Java实现简单上传图片到阿里云对象存储OSS

阿里云对象存储服务(Object Storage Service,简称 OSS)提供基于网络的数据存取服务。使用 OSS,可以通过网络随时存储和调用包括文本、图片、音频和视频等在内的各种非结构化数据文件。具有:1、易用性:简单易用,便于管理,深度集成数据处理服务;2、高可靠:多重冗余备份,服务设计可用性不低于99.99%;3、强安全:多层次安全防护,支持跨区域复制、异地容灾机制;4、低成本:总体TCO更低,生命周期管理进一步降低成本等特点。

在实现之前首先要购买阿里云对象存储OSS资源包并创建了Bucket。这里不详细介绍,只介绍实现的代码。

前端实现比较简单,可以采用插件,有layui,bootstrap-fileinput等优秀插件,这里使用layui。

前端代码:

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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>upload</title>
  <link rel="stylesheet" href="/static/build/layui.css" media="all">
</head>
<body>
  
<button type="button" class="layui-btn" id="test1">
  <i class="layui-icon">&#xe67c;</i>上传图片
</button>
  
<script src="/static/build/layui.js"></script>
<script>
layui.use('upload', function(){
  var upload = layui.upload;
    
  //执行实例
  var uploadInst = upload.render({
    elem: '#test1' //绑定元素
    ,url: '/upload/' //上传接口
    ,done: function(res){
      //上传完毕回调,拿到路径(res.data)自己选择是在页面显示图片还是显示路径。
    }
    ,error: function(){
      //请求异常回调,自己根据需求来写错误提示以及下一步逻辑。
    }
  });
});
</script>
</body>
</html>

后端接口:

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    @RequestMapping(value="/upload")
@ResponseBody
public JsonResult upload(MultipartFile file, HttpServletRequest request) {
    if (!file.isEmpty()) {
        try {
            SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
            // 生成文件名称
            String nameSuffix = file.getOriginalFilename().substring(0, file.getOriginalFilename().lastIndexOf("."))
                    .replaceAll(" ", "_").replaceAll(",", "") + format.format(DateUtil.date())
                    + new Random().nextInt(1000);
            //上传原始图片到阿里云
            String uploadPath = ossFileUtil.uploadAliyun(file,nameSuffix);
            return new JsonResult(true, "上传成功",uploadPath);
        } catch (Exception e) {
            log.error("上传附件错误" + e.getMessage());
            return new JsonResult(false, "系统未知错误");
        }
    } else {
        return new JsonResult(false, "文件不能为空");
    }
}
1
JsonResult工具类:
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public class JsonResult {
    private boolean flag;
    private String msg;
    private Object data;
 
    public JsonResult() {
        super();
    }
 
    public JsonResult(boolean flag, String msg) {
        super();
        this.flag = flag;
        this.msg = msg;
    }
 
    public JsonResult(boolean flag, String msg, Object data) {
        super();
        this.flag = flag;
        this.msg = msg;
        this.data = data;
    }
 
    public boolean isFlag() {
        return flag;
    }
 
    public void setFlag(boolean flag) {
        this.flag = flag;
    }
 
    public String getMsg() {
        return msg;
    }
 
    public void setMsg(String msg) {
        this.msg = msg;
    }
 
    public Object getData() {
        return data;
    }
 
    public void setData(Object data) {
        this.data = data;
    }
 
}

 上传图片到阿里云工具类:

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<!-- 阿里云oss -->
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>3.10.2</version>
        </dependency>

 

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public class ossFileUtil {
    public String uploadAliyun(MultipartFile file,String fileName) throws IOException {
        // 1 获取上传需要的固定值
        String endpoint ="oss-cn-shanghai.aliyuncs.com";      //你的站点
        String accessKeyId = "<yourAccessKeyId>"//你的acess_key_id
        String accessKeySecret = "<yourAccessKeySecret>"; //你的acess_key_secret
        String bucketName = "<yourBucketName>";       //你的bucket_name
        //外面获取文件输入流,最后方便关闭
        InputStream in = file.getInputStream();
        try {
            //2 创建OssClient对象
            OSS ossClient =new OSSClientBuilder().build(endpoint,accessKeyId,accessKeySecret);
            //3 获取文件信息,为了上传
            // meta设置请求头
            ObjectMetadata meta = new ObjectMetadata();
            meta.setContentType("image/jpg");
            //4 设置知道文件夹
            ossClient.putObject(bucketName,fileName,in, meta);
            //5 关闭ossClient
            ossClient.shutdown();
            //6 返回上传之后地址,拼接地址
            String uploadUrl = "https://"+bucketName+"."+endpoint+"/"+fileName;
            return uploadUrl;
        }catch(Exception e) {
            e.printStackTrace();
            return null;
        }finally {
            in.close();
        }
    }
}

  

 

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