java 使用Microsoft exchange ews接口发送邮件报错

2015-08-13 09:32:06 660 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

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Debian 7 + DavMail：老旧VPS上稳定对接Exchange的协议桥接方案 DavMail 是一种轻量级协议网关，核心原理是将 Microsoft Exchange 的 EWS 或 Outlook Anywhere 接口实时翻译为标准 IMAP/SMTP/CalDAV 协议，实现跨平台邮件客户端（如 Thunderbird、Apple Mail）对 Exchange 邮箱的无缝访问。其技术价值在于绕过 Windows 依赖与 OAuth2 认证复杂性，以传统用户名密码直连方式换取高稳定性与低运维成本。典型应用场景包括内网 Exchange 环境下的 Linux 桌面办公、老旧 VP 阅读详情

我编写了一个简单的代码，总是报错：

java.lang.NullPointerException

	at microsoft.exchange.webservices.data.Strings.<clinit>(Strings.java:223)

	at microsoft.exchange.webservices.data.EwsXmlReader.internalReadElement(EwsXmlReader.java:119)

	at microsoft.exchange.webservices.data.EwsXmlReader.readStartElement(EwsXmlReader.java:620)

	at microsoft.exchange.webservices.data.ServiceRequestBase.readSoapHeader(ServiceRequestBase.java:565)

	at microsoft.exchange.webservices.data.ServiceRequestBase.readResponse(ServiceRequestBase.java:525)

	at microsoft.exchange.webservices.data.SimpleServiceRequestBase.readResponse(SimpleServiceRequestBase.java:176)

	at microsoft.exchange.webservices.data.SimpleServiceRequestBase.internalExecute(SimpleServiceRequestBase.java:49)

	at microsoft.exchange.webservices.data.MultiResponseServiceRequest.execute(MultiResponseServiceRequest.java:144)

	at microsoft.exchange.webservices.data.ExchangeService.internalCreateItems(ExchangeService.java:464)

	at microsoft.exchange.webservices.data.ExchangeService.createItem(ExchangeService.java:535)

	at microsoft.exchange.webservices.data.Item.internalCreate(Item.java:215)

	at microsoft.exchange.webservices.data.EmailMessage.internalSend(EmailMessage.java:125)

	at microsoft.exchange.webservices.data.EmailMessage.send(EmailMessage.java:253)

	at Test.main(Test.java:23)

Exception in thread "main" microsoft.exchange.webservices.data.EWSHttpException: Connection not established

	at microsoft.exchange.webservices.data.HttpClientWebRequest.throwIfConnIsNull(HttpClientWebRequest.java:394)

	at microsoft.exchange.webservices.data.HttpClientWebRequest.getResponseHeaders(HttpClientWebRequest.java:280)

	at microsoft.exchange.webservices.data.ExchangeServiceBase.processHttpResponseHeaders(ExchangeServiceBase.java:1045)

	at microsoft.exchange.webservices.data.SimpleServiceRequestBase.internalExecute(SimpleServiceRequestBase.java:58)

	at microsoft.exchange.webservices.data.MultiResponseServiceRequest.execute(MultiResponseServiceRequest.java:144)

	at microsoft.exchange.webservices.data.ExchangeService.internalCreateItems(ExchangeService.java:464)

	at microsoft.exchange.webservices.data.ExchangeService.createItem(ExchangeService.java:535)

	at microsoft.exchange.webservices.data.Item.internalCreate(Item.java:215)

	at microsoft.exchange.webservices.data.EmailMessage.internalSend(EmailMessage.java:125)

	at microsoft.exchange.webservices.data.EmailMessage.send(EmailMessage.java:253)

	at Test.main(Test.java:23)

下面是我的代码

import java.net.URI;



import microsoft.exchange.webservices.data.EmailMessage;

import microsoft.exchange.webservices.data.ExchangeCredentials;

import microsoft.exchange.webservices.data.ExchangeService;

import microsoft.exchange.webservices.data.ExchangeVersion;

import microsoft.exchange.webservices.data.MessageBody;

import microsoft.exchange.webservices.data.WebCredentials;





public class Test {

	public static void main(String[] args) throws Exception {

		ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2010_SP1); //新建server版本

		ExchangeCredentials credentials = new WebCredentials("benli", "12345"); //自己的用户名和密码

		service.setCredentials(credentials);

		service.setUrl(new URI("https://192.168.20.220/EWS/Exchange.asmx")); //mail.TESTMAIL.com 改为自己的邮箱

		EmailMessage msg= new EmailMessage(service);

		msg.setSubject("Hello world!"); //主题

		msg.setBody(MessageBody.getMessageBodyFromText("Sent using the EWS Managed API.")); //内容

		msg.getToRecipients().add("ben@com"); //收件人

		msg.getCcRecipients().add("victorluo@com"); //抄送人

		//msg.getAttachments().addFileAttachment("D:\\Downloads\\EWSJavaAPI_1.2\\EWSJavaAPI_1.2\\Getting started with EWS Java API.RTF"); //附件

		msg.send(); //发送

	}

}