为什么这个Spring应用程序不起作用？

Question

I have this project . Then I do the following steps:

1. cd spring-boot-aws-spike
2. mvn clean compile install spring-boot:repackage
3. cd target
4. java -jar spring-boot-sample-0.0.1-SNAPSHOT.war
5. Go to http://localhost:8080/
6. Expected result: Error message (rendered in browser)

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback. Tue Aug 27 16:59:23 CEST 2019 There was an unexpected error (type=Not Found, status=404). No message available

How can I change the attached code so that instead of this error, the file index.xhtml is rendered?

Update 1: If I go to http://localhost:8080/index.html , I get this error:

Whitelabel Error Page This application has no explicit mapping for /error, so you are seeing this as a fallback.

Tue Aug 27 17:07:53 CEST 2019 There was an unexpected error (type=Not Found, status=404). No message available

Looks the same as before.

Answer 1

This example seems to be incomplete (some code is missing). I got this in logs after running it:

2019-08-27 17:19:42.119 ERROR 12588 --- [nio-8080-exec-3] o.a.c.c.C.[.[.[/].[facesServlet]         : Servlet.service() for servlet [facesServlet] in context with path [] threw exception [/file:/D:/workspace/spring-boot-sample-master/target/spring-boot-sample-0.0.1-SNAPSHOT.war*/index.xhtml @7,8 <p:> Tag Library supports namespace: http://xmlns.jcp.org/jsf/passthrough, but no tag was defined for name: ] with root cause

javax.faces.view.facelets.TagException: /file:/D:/workspace/spring-boot-sample-master/target/spring-boot-sample-0.0.1-SNAPSHOT.war*/index.xhtml @7,8 <p:> Tag Library supports namespace: http://xmlns.jcp.org/jsf/passthrough, but no tag was defined for name:

It works when You remove missing tag declaration from index.xhtml (still have to point directly to index -> http://localhost:8080/index.xhtml ):

<ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:f="http://java.sun.com/jsf/core" xmlns:h="http://java.sun.com/jsf/html">

    <div class="row">
        Heyo!
    </div>
</ui:composition>