文章目录
1、第一步：阿里云申请账号：（以下可能有点混搭，因为涉及到钱。。。但是步骤是没错的）
搜索 RAM-> 进入 RAM 访问控制。
创建用户：
授予权限
进入OSS控制台
信息确认无误后，点击确定：
记录地域地址：
oss-cn-beijing.aliyuncs.com
oss-cn-beijing-internal.aliyuncs.com
oss-cn-beijing-internal.aliyuncs.com
获得access-key和secret-key
2.1、maven依赖
com.alibaba.cloud spring-cloud-starter-alicloud-oss
- 1
- 2
- 3
- 4
2.2、增加OSS配置文件
spring: cloud: alicloud: access-key: 上面获得的access-key secret-key: 上面获得的secret-key oos: endpoint: oss-cn-beijing.aliyuncs.com
- 1
- 2
- 3
- 4
- 5
- 6
- 7
2.3、文件上传接口开发
package com.zhz.controller;
import cn.hutool.core.date.DateUtil;
import com.alibaba.fastjson.JSONObject;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.utils.BinaryUtil;
import com.aliyun.oss.model.MatchMode;
import com.aliyun.oss.model.PolicyConditions;
import com.zhz.model.R;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import java.io.IOException;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* 完成文件上传的功能
*/
@RestController
@Api(tags = "文件上传的控制器")
public class FileController {
// spring-cloud-alibaba-oss 会自动的注入该对象,爆红也不用理
@Autowired
private OSS ossClient;
@Value("${spring.cloud.alicloud.access-key}")
private String accessId;
@Value("${oss.bucket.name:coin-exchange-imgs1}")
private String bucketName;
@Value("${spring.cloud.alicloud.oss.endpoint}")
private String endPoint;
@Value("${oss.callback.url:http://coinoss.free.idcfengye.com}")//nginx负载均衡地址
private String ossCallbackUrl; //
@ApiOperation(value = "上传文件")
@PostMapping("/image/AliYunImgUpload")
@ApiImplicitParams({
@ApiImplicitParam(name = "file", value = "你要上传的文件")
})
public RfileUpload(@RequestParam("file") MultipartFile file) throws IOException {
/**
* 1 bucketName
* 2 文件的名称 日期 +原始的文件名（uuid）来做
* 3 文件的输入流
*/
// 2020-10-10->2020/10/10/xxx.jpg
String fileName = DateUtil.today().replaceAll("-", "/") + "/" + file.getOriginalFilename();
ossClient.putObject(bucketName, fileName, file.getInputStream());
// https://coin-exchange-imgs.oss-cn-beijing.aliyuncs.com/2020/10/10/xxx.jpg
// https://coin-exchange-imgs.oss-cn-beijing.aliyuncs.com/2020/10/10/banner9.jpg
return R.ok("https://" + bucketName + "." + endPoint + "/" + fileName); //能使用浏览器访问到文件路径http://xxx.com/路径
}
@GetMapping("/image/pre/upload")//自己的地址
@ApiOperation(value = "文件的上传获取票据")
public R<Map> preUploadPolicy() {
String dir = DateUtil.today().replaceAll("-", "/") + "/";
Mappolicy = getPolicy(30L, 3 * 1024 * 1024L, dir);
return R.ok(policy) ;
}
private MapgetPolicy(long expireTime, long maxFileSize, String dir) {
try {
long expireEndTime = System.currentTimeMillis() + expireTime * 1000;
Date expiration = new Date(expireEndTime);
// PostObject请求最大可支持的文件大小为5 GB，即CONTENT_LENGTH_RANGE为5*1024*1024*1024。
PolicyConditions policyConds = new PolicyConditions();
// 设置上传文件的最大的体积
policyConds.addConditionItem(PolicyConditions.COND_CONTENT_LENGTH_RANGE, 0, maxFileSize);
// 设置上传文件上传到那个文件夹
policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, dir);
String postPolicy = ossClient.generatePostPolicy(expiration, policyConds); // 设置该Policy(票据) 有效时间
byte[] binaryData = postPolicy.getBytes("utf-8");
String encodedPolicy = BinaryUtil.toBase64String(binaryData);
String postSignature = ossClient.calculatePostSignature(postPolicy);
// 返回值
MaprespMap = new LinkedHashMap();
respMap.put("accessid", accessId); // 设置我们之前的accessKey
respMap.put("policy", encodedPolicy);
respMap.put("signature", postSignature);
respMap.put("dir", dir);
respMap.put("host", "https://" + bucketName +"."+ endPoint); // 设置 上传的Host https://bulkname.endpoint
respMap.put("expire", String.valueOf(expireEndTime / 1000));
// respMap.put("expire", formatISO8601Date(expiration));
JSONObject jasonCallback = new JSONObject();
jasonCallback.put("callbackUrl", ossCallbackUrl); // 当我们的前端把文件上传到oss 服务器成功后
// ,oss 服务器会想回调的callbackUrl(公网) 发一个post请求来告诉后端服务器用户上传文件的情况
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 respMap;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}