OSS获得阿里云服务端签名——服务端签名后直传

你的名字 2021-07-24 12:48 506阅读 0赞

# 一 任务 #

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

完成上图的第1步和第2步。

# 二 参考 #

[https://help.aliyun.com/document\_detail/31926.html?spm=a2c4g.11186623.6.1711.4d777815zWYCD0][https_help.aliyun.com_document_detail_31926.html_spm_a2c4g.11186623.6.1711.4d777815zWYCD0]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 1][]

# 三 创建第三方服务微服务 #

1 配置依赖

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.2.1.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.atguigu.gulimall</groupId>
        <artifactId>gulimall-third-party</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>gulimall-third-party</name>
        <description>第三方服务</description>
        <properties>
            <java.version>1.8</java.version>
            
            <spring-cloud.version>Greenwich.SR3</spring-cloud.version>
        </properties>
        <dependencies>
            
            <dependency>
                <groupId>com.atguigu.gulimall</groupId>
                <artifactId>gulimall-common</artifactId>
                <version>0.0.1-SNAPSHOT</version>
                <exclusions>
                    
                    <exclusion>
                        <groupId>com.baomidou</groupId>
                        <artifactId>mybatis-plus-boot-starter</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-openfeign</artifactId>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alicloud-oss</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
                <exclusions>
                    <exclusion>
                        <groupId>org.junit.vintage</groupId>
                        <artifactId>junit-vintage-engine</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
        </dependencies>
        <dependencyManagement>
            <dependencies>
                
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>${spring-cloud.version}</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                
                <dependency>
                    <groupId>com.alibaba.cloud</groupId>
                    <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                    <version>2.1.0.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
        <repositories>
            <repository>
                <id>spring-milestones</id>
                <name>Spring Milestones</name>
                <url>https://repo.spring.io/milestone</url>
            </repository>
        </repositories>
    </project>

2 配置bootstrap.properties

# 配置服务名
    spring.application.name=gulimall-third-party
    # 配置中心信息
    spring.cloud.nacos.config.server-addr=127.0.0.1:8848
    spring.cloud.nacos.config.namespace=7a4b5a41-ed40-4f37-9482-354e0002a783
    
    # 配置oss相关配置
    spring.cloud.nacos.config.ext-config[0].data-id=oss.yml
    spring.cloud.nacos.config.ext-config[0].group=DEFAULT_GROUP
    spring.cloud.nacos.config.ext-config[0].refresh=true

3 配置application.properties

spring:
      cloud:
        nacos:
          discovery:
            server-addr: 127.0.0.1:8848
        alicloud:
          access-key: XXXXXXXXXXX
          secret-key: XlKSpUcIILsdjYWuZXrRRwVbX4XlQ5
          oss:
            endpoint: oss-cn-chengdu.aliyuncs.com
            bucket: gulimall-cakin
      application:
        name: gulimall-third-party
    server:
      port: 30000

4 配置服务注册和发现

// 开启服务注册发现
    @EnableDiscoveryClient
    @SpringBootApplication
    public class GulimallThirdPartyApplication {
        public static void main(String[] args) {
            SpringApplication.run(GulimallThirdPartyApplication.class, args);
        }
    }

5 控制器

package com.atguigu.gulimall.thirdparty.controller;
    
    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.atguigu.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 java.text.SimpleDateFormat;
    import java.util.Date;
    import java.util.LinkedHashMap;
    import java.util.Map;
    
    /**
     * @className: OssController
     * @description: 对象存储控制器
     * @date: 2020/10/29
     * @author: cakin
     */
    @RestController
    public class OssController {
        @Autowired
        OSS ossClient;
        /**
         * 端点
         */
        @Value("${spring.cloud.alicloud.oss.endpoint}")
        private String endpoint;
        /**
         * bucket
         */
        @Value("${spring.cloud.alicloud.oss.bucket}")
        private String bucket;
        /**
         * access-key
         */
        @Value("${spring.cloud.alicloud.access-key}")
        private String accessId;
    
        /**
         * 功能描述：获得上传policy和签名
         *
         * @author cakin
         * @date 2020/10/29
         * @return R 签名数据
         */
        @RequestMapping("/oss/policy")
        public R policy() {
            String host = "https://" + bucket + "." + endpoint; // host的格式为 https:// + 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;
                // 30 s 超时
                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>();
                // access-key
                respMap.put("accessid", accessId);
                // 策略
                respMap.put("policy", encodedPolicy);
                // 策略签名
                respMap.put("signature", postSignature);
                // 用户上传文件时指定的前缀
                respMap.put("dir", dir);
                // 主机
                respMap.put("host", host);
                // 过期时间
                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);
        }
    }

# 四 测试 #

1 postman测试结果

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 2][]

# 五 通过网关测试 #

1 网关配置

- id: third_party_route
      uri: lb://gulimall-third-party
      predicates:
        - Path=/api/thirdparty/**
      filters:
        - RewritePath=/api/thirdparty/(?<segment>.*),/$\{segment}

2 测试

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70 3][]

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[https_help.aliyun.com_document_detail_31926.html_spm_a2c4g.11186623.6.1711.4d777815zWYCD0]: https://help.aliyun.com/document_detail/31926.html?spm=a2c4g.11186623.6.1711.4d777815zWYCD0
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