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未在前端显示错误信息的直接属性(Springpost + Thyeme pages)
原标题:Redirect attributes not showing error message on front end (Springboot + Thyemeleaf)

不管条件是什么(教育/推广/失败),在前线上只显示成功的信息。 即使我执行重复数据,也只展示成功的信息。

审计长:

@PostMapping("/add-category")
public String add(@ModelAttribute("categoryNew") Category category, RedirectAttributes attributes) {
    try {

        categoryService.save(category);

        attributes.addFlashAttribute("success", "Added successfully");
    } catch (DataIntegrityViolationException e) {
        attributes.addFlashAttribute("duplicate", "Duplicate entry not possible");
        e.printStackTrace();
        System.out.println("Duplicate");

    } catch (Exception e) {
        e.printStackTrace();
        attributes.addFlashAttribute("failed", "Error server");
    }
    return "redirect:/categories";
}

图瓦卢:

<div class="mb-3"></div>

<div th:if = "${success}" class="text-center alert alert-success">
    <p th:text="${success}"></p>
</div>

<div th:if = "${failed}" class="text-center alert alert-danger">
    <p th:text="${failed}"></p>
</div>

<div th:if = "${duplicate}" class="text-center alert alert-danger">
    <p th:text="${duplicate}"></p>
</div>

我试图展示“复制”这一错误信息。 但是,只有成功的信息正在显现。

问题回答

暂无回答




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