那些遇到过的问题

SpringBoot Web MVC 应用程序无法解析视图

Nir*_*dia 1 java spring spring-mvc spring-boot

我已经使用 Spring Boot ReST API 有一段时间了；我想尝试使用 web-MVC。但是，我被困在第一部分本身。

我已将项目上传到GitHub

到目前为止我做了什么：

  1. 主要POM.xml用spring-boot-starter-web+定义tomcat-embed-jasper。
  2. 定义了一个@Controllerwith @GetMapping("/greeting")，它返回视图的名称 -hello

  3. 定义了以下属性：

    spring.mvc.view.prefix=/WEB-INF/views/

    spring.mvc.view.suffix=.jsp

  4. 创造了一个非常基本的观点hello.jsp在src/main/web/WEB-INF/views/hello.jsp

  5. 创建了一个main应用程序作为SpringBootApplication.

错误：

白标错误页面

此应用程序没有明确的 /error 映射，因此您将其视为后备。

2018 年 3 月 26 日星期一 22:55:03 IST

出现意外错误（类型=未找到，状态=404）。没有可用的消息

日志：

2018-03-26 22:55:02.998 DEBUG 7132 --- [nio-8080-exec-1] o.a.coyote.http11.Http11InputBuffer      : Received [GET /greeting HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Cache-Control: max-age=0
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
DNT: 1
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9,hi;q=0.8

]
2018-03-26 22:55:03.043 DEBUG 7132 --- [nio-8080-exec-1] org.apache.tomcat.util.http.Parameters   : Set query string encoding to UTF-8
2018-03-26 22:55:03.054 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.authenticator.AuthenticatorBase    : Security checking request GET /greeting
2018-03-26 22:55:03.054 DEBUG 7132 --- [nio-8080-exec-1] org.apache.catalina.realm.RealmBase      :   No applicable constraints defined
2018-03-26 22:55:03.063 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.a.jaspic.AuthConfigFactoryImpl     : Loading persistent provider registrations from [C:\Users\NirMit\AppData\Local\Temp\tomcat.3836668232954126555.8080\conf\jaspic-providers.xml]
2018-03-26 22:55:03.064 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.authenticator.AuthenticatorBase    :  Not subject to any constraint
2018-03-26 22:55:03.067 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing servlet 'dispatcherServlet'
2018-03-26 22:55:03.068  INFO 7132 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'
2018-03-26 22:55:03.069  INFO 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started
2018-03-26 22:55:03.069 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'multipartResolver'
2018-03-26 22:55:03.069 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Using MultipartResolver [org.springframework.web.multipart.support.StandardServletMultipartResolver@a8d0be]
2018-03-26 22:55:03.070 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Creating instance of bean 'org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver'
2018-03-26 22:55:03.074 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(java.lang.ObjectCustomizer)
2018-03-26 22:55:03.074 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.077 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolverCustomizer)
2018-03-26 22:55:03.079 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.082 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(org.springframework.web.servlet.LocaleResolverCustomizer)
2018-03-26 22:55:03.084 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.084 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Finished creating instance of bean 'org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver'
2018-03-26 22:55:03.085 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Unable to locate LocaleResolver with name 'localeResolver': using default [org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver@1c2a3a2]
2018-03-26 22:55:03.086 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Creating instance of bean 'org.springframework.web.servlet.theme.FixedThemeResolver'
2018-03-26 22:55:03.091 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(java.lang.ObjectCustomizer)
2018-03-26 22:55:03.091 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.093 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(org.springframework.web.servlet.theme.AbstractThemeResolverCustomizer)
2018-03-26 22:55:03.095 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.097 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(org.springframework.web.servlet.theme.FixedThemeResolverCustomizer)
2018-03-26 22:55:03.098 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.101 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(org.springframework.web.servlet.ThemeResolverCustomizer)
2018-03-26 22:55:03.108 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.109 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Finished creating instance of bean 'org.springframework.web.servlet.theme.FixedThemeResolver'
2018-03-26 22:55:03.115 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Unable to locate ThemeResolver with name 'themeResolver': using default [org.springframework.web.servlet.theme.FixedThemeResolver@1855c21]
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'requestMappingHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'viewControllerHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'beanNameHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'resourceHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'defaultServletHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'faviconHandlerMapping'
2018-03-26 22:55:03.116 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'welcomePageHandlerMapping'
2018-03-26 22:55:03.117 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'requestMappingHandlerAdapter'
2018-03-26 22:55:03.117 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'httpRequestHandlerAdapter'
2018-03-26 22:55:03.117 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'simpleControllerHandlerAdapter'
2018-03-26 22:55:03.117 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'errorAttributes'
2018-03-26 22:55:03.117 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'handlerExceptionResolver'
2018-03-26 22:55:03.121 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Creating instance of bean 'org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator'
2018-03-26 22:55:03.124 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(java.lang.ObjectCustomizer)
2018-03-26 22:55:03.124 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.126 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(org.springframework.web.servlet.view.DefaultRequestToViewNameTranslatorCustomizer)
2018-03-26 22:55:03.128 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.130 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(org.springframework.web.servlet.RequestToViewNameTranslatorCustomizer)
2018-03-26 22:55:03.132 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.133 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Finished creating instance of bean 'org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator'
2018-03-26 22:55:03.133 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Unable to locate RequestToViewNameTranslator with name 'viewNameTranslator': using default [org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator@99d4c6]
2018-03-26 22:55:03.133 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'beanNameViewResolver'
2018-03-26 22:55:03.134 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'mvcViewResolver'
2018-03-26 22:55:03.134 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'defaultViewResolver'
2018-03-26 22:55:03.134 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'viewResolver'
2018-03-26 22:55:03.137 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Creating instance of bean 'org.springframework.web.servlet.support.SessionFlashMapManager'
2018-03-26 22:55:03.141 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(java.lang.ObjectCustomizer)
2018-03-26 22:55:03.142 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.143 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(org.springframework.web.servlet.support.AbstractFlashMapManagerCustomizer)
2018-03-26 22:55:03.146 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.153 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(org.springframework.web.servlet.support.SessionFlashMapManagerCustomizer)
2018-03-26 22:55:03.156 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.158 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     findClass(org.springframework.web.servlet.FlashMapManagerCustomizer)
2018-03-26 22:55:03.160 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.loader.WebappClassLoaderBase       :     --> Returning ClassNotFoundException
2018-03-26 22:55:03.161 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Finished creating instance of bean 'org.springframework.web.servlet.support.SessionFlashMapManager'
2018-03-26 22:55:03.161 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Unable to locate FlashMapManager with name 'flashMapManager': using default [org.springframework.web.servlet.support.SessionFlashMapManager@3d023d]
2018-03-26 22:55:03.161 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Published WebApplicationContext of servlet 'dispatcherServlet' as ServletContext attribute with name [org.springframework.web.servlet.FrameworkServlet.CONTEXT.dispatcherServlet]
2018-03-26 22:55:03.161  INFO 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 92 ms
2018-03-26 22:55:03.161 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Servlet 'dispatcherServlet' configured successfully
2018-03-26 22:55:03.177 DEBUG 7132 --- [169.254.165.176] sun.rmi.transport.tcp                    : RMI TCP Connection(3)-169.254.165.176: (port 51150) connection closed
2018-03-26 22:55:03.177 DEBUG 7132 --- [169.254.165.176] sun.rmi.transport.tcp                    : RMI TCP Connection(3)-169.254.165.176: close connection
2018-03-26 22:55:03.200 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.w.s.f.OrderedRequestContextFilter  : Bound request context to thread: org.apache.catalina.connector.RequestFacade@1cc2c8
2018-03-26 22:55:03.211 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/greeting]
2018-03-26 22:55:03.217 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /greeting
2018-03-26 22:55:03.223 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public java.lang.String com.khandhedia.sprinboot.mvc.demo1.controller.GreetingController.greetingForm(org.springframework.ui.Model)]
2018-03-26 22:55:03.223 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'greetingController'
2018-03-26 22:55:03.224 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Last-Modified value for [/greeting] is: -1
2018-03-26 22:55:03.285 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [text/html, application/xhtml+xml, image/webp, image/apng, application/xml;q=0.9, */*;q=0.8] based on Accept header types and producible media types [*/*])
2018-03-26 22:55:03.285 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.servlet.view.BeanNameViewResolver  : No matching bean found for view name 'hello'
2018-03-26 22:55:03.293 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Invoking afterPropertiesSet() on bean with name 'hello'
2018-03-26 22:55:03.295 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Returning [org.springframework.web.servlet.view.JstlView: name 'hello'; URL [/WEB-INF/views/hello.jsp]] based on requested media type 'text/html'
2018-03-26 22:55:03.295 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Rendering view [org.springframework.web.servlet.view.JstlView: name 'hello'; URL [/WEB-INF/views/hello.jsp]] in DispatcherServlet with name 'dispatcherServlet'
2018-03-26 22:55:03.296 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.view.JstlView            : Added model object 'name' of type [java.lang.String] to request in view with name 'hello'
2018-03-26 22:55:03.307 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.view.JstlView            : Forwarding to resource [/WEB-INF/views/hello.jsp] in InternalResourceView 'hello'
2018-03-26 22:55:03.318 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/WEB-INF/views/hello.jsp]
2018-03-26 22:55:03.318 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /WEB-INF/views/hello.jsp
2018-03-26 22:55:03.340 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Did not find handler method for [/WEB-INF/views/hello.jsp]
2018-03-26 22:55:03.340 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping  : Matching patterns for request [/WEB-INF/views/hello.jsp] are [/**]
2018-03-26 22:55:03.342 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping  : URI Template variables for request [/WEB-INF/views/hello.jsp] are {}
2018-03-26 22:55:03.343 DEBUG 7132 --- [nio-8080-exec-1] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapping [/WEB-INF/views/hello.jsp] to HandlerExecutionChain with handler [ResourceHttpRequestHandler [locations=[class path resource [META-INF/resources/], class path resource [resources/], class path resource [static/], class path resource [public/], ServletContext resource [/]], resolvers=[org.springframework.web.servlet.resource.PathResourceResolver@1113a37]]] and 1 interceptor
2018-03-26 22:55:03.344 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Last-Modified value for [/WEB-INF/views/hello.jsp] is: -1
2018-03-26 22:55:03.344 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling
2018-03-26 22:55:03.344 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Successfully completed request
2018-03-26 22:55:03.347 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    :  Disabling the response for further output
2018-03-26 22:55:03.347 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Successfully completed request
2018-03-26 22:55:03.347 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.w.s.f.OrderedRequestContextFilter  : Cleared thread-bound request context: org.apache.catalina.connector.RequestFacade@1cc2c8
2018-03-26 22:55:03.348 DEBUG 7132 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost]           : Processing ErrorPage[errorCode=0, location=/error]
2018-03-26 22:55:03.349 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/error]
2018-03-26 22:55:03.350 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /error
2018-03-26 22:55:03.351 DEBUG 7132 --- [nio-8080-exec-1] s.w.s.m.m.a.RequestMappingHandlerMapping : Returning handler method [public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)]
2018-03-26 22:55:03.351 DEBUG 7132 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Returning cached instance of singleton bean 'basicErrorController'
2018-03-26 22:55:03.352 DEBUG 7132 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Last-Modified value for [/error] is: -1
2018-03-26 22:55:03.354 DEBUG 7132 --- [nio-8080-exec-1] o.s.c.e.PropertySourcesPropertyResolver  : Could not find key 'spring.template.provider.cache' in any property source
2018-03-26 22:55:03.358 DEBUG 7132 --- [nio-8080-exec-1] o.s.c.e.PropertySourcesPropertyResolver  :

Nir*_*dia 5

问题在于用于编译 JSPprovided scope的 Maven 依赖项tomcat-embed-jasper。

使用此 Maven 依赖项的默认范围，它飞起来了！

    <!-- Tomcat for JSP rendering -->
    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-jasper</artifactId>
    </dependency>
Run Code Online (Sandbox Code Playgroud)

从我的分析两分钱！

当我们已经有了 spring-boot-starter-web 时，这个依赖有什么用？

该spring-boot-starter-web包括spring-boot-starter-tomcat和spring-boot-starter-tomcat包括tomcat-embed-core。

但是，tomcat-embed-core不包括tomcat-embed-jasper.

现在，根据maven docs，如果tomcat-embed-jasper被标记为provided，则意味着它期望JDK或容器在运行时提供依赖项。此范围仅在编译和测试类路径上可用，并且不可传递。因此，当 JSP 被编译时，这种依赖实际上是不可用的。

通过将此依赖范围标记为compile，它可以在所有类路径中以及所有依赖项目中使用。

摘要：在spring-boot-starter-web已tomcat嵌入的依赖，但不包括jasper嵌入式依赖。需要使用默认compile范围添加此依赖项。

在 Spring Boot 项目中将 JSP/View 组件放在哪里？

  1. Web使用 Spring Inializr 或 IntelliJ Spring 插件创建一个项目。
  2. Web使用 IDE添加框架支持。它可能会创建一个目录src/main/web/WEB-INF
  3. 将目录重命名web为webapp
  4. 在以下位置创建 JSP 等视图组件 src/main/webapp/WEB-INF/views/

  5. 在 application.properties 中定义以下属性

    spring.mvc.view.prefix=/WEB-INF/views/
spring.mvc.view.suffix=.jsp
    Run Code Online (Sandbox Code Playgroud)

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