简单扩展让beetl HTML标签支持父子嵌套_html/css_WEB-ITnose

<#table data ="${userList}"><#tr class="3c" name="name"> 名称 </#tr></#table>

public class HTMLNestTagSupportWrapper extends HTMLTagSupportWrapper{public void render(){....}}

public class TagNestContext {private  Tag tag = null;private TagNestContext parent = null;private List<TagNestContext> children = null;public  Tag getTag() {    return tag;}public void setTag(Tag para) {    this.tag = para;}public TagNestContext getParent() {    return parent;}public void setParent(TagNestContext parent) {    this.parent = parent;}public List<TagNestContext> getChildren() {    if(children==null) children = new ArrayList<TagNestContext>();    return children;}public void setChildren(List<TagNestContext> children) {    this.children = children;}}

public void render(){    HttpServletRequest request = (HttpServletRequest)this.ctx.getGlobal("request");    TagNestContext tnc = (TagNestContext)request.getAttribute("tagContext");    if(tnc==null){        tnc = new TagNestContext();        tnc.setTag(this);        request.setAttribute("tagContext", tnc);        super.render();        request.removeAttribute("tagContext");    }else{        TagNestContext child = new TagNestContext();        child.setParent(tnc);        child.setTag(this);        tnc.getChildren().add(child);        request.setAttribute("tagContext", child);        super.render();        //重新设置        request.setAttribute("tagContext", child.getParent());    }}public String getTagName(){    return (String)this.args[0];}public Object get(String attr){    Map map =  (Map)this.args[1];    return map.get(attr);}

<tr class="${class}">${tagBody}</tr>

<table>${tagBody}<% for(var item in data){%><tr><%var tag = getTagContext();var children = tag.children;for(var tdTagCtx in children){    print("<td>");    var tdTag = tdTagCtx.tag;    var name = tdTag.tagName;    var value = item[name];    print(value);    println("</td>");}%></tr><%} %></table>