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();
}