Apache James数据库存储用户信息的密码加密问题及解决方案

<users-store>
  <!-- 注释掉原来文件存储的方式 -->
  <!--
  <repository name="LocalUsers" class="org.apache.james.userrepository.UsersFileRepository">
	 <destination URL="file://var/users/"/>
  </repository>
	 -->
  <!-- 改为数据库的方式 -->
  <repository name="LocalUsers" class="org.apache.james.userrepository.JamesUsersJdbcRepository" destinationURL="db://maildb/mail_users">
	 <sqlFile>file://conf/sqlResources.xml</sqlFile>
  </repository>
</users-store>

<data-source name="maildb" class="org.apache.james.util.dbcp.JdbcDataSource">
	<driver>dm.jdbc.driver.DmDriver</driver>
	<dburl>jdbc:dm://127.0.0.1:5236/test_mail</dburl>
		<user>test</user>
	<password>test123</password>
	<max>50</max>
</data-source>

CREATE TABLE "MAIL_USERS"
(
	"USERNAME" VARCHAR2(64) NOT NULL,
	"PWDHASH" VARCHAR2(50),
	"PWDALGORITHM" VARCHAR2(20),
	"USEFORWARDING" NUMBER(1,0),
	"FORWARDDESTINATION" VARCHAR2(255),
	"USEALIAS" NUMBER(1,0),
	"ALIAS" VARCHAR2(255),
	PRIMARY KEY("USERNAME")
);
COMMENT ON TABLE "MAIL_USERS" IS 'James邮件用户';
COMMENT ON COLUMN "MAIL_USERS"."PWDALGORITHM" IS '加密方式，默认SHA';
COMMENT ON COLUMN "MAIL_USERS"."PWDHASH" IS '加密后的密码';
COMMENT ON COLUMN "MAIL_USERS"."USERNAME" IS '邮箱帐号';

package com.mail;
import javax.mail.MessagingException;
import javax.mail.internet.MimeUtility;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class DigestUtil {
    public static String digestString(String pass, String algorithm )
            throws NoSuchAlgorithmException  {
        MessageDigest md;
        ByteArrayOutputStream bos;
        try {
            md = MessageDigest.getInstance(algorithm);
            byte[] digest = md.digest(pass.getBytes("iso-8859-1"));
            bos = new ByteArrayOutputStream();
            OutputStream encodedStream = MimeUtility.encode(bos, "base64");
            encodedStream.write(digest);
            return bos.toString("iso-8859-1");
        } catch (IOException ioe) {
            throw new RuntimeException("Fatal error: " + ioe);
        } catch (MessagingException me) {
            throw new RuntimeException("Fatal error: " + me);
        }
    }
    private DigestUtil() {}
}

import java.security.Security;
import java.security.Provider;
import java.security.Provider.Service;
public class ListAlgorithms {
    public static void main(String[] args) {
        for(Provider provider: Security.getProviders()) {
            for(Service service: provider.getServices()) {
                if ("MessageDigest".equals(service.getType())) {
                    System.out.println(service.getAlgorithm());
                }
            }
        }
    }
}

import javax.mail.*;
import javax.mail.internet.*;
import java.util.*;
public class SendEmail {
    public static void main(String[] args) {
        String host = "smtp.example.com"; // SMTP服务器地址
        String username = "your-username"; // 用户名
        String password = "your-password"; // 密码
        Properties props = new Properties();
        props.put("mail.smtp.host", host);
        props.put("mail.smtp.auth", "true");
        Session session = Session.getInstance(props, new Authenticator() {
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
            }
        });
        try {
            Message message = new MimeMessage(session);
            message.setFrom(new InternetAddress("from@example.com"));
            message.setRecipients(Message.RecipientType.TO, InternetAddress.parse("to@example.com"));
            message.setSubject("Email Subject");
            message.setText("Email Body");
            Transport.send(message);
            System.out.println("Email sent successfully");
        } catch (MessagingException e) {
            throw new RuntimeException("Error sending email", e);
        }
    }
}