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oracle ilearning邮件发送的配置修改

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1.背景介绍:公司10多年一直做oracle ilearning的实施,oracle是不提供源码的,我们只能靠自己反编译、继承等一些手段来实现客户化,系统发送邮件功能有一个配置文件可配置,但是要求不验证邮箱密码通过javamail发送邮件。之前我们面对的客户主要的都是一些大型企业客户,他们一般都有自己的邮件服务器,在邮件服务器上做一下设置就行,但是目前一些客户一般都使用网易、腾讯等企业邮箱,这些供应商一般不会提供免验证发送邮件的。这就需要我们解决这个问题,有两个方案:一、自己搭建一个邮件服务器。二、修改oracle ilearning原始发送邮件功能的代码。

 

2.进入正题:我这边使用Apache的James mail自己搭建过邮件服务器。但自己搭建邮件代价较大,这里说一下如何修改原始功能代码使用javamail发送邮件。

oracle ilearning邮件发送功能的配置在 ~WEB-INF/ilearning.properties文件中

# *******************************************************************

#Example: MAIL_HOST=smtp02.us.oracle.com
MAIL_HOST=smtp.163.com

#ADMIN_EMAIL: The email address where system generated emails will be sent from
#Recommendation: set to valid email address
#Default setting: nobody@<domain>
#Example: ADMIN_EMAIL=admin@mycompany.com
#This email account is used for forgot password emails.  Bounced emails
#will be returned to this address.
ADMIN_EMAIL=admin@163.com

 MAIL_HOST对应的是邮件服务器发送地址,ADMIN_EMAIL是发件人。

 

那么oracle ilearning 原始代码是怎么调用的呢?没有源码,只有通过简单的找回密码功能一步一步一层一层的找。终于使用强大的MyEclipse反编译工具插件(附件可下载),找到邮件发送类:oracle.ila.common.collaboration.email.EmailUtil。以下是反编译出来的部分代码

//发送失败后重复尝试发送的次数
public static final int RESEND_EMAIL = 5;

//构造函数
public EmailUtil() {
	Properties props = setMailHost();
	this.session = Session.getDefaultInstance(props, null);
	this.msg = new MimeMessage(this.session);
}

//设置smtp邮件发送地址配置
private Properties setMailHost(){
     Properties _props = new Properties();
     _props.put("mail.smtp.host", ILAProperties.getMailHost());
 
     return _props;
}

//具体的发送逻辑代码
private void transportMessageToMailer(boolean forceSend)
     throws SendFailedException, MessagingException{
     SendFailedException lastError = null;
     int count = 0;
     for (int i = 0; i < 5; ++count) {
       lastError = null;
       try {
         Transport.send(this.msg);
       }
       catch (SendFailedException es) {
         Address[] validUnsent = es.getValidUnsentAddresses();
         Address[] vailidSent = es.getValidSentAddresses();
         Address[] InvalidAddress = es.getInvalidAddresses();
 
         if ((validUnsent == null) && (validUnsent == null) && (InvalidAddress == null))
         {
           lastError = es;
         }
         else
         {
           if ((forceSend) && (validUnsent != null))
           {
             Transport.send(this.msg, validUnsent);
             throw new SendFailedException(es.getMessage(), es, validUnsent, null, es.getInvalidAddresses());
           }
 
           throw es;
         }
       }
       ++i;
     }
 
     if (lastError != null) {
       Logger.error("EmailUtil ->transportMessageToMailer: SMTP Connection Failed - Have tried  " + Integer.toString(count) + " times to send message");
       throw lastError;
     }
   }

 以上反编译的结果肯定会和源码有些差别的,很明显的错误需要修改一下即可。那么我们就来说说,如何修改可实现配置验证邮箱密码发送邮件。

第一步,检查反编译出来的代码是否有错,解决明显的错误,可能大家会忽视下面一个错误:

private void transportMessageToMailer(boolean forceSend)
     throws SendFailedException, MessagingException
   {
     SendFailedException lastError = null;
     int count = 0;
    //发编译的结果常量直接变成了具体的值 for (int i = 0; i < 5; ++count) {
     for (int i = 0; i < RESEND_EMAIL; ++count) {
       lastError = null;
       try {
         Transport.send(this.msg);
	//这里很明显漏了一个return ,如果不加return那么系统会一次性发送5封相同的邮件。下面加上
		return;
       }
       catch (SendFailedException es) {
         Address[] validUnsent = es.getValidUnsentAddresses();
         Address[] vailidSent = es.getValidSentAddresses();
         Address[] InvalidAddress = es.getInvalidAddresses();
 
         if ((validUnsent == null) && (validUnsent == null) && (InvalidAddress == null))
         {
           lastError = es;
         }
         else
         {
           if ((forceSend) && (validUnsent != null))
           {
             Transport.send(this.msg, validUnsent);
             throw new SendFailedException(es.getMessage(), es, validUnsent, null, es.getInvalidAddresses());
           }
 
           throw es;
         }
       }
       ++i;
     }
 
     if (lastError != null) {
       Logger.error("EmailUtil ->transportMessageToMailer: SMTP Connection Failed - Have tried  " + Integer.toString(count) + " times to send message");
       throw lastError;
     }
   }

第二步,自己创建添加一个javamail的验证类

import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;

/**
 * @author Chan Lewis
 * @version 2014-3-24
 */
public class MyAuthenticator extends Authenticator{
	String userName = null;
	String password = null;

	public MyAuthenticator() {
	}

	public MyAuthenticator(String username, String password) {
		this.userName = username;
		this.password = password;
	}

	protected PasswordAuthentication getPasswordAuthentication() {
		return new PasswordAuthentication(userName, password);
	}

}

 第三步,修改邮件的初始化配置

//构造函数
public EmailUtil(){
  Properties props = setMailHost();
  //是否验证密码,可在ilearning.properties中添加配置
  String isValidateStr = ILAProperties.getProperty("SMTP_AUTH");
  if(null!=isValidateStr && "true".equalsIgnoreCase(isValidateStr)){  //如果验证密码
	  //添加初始化配置
          props.put("mail.smtp.port", "25");
	  props.put("mail.smtp.auth", "true");
	  MyAuthenticator authenticator = new MyAuthenticator(ILAProperties.getProperty("ADMIN_EMAIL"), ILAProperties.getProperty("ADMIN_PASSWORD"));
	  this.session = Session.getDefaultInstance(props, authenticator);
  }else{ //如果不验证密码
	  this.session = Session.getDefaultInstance(props, null);
  }
  this.msg = new MimeMessage(this.session);
}

 ilearning.properties中添加相关配置SMTP_AUTH 、ADMIN_PASSWORD

# *******************************************************************

#Example: MAIL_HOST=smtp02.us.oracle.com
MAIL_HOST=smtp.163.com
SMTP_AUTH=true

#ADMIN_EMAIL: The email address where system generated emails will be sent from
#Recommendation: set to valid email address
#Default setting: nobody@<domain>
#Example: ADMIN_EMAIL=admin@mycompany.com
#This email account is used for forgot password emails.  Bounced emails
#will be returned to this address.
ADMIN_EMAIL=admin@163.com
ADMIN_PASSWORD=password

#******************************************************************************

OK到此为止就修改完成了。这样修改之后,既可以使用javamail不验证发送邮件,也可以验证用户名密码发送邮件,具体可在ilearning.properties文件里面配置。

 

3.问题答疑:有些新手可能还会问,我这边反编译后怎么替换原始功能呢?

答:原始的功能除oracle官方发布的补丁之外,一般都打包在ilearning.jar中,主要看你现在使用的web服务器,一般买了oracle ilearning的基本都是使用oracle IAS服务器的,所以把自己修改的java文件生成类文件放到对应的目录即可。另外一种办法是通过打包技术把生成的类文件重新打包到ilearning.jar(不建议使用)。

 

 

 

 

 

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