我有这个应用程序以前工作得很好。
我试图在很长一段时间后运行它并且它没有按预期运行。
对于不那么准确的错误问题感到抱歉。
这是一个暴露控制器的Spring REST应用程序，它不是Spring MVC应用程序。
让我感到困惑的第一件事是，在调试器中启动它不会让它停在WebConfiguration类的方法中的所有断点处停止：
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());
}
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");
}
}
调试器不会停留在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。
该应用程序似乎开始很好：
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"]
我使用Maven命令启动应用程序：
mvn clean install tomcat7:run
但是发送任何请求，例如curl -H "Accept:application/json" --user nsn@nsn.com:******* http://localhost:8080/nitro-project-rest/greeting?message=Steph总是会给我以下错误：
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;
}
}
答案 0 :(得分：0)
我错过了调度程序servlet！
现在有了这个文件，效果会更好：
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;
}
}