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OfficeDev / ews-java-api

A java client library to access Exchange web services. The API works against Office 365 Exchange Online as well as on premises Exchange.
MIT License
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InternetMessageHeaders data loss. I can't find 'Resent-From' #758

Closed godtrack closed 2 years ago

godtrack commented 2 years ago

I can find it in eml file, but I can't find it through EWS, why? service.loadPropertiesForItems(results, PropertySet.FirstClassProperties); InternetMessageHeader internetMessageHeader = item.getInternetMessageHeaders().find("Resent-From"); internetMessageHeader is null

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godtrack commented 2 years ago

This is my original email 高考前一天，沅江市政府领导到考点开展考前督查.eml.txt

godtrack commented 2 years ago

I found a solution in the official documentation. https://docs.microsoft.com/zh-cn/exchange/client-developer/web-service-reference/internetmessageheader ExtendedPropertyDefinition PR_TRANSPORT_MESSAGE_HEADERS = new ExtendedPropertyDefinition(0x007D, MapiPropertyType.String); service.loadPropertiesForItems(findResults, new PropertySet(BasePropertySet.FirstClassProperties, PR_TRANSPORT_MESSAGE_HEADERS));

ExtendedPropertyCollection extendedProperties = item.getExtendedProperties(); OutParam<String> outParam = new OutParam<>(); extendedProperties.tryGetValue(String.class, PR_TRANSPORT_MESSAGE_HEADERS, outParam); String param = outParam.getParam(); This contains all the attributes of the mail