将分页与 Spring Boot 和 Thymeleaf 一起使用时出错

Question

下面有一些代码可以对控制器发送的数据进行分页：

    <div class="col-xs-12 col-md-6">
        <ul class="list-group">
            <li class="list-group-item" th:each="history:${batchExecuteHistory}"
                th:if="${history.status == true}">
                <button type="button" class="btn btn-success">Success</button> 
                <span th:text="${history.timeEnd}"></span>
                <span th:text="${history.rowInput}"></span>
            </li>
            <li class="list-group-item" th:each="history:${batchExecuteHistory}"
                th:if="${history.status == false}">
                <button type="button" class="btn btn-danger">Danger</button> 
                <span th:text="${history.timeEnd}"></span> 
                <span th:text="${history.errorContent}"></span>
            </li>
        </ul>
        <ul class="pagination">
            <li th:each='i : ${#numbers.sequence(0, nubmerOfPage.totalPages-1)}'
                th:class="(${i}==${pnubmerOfPage.number})? 'active' : ''"
                style="display: inline"><span th:if='${i}==${nubmerOfPage.number}'
                th:text='${i+1}'>1</span> <a th:if='${i}!=${nubmerOfPage.number}'
                th:href="@{${url}(nubmerOfPage=${i})}"> <span th:text='${i+1}'>1</span></a>
            </li>
        </ul>
    </div>

我收到这样的错误：

org.thymeleaf.exceptions.TemplateProcessingException：评估 SpringEL 表达式的异常：“#numbers.sequence(0, nubmerOfPage.totalPages-1)”

控制器中的代码：

Page<BatchExecuteHistory> batchExecuteHistory = 
    batchExecuteHistoryService.getBatchExecuteHistory(id, pageable);
    model.addAttribute("jobDetailModel", jobDetailModel);
    model.addAttribute("batchExecuteHistory", batchExecuteHistory);
    model.addAttribute("nubmerOfPage", batchExecuteHistory.getContent());
    model.addAttribute("url", "/jobManagementDetail/{id}/{name}/{time}");

我找到了根本问题：

org.springframework.expression.spel.SpelEvaluationException: EL1008E: 在“java.util.Collections$UnmodifiableRandomAccessList”类型的对象上找不到属性或字段“totalPages” - 可能不公开？

我在此链接中使用代码：Implement paging function with Spring Boot + Thymeleaf

有人知道为什么吗？请帮忙

Answer 1

在您提供的教程中，它说您必须像这样使用控制器：

@RequestMapping(value="/word/wordList", method=RequestMethod.GET)
public String getWordList(Model model, Pageable pageable) {
    Page<Word> wordPage = wordService.getAllWord(pageable);
    PageWrapper<Word> page = new PageWrapper<Word>(wordPage, "/word/wordList");
    model.addAttribute("page", page); //HERE
    model.addAttribute("words", page.getContent());

    return "/word/wordList";
}

但是你设置了：

model.addAttribute("nubmerOfPage", batchExecuteHistory.getContent());

所以设置它应该可以解决它：

model.addAttribute("nubmerOfPage", batchExecuteHistory);