---getValues(获取实际值,通过id获取的)
var project_id=$("#project_name").combobox('getValues');
---getText(获取文本框值,name显示什么就是什么)
var project_name=$("#project_name").combobox('getText');
---url拼接参数(name)和变量(id)
针对参数来说的话,是个字符串。所以加 ‘ 单引号 ’
url:"/wcm/actions/document_library/upload_file.do?actionId=mswcm_document_library_upload_file&project_id="+project_id'&project_name='+project_name,