Spring MVC映射问题

  • Z时代
  • 2024-01-10
  • 分类：问答

我有一个简单的Spring

MVC应用程序。但是，我似乎可以正确设置requestMappings。奇怪的是，日志显示该URL已映射到正确的控制器，但是Dispatcher似乎无法在运行时找到它。我们欢迎所有的建议：

日志记录

INFO: Mapped URL path [/app/index] onto handler     [com.noisyair.whatisayis.web.MainController@420a52f]
Jan 11, 2010 2:14:21 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/app/index.*] onto handler [com.noisyair.whatisayis.web.MainController@420a52f]
Jan 11, 2010 2:14:21 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/app/index/] onto handler [com.noisyair.whatisayis.web.MainController@420a52f]
Jan 11, 2010 2:14:21 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/app/tags/{tag}] onto handler [com.noisyair.whatisayis.web.SearchByTagController@7b3cb2c6]
Jan 11, 2010 2:14:21 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/app/tags/{tag}.*] onto handler [com.noisyair.whatisayis.web.SearchByTagController@7b3cb2c6]
Jan 11, 2010 2:14:21 PM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler
INFO: Mapped URL path [/app/tags/{tag}/] onto handler [com.noisyair.whatisayis.web.SearchByTagController@7b3cb2c6]
Jan 11, 2010 2:14:21 PM org.springframework.web.servlet.FrameworkServlet initServletBean
INFO: FrameworkServlet 'wisi': initialization completed in 237 ms
Jan 11, 2010 2:14:21 PM org.apache.catalina.core.StandardContext start
INFO: Container org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/] has already been started
Jan 11, 2010 2:14:41 PM org.springframework.web.servlet.DispatcherServlet noHandlerFound
WARNING: No mapping found for HTTP request with URI [/app/index] in DispatcherServlet with name 'wisi'

Web.xml文件

<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- The Spring MVC framework handles all of this stuff.  Just pass it along -->
<servlet>
    <servlet-name>wisi</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet </servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>wisi</servlet-name>
    <url-pattern>/app/*</url-pattern>
</servlet-mapping>

控制器类：

@Controller
public class MainController {
@Autowired
private LearningEntryService learningEntryService;
public LearningEntryService getLearningEntryService() {
    return learningEntryService;
}
public void setLearningEntryService(LearningEntryService learningEntryService) {
    this.learningEntryService = learningEntryService;
}
@RequestMapping(value = "/app/index", method = RequestMethod.GET)
public ModelAndView sayHello(HttpServletRequest request,
        HttpServletResponse response) throws ServletException, IOException {
    Map<String, Object> model = new HashMap<String, Object>();
    List<LearningEntry> le = learningEntryService.getLearningEntries();
    model.put("learningEntries", le);
    return new ModelAndView("main", model);
}
}

回答：

您不应该在@RequestMapping和中都复制“ / app” <url-pattern>。也就是说，您的sayHello现在映射到“ /

app / app / index”。你可以写

@RequestMapping(value = "/index", method = RequestMethod.GET)

（或者，您可以DefaultAnnotationHandlerMapping在配置中声明bean并将其allwaysUseFullPath属性设置true为覆盖默认行为）

以上是 Spring MVC映射问题 的全部内容， 来源链接： utcz.com/qa/412327.html

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