Spring mvc+oss存储多文件上传实现SSO单点登录模板管理

之前给大家介绍了sso的相关知识点和集成方案，考虑到每个系统所属行业的不同，这边针对于不同行业做了一些统一的sso单点登录界面模板，使用fileupload多文件上传+OSS阿里云存储方案。

（企业架构源码可以加求球：三五三六二四七二五九）

1. 阿里云oss存储Utils

public class AliyunUtils {

    private static AliyunUtils aliyun;
    private AliyunUtils() {

    }

    public static synchronized AliyunUtils getInstance(){
        if(aliyun==null){
            aliyun=new AliyunUtils();
        }
        return aliyun;
    }

    /**
     * 上传byte数组
     * @param fileByte
     * @param fileKey
     */
    public void uploadByte(byte[] fileByte, String fileKey){
        // 创建OSSClient实例
        OSSClient ossClient = new OSSClient(CloudConstant.ENDPOINT, CloudConstant.ACCESSKEYID, CloudConstant.ACCESSKEYSECRET);
        // 上传byte数组
        ossClient.putObject(CloudConstant.BUCKET, fileKey, new ByteArrayInputStream(fileByte));
        // 关闭client
        ossClient.shutdown();
    }

    /**
     * 上传文件流
     * @param inputStream
     * @param fileKey
     */
    public void uploadInputStream(InputStream inputStream, String fileKey){
        // 创建OSSClient实例
        OSSClient ossClient = new OSSClient(CloudConstant.ENDPOINT, CloudConstant.ACCESSKEYID, CloudConstant.ACCESSKEYSECRET);
        // 上传文件流
        ossClient.putObject(CloudConstant.BUCKET, fileKey, inputStream);
        // 关闭client
        ossClient.shutdown();
    }

    /**
     * 删除文件
     * @param fileKey
     */
    public void deleteFile(String fileKey){
        // 创建OSSClient实例
        OSSClient ossClient = new OSSClient(CloudConstant.ENDPOINT, CloudConstant.ACCESSKEYID, CloudConstant.ACCESSKEYSECRET);
        // 删除文件
        ossClient.deleteObject(CloudConstant.BUCKET, fileKey);
        // 关闭client
        ossClient.shutdown();
    }

    //base64字符串转化成图片
    @SuppressWarnings("restriction")
    public static byte[] BASE64DecoderStringToByte(String imgStr)
    {   //对字节数组字符串进行Base64解码并生成图片
        if (imgStr == null) //图像数据为空
            return null;
        sun.misc.BASE64Decoder decoder = new sun.misc.BASE64Decoder();
        try {
            //Base64解码
            byte[] b = decoder.decodeBuffer(imgStr);
           return b;
        } catch (Exception e){
            return null;
        }
    }

    public static void main(String[] args) {
        //AliyunUtils.getInstance().uploadByte(BASE64DecoderStringToByte(base64), "aabb.jpg");
    }
}

 2. 阿里云配置常量类（可以配置到数据库或者properties，后面会更新配置方式）

public class CloudConstant {

    /****************阿里云OSS上传文件配置****************/
    public static final String ENDPOINT = "http://oss-cn-shanghai.aliyuncs.com"; //外网访问域名
    //public static final String ENDPOINT = "http://oss-cn-shanghai-internal.aliyuncs.com"; //内网访问域名
    public static final String ACCESSKEYID = "12345678qwertyu; //标识用户
    public static final String ACCESSKEYSECRET = "1234567890WERTYUIO"; //加密签名字符
    public static final String BUCKET = "huiyi-bucket"; //存储空间

    /****************背景文件路径配置****************/
    public static final String BACK_IMG_INFO_PATH = "sso/backageImg/";

}

 3. sso templateController类

public String save(SsoTemplate ssoTemplate, Model model, RedirectAttributes redirectAttributes, @RequestParam(value = "file", required = false) MultipartFile file) {
        if (!beanValidator(model, ssoTemplate)) {
            return form(ssoTemplate, model);
        }

        String fileName = String.valueOf(new Date().getTime());
        String staff = "";
        String fileKey = "";
        // 上传文件
        if (file.getSize() != 0) {
            staff = FilenameUtils.getExtension(file.getOriginalFilename());
            fileKey = CloudConstant.BACK_IMG_INFO_PATH + fileName + "." + staff;
            // 删除OSS文件
            AliyunUtils.getInstance().deleteFile(fileKey);
            // 上传文件至阿里云OSS
            try {
                AliyunUtils.getInstance().uploadInputStream(file.getInputStream(), fileKey);
                ssoTemplate.setImg(fileKey);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        ssoTemplateService.save(ssoTemplate);
        addMessage(redirectAttributes, "保存模板成功");
        return "redirect:" + Global.getAdminPath() + "/sso/ssoTemplate";
    }