Java Code Examples for javax.servlet.jsp.PageContext#getRequest()

/**
 * Includes arbitrary _local_ url as content
 * @param ctx caller's page context
 * @param url local url
 * @throws JspException if something goes wrong
 *
 * Note: Local means Urls in the same application
 */
public static void includeContent(PageContext ctx, String url) throws JspException {
    HttpServletRequest request = (HttpServletRequest) ctx.getRequest();
    HttpServletResponse response = (HttpServletResponse) ctx.getResponse();
    RequestDispatcher rd =
        request.getSession(true).getServletContext().getRequestDispatcher(url);
    if (rd == null) {
        ListTagUtil.write(ctx, "<!-- " + url + " not found -->");
    }
    else {
        try {
            BufferedResponseWrapper wrapper = new BufferedResponseWrapper(response);
            rd.include(request, wrapper);
            wrapper.flush();
            ListTagUtil.write(ctx, wrapper.getBufferedOutput());
        }
        catch (Exception e) {
            throw new JspException(e);
        }
    }
}
 

/**
 * リンクとして出力するURLを生成します。
 * @param url パス
 * @param params パスに付与するパラメータ
 * @param pageContext ページコンテキスト
 * @param isHtmlEscape HTMLの特殊文字をエスケープするかどうか
 * @param isJavaScriptEscape JavaScriptの特殊文字をエスケープするかどうか
 * @return パス
 * @throws JspException 予期しない例外
 */
public static String createUrl(String url, Map<String, String[]> params, PageContext pageContext, boolean isHtmlEscape, boolean isJavaScriptEscape) throws JspException {
    HttpServletRequest request = (HttpServletRequest)pageContext.getRequest();
    HttpServletResponse response = (HttpServletResponse)pageContext.getResponse();

    StringBuilder buffer = new StringBuilder();
    UrlType urlType = getUrlType(url);
    if (urlType == UrlType.CONTEXT_RELATIVE) {
        buffer.append(request.getContextPath());
        if (!url.startsWith("/")) {
            buffer.append("/");
        }
    }
    buffer.append(replaceUriTemplateParams(url, params, pageContext));
    buffer.append(createQueryString(params, (url.indexOf("?") == -1), pageContext));

    String urlStr = buffer.toString();
    if (urlType != UrlType.ABSOLUTE) {
        urlStr = response.encodeURL(urlStr);
    }

    urlStr = isHtmlEscape ? HtmlUtils.htmlEscape(urlStr) : urlStr;
    urlStr = isJavaScriptEscape ? JavaScriptUtils.javaScriptEscape(urlStr) : urlStr;

    return urlStr;
}
 

@Test
@SuppressWarnings("rawtypes")
public void requestContext() throws ServletException {
	PageContext pc = createPageContext();
	RequestContext rc = new RequestContext((HttpServletRequest) pc.getRequest(), pc.getServletContext());
	assertEquals("test message", rc.getMessage("test"));
	assertEquals("test message", rc.getMessage("test", (Object[]) null));
	assertEquals("test message", rc.getMessage("test", "default"));
	assertEquals("test message", rc.getMessage("test", (Object[]) null, "default"));
	assertEquals("test arg1 message arg2",
			rc.getMessage("testArgs", new String[] {"arg1", "arg2"}, "default"));
	assertEquals("test arg1 message arg2",
			rc.getMessage("testArgs", Arrays.asList(new String[] {"arg1", "arg2"}), "default"));
	assertEquals("default", rc.getMessage("testa", "default"));
	assertEquals("default", rc.getMessage("testa", (List) null, "default"));
	MessageSourceResolvable resolvable = new DefaultMessageSourceResolvable(new String[] {"test"});
	assertEquals("test message", rc.getMessage(resolvable));
}
 

@Test
@SuppressWarnings("rawtypes")
public void requestContext() throws ServletException {
	PageContext pc = createPageContext();
	RequestContext rc = new RequestContext((HttpServletRequest) pc.getRequest());
	assertEquals("theme test message", rc.getThemeMessage("themetest"));
	assertEquals("theme test message", rc.getThemeMessage("themetest", (String[]) null));
	assertEquals("theme test message", rc.getThemeMessage("themetest", "default"));
	assertEquals("theme test message", rc.getThemeMessage("themetest", (Object[]) null, "default"));
	assertEquals("theme test message arg1",
			rc.getThemeMessage("themetestArgs", new String[] {"arg1"}));
	assertEquals("theme test message arg1",
			rc.getThemeMessage("themetestArgs", Arrays.asList(new String[] {"arg1"})));
	assertEquals("default", rc.getThemeMessage("themetesta", "default"));
	assertEquals("default", rc.getThemeMessage("themetesta", (List) null, "default"));
	MessageSourceResolvable resolvable = new DefaultMessageSourceResolvable(new String[] {"themetest"});
	assertEquals("theme test message", rc.getThemeMessage(resolvable));
}
 

/**
 * Includes arbitrary _local_ url as content
 * @param ctx caller's page context
 * @param url local url
 * @throws JspException if something goes wrong
 *
 * Note: Local means Urls in the same application
 */
public static void includeContent(PageContext ctx, String url) throws JspException {
    HttpServletRequest request = (HttpServletRequest) ctx.getRequest();
    HttpServletResponse response = (HttpServletResponse) ctx.getResponse();
    RequestDispatcher rd =
        request.getSession(true).getServletContext().getRequestDispatcher(url);
    if (rd == null) {
        ListTagUtil.write(ctx, "<!-- " + url + " not found -->");
    }
    else {
        try {
            BufferedResponseWrapper wrapper = new BufferedResponseWrapper(response);
            rd.include(request, wrapper);
            wrapper.flush();
            ListTagUtil.write(ctx, wrapper.getBufferedOutput());
        }
        catch (Exception e) {
            throw new JspException(e);
        }
    }
}
 

@Test
@SuppressWarnings("rawtypes")
public void requestContext() throws ServletException {
	PageContext pc = createPageContext();
	RequestContext rc = new RequestContext((HttpServletRequest) pc.getRequest(), pc.getServletContext());
	assertEquals("test message", rc.getMessage("test"));
	assertEquals("test message", rc.getMessage("test", (Object[]) null));
	assertEquals("test message", rc.getMessage("test", "default"));
	assertEquals("test message", rc.getMessage("test", (Object[]) null, "default"));
	assertEquals("test arg1 message arg2",
			rc.getMessage("testArgs", new String[] {"arg1", "arg2"}, "default"));
	assertEquals("test arg1 message arg2",
			rc.getMessage("testArgs", Arrays.asList(new String[] {"arg1", "arg2"}), "default"));
	assertEquals("default", rc.getMessage("testa", "default"));
	assertEquals("default", rc.getMessage("testa", (List) null, "default"));
	MessageSourceResolvable resolvable = new DefaultMessageSourceResolvable(new String[] {"test"});
	assertEquals("test message", rc.getMessage(resolvable));
}
 

/**
 *
 * Creates the Map that maps cookie name to the first matching
 * Cookie in request.getCookies().
 **/
public static Map createCookieMap (PageContext pContext)
{
  // Read all the cookies and construct the entire map
  HttpServletRequest request = (HttpServletRequest) pContext.getRequest ();
  Cookie [] cookies = request.getCookies ();
  Map ret = new HashMap ();
  for (int i = 0; cookies != null && i < cookies.length; i++) {
    Cookie cookie = cookies [i];
    if (cookie != null) {
      String name = cookie.getName ();
      if (!ret.containsKey (name)) {
        ret.put (name, cookie);
      }
    }
  }
  return ret;
}
 

/**
 * Initialize this context with the given page context,
 * using the given model attributes for Errors retrieval.
 * @param pageContext current JSP page context
 * @param model the model attributes for the current view
 * (can be {@code null}, using the request attributes for Errors retrieval)
 */
protected void initContext(PageContext pageContext, Map<String, Object> model) {
	if (!(pageContext.getRequest() instanceof HttpServletRequest)) {
		throw new IllegalArgumentException("RequestContext only supports HTTP requests");
	}
	this.pageContext = pageContext;
	initContext((HttpServletRequest) pageContext.getRequest(), (HttpServletResponse) pageContext.getResponse(),
			pageContext.getServletContext(), model);
}
 

/** Utility methods
 * taken from org.apache.taglibs.standard.tag.common.core.UrlSupport
 */
public static String resolveUrl(
        String url, String context, PageContext pageContext)
throws JspException {
    // don't touch absolute URLs
    if (isAbsoluteUrl(url))
        return url;
    
    // normalize relative URLs against a context root
    HttpServletRequest request =
        (HttpServletRequest) pageContext.getRequest();
    if (context == null) {
        if (url.startsWith("/"))
            return (request.getContextPath() + url);
        else
            return url;
    } else {
        if (!context.startsWith("/") || !url.startsWith("/")) {
            throw new JspTagException(
            "In URL tags, when the \"context\" attribute is specified, values of both \"context\" and \"url\" must start with \"/\".");
        }
        if (context.equals("/")) {
            // Don't produce string starting with '//', many
            // browsers interpret this as host name, not as
            // path on same host.
            return url;
        } else {
            return (context + url);
        }
    }
}
 

@Test
@SuppressWarnings("rawtypes")
public void requestContext() throws ServletException {
	PageContext pc = createPageContext();
	RequestContext rc = new RequestContext((HttpServletRequest) pc.getRequest());
	assertEquals("theme test message", rc.getThemeMessage("themetest"));
	assertEquals("theme test message", rc.getThemeMessage("themetest", (String[]) null));
	assertEquals("theme test message", rc.getThemeMessage("themetest", "default"));
	assertEquals("theme test message", rc.getThemeMessage("themetest", (Object[]) null, "default"));
	assertEquals("theme test message arg1",
			rc.getThemeMessage("themetestArgs", new String[] {"arg1"}));
	assertEquals("theme test message arg1",
			rc.getThemeMessage("themetestArgs", Arrays.asList(new String[] {"arg1"})));
	assertEquals("default", rc.getThemeMessage("themetesta", "default"));
	assertEquals("default", rc.getThemeMessage("themetesta", (List) null, "default"));
	MessageSourceResolvable resolvable = new DefaultMessageSourceResolvable(new String[] {"themetest"});
	assertEquals("theme test message", rc.getThemeMessage(resolvable));
}
 

/**
 * Initialize this context with the given page context,
 * using the given model attributes for Errors retrieval.
 * @param pageContext current JSP page context
 * @param model the model attributes for the current view
 * (can be {@code null}, using the request attributes for Errors retrieval)
 */
protected void initContext(PageContext pageContext, Map<String, Object> model) {
	if (!(pageContext.getRequest() instanceof HttpServletRequest)) {
		throw new IllegalArgumentException("RequestContext only supports HTTP requests");
	}
	this.pageContext = pageContext;
	initContext((HttpServletRequest) pageContext.getRequest(), (HttpServletResponse) pageContext.getResponse(),
			pageContext.getServletContext(), model);
}
 

/**
 *
 * Creates the Map that maps header name to an array of header
 * values.
 **/
public static Map createHeadersMap (PageContext pContext)
{
  final HttpServletRequest request =
    (HttpServletRequest) pContext.getRequest ();
  return new EnumeratedMap ()
    {
      public Enumeration enumerateKeys () 
      {
        return request.getHeaderNames ();
      }

      public Object getValue (Object pKey) 
      {
        if (pKey instanceof String) {
          // Drain the header enumeration
          List l = new ArrayList ();
          Enumeration e = request.getHeaders ((String) pKey);
          if (e != null) {
            while (e.hasMoreElements ()) {
              l.add (e.nextElement ());
            }
          }
          String [] ret = (String []) l.toArray (new String [l.size ()]);
          return ret;
        }
        else {
          return null;
        }
      }

      public boolean isMutable ()
      {
        return false;
      }
    };
}
 

/**
     * <p>
     * {@code Spring MVC} のパス修飾機構によって指定されたURLパスを修飾します。<br/>
     * </p>
     * @param action パス
     * @param requestContext {@link RequestContext} インスタンス
     * @param pageContext {@link PageContext} インスタンス
     * @return 修飾されたパス
     */
    public static String processAction(String action, RequestContext requestContext, PageContext pageContext) {
        RequestDataValueProcessor processor = requestContext.getRequestDataValueProcessor();
        ServletRequest request = pageContext.getRequest();
        if ((processor != null) && (request instanceof HttpServletRequest)) {
//            return processor.processAction((HttpServletRequest) request, action);
            return processor.processAction((HttpServletRequest) request, action, ((HttpServletRequest) request).getMethod());
        }
        return action;
    }
 

/**
 *
 * Creates the Map that maps parameter name to an array of parameter
 * values.
 **/
public static Map createParamsMap (PageContext pContext)
{
  final HttpServletRequest request =
    (HttpServletRequest) pContext.getRequest ();
  return new EnumeratedMap ()
    {
      public Enumeration enumerateKeys () 
      {
        return request.getParameterNames ();
      }

      public Object getValue (Object pKey) 
      {
        if (pKey instanceof String) {
          return request.getParameterValues ((String) pKey);
        }
        else {
          return null;
        }
      }

      public boolean isMutable ()
      {
        return false;
      }
    };
}
 

/**
 *
 * Creates the Map that maps parameter name to single parameter
 * value.
 **/
public static Map createParamMap (PageContext pContext)
{
  final HttpServletRequest request =
    (HttpServletRequest) pContext.getRequest ();
  return new EnumeratedMap ()
    {
      public Enumeration enumerateKeys () 
      {
        return request.getParameterNames ();
      }

      public Object getValue (Object pKey) 
      {
        if (pKey instanceof String) {
          return request.getParameter ((String) pKey);
        }
        else {
          return null;
        }
      }

      public boolean isMutable ()
      {
        return false;
      }
    };
}
 

public JspToolContext(VelocityEngine velocity,
                      PageContext pageContext)
{
    super(velocity,
          (HttpServletRequest)pageContext.getRequest(),
          (HttpServletResponse)pageContext.getResponse(),
          pageContext.getServletContext());

    this.pageContext = pageContext;
}
 

/** Utility methods
 * taken from org.apache.taglibs.standard.tag.common.core.UrlSupport
 */
public static String resolveUrl(
        String url, String context, PageContext pageContext)
throws JspException {
    // don't touch absolute URLs
    if (isAbsoluteUrl(url))
        return url;
    
    // normalize relative URLs against a context root
    HttpServletRequest request =
        (HttpServletRequest) pageContext.getRequest();
    if (context == null) {
        if (url.startsWith("/"))
            return (request.getContextPath() + url);
        else
            return url;
    } else {
        if (!context.startsWith("/") || !url.startsWith("/")) {
            throw new JspTagException(
            "In URL tags, when the \"context\" attribute is specified, values of both \"context\" and \"url\" must start with \"/\".");
        }
        if (context.equals("/")) {
            // Don't produce string starting with '//', many
            // browsers interpret this as host name, not as
            // path on same host.
            return url;
        } else {
            return (context + url);
        }
    }
}
 

public static boolean isComponentReadOnly(PageContext pageContext,
                                          String compReadOnlyAttr) {
  ServletRequest request = pageContext.getRequest();
  if (compReadOnlyAttr == null)
    return isFormReadOnly(request);
  else if (compReadOnlyAttr.equals("false"))
    return false;
  else if (isFormReadOnly(request))
    return true;
  else
    return InteractionELSupport.getBooleanValue(compReadOnlyAttr, false, 
                                                pageContext);
}
 

/**
    * Renders the filter UI
    * @param pageContext caller's page context
    * @param filter ListFilter instance
    * @param uniqueName name of the list
    * @param width width of the list
    * @param columnCount list's column count
    * @throws JspException if something bad happens writing to the page
    */
   public static void renderFilterUI(PageContext pageContext, ListFilter filter,
           String uniqueName, String width, int columnCount) throws JspException {
       LocalizationService ls = LocalizationService.getInstance();
       HttpServletRequest request = (HttpServletRequest) pageContext
               .getRequest();
       String filterByKey = makeFilterByLabel(uniqueName);
       String filterBy = request.getParameter(filterByKey);
       String filterValueKey = makeFilterValueByLabel(uniqueName);
       String filterName = makeFilterNameByLabel(uniqueName);
       String filterValue =  ListTagHelper.getFilterValue(pageContext.getRequest(),
               uniqueName);


       //We set this so we know next time around what the old filter value was
       ListTagUtil.write(pageContext, String.format(HIDDEN_TEXT,
                       makeOldFilterValueByLabel(uniqueName),
                       StringEscapeUtils.escapeHtml(filterValue)));


       List fields = filter.getFieldNames();
       if (fields == null || fields.size() == 0) {
           throw new JspException(
                   "ListFilter.getFieldNames() returned no field names");
       }
       else if (fields.size() == 1) {
           ListTagUtil.write(pageContext, "<input type=\"hidden\" name=\"");
           ListTagUtil.write(pageContext, filterByKey);
           ListTagUtil.write(pageContext, "\" value=\"");
           ListTagUtil.write(pageContext, fields.get(0).toString());
           ListTagUtil.write(pageContext, "\" />");
       }
       else {
           ListTagUtil.write(pageContext, ls.getMessage("message.filterby.multiple"));
           ListTagUtil.write(pageContext, "<select name=\"");
           ListTagUtil.write(pageContext, filterByKey);
           ListTagUtil.write(pageContext, "\">");
           for (Iterator iter = fields.iterator(); iter.hasNext();) {
               String field = (String) iter.next();
               ListTagUtil.write(pageContext, "<option value=\"");
               ListTagUtil.write(pageContext, field);
               ListTagUtil.write(pageContext, "\" ");
               if (field.equals(filterBy)) {
                   ListTagUtil.write(pageContext, "selected");
               }
               ListTagUtil.write(pageContext, ">");
               ListTagUtil.write(pageContext, field);
               ListTagUtil.write(pageContext, "</option>");
           }
           ListTagUtil.write(pageContext, "</select>");
       }

       filterValue = StringUtil.nullOrValue(filterValue);
       StringBuilder sb = new StringBuilder();

       // create a new row
       sb.append("<div class=\"input-group input-group-sm\">");

       String placeHolder = StringUtils.defaultString(ls.getMessage("message.filterby",
               fields.get(0).toString()));
       sb.append(String.format("<input autofocus=\"autofocus\" type=\"text\" " +
               " name=\"%s\" value=\"%s\" class=\"form-control\" placeholder=\"%s\"/>",
                               filterValueKey,
                               (filterValue != null ?
                                StringEscapeUtils.escapeHtml(filterValue) :
                                ""),
                                StringEscapeUtils.escapeHtml(placeHolder)
                                ));
       sb.append("<span class=\"input-group-btn\">");
       sb.append(String.format("<button value=\"%s\" type=\"submit\" name=\"%s\" " +
" class=\"btn btn-default spacewalk-button-filter\"><i class=\"fa fa-eye\"></i>",
                               ls.getMessage(RequestContext.FILTER_KEY),
                               filterName));
       sb.append("</button>");
       sb.append("</span>");

       sb.append("</div>");

       ListTagUtil.write(pageContext, sb.toString());

   }
 

/**
 * Create a new JspAwareRequestContext for the given page context,
 * using the given model attributes for Errors retrieval.
 * @param pageContext current JSP page context
 * @param model the model attributes for the current view
 * (can be {@code null}, using the request attributes for Errors retrieval)
 */
public JspAwareRequestContext(PageContext pageContext, @Nullable Map<String, Object> model) {
	super((HttpServletRequest) pageContext.getRequest(), (HttpServletResponse) pageContext.getResponse(),
			pageContext.getServletContext(), model);
	this.pageContext = pageContext;
}