我尝试按照本教程创建一个带有JSON输出的DSS：https://docs.wso2.com/display/EI620/Using+JSON+with+Data+Services
它可以很好地处理一个简单的查询，我可以毫无问题地格式化输出。
现在，我尝试添加一个输入参数来按ID过滤记录，但它对我不起作用。我的REST，如教程中所述，是：GET http：//{server_host}/services/Promemoria_PROMEMORIA_Tools/getCount/2
答案是：

Error processing GET request for : /services/Promemoria_PROMEMORIA_Tools/getCount/2</p><p>DS Code: INCOMPATIBLE_PARAMETERS_ERROR
Nested Exception:-
javax.xml.stream.XMLStreamException: DS Fault Message: Error in 'CallQuery.extractParams', cannot find parameter with type:query-param name:idp
DS Code: INCOMPATIBLE_PARAMETERS_ERROR
Source Data Service:-
Name: Promemoria_PROMEMORIA_Tools
Location: /Promemoria_PROMEMORIA_Tools.dbs
Description: Tool per permettere ad Amenta di inserire le pratiche fatte a mano.
Default Namespace: http://ws.wso2.org/dataservice
Current Request Name: _getgetcount_idp
Current Params: {}

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我也试过：GET http：//{server_host}/services/Promemoria_PROMEMORIA_Tools/getCount？idp=2但这是错误的，因为无法识别操作。
我在查询定义中把idp的属性defaultValue=“3”放在查询定义中，它就开始工作了..但是它忽略了REST中的值。
怎么了？这是我的安全局代码

<data name="Promemoria_PROMEMORIA_Tools" transports="http https local">
   <description>Tool per permettere di inserire le pratiche fatte a mano.</description>
   <config enableOData="false" id="OracleServizio_Promemoria2">
      <property name="carbon_datasource_name">OracleServizio_Promemoria2</property>
   </config>
   <query id="getByCF" useConfig="OracleServizio_Promemoria2">
      <sql>SELECT ID_ABILITAZIONE, ID_SERVIZIO, DESCR_SERVIZIO, CF_UTENTE, ID_CANALE_NOTIFICA, CANALE_NOTIFICA, ID_CONTATTO, CONTATTO, CANALE_ACQ, DATA_ACQ, CF_ACQ, PROTOCOLLO, DATA_PROT, PROV_UFF FROM SERVIZIO_PROMEMORIA.SE_MI_SCORDO_ABIL_SPORTELLO a where a.CF_UTENTE = :cf union all SELECT ID_ABILITAZIONE, ID_SERVIZIO, DESCR_SERVIZIO, CF_UTENTE, ID_CANALE_NOTIFICA, CANALE_NOTIFICA, ID_CONTATTO, CONTATTO, CANALE_ACQ, DATA_ACQ, CF_ACQ, PROTOCOLLO, DATA_PROT, PROV_UFF FROM SERVIZIO_PROMEMORIA.SE_MI_SCORDO_ABIL b where b.CF_UTENTE = :cf and b.CF_ACQ &lt;&gt; 'BATCH'</sql>
      <result escapeNonPrintableChar="true" outputType="json">{&#xd;    "list": {&#xd;      "item": [{&#xd;         "id": "$ID_ABILITAZIONE",&#xd;          "service": {&#xd;               "id": "$ID_SERVIZIO",&#xd;              "info": "$DESCR_SERVIZIO"&#xd;          },&#xd;         "cfUser": "$CF_UTENTE",&#xd;            "channel": {&#xd;               "id": "$ID_CANALE_NOTIFICA",&#xd;               "info": "$CANALE_NOTIFICA"&#xd;         },&#xd;         "address": {&#xd;               "id": "$ID_CONTATTO",&#xd;              "info": "$CONTATTO"&#xd;            }&#xd;      }]&#xd; }&#xd;}</result>
      <param name="cf" sqlType="STRING"/>
   </query>
   <query id="getCount" useConfig="OracleServizio_Promemoria2">
      <sql>SELECT ID_SERVIZIO, DESCR_SERVIZIO, ID_CANALE_NOTIFICA, CANALE_NOTIFICA, count(*) as recno FROM SERVIZIO_PROMEMORIA.SE_MI_SCORDO_ABIL_SPORTELLO a where a.ID_SERVIZIO=:idp group by ID_SERVIZIO, DESCR_SERVIZIO, ID_CANALE_NOTIFICA, CANALE_NOTIFICA</sql>
      <param name="idp" paramType="SCALAR" sqlType="INTEGER"/>
      <result escapeNonPrintableChar="true" outputType="json">{&#xd;    "list": {&#xd;      "item": [{&#xd;         "items": "$recno",&#xd;         "service": {&#xd;               "id": "$ID_SERVIZIO",&#xd;              "info": "$DESCR_SERVIZIO"&#xd;          },&#xd;         "channel": {&#xd;               "id": "$ID_CANALE_NOTIFICA",&#xd;               "info": "$CANALE_NOTIFICA"&#xd;         }&#xd;      }]&#xd; }&#xd;}</result>
   </query>
   <resource method="GET" path="getByCF/{cf}">
      <call-query href="getByCF">
         <with-param name="cf" query-param="cf"/>
      </call-query>
   </resource>
   <resource method="GET" path="getCount/{idp}">
      <call-query href="getCount">
         <with-param name="idp" query-param="idp"/>
      </call-query>
   </resource>
</data>

型
Roberto