如何获取webscript url参数

我有一个webscript,在其中我尝试获取两个参数 filename content http://localhost:8080/alfresco/service/fr/starxpert/workflows-repository/create-save-workflow-files?filename=testFileName="testFileName"&&content="testContent" 我发现这个错误:

The Web Script /alfresco/service/fr/starxpert/workflows-repository/create-save-workflow-files has responded with a status of 404 - Not Found.

404 Description:    Requested resource is not available.

Message:    06280086 Script url /fr/starxpert/workflows-repository/create-save-workflow-files does not map to a Web Script.

createAndSaveWorkflowFile.get.desc.xml:

<webscript> 
  <shortname>Creation and save new workflow file</shortname> 
  <description>create an workflow JSON file and save it into StarXpert Workflow repository</description>
  <url>/fr/starxpert/workflows-repository/create-save-workflow-files/{filename}/{content}</url> 
  <format default="json">extension</format> 
  <authentication>user</authentication> 
  <family>StarXpert</family>
</webscript>

var fileName=args.filename;
var properties=args.content;
logger.log(fileName);
model.filename=fileName;
model.properties=properties;

createAndSaveWorkflowFile.get.json.ftl:

{
    "arguments":[
                    "fileName":"${fileName}",
                    "properties":"${properties}"
                ]   
}

你能告诉我我做错了什么吗?或者举个例子,告诉我如何使用url上的两个参数调用webscript,然后在webscript上得到这些参数。