freemarker处理嵌套属性是否为空的判断
ftl page code:
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<#escape x as x?if_exists?html>
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用户名:${user?if_exists.userName}<br>
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姓名:${'name'}<br>
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<#escape xx as user?if_exists.userInfo?if_exists[xx]>
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<#noescape>
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性别:<#if user?if_exists.userInfo?if_exists.gendar?if_exists.i18n?exists>
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${action.getText(user.userInfo.gendar.i18n)}
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</#if>
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</#noescape>
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身份证:${'idCardNo'}<br>
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联系电话:${'telephone'}<br>
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手机:${'mobile'}<br>
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邮箱:${'email'}<br>
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地址:${'address'}<br>
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个人简介:${'resume'}<br>
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</#escape>
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</#escape>
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class User
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{
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private String name;
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private String userName;
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private UserInfo userInfo;
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//getter and setter method
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//![](https://www.cnblogs.com/Images/dot.gif)
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}
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class UserInfo
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{
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private String idCardNo;
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private String telephone;
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private String mobile;
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private String email;
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private String address;
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private String resume;
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private Sex gendar;
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//getter and setter method
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//![](https://www.cnblogs.com/Images/dot.gif)
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}
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public enum Sex implements EnumI18n{
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MALE(0, "el.enum.human.status.male"),
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FEMALE(1, "el.enum.human.status.female"),
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private String i18n;
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Sex( String i18n) {
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this.i18n = i18n;
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}
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public String getI18n() {
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return this.i18n;
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}
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}
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