使用工具类转换base64为oss线上的地址

素颜马尾好姑娘i 2022-05-08 07:14 430阅读 0赞

思路：直接将base64传进工具类中，返回oss的地址

代码：  
 /\*\*  
     \* base64  
     \* 前四个参数是链接oss的参数，都是固定的，最后一个是你的base64，返回的转换后的base64      
     \*/  
    public static String ossAliYunUploadBase64(String endpoint,String accessKeyId,String accessKeySecret,String bucketName,String base64Str) throws Exception \{

OSSClient ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);  
        try \{

if (!ossClient.doesBucketExist(bucketName)) \{  
                /\*  
                 \* Create a new OSS bucket  
                 \*/  
                System.out.println("Creating bucket " + bucketName + "\\n");  
                ossClient.createBucket(bucketName);  
                CreateBucketRequest createBucketRequest= new CreateBucketRequest(bucketName);  
                createBucketRequest.setCannedACL(CannedAccessControlList.PublicRead);  
                ossClient.createBucket(createBucketRequest);  
            \}  
            //data:image/png;base64,/9j/4  
            InputStream inputStream1;  
            String\[\] array = base64Str.split(",");  
            int index = array\[0\].indexOf("/");  
            int endIndex = array\[0\].indexOf(";");  
            String endName  = array\[0\].substring(index+1,endIndex);//获取文件后缀  
            String dateStr = DateUtils.toString(new Date(), "yyyyMMdd");  
            String realUrl=dateStr+"/file\_preview/"+RandomStrUtil.getRandStr(10)+"."+endName;

byte\[\] bytes = new BASE64Decoder().decodeBuffer(array\[1\]);  //将字符串转换为byte数组  
            inputStream1 = new ByteArrayInputStream(bytes);  
            ObjectMetadata metadata = new ObjectMetadata();  
            metadata.setContentLength(inputStream1.available());  
            ossClient.putObject(bucketName,realUrl, inputStream1, metadata);

System.out.println(realUrl);  
            return "/"+realUrl;

\} catch (OSSException oe) \{  
            System.out.println("Caught an OSSException, which means your request made it to OSS, "  
                    + "but was rejected with an error response for some reason.");  
            System.out.println("Error Message: " + oe.getErrorCode());  
            System.out.println("Error Code:       " + oe.getErrorCode());  
            System.out.println("Request ID:      " + oe.getRequestId());  
            System.out.println("Host ID:           " + oe.getHostId());  
        \} catch (ClientException ce) \{  
            System.out.println("Caught an ClientException, which means the client encountered "  
                    + "a serious internal problem while trying to communicate with OSS, "  
                    + "such as not being able to access the network.");  
            System.out.println("Error Message: " + ce.getMessage());  
        \} finally \{  
            /\*  
             \* Do not forget to shut down the client finally to release all allocated resources.  
             \*/  
            ossClient.shutdown();  
        \}  
        return "";  
    \}

这个比较简单，就是一个工具类的方法，照写就行