Stack Overflow上有很多与此错误有关的问题,我已经尝试过最相关的解决方案而没有成功。这是我的问题。
我正在尝试映射此请求:/user/{userId}
其中userId
是一个字符串。我可以使用以下带注释的类和Spring配置来处理对/user
的GET请求:
UserController.java
@Controller
@RequestMapping("/user")
public class UserController {
private static final Logger log = Logger.getLogger(UserController.class.getName());
@RequestMapping(method=RequestMethod.GET)
public @ResponseBody String info() {
log.debug("mapping succeeded!");
return "<H1>foo</H1>";
}
}
幅/ WEB-INF /用户servlet.xml中
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="com.example"/>
</beans>
的web.xml
<servlet>
<servlet-name>user</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>user</servlet-name>
<url-pattern>/user/*</url-pattern>
</servlet-mapping>
然后我请求/user
2011-01-14 15:47:41,942 DEBUG [com.example.rest.UserController] (http-11080-1) mapping succeeded!
现在做一些有趣的事情。我将代码更改为以下内容:
@Controller
@RequestMapping("/user")
public class UserController {
private static final Logger log = Logger.getLogger(UserController.class.getName());
@RequestMapping(value="/{userId}", method=RequestMethod.GET)
public @ResponseBody String info(@PathVariable String userId) {
log.debug("mapping succeeded! userId=" + userId);
return "<H1>foo</H1>";
}
}
我有可怕的No mapping found...
(main) Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@36598d00: defining beans [userController,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor]; root of factory hierarchy
(main) instantiating UserController
(main) Mapped URL path [/user/*] onto handler 'userController'
(main) Mapped URL path [/user/*.*] onto handler 'userController'
(main) Mapped URL path [/user/*/] onto handler 'userController'
...
(http-11080-1) No mapping found for HTTP request with URI [/user] in DispatcherServlet with name 'user'
(http-11080-1) No mapping found for HTTP request with URI [/user/foo] in DispatcherServlet with name 'user'
(http-11080-1) No mapping found for HTTP request with URI [/user/] in DispatcherServlet with name 'user'
我做错了什么?
答案 0 :(得分:9)
通常不会将调度程序servlet映射到的实际servlet路径包含在请求映射中。请求映射相对于调度程序。在退化的第一种情况下,调度员足够聪明,可以弄清楚你的意思,但是当你开始添加分解的路径变量时。您应该可以使用当前的设置访问/user/user/foo
并获取您要查找的内容。