SpringBoot獲取Freemarker模板引擎，生成HTML代碼

今天用Ajax異步添加評論，加載Freemarker模板引擎，生成模板模塊javascript

1.新建Freemarker模板

<li id="${comment.oId}">
    <div>
        <div class="avatar tooltipped tooltipped-n" aria-label="${comment.commentName}" style="background-image: url(${comment.commentThumbnailURL})"></div>
        <main>
            <div class="fn-clear">
                <#if "http://" == comment.commentURL> ${comment.commentName} <#else>
                <a class="user-name" href="${comment.commentURL}" target="_blank">${comment.commentName}</a>
                </#if>
                <#if comment.isReply> @<a class="user-name" href="/${article.articlePermalink}#${comment.commentOriginalCommentId}" onmouseover="page.showComment(this, '${comment.commentOriginalCommentId}', 23);" onmouseout="page.hideComment('${comment.commentOriginalCommentId}')"
                >${comment.commentOriginalCommentName}</a>
                </#if>
                <time class="ft-gray">${comment.commentDate?string("yyyy-MM-dd HH:mm")}</time>

                <#if article.articleCommentable==1>
                    <a class="reply-btn" href="javascript:replyTo('${comment.oId}')">${replyLabel}</a>
                </#if>
            </div>
            <div class="content-reset"> ${comment.commentContent} </div>
        </main>
    </div>
</li>

2.新建FreemarkerUtils工具類

package com.fdzang.mblog.utils; import freemarker.template.Configuration; import freemarker.template.Template; import freemarker.template.TemplateException; import freemarker.template.TemplateExceptionHandler; import java.io.File; import java.io.IOException; import java.io.StringWriter; import java.util.Map; public class FreemarkerUtils { public static String getTemplate(String template, Map<String,Object> map) throws IOException, TemplateException { Configuration cfg = new Configuration(Configuration.VERSION_2_3_28); String templatePath = FreemarkerUtils.class.getResource("/").getPath()+"/templates"; cfg.setDirectoryForTemplateLoading(new File(templatePath)); cfg.setDefaultEncoding("UTF-8"); cfg.setTemplateExceptionHandler(TemplateExceptionHandler.RETHROW_HANDLER); cfg.setLogTemplateExceptions(false); cfg.setWrapUncheckedExceptions(true); Template temp = cfg.getTemplate(template); StringWriter stringWriter = new StringWriter(); temp.process(map, stringWriter); return stringWriter.toString(); } }

template爲模板的名稱，Map爲須要插入的參數java

關於加載模板位置的方法，借鑑於異步

https://blog.csdn.net/gtlishujie/article/details/52300381ide

我就很少加累述了，關鍵在於獲取文件路徑，文件路徑不對的話，能夠試着輸出而後調試，我的推薦文件加載這個方法工具

3.Controller層的方法

Map<String,Object> map=new HashMap<>(); map.put("article",article); map.put("comment",comment); map.put("replyLabel","回覆"); String cmtTpl= FreemarkerUtils.getTemplate("common-comment.ftl",map); result.setCmtTpl(cmtTpl);

定義好Map參數，指定加載的模板引擎，就能夠獲得解析後的HTML了this