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改为json序列化

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zhangli
2025-08-12 00:52:27 +08:00
parent 86219d26a2
commit fe09dbf0e2
1 changed files with 38 additions and 19 deletions
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55
src/main/java/com/sczx/store/service/impl/OssServiceImpl.java
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@ -1,5 +1,6 @@
package com.sczx.store.service.impl;
import com.alibaba.fastjson.JSON;
import com.sczx.store.config.OSSConfig;
import com.sczx.store.dto.OssPlicyReq;
import com.sczx.store.dto.OssPolicyRes;
@ -13,10 +14,7 @@ import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Base64;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.*;
@Slf4j
@Service
@ -29,20 +27,11 @@ public class OssServiceImpl implements OssService {
public OssPolicyRes getPolicy(OssPlicyReq ossPlicyReq) {
long expireEndTime = System.currentTimeMillis() + ossPlicyReq.getExpireTime() * 1000;
Date expiration = new Date(expireEndTime);
DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
String expire = df.format(expiration);
Map<String, Object> policyMap = getStringObjectMap(ossPlicyReq, expireEndTime);
// 创建policy
Map<String, Object> policyMap = new LinkedHashMap<>();
policyMap.put("expiration", expire);
Map<String, Object> conditionMap = new LinkedHashMap<>();
conditionMap.put("bucket", ossPlicyReq.getBucketName()); // 需要替换成你的 bucket 名称
policyMap.put("conditions", new Object[]{conditionMap});
String policy = Base64.getEncoder().encodeToString(policyMap.toString().getBytes(StandardCharsets.UTF_8));
// 使用FastJSON序列化policy为标准JSON字符串
String policyJson = JSON.toJSONString(policyMap);
String policy = Base64.getEncoder().encodeToString(policyJson.getBytes(StandardCharsets.UTF_8));
String signature = calculateSignature(ossConfig.getAccessKeySecret(), policy);
// 构造返回数据
@ -51,11 +40,41 @@ public class OssServiceImpl implements OssService {
response.setPolicy(policy);
response.setSignature(signature);
response.setDir(ossPlicyReq.getDir() + "/"); // 可以自定义上传目录
response.setHost("https://" + ossPlicyReq.getBucketName() + "." + ossConfig.getRegion() + ".aliyuncs.com"); // 需要替换成你的 bucket 名称
response.setHost("https://" + ossPlicyReq.getBucketName() + "." + ossConfig.getRegion() + ".aliyuncs.com");
response.setExpire(expireEndTime / 1000);
return response;
}
private static Map<String, Object> getStringObjectMap(OssPlicyReq ossPlicyReq, long expireEndTime) {
Date expiration = new Date(expireEndTime);
DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
String expire = df.format(expiration);
// 创建policy - 使用标准的JSON结构
Map<String, Object> policyMap = new HashMap<>();
policyMap.put("expiration", expire);
// 构造conditions数组
List<Object> conditions = new ArrayList<>();
// bucket条件
Map<String, String> bucketCondition = new HashMap<>();
bucketCondition.put("bucket", ossPlicyReq.getBucketName());
conditions.add(bucketCondition);
// 可选：添加目录前缀条件
if (ossPlicyReq.getDir() != null && !ossPlicyReq.getDir().isEmpty()) {
List<String> startsWithCondition = new ArrayList<>();
startsWithCondition.add("starts-with");
startsWithCondition.add("$key");
startsWithCondition.add(ossPlicyReq.getDir() + "/");
conditions.add(startsWithCondition);
}
policyMap.put("conditions", conditions);
return policyMap;
}
/**
* 计算签名
* @param accessKeySecret