Prefix + getParameter(Parser,
                                       com.trulytech.mantis.system.Properties.
                                       Action_Tag);

      Class[] cl = new Class[3];
      cl[0] = Class.forName("javax.servlet.http.HttpServletRequest");
      cl[1] = Class.forName("javax.servlet.http.HttpServletResponse");
      cl[2] = Class.forName("com.trulytech.mantis.system.FileSQLParser");

      Object[] obj = new Object[3];
      obj[0] = request;
      obj[1] = response;
      obj[2] = Parser;

      Method method = this.getClass().getMethod(MethodName, cl);
      return (String) method.invoke(this, obj);
    }

    catch (NoSuchMethodException e) {

      logWriter.Error(e.toString() + " (" + this.getClass().getName() + ")");
      return alert(request, response, Parser);
    }

  }

  /**
   * 执行doPost操作 (不允许继承）
   * @return String
   * @param request 请求
   * @param response response
   * @param Parser SQL解析器
   * @throws Exception
   */
  final protected String PerformPost(HttpServletRequest request,
                                     HttpServletResponse response,
                                     SQLParser Parser) throws
      Exception {

    return super.PerformPost(request, response, Parser);
  }

  /**
   * 获得输入参数，处理非空字段
   * @param Parser 请求
   * @param Name 名称
   * @return String
   */
  protected String getParameter(FileSQLParser Parser, String Name) {

    String tmpStr = Parser.getUpload().getRequest().getParameter(Name);
    if (tmpStr == null)
      tmpStr = "";
    return tmpStr;
  }

  /**
   * 获得多个输入参数，处理非空字段
   * @param Parser 请求
   * @param Name 名称
   * @return ArrayList
   */
  protected ArrayList getParameters(FileSQLParser Parser, String Name) {
    ArrayList list = new ArrayList();
    String tmpStr[] = Parser.getUpload().getRequest().getParameterValues(Name);
    if (tmpStr != null) {
      for (int i = 0; i < tmpStr.length; i++) {
        if (tmpStr[i] == null)
          tmpStr[i] = "";
        list.add(tmpStr[i]);
      }
    }
    return list;
  }

  /**
   * 显示非法提示
   * @return String
   * @param request request
   * @param response response
   * @param Parser Parser
   * @throws java.lang.Exception Exception
   */
  protected String alert(HttpServletRequest request,
                         HttpServletResponse response, FileSQLParser Parser) throws
      Exception {
    //如果是reponse信息
   if (com.trulytech.mantis.system.Properties.isResponseAlert) {
     response.sendError(HttpServletResponse.SC_FORBIDDEN);
     return "";
   }
   //如果是自定义错误
   else
   {

    String info = null;
    if (com.trulytech.mantis.system.Properties.isInternational)
      info = InternationalManager.getResource(request,
                                              com.trulytech.mantis.system.
                                              Properties.KeyBadCommand);
    else
      info = "操作非法！";
    logWriter.Error("操作非法！(" + this.getClass().getName() +
                    "-" +
                    getParameter(Parser,
                                 com.trulytech.mantis.system.Properties.
                                 Action_Tag) +
                    ")");
    request.setAttribute("Info", info);
    request.setAttribute("Action", "javascript:history.back();");
    return (com.trulytech.mantis.system.Properties.AlertURL);
   }
  }

  /**
   * 身份校验，判断用户是否有相关权限 (不允许子类继承）
   * @param request HttpServletRequest
   * @param response HttpServletResponse
   * @param Parser FileSQLParser
   * @return int
   * @throws Exception
   */
  final protected int HasPermission(HttpServletRequest request,
                                    HttpServletResponse response,
                                    SQLParser Parser) throws
      Exception {
    return super.HasPermission(request, response, Parser);
  }

  /**
   * 身份校验，判断用户是否有相关权限
   * @param request request
   * @param response response
   * @param Parser SQL解分器
   * @return 是否具有权限 是否具有权限 Permission.ERROR-页面超时 Permission.DENY-无权限 Permission.ALLOW-有权限
   * @throws java.lang.Exception
   */
  protected int HasPermission(HttpServletRequest request,
                              HttpServletResponse response,
                              FileSQLParser Parser) throws
      Exception {

    HttpSession session = request.getSession(false);
    if (session == null)
      return Permission.ERROR;
//取用户ID
    else {
      String ID = (String) session.getAttribute(com.trulytech.mantis.system.
                                                Properties.Session_UserID);
      if (ID == null)
        return Permission.ERROR;

//取权限对象
      else {
        Permission perm = (Permission) session.getAttribute(com.trulytech.
            mantis.system.Properties.Session_Permission);
        if (perm == null) {
          if (Properties.HasPermission)
            return Permission.ERROR;
          else
            return Permission.ALLOW;

        }

//判断权限
        else {
          String ServletName = this.getClass().getName();

          int myPos = ServletName.lastIndexOf(".") + 1;
          String className = ServletName.substring(myPos,
              ServletName.length());

          String Action = getParameter(Parser,
                                       com.trulytech.mantis.system.
                                       Properties.
                                       Action_Tag);
          return perm.HasPermission(ID, className, Action, Parser);
        }
      }
    }

  }

  /**
   * 显示无权限信息
   * @param request request
   * @param response response
   * @param Parser Parser
   * @throws java.lang.Exception
   */
  protected void showinvalidate(HttpServletRequest request,
                                HttpServletResponse response,
                                FileSQLParser Parser) throws
      Exception {
    //如果是reponse信息
   if (com.trulytech.mantis.system.Properties.isResponseAlert) {
     response.sendError(HttpServletResponse.SC_UNAUTHORIZED);

   }
   //如果是错误信息
else
   {
    String info = null;
    if (com.trulytech.mantis.system.Properties.isInternational)
      info = InternationalManager.getResource(request,
                                              com.trulytech.mantis.system.
                                              Properties.KeyPermissionDeny);
    else
      info = "该用户尚无此权限！";
    logWriter.Info("该用户尚无此权限！(" + this.getClass().getName() +
                   "-" +
                   getParameter(Parser,
                                com.trulytech.mantis.system.Properties.
                                Action_Tag) +
                   ")");
    request.setAttribute("Info", info);
    request.setAttribute("Action", "javascript:history.back();");
    Dispatch(request, response, com.trulytech.mantis.system.Properties.AlertURL);
   }
  }

  /**
   * 设置Upload最大文件大小
   * @return long
   */
  protected long setUploadMaxSize() {
    return Properties.UploadMaxSize;
  }
}