调用接口地址：重要 http://xxxx/sites/pwa/_vti_bin/PSI/ProjectServer.svc
Header 三个必要参数：
其中SOAPAction写死就行，如果是online就要用SharePointOnlineCredentials授权，Server版用NetworkCredential授权
Post数据包含调用接口相关参数：
<?xml version=‘1.0‘ encoding=‘UTF-8‘?>
<soap:Envelope xmlns:xsi=‘http://www.w3.org/2001/XMLSchema-instance‘ xmlns:xsd=‘http://www.w3.org/2001/XMLSchema‘
xmlns:soap=‘http://schemas.xmlsoap.org/soap/envelope/‘>
<soap:Body>
<StatusingReadStatusApprovalsForProjectForGridJson2 xmlns=‘http://schemas.microsoft.com/office/project/server/webservices/PWA/‘>
<gridSerializerArgs>
<SortColumnNames></SortColumnNames>
<SortColumnOrders></SortColumnOrders>
<GroupColumnNames></GroupColumnNames>
<ShowTimeWithDates>false</ShowTimeWithDates>
<PagingInfo>
<string>FirstVisible:40</string>
</PagingInfo>
<RequestType>0</RequestType>
</gridSerializerArgs>
<fromDate>‘\/Date(1534032000000)\/‘</fromDate>
<toDate>‘\/Date(1541980800000)\/‘</toDate>
<durationFormat>5</durationFormat>
<workFormat>2</workFormat>
<filter>0</filter>
</StatusingReadStatusApprovalsForProjectForGridJson2>
</soap:Body>
</soap:Envelope>
返回数据如下图：