Spring 5 MVC 沒有找到到控制器返回 JSON 的映射

Question

我是 Spring 5 的新手，我一直在研究有關 Spring 5 MVC 的所有不同站點，盡可能多地學習，但仍然無法得到“http://localhost/[webcontext]/secure”的響應/json/組織”。 我最終得到了這個：[osweb.servlet.DispatcherServlet] Completed 404 NOT_FOUND。 我可以判斷該類已加載並且自動裝配完成，因為我必須解決這些問題。 下面是我的代碼。 我錯過了什么或做錯了什么？

注冊RestController.java

package c.i.i.w.e.controllers;

@RestController
public class EnrollmentRestController extends AbstractIfactoryController
{
  @GetMapping(path = "/secure/json/organizations", produces = MediaType.APPLICATION_JSON_VALUE)
  public QueryResults<OrganizationQueryResult> execute() throws ApplicationException
  {
    return super.getEnrollmentService().findOrganizations();
  }
}

ApplicationInitializer.java：

package c.i.i.w.e.config;

@Configuration
@EntityScan("c.i.i.w.e")
@ComponentScan(basePackages = {"c.i.i.w.e"})
public class ApplicationInitializer implements WebApplicationInitializer
{
  static final String PU_NAME                 = "i";
  static final String SERVLET_MAPPING         = "/";
  static final String SERVLET_NAME            = "spring";

  @Bean(name = "entityManagerFactory")
  public LocalEntityManagerFactoryBean entityManagerFactory()
  {
    LocalEntityManagerFactoryBean entityManagerFactory = new LocalEntityManagerFactoryBean();

    entityManagerFactory.setPersistenceUnitName(PU_NAME);

    return entityManagerFactory;
  }

  private void newAppServlet(
    ServletContext servletContext,
    AnnotationConfigWebApplicationContext appContext)
  {
    DispatcherServlet dispatcherServlet = new DispatcherServlet(appContext);
    ServletRegistration.Dynamic appServlet = servletContext.addServlet(SERVLET_NAME,
      dispatcherServlet);

    appServlet.setLoadOnStartup(1);
    appServlet.addMapping(SERVLET_MAPPING);
  }

  @Override
  public void onStartup(
    ServletContext servletContext) throws ServletException
  {
    AnnotationConfigWebApplicationContext appContext = new AnnotationConfigWebApplicationContext();

    appContext.register(DispatcherConfig.class);
    appContext.setServletContext(servletContext);
    appContext.refresh();

    servletContext.addListener(new ContextLoaderListener(appContext));

    newAppServlet(servletContext, appContext);
  }
}

調度程序配置文件

package c.i.i.w.e.config;

@Configuration
@EnableWebMvc
public class DispatcherConfig implements WebMvcConfigurer
{
  @Override
  public void configureDefaultServletHandling(
    DefaultServletHandlerConfigurer configurer)
  {
    configurer.enable();
  }

  @Override
  public void configureContentNegotiation(
    ContentNegotiationConfigurer configurer)
  {
    configurer.favorPathExtension(false).favorParameter(true);
  }

  @Override
  public void configurePathMatch(
    PathMatchConfigurer configurer)
  {
    configurer.setUseSuffixPatternMatch(false);
  }

  @Override
  public void addResourceHandlers(
    ResourceHandlerRegistry registry)
  {
    registry.addResourceHandler("/js/**").addResourceLocations("/js/").setCachePeriod(31556926);
  }

  @Bean
  public ViewResolver internalResourceViewResolver()
  {
    InternalResourceViewResolver bean = new InternalResourceViewResolver();
    
    bean.setViewClass(JstlView.class);
    bean.setSuffix(".jsp");
    
    return bean;
  }
}

這是日志文件的最后幾行

2020-08-26 16:13:50,566 DEBUG [org.springframework.web.servlet.DispatcherServlet] GET "/ifactory-enroll/images/ICU_Logo_New_Blue.png", parameters={}
2020-08-26 16:13:50,566 DEBUG [org.springframework.web.servlet.handler.SimpleUrlHandlerMapping] Mapped to org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler@f3bb1d
2020-08-26 16:13:50,567 DEBUG [org.springframework.web.servlet.DispatcherServlet] Completed 304 NOT_MODIFIED
2020-08-26 16:13:56,047 DEBUG [org.springframework.web.servlet.DispatcherServlet] GET "/ifactory-enroll/secure/json/organizations", parameters={}
2020-08-26 16:13:56,048 DEBUG [org.springframework.web.servlet.handler.SimpleUrlHandlerMapping] Mapped to org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler@f3bb1d
2020-08-26 16:13:56,049 DEBUG [org.springframework.web.servlet.DispatcherServlet] Completed 404 NOT_FOUND

Answer 1

我不確定哪個更改解決了這個問題，但這是現在有效的最終結果。

應用初始化程序

@Configuration
public class ApplicationInitializer implements WebApplicationInitializer
{
  static final String BASE_PACKAGES   = "c.i.i.web.enroll";
  static final String PU_NAME         = "i";
  static final String SERVLET_MAPPING = "/";
  static final String SERVLET_NAME    = "spring";

  @Bean(name = "entityManagerFactory")
  public LocalEntityManagerFactoryBean entityManagerFactory()
  {
    LocalEntityManagerFactoryBean entityManagerFactory = new LocalEntityManagerFactoryBean();

    entityManagerFactory.setPersistenceUnitName(PU_NAME);

    return entityManagerFactory;
  }

  private void newAppServlet(
    ServletContext servletContext)
  {
    AnnotationConfigWebApplicationContext dispatcherContext = new AnnotationConfigWebApplicationContext();
    DispatcherServlet dispatcherServlet;
    ServletRegistration.Dynamic dispatcher;

    dispatcherContext.register(DispatcherConfig.class);
    
    dispatcherServlet = new DispatcherServlet(dispatcherContext);
    
    dispatcher = servletContext.addServlet(SERVLET_NAME, dispatcherServlet);
    dispatcher.setLoadOnStartup(1);
    dispatcher.addMapping(SERVLET_MAPPING);
  }

  @Override
  public void onStartup(
    ServletContext servletContext) throws ServletException
  {
    AnnotationConfigWebApplicationContext rootContext = new AnnotationConfigWebApplicationContext();

    rootContext.register(AppConfig.class);

    servletContext.addListener(new ContextLoaderListener(rootContext));

    newAppServlet(servletContext);
  }
}

調度程序配置文件

@Configuration
@EnableWebMvc
@ComponentScan({"c.i.i.web.enroll"})
public class DispatcherConfig implements  WebMvcConfigurer 
{
  @Override
  public void configureDefaultServletHandling(
    DefaultServletHandlerConfigurer configurer)
  {
    configurer.enable();
  }

  @Override
  public void configureContentNegotiation(
    ContentNegotiationConfigurer configurer)
  {
    configurer.favorPathExtension(false).favorParameter(true);
  }

  @Override
  public void configurePathMatch(
    PathMatchConfigurer configurer)
  {
    configurer.setUseSuffixPatternMatch(false);
  }


  @Override
  public void addResourceHandlers(
    ResourceHandlerRegistry registry)
  {
    registry.addResourceHandler("/js/**").addResourceLocations("/js/").setCachePeriod(31556926);
  }

  @Bean
  public ViewResolver internalResourceViewResolver()
  {
    InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
    
    viewResolver.setViewClass(JstlView.class);
    viewResolver.setPrefix("/");
    viewResolver.setSuffix(".jsp");
    
    return viewResolver;
  }
}

Answer 2

你本地服務器的端口是什么？ 您沒有端口號，例如 http://localhost:portNumber/secure/json/organizations 您可以嘗試 8080 或其他默認值，具體取決於您的本地服務器。