add test

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

@@ -4,9 +4,9 @@ import cn.hutool.core.builder.Builder;
 import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.io.IORuntimeException;
 import cn.hutool.core.io.IoUtil;
+import cn.hutool.core.text.StrUtil;
 import cn.hutool.core.util.ArrayUtil;
 import cn.hutool.core.util.ObjUtil;
-import cn.hutool.core.text.StrUtil;
 
 import javax.activation.DataHandler;
 import javax.activation.DataSource;
@@ -248,41 +248,6 @@ public class Mail implements Builder<MimeMessage> {
 		return setAttachments(attachments);
 	}
 
-	/**
-	 * 增加附件或图片，附件使用{@link DataSource} 形式表示，可以使用{@link FileDataSource}包装文件表示文件附件
-	 *
-	 * @param attachments 附件列表
-	 * @return this
-	 * @since 4.0.9
-	 */
-	public Mail setAttachments(final DataSource... attachments) {
-		if (ArrayUtil.isNotEmpty(attachments)) {
-			final Charset charset = this.mailAccount.getCharset();
-			MimeBodyPart bodyPart;
-			String nameEncoded;
-			try {
-				for (final DataSource attachment : attachments) {
-					bodyPart = new MimeBodyPart();
-					bodyPart.setDataHandler(new DataHandler(attachment));
-					nameEncoded = attachment.getName();
-					if (this.mailAccount.isEncodefilename()) {
-						nameEncoded = InternalMailUtil.encodeText(nameEncoded, charset);
-					}
-					// 普通附件文件名
-					bodyPart.setFileName(nameEncoded);
-					if (StrUtil.startWith(attachment.getContentType(), "image/")) {
-						// 图片附件，用于正文中引用图片
-						bodyPart.setContentID(nameEncoded);
-					}
-					this.multipart.addBodyPart(bodyPart);
-				}
-			} catch (final MessagingException e) {
-				throw new MailException(e);
-			}
-		}
-		return this;
-	}
-
 	/**
 	 * 增加图片，图片的键对应到邮件模板中的占位字符串，图片类型默认为"image/jpeg"
 	 *
@@ -333,6 +298,42 @@ public class Mail implements Builder<MimeMessage> {
 		}
 	}
 
+	/**
+	 * 增加附件或图片，附件使用{@link DataSource} 形式表示，可以使用{@link FileDataSource}包装文件表示文件附件
+	 *
+	 * @param attachments 附件列表
+	 * @return this
+	 * @since 4.0.9
+	 */
+	public Mail setAttachments(final DataSource... attachments) {
+		if (ArrayUtil.isNotEmpty(attachments)) {
+			final Charset charset = this.mailAccount.getCharset();
+			MimeBodyPart bodyPart;
+			String nameEncoded;
+			try {
+				for (final DataSource attachment : attachments) {
+					bodyPart = new MimeBodyPart();
+					bodyPart.setDataHandler(new DataHandler(attachment));
+					nameEncoded = attachment.getName();
+					if (this.mailAccount.isEncodefilename()) {
+						nameEncoded = InternalMailUtil.encodeText(nameEncoded, charset);
+					}
+					// 普通附件文件名
+					bodyPart.setFileName(nameEncoded);
+					if (StrUtil.startWith(attachment.getContentType(), "image/")) {
+						// 图片附件，用于正文中引用图片
+						bodyPart.setContentID(nameEncoded);
+						bodyPart.setDisposition(MimeBodyPart.INLINE);
+					}
+					this.multipart.addBodyPart(bodyPart);
+				}
+			} catch (final MessagingException e) {
+				throw new MailException(e);
+			}
+		}
+		return this;
+	}
+
 	/**
 	 * 设置字符集编码
 	 *

hutool-extra/src/main/java/cn/hutool/extra/template/engine/enjoy/EnjoyEngine.java

@@ -71,7 +71,7 @@ public class EnjoyEngine implements TemplateEngine {
 		if(null == this.engine){
 			init(TemplateConfig.DEFAULT);
 		}
-		if (ObjUtil.equal(ResourceMode.STRING, this.resourceMode)) {
+		if (ObjUtil.equals(ResourceMode.STRING, this.resourceMode)) {
 			return EnjoyTemplate.wrap(this.engine.getTemplateByString(resource));
 		}
 		return EnjoyTemplate.wrap(this.engine.getTemplate(resource));

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

@@ -66,4 +66,15 @@ public class MailTest {
 		final Properties props = account.getSmtpProps();
 		Assert.assertEquals("true", props.getProperty("mail.debug"));
 	}
+
+	@Test
+	@Ignore
+	public void sendHtmlWithPicsTest() {
+		HashMap<String, InputStream> map = new HashMap<>();
+		map.put("abc", FileUtil.getInputStream("D:/test/abc.png"));
+		map.put("abcd",FileUtil.getInputStream("D:/test/def.png"));
+
+		MailUtil.sendHtml("loolly@aliyun.com", "测试", "<h1>邮件来自Hutool测试</h1><img src=\"cid:abc\"/><img src=\"cid:abcd\"/>",
+				map);
+	}
 }