添加自定义属性，发送邮件可以配置其他属性，如mail.smtp.ssl.socketFactory

hutool-extra/src/main/java/cn/hutool/extra/mail/MailAccount.java

@@ -1,11 +1,14 @@
 package cn.hutool.extra.mail;
 
 import cn.hutool.core.util.CharsetUtil;
+import cn.hutool.core.util.ObjectUtil;
 import cn.hutool.core.util.StrUtil;
 import cn.hutool.setting.Setting;
 
 import java.io.Serializable;
 import java.nio.charset.Charset;
+import java.util.HashMap;
+import java.util.Map;
 import java.util.Properties;
 
 /**
@@ -36,6 +39,9 @@ public class MailAccount implements Serializable {
 
 	public static final String[] MAIL_SETTING_PATHS = new String[]{"config/mail.setting", "config/mailAccount.setting", "mail.setting"};
 
+	// 允许使用自定义属性
+	private final Map<String, Object> customProperty = new HashMap<>();
+
 	/**
 	 * SMTP服务器域名
 	 */
@@ -467,6 +473,29 @@ public class MailAccount implements Serializable {
 		return this;
 	}
 
+	/**
+	 * 获取自定义属性列表
+	 *
+	 * @return 自定义参数列表
+	 */
+	public Map<String, Object> getCustomProperty() {
+		return customProperty;
+	}
+
+	/**
+	 * 设置自定义属性，如mail.smtp.ssl.socketFactory
+	 *
+	 * @param key   属性名
+	 * @param value 属性值
+	 * @return this
+	 */
+	public MailAccount setCustomProperty(String key, Object value) {
+		if (ObjectUtil.isNotNull(key) && ObjectUtil.isNotNull(value)) {
+			this.customProperty.put(key, value);
+		}
+		return this;
+	}
+
 	/**
 	 * 获得SMTP相关信息
 	 *
@@ -507,11 +536,16 @@ public class MailAccount implements Serializable {
 			p.put(SOCKET_FACTORY_FALLBACK, String.valueOf(this.socketFactoryFallback));
 			p.put(SOCKET_FACTORY_PORT, String.valueOf(this.socketFactoryPort));
 			// issue#IZN95@Gitee，在Linux下需自定义SSL协议版本
-			if(StrUtil.isNotBlank(this.sslProtocols)){
+			if (StrUtil.isNotBlank(this.sslProtocols)) {
 				p.put(SSL_PROTOCOLS, this.sslProtocols);
 			}
 		}
 
+		// 补充自定义属性，允许自定属性覆盖已经设置的值
+		for (String key : customProperty.keySet()) {
+			p.put(key, customProperty.get(key));
+		}
+
 		return p;
 	}
 

hutool-extra/src/test/java/cn/hutool/extra/mail/MailAccountTest.java

@@ -1,21 +1,55 @@
 package cn.hutool.extra.mail;
 
+import com.sun.mail.util.MailSSLSocketFactory;
 import org.junit.Assert;
 import org.junit.Test;
 
+import java.security.GeneralSecurityException;
+
 /**
  * 默认邮件帐户设置测试
- * @author looly
  *
+ * @author looly
  */
 public class MailAccountTest {
-	
+
 	@Test
 	public void parseSettingTest() {
 		MailAccount account = GlobalMailAccount.INSTANCE.getAccount();
 		account.getSmtpProps();
-		
+
 		Assert.assertNotNull(account.getCharset());
 		Assert.assertTrue(account.isSslEnable());
 	}
+
+	/*
+	  测试案例：使用QQ邮箱、AOL邮箱，如果不改SocketFactory实例，会报错（unable to find valid certification path to requested target），
+	  hutool mail中仅提供了'mail.smtp.socketFactory.class'属性，但是没提供'mail.smtp.ssl.socketFactory'属性
+	  参见 com.sun.mail.util.SocketFetcher.getSocket(java.lang.String, int, java.util.Properties, java.lang.String, boolean)
+
+	  已经测试通过
+	 */
+	@Test
+	public void customPropertyTest() throws GeneralSecurityException {
+		MailAccount mailAccount = new MailAccount();
+		mailAccount.setFrom("xxx@xxx.com");
+		mailAccount.setPass("xxxxxx");
+
+		mailAccount.setHost("smtp.aol.com");
+
+		// 使用其他配置属性
+		MailSSLSocketFactory sf = new MailSSLSocketFactory();
+		sf.setTrustAllHosts(true);
+		mailAccount.setCustomProperty("mail.smtp.ssl.socketFactory", sf);
+
+		mailAccount.setAuth(true);
+		mailAccount.setSslEnable(true);
+
+		Mail mail = Mail.create(mailAccount).setTos("xx@xx.com");
+		mail.setTitle("邮箱验证");
+		mail.setContent("您的验证码是：<h3>2333</h3>");
+		mail.setHtml(true);
+
+		mail.send();
+	}
 }