Spring REST应用程序配置和启动

Question

我有这个应用程序，以前工作得很好。

我试图运行它很长一段时间后，它不像预期的那样运行。

对不起，没有那么精确的错误问题。

这是一个Spring REST应用程序，它暴露了控制器，它不是Spring MVC应用程序。

这让我为难的是，在调试器中启动它不会有它停止在所有放置在WebConfiguration类的方法断点的第一件事：

package com.nsn.nitro.project.rest.config; 

@Configuration 
@EnableWebMvc 
@EnableSpringDataWebSupport 
@ComponentScan(nameGenerator = PackageBeanNameGenerator.class, basePackages = { "com.nsn.nitro.project.rest" }) 
public class WebConfiguration extends WebMvcConfigurerAdapter { 

    private static final int PAGE_DEFAULT_SIZE = 20; 

    @Override 
    public void addArgumentResolvers(
      List<HandlerMethodArgumentResolver> argumentResolvers) { 
     PageableHandlerMethodArgumentResolver resolver = new PageableHandlerMethodArgumentResolver(); 
     resolver.setFallbackPageable(new PageRequest(0, PAGE_DEFAULT_SIZE)); 
     resolver.setMaxPageSize(50); 
     resolver.setOneIndexedParameters(true); 
     resolver.setPageParameterName("page"); 
     resolver.setSizeParameterName("size"); 
     argumentResolvers.add(resolver); 
     super.addArgumentResolvers(argumentResolvers); 
    } 

    @Bean 
    public MessageSource messageSource() { 
     ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource(); 
     messageSource.setBasenames("classpath:messages/messages", 
       "classpath:messages/validation"); 
     // If true, the key of the message will be displayed if the key is not 
     // found, instead of throwing an exception 
     messageSource.setUseCodeAsDefaultMessage(true); 
     messageSource.setDefaultEncoding("UTF-8"); 
     // The value 0 means always reload the messages to be developer friendly 
     messageSource.setCacheSeconds(0); 
     return messageSource; 
    } 

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

    @Override 
    public void configureDefaultServletHandling(
      DefaultServletHandlerConfigurer configurer) { 
     configurer.enable(); 
    } 

    @Bean 
    public LocaleResolver localeResolver() { 
     return new SmartLocaleResolver(); 
    } 

    @Bean 
    public MultipartResolver multipartResolver() { 
     CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver(); 
     multipartResolver.setMaxUploadSize(1024000); 
     return multipartResolver; 
    } 

    // The locale interceptor provides a way to switch the language in any page 
    // just by passing the lang=’en’, lang=’fr’, and so on to the url 
    @Bean 
    public LocaleChangeInterceptor localeChangeInterceptor() { 
     LocaleChangeInterceptor localeChangeInterceptor = new LocaleChangeInterceptor(); 
     localeChangeInterceptor.setParamName("lang"); 
     return localeChangeInterceptor; 
    } 

    // Avoid caching issue with AngularJS on IE 
    @Bean 
    public WebContentInterceptor webContentInterceptor() { 
     WebContentInterceptor interceptor = new WebContentInterceptor(); 
     interceptor.setCacheSeconds(0); 
     interceptor.setUseExpiresHeader(true); 
     interceptor.setUseCacheControlHeader(true); 
     interceptor.setUseCacheControlNoStore(true); 
     return interceptor; 
    } 

    @Override 
    public void addInterceptors(InterceptorRegistry registry) { 
     registry.addInterceptor(localeChangeInterceptor()); 
     registry.addInterceptor(webContentInterceptor()); 
    } 

以及应用程序配置：

package com.nsn.nitro.project.rest.config;  

@Configuration 
@ComponentScan(nameGenerator = PackageBeanNameGenerator.class, basePackages = { 
     "com.nsn.nitro.project.data.config", 
     "com.nsn.nitro.project.rest.config", 
     "com.nsn.nitro.project.rest.service" }) 
public class ApplicationConfiguration { 

    private static Logger logger = LoggerFactory.getLogger(ApplicationConfiguration.class); 

    public ApplicationConfiguration() { 
     logger.debug("===========>> Loading the NITRO application configuration"); 
    } 

} 

调试器不停止在位于ApplicationConfiguration（）构造函数中的断点处。我无法在控制台日志中看到记录器输出。

的应用似乎开始了罚款，但：

INFO] <<< tomcat7-maven-plugin:2.2:run (default-cli) < process-classes @ nitro-project-rest <<< 
[INFO] 
[INFO] --- tomcat7-maven-plugin:2.2:run (default-cli) @ nitro-project-rest --- 
[INFO] Running war on http://localhost:8080/nitro-project-rest 
[INFO] Creating Tomcat server configuration at /home/stephane/dev/java/projects/nitro-project-rest/target/tomcat 
[INFO] create webapp with contextPath: /nitro-project-rest 
Dec 31, 2016 9:41:14 AM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["http-bio-8080"] 
Dec 31, 2016 9:41:14 AM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["http-bio-8443"] 
Dec 31, 2016 9:41:16 AM org.apache.catalina.core.StandardService startInternal 
INFO: Starting service Tomcat 
Dec 31, 2016 9:41:16 AM org.apache.catalina.core.StandardEngine startInternal 
INFO: Starting Servlet Engine: Apache Tomcat/7.0.47 
Dec 31, 2016 9:41:25 AM org.apache.catalina.core.ApplicationContext log 
INFO: 1 Spring WebApplicationInitializers detected on classpath 
SLF4J: Class path contains multiple SLF4J bindings. 
SLF4J: Found binding in [jar:file:/home/stephane/.m2/repository/org/slf4j/slf4j-log4j12/1.6.4/slf4j-log4j12-1.6.4.jar!/org/slf4j/impl/StaticLoggerBinder.class] 
SLF4J: Found binding in [jar:file:/home/stephane/.m2/repository/ch/qos/logback/logback-classic/1.1.7/logback-classic-1.1.7.jar!/org/slf4j/impl/StaticLoggerBinder.class] 
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation. 
SLF4J: Actual binding is of type [ch.qos.logback.classic.util.ContextSelectorStaticBinder] 
Dec 31, 2016 9:41:26 AM org.apache.coyote.AbstractProtocol start 
INFO: Starting ProtocolHandler ["http-bio-8080"] 
Dec 31, 2016 9:41:26 AM org.apache.coyote.AbstractProtocol start 
INFO: Starting ProtocolHandler ["http-bio-8443"] 

我开始一个Maven命令的应用程序：

mvn clean install tomcat7:run 

但是发送的任何要求，如curl -H "Accept:application/json" --user nsn@nsn.com:******* http://localhost:8080/nitro-project-rest/greeting?message=Steph总是给我下面的错误：

SEVERE: Servlet.service() for servlet [default] in context with path [/nitro-project-rest] threw exception 
java.lang.IllegalStateException: No WebApplicationContext found: no ContextLoaderListener or DispatcherServlet registered? 

这是我的问候控制器：

@Controller 
@RequestMapping(RESTConstants.SLASH + RESTConstants.GREETING + RESTConstants.SLASH) 
public class GreetingController { 

    private static final String TEMPLATE = "Hello, %s!"; 

    @RequestMapping(value = RESTConstants.SLASH + RESTConstants.HELLO, method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE) 
    @ResponseBody 
    public HttpEntity<Greeting> hello(@RequestParam(value = "message", required = false, defaultValue = "World") String message, UriComponentsBuilder builder) { 
     Greeting greeting = new Greeting(String.format(TEMPLATE, message)); 
     greeting.add(linkTo(methodOn(GreetingController.class).hello(message, builder)).withSelfRel()); 
     HttpHeaders responseHeaders = new HttpHeaders(); 
     responseHeaders.setLocation(builder.path(RESTConstants.SLASH + RESTConstants.GREETING + RESTConstants.SLASH + "hello").buildAndExpand().toUri()); 
     responseHeaders.add("Content-Type", "application/json; charset=utf-8"); 
     ResponseEntity<Greeting> responseEntity = new ResponseEntity<Greeting>(greeting, responseHeaders, HttpStatus.OK);   
     return responseEntity; 
    } 

} 

Answer 1

我错过了调度程序servlet！

与此文件

现在它的效果要好得多：

public class WebInit extends AbstractAnnotationConfigDispatcherServletInitializer { 

    private static Logger logger = LoggerFactory.getLogger(WebInit.class); 

    @Override 
    protected void customizeRegistration(ServletRegistration.Dynamic registration) { 
     registration.setInitParameter("dispatchOptionsRequest", "true"); 
     registration.setAsyncSupported(true); 
     registration.setLoadOnStartup(1); 
    } 

    @Override 
    protected Class<?>[] getRootConfigClasses() { 
     return new Class<?>[] { ApplicationConfiguration.class }; 
    } 

    @Override 
    protected Class<?>[] getServletConfigClasses() { 
     return new Class<?>[] { WebConfiguration.class }; 
    } 

    @Override 
    protected String[] getServletMappings() { 
     // The '/api/*' prefix is to allow a match of an .../api/... request to a controller mapping 
     // The '/' is to allow a match of a root request to a static resource 
     return new String[] { "/api/*", "/" }; 
    } 

    @Override 
    protected String getServletName() { 
     return CommonConstants.SERVLET_NAME; 
    } 

}