获取请求仅适用于尾部斜杠(弹簧 REST 注释) [英] Get request only works with trailing slash (spring REST annotations)

问题描述

我有一个 Spring REST 控制器:

I have a Spring REST Controller:

@RestController
@RequestMapping(value = "/myresource")
public class MyResourceController {
  ...
}

使用 GET 请求方法:

With a GET request method:

@RequestMapping(method = GET, value = "/{value1}/{value2}/{value3}", produces = MediaType.APPLICATION_JSON_VALUE + ";charset=UTF-8")    
public ResponseEntity<MyResponseType> getMyResource(
  @ApiParam(value = "...",...)
  @PathVariable("value1") String value1,
  @ApiParam(value = "...",...)
  @PathVariable("value2") String value2,
  @ApiParam(value = "...",...)
  @PathVariable("value3") String value3) {
//...
}

我希望可以通过以下方式调用此方法:

I would expect this method to be callable with:

http://myserver:8080/myresource/value1/value2/value3

但它只能通过斜杠到达:

But it is only reachable with a trailing slash:

http://myserver:8080/myresource/value1/value2/value3/

为什么会这样或导致这种情况的原因是什么?

Why is that so or what is causing this?

Swagger 假设尾部没有斜杠，我现在无法使用 swagger 发送请求.

Swagger assumes there are no trailing slashes and I can't send a request with swagger now.

我该怎么做才能使第一个 URL 有效而第二个无效?

What can I do to only make the first URL work but not the second?

非常感谢您的评论和回答.

Thanks a lot in advance for your comments and answers.

编辑 2:

我发现如果没有斜线，value3 的信息是不完整的.value3 必须是电子邮件地址，但从最后一个点开始的所有内容都被切断了.因此，我收到的不是[e-mail]"，而是myemail@something".

I found out that without the slash the information of value3 is incomplete. value3 must be an email address but everything from the final dot is cut off. So instead of "[e-mail]" I am getting "myemail@something".

这解释了为什么我无法获得正确的结果(无内容和 HTTP 状态代码 404).但我仍然不明白为什么会发生这种情况.此外，如果我的电子邮件地址在顶级域(如 .com)中包含三个字母，则请求永远不会到达 GET 方法getMyResource"......

This explains why I can't get a proper result (no content and HTTP status code 404). But I still don't understand why this happens. Further than that, if I have an email address with three letters in the top level domain (like .com) the request never reaches the GET method "getMyResource" ....

我的 web.xml 看起来像这样:

Edited 1: My web.xml looks like that:

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

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/j2ee"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<display-name>(my) Services</display-name>
<filter>
    <filter-name>SetCharacterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
        <param-name>forceEncoding</param-name>
        <param-value>true</param-value>
    </init-param>
</filter>
<filter-mapping>
    <filter-name>SetCharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

<!-- Provide ServletContext -->
<listener>
    <listener-class>my.ServletContextUtils</listener-class>
</listener>

<!-- Expose request to current thread (required for session and request-scoping) -->
<listener>
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>

<servlet>
    <servlet-name>spring-mvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            WEB-INF/config/spring-mvc-servlet.xml
        </param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>spring-mvc</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

</web-app>

我的 spring-mvc-servlet.xml 看起来像这样:

And my spring-mvc-servlet.xml looks like that:

<?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:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"   xmlns:util="http://www.springframework.org/schema/util"
xmlns:env="http://my/schema"
xsi:schemaLocation="
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
    http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.1.xsd
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
    http://www.springframework.org/schema/util
    http://www.springframework.org/schema/util/spring-util-3.1.xsd
    http://my/schema
    http://my/schema/env-0.3.xsd">

<env:initialization />
<context:annotation-config />
<mvc:annotation-driven />
<mvc:default-servlet-handler/>
<context:component-scan base-package="my.myresource.restapi" />

<context:property-placeholder
    ignore-unresolvable="true"
    location="
        WEB-INF/config/${my.environment}/webapp.properties" />

<!-- Swagger -->

<!-- swagger config -->
<bean class="my.restapi.swagger.SwaggerConfig"/>

webapp.properties 包含的内容不多:

webapp.properties does not contain much:

swagger.include-pattern=/(?!api-docs|version).*

推荐答案

我在这里找到了答案:

Spring MVC @PathVariable 被截断

这似乎只发生在最后一个参数上，解决方案是对最后一个值使用正则表达式:

This seems to happen only with the last parameter and the solution is to use a regex for the last value:

@RequestMapping(method = GET, value = "/{value1}/{value2}/{value3:.+}"

这对我有用.

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