如何解决JavaMail 输出在 Boundary
目前我遇到了一个我真的不明白的问题。我在 OSGI-Plugin 中有一个类，它也包含 javax.mail-1.6.2.jar 作为 osgi-plugins lib 文件夹内的捆绑类路径。当我在我的机器上使用简单的 main-method 运行代码时，一切正常。邮件包含所有部分并正确结束。但是当我在第三方应用程序中运行插件时，JavaMail 在第一个边界后突然停止输出。没有引发异常，没有日志消息，它只是结束输出并继续。
Date: Sun,13 Jun 2021 10:05:26 +0200 (CEST)
From: noreply@localhost.com
Reply-To: noreply@localhost.com
To: test@nodomain.com
Message-ID: <126209092.01623571526344.JavaMail.LOCALHOST$@LOCALHOST>
Subject: =?utf-8?Q?#web#_[TEST]=C2=A0Tesfall_zu_?=
=?utf-8?Q?javamail_(test@nodomain.com)?=
MIME-Version: 1.0
Content-Type: multipart/mixed;
boundary="----=_Part_0_185595348.1623571526344"
就是这样。它只是空的。
我已经减少了错误来源，保存时输出的是相同的（截断的）邮件。所以它不是 smtp 网关或任何 smtp 设置。现在我没有任何想法了，下一步该往哪里看。我无法在加载它的第三方应用程序上调试该类（Oracle Java SE 1.8 HotspotVM）。有没有人知道可能是什么原因或如何缩小原因？
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Properties;
import javax.mail.Multipart;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMessage.RecipientType;
import javax.mail.internet.MimeMultipart;
public class DocumentToSmtp {
public void process() throws Exception {
String mailhost = "localhost";
String port = "25";
//Get SMTP output to logger
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final String utf8 = StandardCharsets.UTF_8.name();
try (PrintStream ps = new PrintStream(baos,true,utf8)) {
try {
boolean authification = false;
String prot = "smtp";
Properties props = System.getProperties();
if (mailhost != null) {
props.put("mail." + prot + ".host",mailhost);
props.put("mail." + prot + ".port",port);
}
props.put("mail." + prot + ".auth",authification);
Session session = Session.getInstance(props,null);
session.setDebug(true);
session.setDebugOut(ps);
MimeMessage msg = new MimeMessage(session);
String to = "test@nodomain.com";
msg.addRecipients(RecipientType.TO,InternetAddress.parse(to,false));
msg.addFrom(InternetAddress.parse("noreply@localhost.com",false));
String subject = "#web# [TEST] Tesfall zu javamail (test@nodomain.com)";
msg.setSubject(subject,"utf-8");
String replyto = "noreply@localhost.com";`
//originally the class contained multiple attachment as pdfs,but
List<MimeBodyPart> bodies = new ArrayList<>();
// create and fill the first message part
MimeBodyPart mbp1 = new MimeBodyPart();
String text = "<!DOCTYPE html><html style=\"margin: 0; font-family: Arial; font-size: 14px\">\r\n"
+ " <head>\r\n"
+ " <meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\">\r\n"
+ " <title>EMail</title>\r\n"
+ " <style type=\"text/css\"> /* common */\r\n"
+ " html,body {\r\n"
+ " margin: 0;\r\n"
+ " font-family: Arial;\r\n"
+ " font-size: 14px;\r\n"
+ " }\r\n"
+ " </style>\r\n"
+ " </head>\r\n"
+ " <body style=\"margin: 0; font-family: Arial; font-size: 14px\">\r\n Guten Tag!"
+ " </body>\r\n"
+ " </html>";
mbp1.setHeader("Content-Transfer-Encoding","8bit");
mbp1.setContent(text,"text/html; charset=utf-8"); //5
bodies.add(mbp1);
//add the parts to multi-part
Multipart mp = new MimeMultipart();
for (MimeBodyPart mbp : bodies) {
mp.addBodyPart(mbp);
}
msg.setContent(mp);
msg.setSentDate(new Date());
msg.writeTo(new FileOutputStream(new File("%TEMP%/test.eml")));
Transport.send(msg);
} finally {
//Print logmessages.
String data = baos.toString(utf8);
System.out.println(data);
}
}
}
}
OSGI 清单
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.9.6
Created-By: 1.8.0_60-b27 (Oracle Corporation)
Bundle-ClassPath: .,commons-codec-1.3.jar,commons-codec-1.9.jar,commons-lang3-3.3.1.jar,commons-httpclient-3.1.jar,commons-io-2.4.jar,commons-logging-1.1.3.jar,javax.mail-1.6.2.jar
Bundle-Version: 42324
Bundle-ManifestVersion: 2
Bundle-SymbolicName: DocumentPlugins
Export-Service: de.documentworkflow.plugins.DocumentToSMTP
Import-Package: javax.activation,javax.crypto,javax.crypto.spec,javax.imageio,javax.imageio.plugins.jpeg,javax.imageio.stream,javax.net,javax.net.ssl,javax.xml.bind,javax.xml.bind.annotation,javax.xml.datatype,javax.xml.namespace,javax.xml.soap,javax.xml.transform,javax.xml.ws,javax.xml.ws.handler.soap
Embed-Dependency: commons-codec;scope=compile|runtime
Built-Date: 2020-06-13_07-07-54
Built-By: jenkins
Implementation-Version: 1706
Svn-Revision: 42323
Bundle-Vendor: test
Class-Path: posy-documentworkflow-interface-api-1
.0.42323.jar commons-codec-1.9.jar trove-3.0.1.jar log4j-1.2.15.jar m
ail-1.4.3.jar commons-net-3.3.jar jsch-0.1.53.jar guava-11.0.2.jar jd
om.jar xsom.jar relaxngDatatype.jar javax.mail-1.6.2.jar
Require-Capability: osgi.ee
最好的问候。
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