Java GET没有映射

我通常使用xml配置，但现在只想使用java配置，但我的代码有点问题，我不知道要更改什么，因为一切似乎都很好

在glass fish上运行spring应用程序后，我遇到此错误：

[glassfish 5.0][WARNING][[org.springframework.web.servlet.PageNotFound][tid:_ThreadID=30 _ThreadName=http-listener-1（2）][timeMillis:1619543716623][levelValue:900][[GET/spring\u project-1.0-SNAPSHOT/home/showHome/]无映射。

这是我的

控制器：

    @Controller
    @RequestMapping("/home")
    public class HomeController {
    
        @RequestMapping("/showHome")
        public String showHome() {
    
            return "home";
        }
    }

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.config")
public class AppConfig {

    @Bean
    public ViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setViewClass(JstlView.class);
        viewResolver.setPrefix("/WEB-INF/view/");
        viewResolver.setSuffix(".jsp");

        return viewResolver;
    }

    public class AppIntializer  implements WebApplicationInitializer {

    @Override
    public void onStartup(ServletContext container) {
        // Create the 'root' Spring application context
        AnnotationConfigWebApplicationContext rootContext =
                new AnnotationConfigWebApplicationContext();
        rootContext.register(AppConfig.class);

        // Manage the lifecycle of the root application context
        container.addListener(new ContextLoaderListener(rootContext));

        // Create the dispatcher servlet's Spring application context
        AnnotationConfigWebApplicationContext dispatcherContext =
                new AnnotationConfigWebApplicationContext();
        dispatcherContext.register(AppConfig.class);

        // Register and map the dispatcher servlet
        ServletRegistration.Dynamic dispatcher =
                container.addServlet("dispatcher", new DispatcherServlet(dispatcherContext));
        dispatcher.setLoadOnStartup(1);
        dispatcher.addMapping("/");
    }

}

我的

视图解析器：

    @Controller
    @RequestMapping("/home")
    public class HomeController {
    
        @RequestMapping("/showHome")
        public String showHome() {
    
            return "home";
        }
    }

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.config")
public class AppConfig {

    @Bean
    public ViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setViewClass(JstlView.class);
        viewResolver.setPrefix("/WEB-INF/view/");
        viewResolver.setSuffix(".jsp");

        return viewResolver;
    }

    public class AppIntializer  implements WebApplicationInitializer {

    @Override
    public void onStartup(ServletContext container) {
        // Create the 'root' Spring application context
        AnnotationConfigWebApplicationContext rootContext =
                new AnnotationConfigWebApplicationContext();
        rootContext.register(AppConfig.class);

        // Manage the lifecycle of the root application context
        container.addListener(new ContextLoaderListener(rootContext));

        // Create the dispatcher servlet's Spring application context
        AnnotationConfigWebApplicationContext dispatcherContext =
                new AnnotationConfigWebApplicationContext();
        dispatcherContext.register(AppConfig.class);

        // Register and map the dispatcher servlet
        ServletRegistration.Dynamic dispatcher =
                container.addServlet("dispatcher", new DispatcherServlet(dispatcherContext));
        dispatcher.setLoadOnStartup(1);
        dispatcher.addMapping("/");
    }

}

}

和

WebAppInitializer:

    @Controller
    @RequestMapping("/home")
    public class HomeController {
    
        @RequestMapping("/showHome")
        public String showHome() {
    
            return "home";
        }
    }

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = "com.config")
public class AppConfig {

    @Bean
    public ViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setViewClass(JstlView.class);
        viewResolver.setPrefix("/WEB-INF/view/");
        viewResolver.setSuffix(".jsp");

        return viewResolver;
    }

    public class AppIntializer  implements WebApplicationInitializer {

    @Override
    public void onStartup(ServletContext container) {
        // Create the 'root' Spring application context
        AnnotationConfigWebApplicationContext rootContext =
                new AnnotationConfigWebApplicationContext();
        rootContext.register(AppConfig.class);

        // Manage the lifecycle of the root application context
        container.addListener(new ContextLoaderListener(rootContext));

        // Create the dispatcher servlet's Spring application context
        AnnotationConfigWebApplicationContext dispatcherContext =
                new AnnotationConfigWebApplicationContext();
        dispatcherContext.register(AppConfig.class);

        // Register and map the dispatcher servlet
        ServletRegistration.Dynamic dispatcher =
                container.addServlet("dispatcher", new DispatcherServlet(dispatcherContext));
        dispatcher.setLoadOnStartup(1);
        dispatcher.addMapping("/");
    }

}

---

您需要在此行中指定HTTP方法

@RequestMapping("/showHome")

或者只是使用

@GetMapping

此外，请阅读下面的页面，它可能会很有用

---

从错误中可以看出，您正在尝试访问

GET/spring\u project-1.0-SNAPSHOT/home/showHome/

。尝试检查您正在访问的路径，我认为它应该是

/home/showHome/

仍然不起作用。当我使用

web.xml

/home/showHome/

！=<代码>/home/showHome