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Spring 引导 - Thymeleaf - 重定向到错误页面

[英]Spring Boot - Thymeleaf - redirect to Error page

我有一个 SpringBoot 应用程序。 Thymeleaf

我的属性文件中有这个:

# max file size - default 1MB
spring.servlet.multipart.max-file-size=10MB
# max request size - default 10MB
spring.servlet.multipart.max-request-size=25MB

这个 controller:

@Controller
public class MyErrorController implements ErrorController {

    private final static String PATH = "/error";

    @RequestMapping(PATH)
    @ResponseBody
    public String getErrorPath() {
        return "error/genericError";
    }


}

和这个错误页面:

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">

<body>
 <div class="container">

        <div class="jumbotron text-center">

            <h1>Uh-oh! Something Happened!</h1>
            <!--  As we are using Thymeleaf, you might consider using
                  ${#httpServletRequest.requestURL}. But that returns the path
                  to this error page.  Hence we explicitly add the url to the
                  Model in some of the example code. -->
            <p th:if="${url}">
                <b>Page:</b> <span th:text="${url}">Page URL</span>
            </p>

            <p th:if="${timestamp}" id='created'>
                <b>Occurred:</b> <span th:text="${timestamp}">Timestamp</span>
            </p>

            <p>Devopsbuddy has encountered an error. Please contact support
                by clicking <a th:href="@{/contact}">here.</a></p>

            <p>Support may ask you to right click to view page source.</p>

            <!--
              // Hidden Exception Details  - this is not a recommendation, but here is
              // how you hide an exception in the page using Thymeleaf
              -->
            <div th:utext="'&lt;!--'" th:remove="tag"></div>
            <div th:utext="'Failed URL: ' +  ${url}" th:remove="tag">${url}</div>
            <div th:utext="'Exception: ' + ${exception.message}" th:remove="tag">${exception.message}</div>
            <ul th:remove="tag">
                <li th:each="ste : ${exception.stackTrace}" th:remove="tag"><span
                        th:utext="${ste}" th:remove="tag">${ste}</span></li>
            </ul>
            <div th:utext="'--&gt;'" th:remove="tag"></div>

        </div>

    </div>

</body>
</html>

但是当我尝试上传大于 10MB 的文件时

我没有看到错误页面,但是:

在此处输入图像描述

请从您的 controller 方法中删除@ResponseBody注释,此注释表示返回的 object 应自动序列化为 JSON 并传递回提供给客户端的响应。

您的代码应如下所示:

@RequestMapping(PATH)
public String getErrorPath() {
  return "error/genericError";
}

如@JustAnotherDeveloper 所示, error/genericError匹配位于适当文件夹中的有效文件(HTML、jsp 等),在您的情况下,是您的自定义错误页面。

你的返回变量是一个字符串,你想返回一个视图,就像这样(假设错误是模板名称):

    @RequestMapping(PATH)
    @ResponseBody
    public ModelAndView getErrorPath() {
            return new ModelAndView("Error");
    }

必须正确映射返回的错误页面:

一种方法是通过 Spring 启动 application.properties 文件:

spring.mvc.view.prefix=/WEB-INF/
spring.mvc.view.suffix=.jsp (or) html

样本 Controller:

@GetMapping(value = "login")
public String getLoginPage() {
    return "dummyPage";
}

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