在带有嵌套 XML 模板的 Spring Boot 中使用 FreeMarker 模板

Question

所以我有以下 FreeMarker 模板：<?xml version="1.0" encoding="ISO-8859-1"?><master>    <header>        <version>${version}</version>        <created>${created}</created>        <creator>${creator}</creator>        <draw>${draw}</draw>        <game>${game}</game>        <type>${type}</type>        <sender>${sender}</sender>        <recipient>${recipient}</recipient>        <revision>${revision}</revision>    </header>    <data>        <stake>        ${stake}        </stake>        <checksum_combifile>        ${checksumFile}        </checksum_combifile>    </data></master>一切都很好，一切都很甜蜜，但现在我想做以下事情，避免重复，因为我有许多具有相同标题结构的模板，将属于标题的变量移动到名为TemplateHeader的新类，如下所示：public class TemplateHeader {    /* Header */    private String version;    private String created;    private String creator;    private String draw;    private String game;    private String type;    private String sender;    private String recipient;    private String revision;    public TemplateHeader() {        super();    }    public TemplateHeader(String version, String created, String creator, String draw, String game, String type, String sender, String recipient, String revision) {        super();        this.version = version;        this.created = created;        this.creator = creator;        this.draw = draw;        this.game = game;        this.type = type;        this.sender = sender;        this.recipient = recipient;        this.revision = revision;    }    public String getVersion() {        return version;    }    public void setVersion(String version) {        this.version = version;    }    public String getCreated() {        return created;    }    public void setCreated(String created) {        this.created = created;    }    public String getCreator() {        return creator;    }    public void setCreator(String creator) {        this.creator = creator;    }但是我不知道该怎么做，因为我从 FreeTemplate 收到错误，并且在网上找不到任何教程....