静态页面缓存（thymeleaf模板writer）


//前端html
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link rel="stylesheet" href="../static-recourse/css/home.css" />
    <link rel="stylesheet" href="../static-recourse/layui/layui.css" />
    <link rel="stylesheet" href="../static-recourse/css/guide.css"/>
    <script src="../static-recourse/js/jquery.min.js"></script>
    <title>网站首页</title>
    <style>
        .query .notFount {
            display: none;
        }

        .unitList p a {
            margin-bottom: -4px;
        }

        .unitList ul li {
            margin-left: 32px;
            margin-right: 4px;
        }

        .unitList li p {
            margin: 12px auto;
        }

        .unitInform .unitInf,
        .unitInform .printInf {
            margin-left: 50px;
        }

        .unitInform .unitInf p {
            margin-top: 18px;
            font-size: 12px;
        }

        .unitInform h3 {
            margin-top: 30px;
        }

        .unitInform .printList p {
            margin-top: 20px;
            font-size: 12px;
        }

        .unitInform input[type="button"] {
            margin-bottom: -6px;
        }

        .unitInform {
            display: none;
        }
        .rules{
             49%;
            float: left;
        }
        .standar{
             49%;
            float: left;
            margin-left: 18px;
        }
        .leftspan{
             49%;
            float: left;
        }
    </style>
</head>

<body>
<div class="content">
    <div class="content layui-row layui-col-space9">
        <div class="content_w serviceTable type_1_content rules">
            <span class="title">新闻资讯</span>
            <table class="layui-table service">
                <colgroup>
                    <col width="250">
                    <col width="50">
                    <col>
                </colgroup>
                <!--<thead>
                <tr>
                    <th>标题</th>
                    <th>时间</th>
                </tr>
                </thead>-->
                <tbody id="guidance-list" class="guidance-list">
                <tr th:each="var,varStat : ${xwzxList}" th:if="${varStat.index} lt 5">
                    <td class="titleTr">
                        <span th:if="${var.isTop}"><img src="../static-recourse/img/pin_1.gif" style="padding-right: 5px;"/></span>
                        <span th:if="${not var.isTop}"><img src="../static-recourse/img/folder_new.gif" style="padding-right: 5px;"/></span>
                        <a th:utext="${var.title}" th:attr="data-id=${var.id},title=${var.title}">关于推进全国统一 “多证合一”改革的意见</a>
                    </td>
                    <td class="checkTr" th:text="${#dates.format(var.updateTime,'yyyy-MM-dd')}">2019-01-01</td>
                </tr>
                <tr th:each="i:${#numbers.sequence(1,5-xwzxList.size())}" th:if="${xwzxList.size()} lt 5">
                    <td class="titleTr"><a>&nbsp;</a></td>
                    <td class="checkTr">&nbsp;</td>
                </tr>
                <tr>
                    <td class="titleTr"><a href="new_guide.html?flag=0" target="_parent">更多>></a></td>
                    <td class="checkTr">&nbsp;</td>
                </tr>
                </tbody>
            </table>
        </div>


        <div class="content_w serviceTable type_2_content standar">
            <span class="title">政策法规</span>
            <table class="layui-table service">
                <colgroup>
                    <col width="250">
                    <col width="50">
                    <col>
                </colgroup>
                <!--<thead>
                <tr>
                    <th>标题</th>
                    <th>时间</th>
                </tr>
                </thead>-->
                <tbody id="guidance-list" class="guidance-list">
                <tr th:each="var,varStat : ${zcfgList}" th:if="${varStat.index} lt 5">
                    <td class="titleTr">
                        <span th:if="${var.isTop}"><img src="../static-recourse/img/pin_1.gif" style="padding-right: 5px;"/></span>
                        <span th:if="${not var.isTop}"><img src="../static-recourse/img/folder_new.gif" style="padding-right: 5px;"/></span>
                        <a th:utext="${var.title}" th:attr="data-id=${var.id},title=${var.title}">关于推进全国统一 “多证合一”改革的意见</a>
                    </td>
                    <td class="checkTr" th:text="${#dates.format(var.updateTime,'yyyy-MM-dd')}">2019-01-01</td>
                </tr>
                <tr th:each="i:${#numbers.sequence(1,5-zcfgList.size())}" th:if="${zcfgList.size()} lt 5">
                    <td class="titleTr"><a>&nbsp;</a></td>
                    <td class="checkTr">&nbsp;</td>
                </tr>
                <tr>
                    <td class="titleTr"><a href="new_guide.html?flag=1" target="_parent">更多>></a></td>
                    <td class="checkTr">&nbsp;</td>
                </tr>
                </tbody>
            </table>
        </div>

        <div class="content_w serviceTable type_2_content leftspan">
            <span class="title">行业标准</span>
            <table class="layui-table service">
                <colgroup>
                    <col width="250">
                    <col width="50">
                    <col>
                </colgroup>
                <!--<thead>
                <tr>
                    <th>标题</th>
                    <th>时间</th>
                </tr>
                </thead>-->
                <tbody id="guidance-list" class="guidance-list">
                <tr th:each="var,varStat : ${hybzList}" th:if="${varStat.index} lt 5">
                    <td class="titleTr">
                        <span th:if="${var.isTop}"><img src="../static-recourse/img/pin_1.gif" style="padding-right: 5px;"/></span>
                        <span th:if="${not var.isTop}"><img src="../static-recourse/img/folder_new.gif" style="padding-right: 5px;"/></span>
                        <a th:utext="${var.title}" th:attr="data-id=${var.id},title=${var.title}">关于推进全国统一 “多证合一”改革的意见</a>
                    </td>
                    <td class="checkTr" th:text="${#dates.format(var.updateTime,'yyyy-MM-dd')}">2019-01-01</td>
                </tr>
                <tr th:each="i:${#numbers.sequence(1,5-hybzList.size())}" th:if="${hybzList.size()} lt 5">
                    <td class="titleTr"><a>&nbsp;</a></td>
                    <td class="checkTr">&nbsp;</td>
                </tr>
                <tr>
                    <td class="titleTr"><a href="new_guide.html?flag=2" target="_parent">更多>></a></td>
                    <td class="checkTr">&nbsp;</td>
                </tr>
                </tbody>
            </table>
        </div>


        <div class="content_w serviceTable type_2_content standar">
            <span class="title">知识园地</span>
            <table class="layui-table service">
                <colgroup>
                    <col width="250">
                    <col width="50">
                    <col>
                </colgroup>
                <!--<thead>
                <tr>
                    <th>标题</th>
                    <th>时间</th>
                </tr>
                </thead>-->
                <tbody id="guidance-list" class="guidance-list">
                <tr th:each="var,varStat : ${zsydList}" th:if="${varStat.index} lt 5">
                    <td class="titleTr">
                        <span th:if="${var.isTop}"><img src="../static-recourse/img/pin_1.gif" style="padding-right: 5px;"/></span>
                        <span th:if="${not var.isTop}"><img src="../static-recourse/img/folder_new.gif" style="padding-right: 5px;"/></span>
                        <a th:utext="${var.title}" th:attr="data-id=${var.id},title=${var.title}">关于推进全国统一 “多证合一”改革的意见</a>
                    </td>
                    <td class="checkTr" th:text="${#dates.format(var.updateTime,'yyyy-MM-dd')}">2019-01-01</td>
                </tr>
                <tr th:each="i:${#numbers.sequence(1,5-zsydList.size())}" th:if="${zsydList.size()} lt 5">
                    <td class="titleTr"><a>&nbsp;</a></td>
                    <td class="checkTr">&nbsp;</td>
                </tr>
                <tr>
                    <td class="titleTr"><a href="new_guide.html?flag=3" target="_parent">更多>></a></td>
                    <td class="checkTr">&nbsp;</td>
                </tr>
                </tbody>
            </table>
        </div>
    </div>


</div>
</body>
<script th:inline="javascript">
　　 // 后台数据传输到js变量中
　　 var down_url = [[${downUrl}]];
　　 var arry = [];
　　 arry = [[${FileList}]];
    // 查看每条记录
    $(".guidance-list").on('click', 'a', function () {
        var id = $(this).attr("data-id");
        if(id){
            window.open('details/'+id+'.html','_blank');// 详情跳转
        }
    })
</script>
</html>

//END-前端html

//后端写操作
package com.dhht.service;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;

import javax.annotation.Resource;
import java.io.File;
import java.io.PrintWriter;
import java.util.Map;

/**
 * @Author: sh
 * @Description: PageCacheService
 * @Date: 14:25 2019/9/24
 */
@Slf4j
@Service
public class PageCacheService {

static String CACHE_FILE_SUFFIX = ".html";

    @Value("${regulation_path}")
String REGULATION_PATH;// 缓存页面磁盘路径

@Value("${regulation_temp_source}")
String REGULATION_TEMP_SOURCE;

    @Resource
private TemplateEngine templateEngine;

    /**
     * 模板数据填充
     *
     * @param valsMap
* @param templateId
*/
public void setValToTemplat(Map<String, Object> valsMap, String templateId) {
setVals(valsMap,templateId,templateId,REGULATION_PATH);
    }

/**
     * 数据填充
     *
     * @param val          填充值
     * @param tempId       模板id
     * @param regulationId 资讯id
     * @param tarDir       本地磁盘目录
     */
public void setVals(Map<String, Object> val, String tempId, String regulationId, String tarDir) {
PrintWriter writer = null;
        try {
Context context = new Context();
            context.setVariables(val);
            File dirPath = new File(tarDir);
            if (!dirPath.exists()) {
dirPath.mkdirs();
            }
File uploadFile = new File(tarDir, regulationId + CACHE_FILE_SUFFIX);// ResourceUtils.getFile("classpath:templates/" + templateId + ".html");
if (uploadFile.exists()) {
uploadFile.delete();
            }
writer = new PrintWriter(uploadFile, "UTF-8");
            // 生成html，第一个参数是thymeleaf页面下的原型名称
templateEngine.process(tempId, context, writer);
        } catch (Exception e) {
            log.error(e.getMessage());
        } finally {
if(null!=writer){
writer.close();
            }
        }
    }
}
package com.dhht.service;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.thymeleaf.TemplateEngine;
import org.thymeleaf.context.Context;

import javax.annotation.Resource;
import java.io.File;
import java.io.PrintWriter;
import java.util.Map;

/**
 * @Author: sh
 * @Description: PageCacheService
 * @Date: 14:25 2019/9/24
 */
@Slf4j
@Service
public class PageCacheService {

static String CACHE_FILE_SUFFIX = ".html";

    @Value("${regulation_path}")
String REGULATION_PATH;// 缓存页面磁盘路径

@Value("${regulation_temp_source}")
String REGULATION_TEMP_SOURCE;

    @Resource
private TemplateEngine templateEngine;

    /**
     * 模板数据填充
     *
     * @param valsMap
* @param templateId
*/
public void setValToTemplat(Map<String, Object> valsMap, String templateId) {
setVals(valsMap,templateId,templateId,REGULATION_PATH);
    }

/**
     * 数据填充
     *
     * @param val          填充值
     * @param tempId       模板id
     * @param regulationId 资讯id
     * @param tarDir       本地磁盘目录
     */
public void setVals(Map<String, Object> val, String tempId, String regulationId, String tarDir) {
PrintWriter writer = null;
        try {
Context context = new Context();
            context.setVariables(val);
            File dirPath = new File(tarDir);
            if (!dirPath.exists()) {
dirPath.mkdirs();
            }
File uploadFile = new File(tarDir, regulationId + CACHE_FILE_SUFFIX);// ResourceUtils.getFile("classpath:templates/" + templateId + ".html");
if (uploadFile.exists()) {
uploadFile.delete();
            }
writer = new PrintWriter(uploadFile, "UTF-8");
            // 生成html，第一个参数是thymeleaf页面下的原型名称
templateEngine.process(tempId, context, writer);
        } catch (Exception e) {
            log.error(e.getMessage());
        } finally {
if(null!=writer){
writer.close();
            }
        }
    }
}

// 后台数据设置到js变量中var down_url = [[${downUrl}]];//"http://127.0.0.1:8080/downFile";var arry = [];arry = [[${FileList}]];

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原文地址：https://www.cnblogs.com/sung1024/p/11700395.html