如何使用 Mule 中的盒子连接器获得 refresh_token

Question

我正在使用 Box 连接器的 3.0.0.201609092037 版本（最新版本），因为我没有找到任何文档或示例代码来获取刷新令牌，我自己写了流程来搞定。

我实现了使用连接器执行授权操作，然后我的意图是将请求发送到 Box API 到此 url: https://api.box.com/oauth2/token in order to get an access_token and also a refresh_token (I got the API info from here https://docs.box.com/reference#token).

问题是，一旦我的流程获得授权并且我得到 access_code，我用它发送到 Box 我总是收到这个：

{
  "error": "invalid_grant",
  "error_description": "The authorization code has expired"
}

我检查了所有的信息，我认为是好的，我期待的回复是：

{
    "access_token": "T9cE5asGnuyYCCqIZFoWjFHvNbvVqHjl",
    "expires_in": 3600,
    "restricted_to": [],
    "token_type": "bearer",
    "refresh_token": "J7rxTiWOHMoSC1isKZKBZWizoRXjkQzig5C6jFgCVJ9bUnsUfGMinKBDLZWP9BgR"
}

所以我将能够存储这些属性并在需要时刷新令牌。

我的流程如下：

这是我的 XML 定义：

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

<mule xmlns:dw="http://www.mulesoft.org/schema/mule/ee/dw" xmlns:scripting="http://www.mulesoft.org/schema/mule/scripting" xmlns:tls="http://www.mulesoft.org/schema/mule/tls" xmlns:json="http://www.mulesoft.org/schema/mule/json" xmlns:objectstore="http://www.mulesoft.org/schema/mule/objectstore" xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns:tracking="http://www.mulesoft.org/schema/mule/ee/tracking" xmlns:box="http://www.mulesoft.org/schema/mule/box" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
    xmlns:spring="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd
http://www.mulesoft.org/schema/mule/box http://www.mulesoft.org/schema/mule/box/current/mule-box.xsd
http://www.mulesoft.org/schema/mule/ee/tracking http://www.mulesoft.org/schema/mule/ee/tracking/current/mule-tracking-ee.xsd
http://www.mulesoft.org/schema/mule/objectstore http://www.mulesoft.org/schema/mule/objectstore/current/mule-objectstore.xsd
http://www.mulesoft.org/schema/mule/json http://www.mulesoft.org/schema/mule/json/current/mule-json.xsd
http://www.mulesoft.org/schema/mule/ee/dw http://www.mulesoft.org/schema/mule/ee/dw/current/dw.xsd
http://www.mulesoft.org/schema/mule/scripting http://www.mulesoft.org/schema/mule/scripting/current/mule-scripting.xsd
http://www.mulesoft.org/schema/mule/tls http://www.mulesoft.org/schema/mule/tls/current/mule-tls.xsd">
    <http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0" port="8081" doc:name="HTTP Listener Configuration" protocol="HTTPS">
        <tls:context>
            <tls:key-store type="jks" path="OBKeytore.jks" keyPassword="password" password="password"/>
        </tls:context>
    </http:listener-config>
    <box:config-with-oauth name="Box__OAuth_2_0" clientId="my_client_id" clientSecret="My_secret" doc:name="Box: OAuth 2.0">
        <box:oauth-callback-config domain="localhost" localPort="8081" remotePort="8081" path="callback" connector-ref="HTTP_Listener_Configuration"/>
        <box:oauth-store-config objectStore-ref="_defaultInMemoryObjectStore"/>
    </box:config-with-oauth>
    <objectstore:config name="ObjectStore__Connector" partition="BoxAccessToken"  persistent="true" doc:name="ObjectStore: Connector"/>
    <http:request-config name="HTTP_Request_Configuration" host="api.box.com" port="443" basePath="/oauth2/" doc:name="HTTP Request Configuration" protocol="HTTPS"/>
    <tls:context name="TLS_Context" doc:name="TLS Context">
        <tls:trust-store path="OBKeytore.jks" password="password" type="jks"/>
        <tls:key-store type="jks" path="OBKeystore.jks" keyPassword="password" password="password"/>
    </tls:context>
    <flow name="Authorize">
        <http:listener config-ref="HTTP_Listener_Configuration" path="/authorize" doc:name="HTTP"/>
        <box:authorize config-ref="Box__OAuth_2_0" doc:name="Box"/>
        <flow-ref name="GenerateAcessToken" doc:name="GenerateAcessToken"/>
    </flow>
    <flow name="GenerateAcessToken">
        <logger message="Acess Token: #[flowVars['_oauthVerifier']]" level="INFO" doc:name="Logger"/>
        <set-payload value="#[[
    'grant_type' :'authorization_code',
    'code':flowVars['_oauthVerifier'],
    'client_id':'my_client_id',
    'client_secret':'my_secret'
]]" doc:name="Set Payload"/>
        <http:request config-ref="HTTP_Request_Configuration" path="token" method="POST" doc:name="HTTP">
            <http:success-status-code-validator values="200,400"/>
        </http:request>
        <object-to-string-transformer doc:name="Object to String"/>
        <logger message="#[payload]" level="INFO" doc:name="Logger"/>
        <catch-exception-strategy doc:name="Catch Exception Strategy">
            <object-to-string-transformer doc:name="Object to String"/>
            <logger message="#[payload]" level="INFO" doc:name="Logger"/>
        </catch-exception-strategy>
    </flow>
</mule>

我不得不提一下，我已经尝试使用具有相同参数的 POSTMAN，替换代码（据我所知它的有效期为 30 秒）并获得相同的响应。

这里有更多信息：

Anypoint Studio 版本：6.1.1 服务器运行时：3.8.1 EE

Answer 1

听起来可能需要 HTTP 请求者的 OAuth 授权配置，正如 Mule 服务器试图访问属于 Box 用户并保存在 Box 服务器中的资源所描述的那样：https://docs.mulesoft.com/mule-user-guide/v/3.8/authentication-in-http-requests

http://mulesoft.github.io/box-connector/3.0.0/apidocs/box-apidoc.html#_oauth_2_0_server_to_server and this example of managing OAuth tokens 以 Box 为例，如果你还没有看过的话，可能值得一看。

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