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[英]Spring boot redirect to error page when catch the thymeleaf exception
[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="'<!--'" 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="'-->'" 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:
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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