Liferay创建新用户页面中的随机文本验证详细分析

Liferay 6.1的创建新用户页面如图：

这个页面的代码在/html/portlet/login/create_account.jsp中：

...
<portlet:actionURL var="createAccoutURL">
    <portlet:param name="saveLastPath" value="0" />
    <portlet:param name="struts_action" value="/login/create_account" />
</portlet:actionURL> 

<aui:form action="<%= createAccoutURL %>" method="post" name="fm">
    <aui:input name="<%= Constants.CMD %>" type="hidden" value="<%= Constants.ADD %>" />
    <aui:input name="redirect" type="hidden" value="<%= redirect %>" />
    <aui:input name="openId" type="hidden" value="<%= openId %>" /> 

.. 

        <%
        UserPasswordException upe = (UserPasswordException)errorException;
        %> 

        <c:if test="<%= upe.getType() == UserPasswordException.PASSWORD_CONTAINS_TRIVIAL_WORDS %>">
            <liferay-ui:message key="that-password-uses-common-words-please-enter-in-a-password-that-is-harder-to-guess-i-e-contains-a-mix-of-numbers-and-letters" />
        </c:if> 

        <c:if test="<%= upe.getType() == UserPasswordException.PASSWORD_INVALID %>">
            <liferay-ui:message key="that-password-is-invalid-please-enter-in-a-different-password" />
        </c:if> 

        <c:if test="<%= upe.getType() == UserPasswordException.PASSWORD_LENGTH %>">
            <%= LanguageUtil.format(pageContext, "that-password-is-too-short-or-too-long-please-make-sure-your-password-is-between-x-and-512-characters", String.valueOf(passwordPolicy.getMinLength()), false) %>
        </c:if> 

        <c:if test="<%= upe.getType() == UserPasswordException.PASSWORD_TOO_TRIVIAL %>">
            <liferay-ui:message key="that-password-is-too-trivial" />
        </c:if> 

        <c:if test="<%= upe.getType() == UserPasswordException.PASSWORDS_DO_NOT_MATCH %>">
            <liferay-ui:message key="the-passwords-you-entered-do-not-match-each-other-please-re-enter-your-password" />
        </c:if>
    </liferay-ui:error> 

    <liferay-ui:error exception="<%= UserScreenNameException.class %>" message="please-enter-a-valid-screen-name" />
    <liferay-ui:error exception="<%= WebsiteURLException.class %>" message="please-enter-a-valid-url" /> 

    <c:if test='<%= SessionMessages.contains(request, "missingOpenIdUserInformation") %>'>
        <div class="portlet-msg-info">
            <liferay-ui:message key="you-have-successfully-authenticated-please-provide-the-following-required-information-to-access-the-portal" />
        </div>
    </c:if> 

    <aui:model-context model="<%= Contact.class %>" /> 

    <aui:fieldset>
        <aui:column>
            <aui:input model="<%= User.class %>" name="firstName" /> 

            <aui:input model="<%= User.class %>" name="middleName" /> 

            <aui:input model="<%= User.class %>" name="lastName">
                <c:if test="<%= PrefsPropsUtil.getBoolean(company.getCompanyId(), PropsKeys.USERS_LAST_NAME_REQUIRED, PropsValues.USERS_LAST_NAME_REQUIRED) %>">
                    <aui:validator name="required" />
                </c:if>
            </aui:input> 

            <c:if test="<%= !PrefsPropsUtil.getBoolean(company.getCompanyId(), PropsKeys.USERS_SCREEN_NAME_ALWAYS_AUTOGENERATE) %>">
                <aui:input model="<%= User.class %>" name="screenName" />
            </c:if> 

            <aui:input model="<%= User.class %>" name="emailAddress">
                <c:if test="<%= PrefsPropsUtil.getBoolean(company.getCompanyId(), PropsKeys.USERS_EMAIL_ADDRESS_REQUIRED, PropsValues.USERS_EMAIL_ADDRESS_REQUIRED) %>">
                    <aui:validator name="required" />
                </c:if>
            </aui:input>
        </aui:column> 

        <aui:column>
            <c:if test="<%= PropsValues.LOGIN_CREATE_ACCOUNT_ALLOW_CUSTOM_PASSWORD %>">
                <aui:input label="password" name="password1" size="30" type="password" value="" /> 

                <aui:input label="enter-again" name="password2" size="30" type="password" value="">
                    <aui:validator name="equalTo">
                        '#<portlet:namespace />password1'
                    </aui:validator>
                </aui:input>
            </c:if> 

            <c:choose>
                <c:when test="<%= PrefsPropsUtil.getBoolean(company.getCompanyId(), PropsKeys.FIELD_ENABLE_COM_LIFERAY_PORTAL_MODEL_CONTACT_BIRTHDAY) %>">
                    <aui:input name="birthday" value="<%= birthday %>" />
                </c:when>
                <c:otherwise>
                    <aui:input name="birthdayMonth" type="hidden" value="<%= Calendar.JANUARY %>" />
                    <aui:input name="birthdayDay" type="hidden" value="1" />
                    <aui:input name="birthdayYear" type="hidden" value="1970" />
                </c:otherwise>
            </c:choose> 

            <c:if test="<%= PrefsPropsUtil.getBoolean(company.getCompanyId(), PropsKeys.FIELD_ENABLE_COM_LIFERAY_PORTAL_MODEL_CONTACT_MALE) %>">
                <aui:select label="gender" name="male">
                    <aui:option label="male" value="1" />
                    <aui:option label="female" selected="<%= !male %>" value="0" />
                </aui:select>
            </c:if> 

            <c:if test="<%= PropsValues.CAPTCHA_CHECK_PORTAL_CREATE_ACCOUNT %>">
                <portlet:actionURL windowState="<%= LiferayWindowState.EXCLUSIVE.toString() %>" var="captchaURL">
                    <portlet:param name="struts_action" value="/login/captcha" />
                </portlet:actionURL> 

                <liferay-ui:captcha url="<%= captchaURL %>" />
            </c:if>
        </aui:column>
    </aui:fieldset> 

    <aui:button-row>
        <aui:button type="submit" />
    </aui:button-row>
</aui:form> 

<liferay-util:include page="/html/portlet/login/navigation.jsp" /> 

<c:if test="<%= windowState.equals(WindowState.MAXIMIZED) %>">
    <aui:script>
        Liferay.Util.focusFormField(document.<portlet:namespace />fm.<portlet:namespace />firstName);
    </aui:script>
</c:if>

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