阿里----OSS对象存储服务

Love The Way You Lie 2023-02-22 05:24 220阅读 0赞

### 第一步、开启OSS服务，创建一个Bucket、创建一个用户并开启OSS权限 ###

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名称和地区根据自己需求填写，除了括出来的其他默认即可，创建bucket  
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### 创建一个AccessKey用户 ###

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创建好后，再次点击AccessKey管理  
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获取下面的两个字段信息，后面需要使用它来进行OSS对象管理  
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### 开启OSS跨域 ###

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--------------------

### 第二步、引入依赖、添加配置 ###

### 引入依赖 ###

<dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alicloud-oss</artifactId>
        <version>${alicloud-oss.version}</version>
    </dependency>

### 添加配置 ###

spring:
      application:
        name: cloud-oss
      cloud:
        alicloud:
          access-key: OSS用户的AccessKey ID
          secret-key: OSS用户的AccessKey SECRET
          oss:
            endpoint: 访问的节点域名，例如：oss-cn-shenzhen.aliyuncs.com
            bucket: yumbo-oss #这个根据自己的bucket名称填写，启动器没有本身没有这个配置

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[OSS的文档地址][OSS]  
[Github文档地址][Github](https://github.com/alibaba/spring-cloud-alibaba/blob/master/spring-cloud-alibaba-docs/src/main/asciidoc-zh/oss.adoc)

### 后端签名后通过javascript直传 ###

[文档地址][Link 1]

### 签名信息获取 ###

编写一个Controller  
示例代码如下

import com.alibaba.fastjson.JSONObject;
    import com.aliyun.oss.OSSClient;
    import com.aliyun.oss.common.utils.BinaryUtil;
    import com.aliyun.oss.model.MatchMode;
    import com.aliyun.oss.model.PolicyConditions;
    import org.springframework.web.bind.annotation.CrossOrigin;
    import org.springframework.web.bind.annotation.GetMapping;
    import org.springframework.web.bind.annotation.RestController;
    import java.io.UnsupportedEncodingException;
    import java.sql.Date;
    import java.time.LocalDate;
    import java.util.LinkedHashMap;
    import java.util.Map;
    import java.util.TimeZone;
    
    @RestController
    public class OssController { 
    
        @GetMapping("/asign")
        @CrossOrigin  //开启跨域访问
        public String policyAsign() { 
            String accessId = "LTAI4GG2L691UsdkKUmE3qP8";  // 请填写您的 AccessKeyId。
            String accessKey = "q12TVvTqJTftUrKVO1xYkFO9D1vHRS"; // 请填写您的 AccessKeySecret。
            String endpoint = "oss-cn-shenzhen.aliyuncs.com";  // 请填写您的 endpoint。
            String bucket = "yumbo-oss.oss-cn-shenzhen.aliyuncs.com";    // 请填写您的 bucketname 。
    
            String host = "http://" + bucket + "." + endpoint; // host的格式为 bucketname.endpoint
            // callbackUrl为 上传回调服务器的URL，请将下面的IP和Port配置为您自己的真实信息。
            TimeZone.setDefault(TimeZone.getTimeZone("Asia/Shanghai"));
            String dir = LocalDate.now().toString();// 用户上传文件时指定的前缀。我这里设置日期为前缀
            OSSClient client = new OSSClient(endpoint, accessId, accessKey);
    
            long expireTime = 30;
            long expireEndTime = System.currentTimeMillis() + expireTime * 1000;
            Date expiration = new Date(expireEndTime);
            PolicyConditions policyConds = new PolicyConditions();
            policyConds.addConditionItem(PolicyConditions.COND_CONTENT_LENGTH_RANGE, 0, 1048576000);
            policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, dir);
    
            String postPolicy = client.generatePostPolicy(expiration, policyConds);
            byte[] binaryData = new byte[0];
            try { 
                binaryData = postPolicy.getBytes("utf-8");
            } catch (UnsupportedEncodingException e) { 
                e.printStackTrace();
            }
            String encodedPolicy = BinaryUtil.toBase64String(binaryData);
            String postSignature = client.calculatePostSignature(postPolicy);
    
            Map<String, Object> respMap = new LinkedHashMap<String, Object>();
            respMap.put("accessid", accessId);
            respMap.put("policy", encodedPolicy);
            respMap.put("signature", postSignature);
            respMap.put("dir", dir);
            respMap.put("host", host);
            respMap.put("expire", String.valueOf(expireEndTime / 1000));
            // respMap.put("expire", formatISO8601Date(expiration));
    
            JSONObject jasonCallback = new JSONObject();
    // jasonCallback.put("callbackUrl", callbackUrl);
            jasonCallback.put("callbackBody",
                    "filename=${object}&size=${size}&mimeType=${mimeType}&height=${imageInfo.height}&width=${imageInfo.width}");
            jasonCallback.put("callbackBodyType", "application/x-www-form-urlencoded");
            String base64CallbackBody = BinaryUtil.toBase64String(jasonCallback.toString().getBytes());
            respMap.put("callback", base64CallbackBody);
    
            return new JSONObject(respMap).toJSONString();//将签名数据暴露出去
    
        }
    }

为了聚合服务，所有的请求都经过网关先过滤  
所以添加一个路由配置

spring:
      cloud:
        gateway:
          routes:
            - id: third_party_route
              uri: lb://要负载均衡到的Oss服务名
              predicates:
                - Path=/api/thirdparty/**
              filters:
                - RewritePath=/api/thirdparty/(?<segment>.*),/$\{ segment}

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxODEzMjA4_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200702025644321.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxODEzMjA4,size_16,color_FFFFFF,t_70
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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxODEzMjA4_size_16_color_FFFFFF_t_70 6]: https://img-blog.csdnimg.cn/20200702030610851.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQxODEzMjA4,size_16,color_FFFFFF,t_70
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[OSS]: https://help.aliyun.com/document_detail/32011.html?spm=a2c4g.11186623.6.780.52156328WBJs2p
[Github]: https://github.com/alibaba/spring-cloud-alibaba/blob/master/spring-cloud-alibaba-docs/src/main/asciidoc-zh/oss.adoc
[Link 1]: https://help.aliyun.com/document_detail/31925.html?spm=a2c4g.11186623.6.1563.127074b8I3WdMN