阿里云对象存储 OSS(Object Storage Service)是一款海量、安全、低成本、高可靠的云存储服务,提供最高可达 99.995 % 的服务可用性。多种存储类型供选择,全面优化存储成本。
视频介绍
创建bucket
开发文档
上传文件demo (微改)
package com.beijing.gulimall.order;import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.common.auth.CredentialsProvider;
import com.aliyun.oss.common.auth.DefaultCredentialProvider;
import java.io.FileInputStream;
import java.io.InputStream;public class uploadFile {public static void main(String[] args) throws Exception {// RAM用户的访问密钥(AccessKey ID和AccessKey Secret)。String accessKeyId = "";String accessKeySecret = "";// 使用代码嵌入的RAM用户的访问密钥配置访问凭证。CredentialsProvider credentialsProvider = new DefaultCredentialProvider(accessKeyId, accessKeySecret);// Endpoint以华东1(杭州)为例,其它Region请按实际情况填写。String endpoint = "https://oss-cn-beijing.aliyuncs.com";// 从环境变量中获取访问凭证。运行本代码示例之前,请确保已设置环境变量OSS_ACCESS_KEY_ID和OSS_ACCESS_KEY_SECRET。// 填写Bucket名称,例如examplebucket。String bucketName = "gulimall-hellohai";// 填写Object完整路径,例如exampledir/exampleobject.txt。Object完整路径中不能包含Bucket名称。String objectName = "13.jpg";// 创建OSSClient实例。OSS ossClient = new OSSClientBuilder().build(endpoint, credentialsProvider);try {String content = "hello";//上传文件流InputStream inputStream = new FileInputStream("D:\\1.jpg");ossClient.putObject(bucketName, objectName, inputStream);} catch (OSSException oe) {} catch (ClientException ce) {} finally {if (ossClient != null) {ossClient.shutdown();}}}
}
对OSS进行配置封装至spring 容器
<dependency><groupId>com.alibaba.cloud</groupId><artifactId>spring-cloud-starter-alicloud-oss</artifactId></dependency>
将配置数据放在application.yml中
spring:cloud:alicloud:access-key: LTAIsecret-key: ISqgoss:endpoint: oss-cn-beijing.aliyuncs.combucket: gulimall-hellohai
对应的java代码(简写)
@Resource
OSSClient ossClient;ossClient.putObject(bucketName, objectName, inputStream);
以上使用的方式都是
项目中OSS的使用可以改进为
这样可以节省很多资源,不需要把文件发送到controller层,直接发送给OSS就可以
获得签名信息
package com.lihailin.gulimall.thirdparty.controller;import com.aliyun.oss.OSS;
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 com.lihailin.common.utils.R;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import javax.annotation.Resource;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;@RestController
public class ossController {@ResourceOSS ossClient;@Value("${spring.cloud.alicloud.oss.endpoint}")private String endpoint;@Value("${spring.cloud.alicloud.oss.bucket}")private String bucket;@Value("${spring.cloud.alicloud.access-key}")private String accessId;@RequestMapping("/oss/policy")public R policy() {//https://gulimall-hello.oss-cn-beijing.aliyuncs.com/hahaha.jpgString host = "https://" + 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。
// String callbackUrl = "http://88.88.88.88:8888";String format = new SimpleDateFormat("yyyy-MM-dd").format(new Date());String dir = format + "/"; // 用户上传文件时指定的前缀。Map<String, String> respMap = null;try {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 = ossClient.generatePostPolicy(expiration, policyConds);byte[] binaryData = postPolicy.getBytes("utf-8");String encodedPolicy = BinaryUtil.toBase64String(binaryData);String postSignature = ossClient.calculatePostSignature(postPolicy);respMap = new LinkedHashMap<String, String>();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));} catch (Exception e) {// Assert.fail(e.getMessage());System.out.println(e.getMessage());}return R.ok().put("data",respMap);}
}