今天完成的事情：调用邮件API接口，注册图片上传之类的信息。
明天计划的事情：继续做图片存储
遇到的问题：感觉自己看阿里云文档挺乱的，不能怎么抓到重点和自己需要的，做起来挺迷茫的。
收获：

sendMail

public class sendMail {

    public static boolean sendMail(String maile) {

        DefaultProfile profile = DefaultProfile.getProfile("cn-hangzhou", "<accessKeyId>", "<accessSecret>");
        IAcsClient client = new DefaultAcsClient(profile);

        SingleSendMailRequest request = new SingleSendMailRequest();
        request.setRegionId("cn-hangzhou");
        request.setAccountName("我的发信地址");
        request.setAddressType(0);//地址类型。取值:0:为随机账号1:为发信地址
        request.setReplyToAddress(false);
        request.setToAddress(maile);
        request.setSubject("邮件主题");

        try {
            SingleSendMailResponse response = client.getAcsResponse(request);
            System.out.println(new Gson().toJson(response));
        } catch (ServerException e) {
            e.printStackTrace();
        } catch (ClientException e) {
            System.out.println("ErrCode:" + e.getErrCode());
            System.out.println("ErrMsg:" + e.getErrMsg());
            System.out.println("RequestId:" + e.getRequestId());
            return false;
        }
        return true;
    }
}