当路径变量包含 (.) 时，@ResponseBody 不起作用

Question

我将电子邮件 ID 作为路径变量发送到服务器：

@RequestMapping(value = "/resetPassword/{email:.+}", method = RequestMethod.GET)
public @ResponseBody MyResponse resetPassword(HttpServletRequest request, @PathVariable("email") String email) 
{
    MyResponse res = new MyResponse();
    res.setMsg("some Text");
    return res;
}

我通过 jQuery 调用该方法为：

var email = $("#fpusername").val();
$.ajax({
    type : "GET",
    url : "./useraccount/resetPassword/" + email,
    dataType : "json",
    async : true,
    success : function(data) {
        alert(data.msg);
    }
});

当我将 myname@gmail 作为 email 值发送时，同样的方法有效，但在发送 myname@gmail.com

时出现以下错误

406 [The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers]

Answer 1

您是否在 web.xml 中映射了 url 模式？如果不是，您必须以这种方式映射 url 以接受您的 url 通过 spring:

有效

<servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>*.com</url-pattern>
</servlet-mapping>

Answer 2

doc 使用等效示例警告此陷阱

By default Spring MVC automatically performs ".*" suffix pattern matching so that a controller mapped to /person is also implicitly mapped to /person.*. This allows indicating content types via file extensions, e.g. /person.pdf, /person.xml, etc. A common pitfall however is when the last path segment of the mapping is a URI variable, e.g. /person/{id}. While a request for /person/1.json would correctly result in path variable id=1 and extension ".json", when the id naturally contains a dot, e.g. /person/joe@email.com the result does not match expectations. Clearly here ".com" is not a file extension.

在决定响应的内容类型时，Spring 使用所谓的 PPA 策略（路径、参数、接受 header）。在这里，您的 .com 被视为路径（扩展名），并尝试解析基于它的表示，因此您的例外。你可以采取两条路来解决这个问题。

要么将 Spring 配置为仅使用已注册的后缀，例如在 XML

<mvc:annotation-driven>
    <mvc:path-matching registered-suffixes-only="true" />
</mvc:annotation-driven>

文档和等效的 java 配置可用 here

或者，如果这对您来说是可行的解决方案，请关闭路径匹配，例如

<mvc:annotation-driven content-negotiation-manager="contentNegotiationManager" />

<bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
    <property name="favorPathExtension" value="false" />
    <property name="mediaTypes" >
        <value>
            json=application/json
            xml=application/xml
        </value>
    </property>
</bean>

文档和等效的 java 配置可用 here

当路径变量包含 (.) 时，@ResponseBody 不起作用

when path variable contains a (.) then @ResponseBody is not working

jquery

spring

spring-mvc

jackson