Spring控制器無法識別

Question

我正在嘗試使用類配置和沒有web.xml來設置一個簡單的spring mvc應用程序。 出於某種原因，在組件掃描期間似乎未正確掃描我的控制器。

我的項目如下：

src/main/java
 -org.webapp.mvc
   -config
     WebAppInitializer
     WebConfig
   -controllers
     SimpleController

src/main/webapp
   -hello.jsp
   -index.jsp

WebAppInitializer：

public class WebAppInitializer implements WebApplicationInitializer {

@Override
public void onStartup(ServletContext servletContext) throws ServletException     {
    WebApplicationContext context = getContext(); //spring configuration  context
    servletContext.addListener(new ContextLoaderListener(context));
    ServletRegistration.Dynamic dispatcher =  servletContext.addServlet("DispatcherServlet", new DispatcherServlet(context));
    dispatcher.setLoadOnStartup(1);
    dispatcher.addMapping("/*"); //URL mapping
}

private AnnotationConfigWebApplicationContext getContext() {
    AnnotationConfigWebApplicationContext context = new  AnnotationConfigWebApplicationContext();
    context.setConfigLocation("org.webapp.mvc.config.WebConfig");
    return context;
}

}

WebConfig：

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "org.webapp.mvc.controllers")
public class WebConfig {

}

SimpleController：

@Controller
public class SimpleController {

@RequestMapping(value = "/greeting")
public String test(Model model){
    model.addAttribute("greeting", "Hello World");
    return "hello.jsp";
}

}

據說'localhost：8080 / project / greeting'應該服務'hello.jsp'，但它顯示URI沒有metching映射：

03:22:15.385 [http-nio-8080-exec-3] DEBUG o.s.web.servlet.DispatcherServlet -     DispatcherServlet with name 'DispatcherServlet' processing GET request for     [/project/greeting]
03:22:15.385 [http-nio-8080-exec-3] WARN  o.s.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/project/greeting] in DispatcherServlet with name 'DispatcherServlet'
03:22:15.385 [http-nio-8080-exec-3] DEBUG o.s.web.servlet.DispatcherServlet - Successfully completed request

知道我做錯了什么嗎？

[更新]添加調試：

    03:22:08.824 [localhost-startStop-1] INFO  o.s.web.servlet.DispatcherServlet - FrameworkServlet 'DispatcherServlet': initialization started
    03:22:08.828 [localhost-startStop-1] DEBUG o.s.web.servlet.DispatcherServlet - Unable to locate MultipartResolver with name 'multipartResolver': no multipart request handling provided
    03:22:08.829 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver'
    03:22:08.872 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver'
    03:22:08.872 [localhost-startStop-1] DEBUG o.s.web.servlet.DispatcherServlet - Unable to locate LocaleResolver with name 'localeResolver': using default [org.springframework.web.servlet.i18n.AcceptHeaderLocaleResolver@587b4b84]
    03:22:08.874 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.theme.FixedThemeResolver'
    03:22:08.880 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.theme.FixedThemeResolver'
    03:22:08.880 [localhost-startStop-1] DEBUG o.s.web.servlet.DispatcherServlet - Unable to locate ThemeResolver with name 'themeResolver': using default [org.springframework.web.servlet.theme.FixedThemeResolver@7e02662a]
    03:22:08.886 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping'
    03:22:08.906 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Looking for URL mappings in application context: Root WebApplicationContext: startup date [Sat Apr 18 03:22:08 IDT 2015]; root of context hierarchy
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'org.springframework.context.annotation.internalRequiredAnnotationProcessor': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'org.springframework.context.annotation.internalCommonAnnotationProcessor': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'org.springframework.context.annotation.ConfigurationClassPostProcessor.enhancedConfigurationProcessor': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'environment': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'systemProperties': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'systemEnvironment': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'servletContext': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'contextParameters': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'contextAttributes': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'messageSource': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'applicationEventMulticaster': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.w.s.h.BeanNameUrlHandlerMapping - Rejected bean name 'lifecycleProcessor': no URL paths identified
    03:22:08.907 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping'
    03:22:08.908 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping'
    03:22:08.916 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Looking for URL mappings in application context: Root WebApplicationContext: startup date [Sat Apr 18 03:22:08 IDT 2015]; root of context hierarchy
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'org.springframework.context.annotation.internalConfigurationAnnotationProcessor': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'org.springframework.context.annotation.internalAutowiredAnnotationProcessor': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'org.springframework.context.annotation.internalRequiredAnnotationProcessor': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'org.springframework.context.annotation.internalCommonAnnotationProcessor': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'org.springframework.context.annotation.ConfigurationClassPostProcessor.enhancedConfigurationProcessor': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'environment': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'systemProperties': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'systemEnvironment': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'servletContext': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'contextParameters': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'contextAttributes': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'messageSource': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'applicationEventMulticaster': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.w.s.m.a.DefaultAnnotationHandlerMapping - Rejected bean name 'lifecycleProcessor': no URL paths identified
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping'
    03:22:08.918 [localhost-startStop-1] DEBUG o.s.web.servlet.DispatcherServlet - No HandlerMappings found in servlet 'DispatcherServlet': using default
    03:22:08.921 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter'
    03:22:08.924 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter'
    03:22:08.926 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter'
    03:22:08.928 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter'
    03:22:08.930 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter'
    03:22:09.049 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter'
    03:22:09.049 [localhost-startStop-1] DEBUG o.s.web.servlet.DispatcherServlet - No HandlerAdapters found in servlet 'DispatcherServlet': using default
    03:22:09.053 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerExceptionResolver'
    03:22:09.063 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerExceptionResolver'
    03:22:09.064 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver'
    03:22:09.069 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver'
    03:22:09.070 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver'
    03:22:09.085 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver'
    03:22:09.085 [localhost-startStop-1] DEBUG o.s.web.servlet.DispatcherServlet - No HandlerExceptionResolvers found in servlet 'DispatcherServlet': using default
    03:22:09.088 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator'
    03:22:09.093 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator'
    03:22:09.093 [localhost-startStop-1] DEBUG o.s.web.servlet.DispatcherServlet - Unable to locate RequestToViewNameTranslator with name 'viewNameTranslator': using default [org.springframework.web.servlet.view.DefaultRequestToViewNameTranslator@18abaed]
    03:22:09.096 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.view.InternalResourceViewResolver'
    03:22:09.114 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.view.InternalResourceViewResolver'
    03:22:09.114 [localhost-startStop-1] DEBUG o.s.web.servlet.DispatcherServlet - No ViewResolvers found in servlet 'DispatcherServlet': using default
    03:22:09.119 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'org.springframework.web.servlet.support.SessionFlashMapManager'
    03:22:09.128 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'org.springframework.web.servlet.support.SessionFlashMapManager'
    03:22:09.128 [localhost-startStop-1] DEBUG o.s.web.servlet.DispatcherServlet - Unable to locate FlashMapManager with name 'flashMapManager': using default [org.springframework.web.servlet.support.SessionFlashMapManager@726c87e9]
    03:22:09.128 [localhost-startStop-1] DEBUG o.s.web.servlet.DispatcherServlet - Published WebApplicationContext of servlet 'DispatcherServlet' as ServletContext attribute with name [org.springframework.web.servlet.FrameworkServlet.CONTEXT.DispatcherServlet]
    03:22:09.128 [localhost-startStop-1] INFO  o.s.web.servlet.DispatcherServlet - FrameworkServlet 'DispatcherServlet': initialization completed in 304 ms
    03:22:09.128 [localhost-startStop-1] DEBUG o.s.web.servlet.DispatcherServlet - Servlet 'DispatcherServlet' configured successfully

Answer 1

將以下內容添加到WebConfig

    @Bean
    public UrlBasedViewResolver jspResolver(){
        System.out.println("in WebConfig jspResolver");
        UrlBasedViewResolver urlBasedViewResolver = new UrlBasedViewResolver();
        urlBasedViewResolver.setViewClass(JstlView.class);
        urlBasedViewResolver.setPrefix("/");
        urlBasedViewResolver.setSuffix(".jsp");
        return urlBasedViewResolver;
    }

這將允許將JSP映射為JSP，而不是期望具有這種映射的控制器

在WebAppInitializer中更改以下行

    dispatcher.addMapping("/*"); //URL mapping

至

    dispatcher.addMapping("/"); //URL mapping

這將使這個servlet成為默認映射，而不是將其用於所有內容。

將SimpleController更改為"hello"而不是"hello.jsp"以便ViewResolver創建正確的路徑。

確保將maven資源javax.servlet：jstl：1.2打包到類中或安裝到Tomcat中，因為它不是標准的。

通過這些更改，它可以在我的環境中運行

順便說一句：我用spring-webmvc-4.1.6.RELEASE我也用spring-webmvc-3.2.13.RELEASE運行它

我在這里添加了我的Pom，其中包含運行代碼所需的最小依賴項集。

<project xmlns="http://maven.apache.org/POM/4.0.0" 
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>annotationConfig1</groupId>
    <artifactId>annotationConfig1</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <build>
        <sourceDirectory>src</sourceDirectory>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.4</version>
                <configuration>
                    <warSourceDirectory>WebContent</warSourceDirectory>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>3.2.13.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>6.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

    </dependencies>
</project>

Answer 2

請將@EnableAutoConfiguration添加到控制器類。

Answer 3

@RequestMapping(value = "/greeting")
public String test(Model model){
    model.addAttribute("greeting", "Hello World");
    return "hello.jsp";
}

我在你的代碼中看到的是，你添加了帶有“/ greeting”的請求映射，所以url應該是這樣的： hostname：port / greeting

如果您使用嵌入式服務器或IDE（例如IntelliJ IDEA）在本地計算機上運行，​​請嘗試：

HTTP：//本地主機：8080 /問候

如果你正在運行不同的服務器，比如tomcat，將你的戰爭重命名為ROOT.war，並把它放在webapps文件夾和上面的url就行了。

如果您不重命名它，並保留project.war，那么您將能夠訪問

HTTP：//本地主機：8080 /項目/問候

Answer 4

確保您的控制器類位於org.webapp.mvc.controllers包中，從日志中看，它看起來不像掃描正在拾取類及其URL映射