Question

我是Mule ESB的新手，并尝试向REST服务发送帖子请求。请求的主体是String形式，请求应该是x-www-form-urlencoded。我将有效负载设置为我的参数并将请求发送到REST服务，但我得到一个例外：

Failed to invoke REST service "http://username:password@192.168.10.252/api/rest/session/login.json". Message payload is of type: String

我的其余网址是：（＃[restURL]）$ {dms.host} /api/rest/session/login.json

我的参数是（设置为有效负载＃[restBody]）：username = user＆amp; password = pass

<sub-flow name="RESTrequestToDMS" doc:name="RESTrequestToDMS" processingStrategy="synchronous">
    <set-variable variableName="originalMessage" value="#[payload]" doc:name="Backup original message"/>
    <logger message="#[restBody]" level="INFO" doc:name="Logger"/>
    <choice doc:name="Choice">
        <when expression="restHTTPmethod == 'POST'">
            <processor-chain>    
                <set-payload value="#[restBody]" doc:name="Set Payload"/>           
                <http:rest-service-component httpMethod="POST" serviceUrl="http://${dms.user}:${dms.pass}@#[restURL]"></http:rest-service-component>
            </processor-chain>
        </when>
        <when expression="restHTTPmethod == 'GET'">
            <processor-chain>
                <http:rest-service-component httpMethod="GET" serviceUrl="http://${dms.user}:${dms.pass}@#[restURL]?#[restBody]"></http:rest-service-component>
            </processor-chain>
        </when>
        <otherwise>
            <processor-chain>
                <logger message="Unknown http method type is provided! " level="ERROR" doc:name="Logger"/>
            </processor-chain>
        </otherwise>
    </choice>
    <json:json-to-object-transformer returnClass="java.util.Map" doc:name="JSON to Object"/>
    <echo-component doc:name="Echo"/>
    <set-variable variableName="RESTResponse" value="#[payload]" doc:name="set RESTResponse"/>
    <set-payload value="#[flowVars['originalMessage']]" doc:name="Restore Original Message"/>
</sub-flow>

有人可以帮我解决这个问题吗？

提前多多感谢。

注意：根据David的回复更新。

------------------- UPDATE --------------------

所以现在，出于测试目的，我已经修改了这样的流程：

<set-payload value="#[restBody]" doc:name="Set Payload"/>
<custom-transformer class="de.mfg.osii.http.StringToURIParametersMapTransformer" doc:name="String To URI Parameters"/>  
<http:rest-service-component httpMethod="POST" serviceUrl="http://${dms.user}:${dms.pass}@#[restURL]">
    <http:requiredParameter key="username" value="#[payload.get('username')]" />
    <http:requiredParameter key="password" value="#[payload.get('password')]" />
</http:rest-service-component>

所以现在有效载荷是：{username = user，password = pass} 但是现在当我尝试运行它时，我收到以下错误：

1. Failed to invoke REST service "http://user:pass@192.168.10.252/api/rest/session/login.json". Message payload is of type: LinkedHashMap (org.mule.transport.http.components.RestServiceException)

更新：上述问题（例外）刚刚通过添加值为“application / x-www-form-urlencoded”的消息属性“Content-Type”来解决。 / p>

下面的最后一部分对我来说仍然是个谜。）

另一件事是，正如我在David回答的评论中所述，我是否可以自适应方式为其余组件添加所需的参数？为了更清楚，我不想为每个不同的请求创建不同的流。我在有效负载中有参数映射，所以我想迭代它们并将它们放在所需的参数中。这样的事情可能吗？

提前多多感谢！

------------------- UPDATE --------------------

所以，我修改了我的流程并使用了大卫的建议。但是，现在，我收到HTTP 405错误（不允许方法）。但我确定我使用正确的内容类型发布到正确的地址。这是什么原因？有人有想法吗？

进入此流程的我的有效负载是一个字符串（网址编码参数），例如 - ＆gt;

的sessionId = 9eub9gm7k7oc1ub81dhef6t46q＆安培;！XML =％3CObjectList％3E％3CFolderObject％3E％3CAddToFolder％20RefType％3D％22Path％22％20ClassName％3D％22FolderObject％22％3E％3C％5BCDATA％5B％2FfolderPath％5D％5D ％3E％3C％2FAddToFolder％3E％3CName％3E％3C％！5BCDATA％5Baaa％5D％5D％3E％3C％2FName％3E％3CDescription％3E％3C％！5BCDATA％5BRequests％20from％20user％20aaa％20顷％20stored％20英寸％20this％20folder％5D％5D％3E％3C％2FDescription％3E％3CNoErrorIfExist％2F％3E％3C％2FFolderObject％3E％3C％2FObjectList％3E

<flow name="RESTrequestToDMS" doc:name="RESTrequestToDMS" processingStrategy="synchronous">
    <set-variable variableName="originalMessage" value="#[payload]" doc:name="Backup original message"/>
    <choice doc:name="Choice">
        <when expression="restHTTPmethod == 'POST'">
            <processor-chain>
                <set-payload value="#[restBody]" doc:name="Set Payload"/>
                <logger message="The payload before http post is: #[message.payload]" level="INFO" doc:name="Logger"/>
                <http:outbound-endpoint  exchange-pattern="request-response" doc:name="HTTP" address="http://#[restURL]"  user="${dms.user}" password="${dms.pass}" contentType="application/x-www-form-urlencoded">
                </http:outbound-endpoint>
            </processor-chain>
        </when>
        <when expression="restHTTPmethod == 'GET'">
            <processor-chain>
                <http:outbound-endpoint method="GET"  exchange-pattern="request-response" doc:name="HTTP" address="http://#[restURL]?#[restBody]"  user="${dms.user}" password="${dms.pass}" contentType="application/x-www-form-urlencoded">
        </http:outbound-endpoint>
            </processor-chain>
        </when>
        <otherwise>
            <processor-chain>
                <logger message="Unknown http method type is provided! " level="ERROR" doc:name="Logger"/>
            </processor-chain>
        </otherwise>
    </choice>
    <echo-component doc:name="Echo"/>
    <choice doc:name="Choice">
        <when expression="payload != null &amp;&amp; payload != empty &amp;&amp; payload != ''">
            <processor-chain>
                <json:json-to-object-transformer doc:name="JSON to Object" returnClass="java.util.Map"/>
                <set-variable variableName="RESTResponse" value="#[payload]" doc:name="set RESTResponse"/>
            </processor-chain>
        </when>
        <otherwise>
            <processor-chain>
                <logger message="The payload is null or empty! HTTP response code is: #[message.inboundProperties['http.status']]" level="INFO" doc:name="Logger"/>
                <set-variable variableName="RESTResponse" value="#[message.inboundProperties['http.status']]" doc:name="Set HTTP Status Code"/>
            </processor-chain>
        </otherwise>
    </choice>
    <set-payload value="#[flowVars['originalMessage']]" doc:name="Restore Original Message"/>
</flow>

Answer 1

以下是使用rest-service-component传递参数进行URL编码的方法：

<http:rest-service-component httpMethod="POST"
    serviceUrl="http://${dms.user}:${dms.pass}@#[restURL]">
    <http:requiredParameter key="username" value="user" />
    <http:requiredParameter key="password" value="pass" />
</http:rest-service-component>

具有URL表单编码主体的Mule ESB HTTP POST请求

1 个答案: