Examples of org.springframework.web.servlet.support.RequestDataValueProcessor

Package org.springframework.web.servlet.support

Examples of org.springframework.web.servlet.support.RequestDataValueProcessor

org.springframework.web.servlet.support.RequestDataValueProcessor
A contract for inspecting and potentially modifying request data values such as URL query parameters or form field values before they are rendered by a view or before a redirect.
Implementations may use this contract for example as part of a solution to provide data integrity, confidentiality, protection against cross-site request forgery (CSRF), and others or for other tasks such as automatically adding a hidden field to all forms and URLs.
View technologies that support this contract can obtain an instance to delegate to via {@link RequestContext#getRequestDataValueProcessor()}. @author Rossen Stoyanchev @since 3.1

   * Closes the '{@code form}' block tag and removes the form object name
   * from the {@link javax.servlet.jsp.PageContext}.
   */
  @Override
  public int doEndTag() throws JspException {
    RequestDataValueProcessor processor = getRequestContext().getRequestDataValueProcessor();
    ServletRequest request = this.pageContext.getRequest();
    if ((processor != null) && (request instanceof HttpServletRequest)) {
      writeHiddenFields(processor.getExtraHiddenFields((HttpServletRequest) request));
    }
    this.tagWriter.endTag();
    return EVAL_PAGE;
  }

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    StaticWebApplicationContext wac = new StaticWebApplicationContext();
    wac.registerSingleton("requestDataValueProcessor", RequestDataValueProcessorWrapper.class);
    wac.setServletContext(new MockServletContext());
    wac.refresh();


    RequestDataValueProcessor mockProcessor = mock(RequestDataValueProcessor.class);
    wac.getBean(RequestDataValueProcessorWrapper.class).setRequestDataValueProcessor(mockProcessor);


    RedirectView rv = new RedirectView();
    rv.setApplicationContext(wac);  // Init RedirectView with WebAppCxt
    rv.setUrl("/path");


    MockHttpServletRequest request = createRequest();
    request.setAttribute(DispatcherServlet.WEB_APPLICATION_CONTEXT_ATTRIBUTE, wac);
    HttpServletResponse response = new MockHttpServletResponse();


    given(mockProcessor.processUrl(request, "/path")).willReturn("/path?key=123");


    rv.render(new ModelMap(), request, response);


    verify(mockProcessor).processUrl(request, "/path");
  }

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    MockServletContext servletContext = new MockServletContext();
    ContextLoader contextLoader = new ContextLoader(wac);
    contextLoader.initWebApplicationContext(servletContext);


    try {
      RequestDataValueProcessor mockProcessor = mock(RequestDataValueProcessor.class);
      wac.getBean(RequestDataValueProcessorWrapper.class).setRequestDataValueProcessor(mockProcessor);


      RedirectView rv = new RedirectView();
      rv.setUrl("/path");


      MockHttpServletRequest request = createRequest();
      HttpServletResponse response = new MockHttpServletResponse();


      given(mockProcessor.processUrl(request, "/path")).willReturn("/path?key=123");


      rv.render(new ModelMap(), request, response);


      verify(mockProcessor).processUrl(request, "/path");
    }

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  protected final RequestContext getRequestContext() {
    return (RequestContext) getPageContext().getAttribute(RequestContextAwareTag.REQUEST_CONTEXT_PAGE_ATTRIBUTE);
  }


  protected RequestDataValueProcessor getMockRequestDataValueProcessor() {
    RequestDataValueProcessor mockProcessor = mock(RequestDataValueProcessor.class);
    ServletRequest request = getPageContext().getRequest();
    StaticWebApplicationContext wac = (StaticWebApplicationContext) RequestContextUtils.getWebApplicationContext(request);
    wac.getBean(RequestDataValueProcessorWrapper.class).setRequestDataValueProcessor(mockProcessor);
    return mockProcessor;
  }

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    assertNull(getPageContext().getAttribute(FormTag.MODEL_ATTRIBUTE_VARIABLE_NAME, PageContext.REQUEST_SCOPE));
  }


  public void testRequestDataValueProcessorHooks() throws Exception {
    String action = "/my/form?foo=bar";
    RequestDataValueProcessor processor = getMockRequestDataValueProcessor();
    given(processor.processAction(this.request, action, "post")).willReturn(action);
    given(processor.getExtraHiddenFields(this.request)).willReturn(Collections.singletonMap("key", "value"));


    this.tag.doStartTag();
    this.tag.doEndTag();
    this.tag.doFinally();

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    HdivRequestDataValueProcessor processor = this.context.getBean(HdivRequestDataValueProcessor.class);
    assertNotNull(processor);


    // Spring security 'CsrfRequestDataValueProcessor' as inner processor.
    RequestDataValueProcessor inner = processor.getInnerRequestDataValueProcessor();
    assertNotNull(inner);


    assertEquals(CsrfRequestDataValueProcessor.class, inner.getClass());
  }

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