使用 Spring DispatcherServlet 自定义 404
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Custom 404 using Spring DispatcherServlet
提问by njdeveloper
I've set up web.xml as below. I also have an annotation-based controller, which takes in any URL pattern and then goes to the corresponding jsp (I've set that up in the -servlet.xml). However, If I go to a page that ends in .html (and whose jsp doesn't exist), I don't see the custom 404 page (and see the below error in the log). Any page that doesn't end in .html, I can see the custom 404 page.
我已经设置了 web.xml 如下。我还有一个基于注解的控制器，它接受任何 URL 模式，然后转到相应的 jsp（我已经在 -servlet.xml 中设置了它）。但是，如果我转到以 .html 结尾的页面（并且其 jsp 不存在），我将看不到自定义 404 页面（并在日志中看到以下错误）。任何不以 .html 结尾的页面，我都可以看到自定义 404 页面。
How can I configure to have a custom 404 page for any page that goes through the DispatcherServlet?
如何为通过 DispatcherServlet 的任何页面配置自定义 404 页面？
Also want to add that if I set my error page to a static page (ie. error.htm) it works, but if I change it to a jsp (ie. error.jsp), I get the IllegalStateException. Any help would be appreciated.
还想补充一点，如果我将错误页面设置为静态页面（即 error.htm），它可以工作，但如果我将其更改为 jsp（即 error.jsp），则会出现 IllegalStateException。任何帮助，将不胜感激。
log error
记录错误
Caused by: java.lang.IllegalStateException: getOutputStream() has already been called for this response
at org.apache.catalina.connector.Response.getWriter(Response.java:606)
at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:195)
at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:124)
controller
控制器
@RequestMapping(value = {"/**"})
public ModelAndView test() {
ModelAndView modelAndView = new ModelAndView();
return modelAndView;
}
web.xml
网页.xml
<servlet>
<servlet-name>my_servlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
...
...
<servlet-mapping>
<servlet-name>my_servlet</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
...
...
<error-page>
<error-code>404</error-code>
<location>/error.html</location>
</error-page>
回答by Rob Beardow
One option is to map all your error pages through your dispatcher servlet.
一种选择是通过调度程序 servlet 映射所有错误页面。
Create a new HTTP error controller:
创建一个新的 HTTP 错误控制器：
@Controller
public class HTTPErrorController {
@RequestMapping(value="/errors/404.html")
public String handle404() {
return "errorPageTemplate";
}
@RequestMapping(value="/errors/403.html")
...
}Map the error pages in web.xml
映射 web.xml 中的错误页面
<error-page>
<error-code>404</error-code>
<location>/errors/404.html</location>
</error-page>