diff --git a/api/src/main/java/cn/crap/service/tool/EmailService.java b/api/src/main/java/cn/crap/service/tool/EmailService.java
index fd91c0d7..30343a8f 100644
--- a/api/src/main/java/cn/crap/service/tool/EmailService.java
+++ b/api/src/main/java/cn/crap/service/tool/EmailService.java
@@ -1,9 +1,7 @@
 package cn.crap.service.tool;
 
 import cn.crap.dto.MailBean;
-import cn.crap.enu.SettingEnum;
 import cn.crap.service.IEmailService;
-import cn.crap.beans.Config;
 import cn.crap.utils.Aes;
 import cn.crap.utils.IConst;
 import cn.crap.utils.ISetting;
@@ -18,6 +16,7 @@
 import javax.mail.MessagingException;
 import javax.mail.internet.MimeMessage;
 import java.io.UnsupportedEncodingException;
+import java.util.Objects;
 
 @Service
 public class EmailService implements IEmailService {
@@ -35,7 +34,7 @@ public void sendMail(MailBean mailBean) throws UnsupportedEncodingException, Mes
 		String fromName = settingCache.get(ISetting.S_TITLE).getValue();
 		MimeMessage mimeMessage = mailSenderService.createMimeMessage();
 		MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage, true, "UTF-8");
-		messageHelper.setFrom(mailSenderService.getUsername(), fromName); 
+		messageHelper.setFrom(Objects.requireNonNull(mailSenderService.getUsername()), fromName);
 		messageHelper.setSubject(mailBean.getSubject());  
 		messageHelper.setTo(mailBean.getToEmail());  
 		messageHelper.setText(mailBean.getContext(), true);// html: true
@@ -49,7 +48,7 @@ public boolean sendMail(String subject, String toEmail, String context) {
 			MimeMessage mimeMessage = mailSenderService.createMimeMessage();
 			MimeMessageHelper messageHelper;
 			messageHelper = new MimeMessageHelper(mimeMessage, true, "UTF-8");
-			messageHelper.setFrom(mailSenderService.getUsername(), fromName); 
+			messageHelper.setFrom(Objects.requireNonNull(mailSenderService.getUsername()), fromName);
 			messageHelper.setSubject(subject);  
 			messageHelper.setTo(toEmail);  
 			messageHelper.setText(context, true);// html: true 
@@ -63,12 +62,12 @@ public boolean sendMail(String subject, String toEmail, String context) {
 	}
 	
 	@Override
-	public void sendRegisterEmail(String eamil, String id) throws UnsupportedEncodingException, MessagingException{
+	public void sendRegisterEmail(String email, String id) throws UnsupportedEncodingException, MessagingException{
 		String code =  Aes.encrypt(id);
 		String domain = Tools.getUrlPath() + "/user/validateEmail.do?i=" + code;
 		MailBean mailBean = new MailBean();
-		mailBean.setContext( getMtml(eamil, "注册邮箱验证", "点击验证邮箱：<a href=\""+domain+"\">"+domain+"</a>"));
-		mailBean.setToEmail(eamil);
+		mailBean.setContext( getMtml(email, "注册邮箱验证", "点击验证邮箱：<a href=\""+domain+"\">"+domain+"</a>"));
+		mailBean.setToEmail(email);
 		mailBean.setSubject("注册邮箱验证-开源API接口管理系统");
 		sendMail(mailBean);
         logger.warn(mailBean.getContext());
@@ -76,28 +75,25 @@ public void sendRegisterEmail(String eamil, String id) throws UnsupportedEncodin
 	}
 	
 	@Override
-	public void sendFindPwdEmail(String eamil) throws UnsupportedEncodingException, MessagingException{
+	public void sendFindPwdEmail(String email) throws UnsupportedEncodingException, MessagingException{
 		MailBean mailBean = new MailBean();
 		String code = Tools.getChar(6);
-		mailBean.setContext( getMtml(eamil, "找回密码", "邮件验证码为："+code));
-		mailBean.setToEmail(eamil);
+		mailBean.setContext( getMtml(email, "找回密码", "邮件验证码为："+code));
+		mailBean.setToEmail(email);
 		mailBean.setSubject("找回密码-开源API接口管理系统");
 		sendMail(mailBean);
-		stringCache.add(IConst.CACHE_FINDPWD+ eamil, code);
+		stringCache.add(IConst.CACHE_FINDPWD+ email, code);
 	}
 	
-	private String getMtml(String eamil, String title, String content){
-		StringBuffer sb = new StringBuffer();
-		sb.append("<div style=\"position:relative;width:400px;margin:0 auto; background:#f7f7f7;color:#999999; font-size:14px;line-height:36px;\">");
-		sb.append("<div style=\"height:60px; border-bottom:2px solid #f82c1d;padding:10px;\" >");
-		sb.append("<div style=\"float:left;margin-left:10px; line-height:60px;font-size:18px;font-weight:bold;color:#555;width:360px;height:60px;overflow:hidden;text-align:left;\">");
-		sb.append( title );
-		sb.append("</div></div><div style=\"padding:20px;min-height:260px;white-space: pre-wrap;word-wrap: break-word;\">");
-		sb.append(content);
-		sb.append("</div><div style=\"padding:20px;text-align:right;margin-top:30px;\">");
-		sb.append("<a style=\"color:#f82c1d;\" href=\"http://api.crap.cn?sj="
-				+ System.currentTimeMillis() + "\">本网站由CrapApi提供技术与支持</a>");
-		sb.append("<br></div></div>");
-		return sb.toString();
+	private String getMtml(String email, String title, String content){
+		return "<div style=\"position:relative;width:400px;margin:0 auto; background:#f7f7f7;color:#999999; font-size:14px;line-height:36px;\">" +
+				"<div style=\"height:60px; border-bottom:2px solid #f82c1d;padding:10px;\" >" +
+				"<div style=\"float:left;margin-left:10px; line-height:60px;font-size:18px;font-weight:bold;color:#555;width:360px;height:60px;overflow:hidden;text-align:left;\">" +
+				title +
+				"</div></div><div style=\"padding:20px;min-height:260px;white-space: pre-wrap;word-wrap: break-word;\">" +
+				content +
+				"</div><div style=\"padding:20px;text-align:right;margin-top:30px;\">" +
+				"<a style=\"color:#f82c1d;\" href=\"http://api.crap.cn?sj=" + System.currentTimeMillis() + "\">本网站由CrapApi提供技术与支持</a>" +
+				"<br></div></div>";
 	}
 }