Question

我正在阅读Spring MVC教程，并试图让@PathVariable注释工作。

当我明确命名路径变量时，我的代码运行良好：

@RequestMapping(value = "/{first}/{last}", method = RequestMethod.GET)
public ModelAndView doSomething(@PathVariable("first") String first, @PathVariable("last") String last) {
    ModelAndView model = new ModelAndView("home");      
    model.addObject("message","HI " + first + " " + last);
    return model;
}

但是，当我尝试使用PathVariable的映射时，我收到错误400：客户端发送的请求在语法上是不正确的。

@RequestMapping(value = "/{first}/{last}", method = RequestMethod.GET)
public ModelAndView doSomething(@PathVariable Map<String,String> pathVars) {
    ModelAndView model = new ModelAndView("home");
    String first = pathVars.get("first");
    String last = pathVars.get("last");
    model.addObject("message","HI " + first + " " + last);
    return model;
}

这两次我都使用完全相同的网址，而且我希望这两种网址都有相同的行为。

我理解为了让这个工作起来，我必须将<mvc:annotation-driven/>添加到我的上下文xml中。但这似乎没有什么作用。

这就是我的servlet-context.xml的样子：

<?xml version="1.0" encoding="UTF-8"?>

<beans:beans xmlns="http://www.springframework.org/schema/mvc"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:beans="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    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">

<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
    <context:component-scan base-package="net.mydomain.springmvctest" />
    <mvc:annotation-driven/>


    <!-- Enables the Spring MVC @Controller programming model -->
    <annotation-driven />

    <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
    <resources mapping="/resources/**" location="/resources/" />

    <!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
    <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <beans:property name="prefix" value="/WEB-INF/views/" />
        <beans:property name="suffix" value=".jsp" />
    </beans:bean>

</beans:beans>

Answer 1

稍微解决了这个问题，看起来使用更新版本的Spring解决了这个问题。

我最初使用3.1.1.RELEASE，这是创建Spring MVC项目时STS默认的内容。我将pom改为4.0.0.RELEASE，一切正常。

@PathVariable客户端发送的请求仅在使用Map时在语法上不正确

1 个答案: