Пример #1
0
  private static TemplateModel createModel(PageContext pageContext, Map<String, Object> map) {
    ObjectWrapper wrapper = ObjectWrapper.DEFAULT_WRAPPER;
    HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
    HttpServletResponse response = (HttpServletResponse) pageContext.getResponse();
    HttpServlet servlete =
        new ProxyServlet(pageContext.getServletConfig(), pageContext.getServletContext());
    ServletContextHashModel servletContextModel = new ServletContextHashModel(servlete, wrapper);
    ServletActionContext.getServletContext()
        .setAttribute(ATTR_APPLICATION_MODEL, servletContextModel);
    TaglibFactory taglibs = new TaglibFactory(ServletActionContext.getServletContext());
    ServletActionContext.getServletContext().setAttribute(ATTR_JSP_TAGLIBS_MODEL, taglibs);
    AllHttpScopesHashModel params =
        new AllHttpScopesHashModel(wrapper, pageContext.getServletContext(), request);
    params.putUnlistedModel(KEY_APPLICATION, servletContextModel);
    params.putUnlistedModel(KEY_APPLICATION_PRIVATE, servletContextModel);
    params.putUnlistedModel(
        KEY_JSP_TAGLIBS,
        (TemplateModel)
            ServletActionContext.getServletContext().getAttribute(ATTR_JSP_TAGLIBS_MODEL));

    // Create hash model wrapper for session
    HttpSessionHashModel sessionModel;
    HttpSession session = request.getSession(false);
    sessionModel = (HttpSessionHashModel) session.getAttribute(ATTR_SESSION_MODEL);
    if (sessionModel == null) {
      sessionModel = new HttpSessionHashModel(session, wrapper);
      session.setAttribute(ATTR_SESSION_MODEL, sessionModel);
    }
    params.putUnlistedModel(KEY_SESSION, sessionModel);

    // Create hash model wrapper for request
    HttpRequestHashModel requestModel =
        (HttpRequestHashModel) request.getAttribute(ATTR_REQUEST_MODEL);
    if (requestModel == null || requestModel.getRequest() != request) {
      requestModel = new HttpRequestHashModel(request, response, wrapper);
      request.setAttribute(ATTR_REQUEST_MODEL, requestModel);
      request.setAttribute(
          ATTR_REQUEST_PARAMETERS_MODEL, new HttpRequestParametersHashModel(request));
    }
    params.putUnlistedModel(KEY_REQUEST, requestModel);
    params.putUnlistedModel(KEY_INCLUDE, new IncludePage(request, response));
    params.putUnlistedModel(KEY_REQUEST_PRIVATE, requestModel);

    // Create hash model wrapper for request parameters
    HttpRequestParametersHashModel requestParametersModel =
        (HttpRequestParametersHashModel) request.getAttribute(ATTR_REQUEST_PARAMETERS_MODEL);
    params.putUnlistedModel(KEY_REQUEST_PARAMETERS, requestParametersModel);
    // 将用户数据放入model中
    params.putAll(map);
    return params;
  }
  /**
   * Replace, add or remove query parameters in the current request and return the new query part of
   * the request. You can remove a query parameter by providing an empty string or null as value.
   *
   * @param hr
   * @param params array of name/value like params[0]="name" and params[1] = "values". Length of the
   *     array must be even.
   * @return query part only e.g. view=table&filter=auto or null if the params array is odd.
   */
  public static String replaceCurrentQueryParams(HttpRequestHashModel hr, String... params) {
    UriComponentsBuilder bldr = ServletUriComponentsBuilder.fromRequest(hr.getRequest());

    if (params.length % 2 != 0) {
      return null;
    }
    for (int i = 0; i < params.length; i += 2) {
      // if the value is blank, remove the parameter
      if (StringUtils.isBlank(params[i + 1])) {
        bldr.replaceQueryParam(params[i]);
      } else {
        bldr.replaceQueryParam(params[i], params[i + 1]);
      }
    }
    return bldr.build().getQuery();
  }
 /**
  * Replace or add a query parameter in the current request and return the new query part of the
  * request.
  *
  * @param hr HttpRequestHashModel from Freemarker template (variable Request)
  * @param name query string parameter to add or change
  * @param value value of the query string parameter
  * @return query part only e.g. view=table&filter=auto
  */
 public static String replaceCurrentQueryParam(
     HttpRequestHashModel hr, String name, String value) {
   UriComponentsBuilder bldr = ServletUriComponentsBuilder.fromRequest(hr.getRequest());
   bldr.replaceQueryParam(name, value);
   return bldr.build().getQuery();
 }
 /**
  * Get absolute URL from HttpRequestHashModel and remove a query string parameter.
  *
  * @param hr from Freemarker template (variable Request)
  * @param name query string parameter to remove
  * @return absolute URL as String
  */
 public static String getURLRemoveQueryParam(HttpRequestHashModel hr, String name) {
   UriComponentsBuilder bldr = ServletUriComponentsBuilder.fromRequest(hr.getRequest());
   bldr.replaceQueryParam(name);
   return bldr.build().toUriString();
 }