java - 为什么spring警告消息是“org.springframework.web.servlet.PageNotFound”？

Question

我尝试 spring 3 mvc 这个包是 org.spring.test 和代码是

@Controller
@RequestMapping("/welcome")
public class WelcomeController {

private Logger logger = org.slf4j.LoggerFactory.getLogger(WelcomeController.class);


@RequestMapping(method = RequestMethod.GET)
public void welcome() {
    logger.info("Welcome!");
}
@RequestMapping("test1")
public void test1() {
    logger.info("test1!");
}
@RequestMapping("test2")
public void test2() {
    logger.info("test2!");
}
}

web.xml 是:

<servlet>
    <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            /WEB-INF/spring/*.xml
        </param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

最后一个 mvc.xml 是

<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/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-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="org.spring.test" />
<!-- Configures support for @Controllers -->
<mvc:annotation-driven />

<!-- Resolves view names to protected .jsp resources within the /WEB-INF/views directory -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/views/"/>
    <property name="suffix" value=".jsp"/>
</bean>

当我使用“mvn jetty:run”命令并写入http://localhost:8080/springdemo/welcome时 是

 "HTTP ERROR 404
Problem accessing /springdemo/WEB-INF/views/welcome.jsp. Reason:
 NOT_FOUND" 

控制台消息是:

INFO : org.spring.test.WelcomeController - Welcome!
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/springdemo/WEB-INF/views/welcome.jsp] in DispatcherServlet with name 'Spring MVC Dispatcher Servlet'

为什么？

Answer 1

您似乎缺少/WEB-INF/views/test.jsp。这是真的吗？

您正在请求/test URI，它未映射到您的 Controller 类(我认为它映射到/welcome)。 Spring 使用InternalResourceViewResolver 来满足您的请求。它需要前缀+“测试”+后缀。这就是您最终得到/WEB-INF/views/test.jsp 的方式。

确保您有该 JSP 或更改您的 Controller 映射。

更新: 好吧，你改变了问题。但是你有/springdemo/WEB-INF/views/welcome.jsp 吗？