OSS是第三方服务,而以后肯定还是会有很多第三方的服务需要引入,所以新建一个第三方模块webshop-third-party做一个整合,webshop-third-party模块的pom.xml如下:
<?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>2.1.8.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.jiejie.webshop</groupId>
<artifactId>webshop-third-party</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>webshop-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.jiejie.webshop</groupId>
<artifactId>webshop-common</artifactId>
<version>0.0.1-SNAPSHOT</version>
</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>
<!--oss存储服务-->
<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>
</project>
同时把webshop-third-party模块整合到项目中:
先把webshop-third-party项目注册进注册中心中,同时加上使用OSS服务需要的配置属性,application.yml文件信息如下:
#第三方服务端口号
server:
port: 30000
#服务名,注册中心,oss相关配置
spring:
application:
name: webshop-third-party
cloud:
nacos:
discovery:
server-addr: 127.0.0.1
alicloud:
oss:
endpoint: oss-cn-hangzhou.aliyuncs.com
access-key: LTAI4G9WxXN3MmQ1EETv28Ev
secret-key: mlMSCDoWW24TD1E5qIUiU7XbJZr0Lr
oss服务的配置信息从可以在如下截图中找到:
启动类加上服务注册和发现注解@EnableDiscoveryClient以及先去除数据源自动配置,如下:
@EnableDiscoveryClient
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
public class WebshopThirdPartyApplication {
public static void main(String[] args) {
SpringApplication.run(WebshopThirdPartyApplication.class, args);
}
}
这里采用服务端签名后直传的方式,不会对服务端产生压力,而且安全可靠,服务端签名后直传简单的理解就是比如用户要上传文件,会先上传Policy给服务端,服务端会返回一个上传Policy和签名给用户,然后用户就可以上传数据到OSS了。
编写签名接口,如下:
package com.jiejie.webshop.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 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.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;
@RestController
@RequestMapping("/oss")
public class OssController {
@Autowired
private OSS ossClient;
@Value("${spring.cloud.alicloud.access-key}")
private String accessId;
@Value("${spring.cloud.alicloud.oss.endpoint}")
private String endpoint;
@Value("${spring.cloud.alicloud.oss.bucket}")
private String bucket;
@GetMapping("/policy")
public Map<String, String> policy() {
String 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";
//以日期为前缀
String date = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
String dir = date + "/"; // 用户上传文件时指定的前缀。
Map<String, String> respMap = new LinkedHashMap<String, String>();
try {
long expireTime = 30;
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();
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.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));
} catch (Exception e) {
System.out.println(e.getMessage());
} finally {
ossClient.shutdown();
}
return respMap;
}
}
根据配置的路由规则,浏览器输入http://localhost:88/api/thirdparty/oss/policy
访问签名接口,结果如下:
能成功返回签名。