我不明白为什么如果我使用RestController注释将类声明为服务,如下所示:
@RestController("/registration")
public class RegistrationService {
@RequestMapping(value="/",
produces="application/json")
public String initializeSession(Model model){
return "{\"success\":1}";
}
}
当我提出像
这样的请求时我在控制台中获得了404状态:
No mapping found for HTTP request with URI [/SpringRest/registration/] in DispatcherServlet with name 'dispatcherServlet'
一切正常如果我改变@RestController("/registration")
与
@Controller
@RequestMapping("/registration")
并在方法声明上方添加@ResponseBody。
这是我的配置:
的web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<display-name>SpringRest</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/application-config.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--
- Servlet that dispatches request to registered handlers (Controller implementations).
-->
<servlet>
<servlet-name>dispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/mvc-config.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
调度
<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<mvc:annotation-driven />
<!-- Uncomment and your base-package here: -->
<context:component-scan
base-package="it.reply.rest"/>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- Example: a logical view name of 'showMessage' is mapped to '/WEB-INF/jsp/showMessage.jsp' -->
<property name="prefix" value="/WEB-INF/view/"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
答案 0 :(得分:3)
RestController
的声明如下:
@Target(value=TYPE)
@Retention(value=RUNTIME)
@Documented
@Controller
@ResponseBody
public @interface RestController
它包括@Controller
和@ResponseBody
,但不包括@RequestMapping
。所以你需要添加它。所以以下内容应该有效:
@RestController
@RequestMapping("/registration")
答案 1 :(得分:1)
正确用法是:
@RestController
@RequestMapping("/registration")
value
的{{1}}是组件名称。
来自RestController (Spring Framework 4.3.9.RELEASE API):
public abstract String value
该值可能表示对逻辑组件名称的建议 如果是自动检测的组件,则将其转换为Spring bean。
答案 2 :(得分:0)
@RestController
不包括网址映射,因此您需要@Requestmapping
以及
@RestController
@RequestMapping("/registration")