1、首先到阿里云oss申请
2、引入阿里云OSS依赖包
<!-- 阿里云OSS -->
<dependency>
<groupId>com.aliyun.oss</groupId>
<artifactId>aliyun-sdk-oss</artifactId>
<version>3.5.0</version>
</dependency>
3、配置aliyun.properties
这里根据自己配置的阿里云服务器的信息，进行填写。
aliyun.access-id=
aliyun.access-key=
aliyun.bucket=
aliyun.endpoint=
aliyun.dir=
4、编写oss工具类
OSSProperties.java
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;
@Component
@PropertySource("classpath:/aliyun.properties")
public class OSSProperties implements InitializingBean {
@Value("${aliyun.endpoint}")
private String aliyun_endpoint;
@Value("${aliyun.access-id}")
private String aliyun_access_id;
@Value("${aliyun.access-key}")
private String aliyun_access_key;
@Value("${aliyun.bucket}")
private String aliyun_bucket;
@Value("${aliyun.dir}")
private String aliyun_dir;
// 声明静态变量
public static String ALIYUN_ENDPOINT;
public static String ALIYUN_ACCESS_ID;
public static String ALIYUN_ACCESS_KEY;
public static String ALIYUN_BUCKET;
public static String ALIYUN_DIR;
@Override
public void afterPropertiesSet() {
ALIYUN_ENDPOINT = aliyun_endpoint;
ALIYUN_ACCESS_ID = aliyun_access_id;
ALIYUN_ACCESS_KEY = aliyun_access_key;
ALIYUN_BUCKET = aliyun_bucket;
ALIYUN_DIR = aliyun_dir;
}
}
OSSUtil
这里边完成了删除图片、上传图片等功能。
在上传图片的地方，由于我想指定我上传文件的名称，所以移除了随机生成字符串的代码，如果有需要可以改过来。
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClient;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.model.ObjectMetadata;
import com.aliyun.oss.model.PutObjectResult;
import org.mybatis.logging.Logger;
import org.mybatis.logging.LoggerFactory;
import org.springframework.util.StringUtils;
import org.springframework.web.multipart.MultipartFile;
import java.io.*;
import java.net.URL;
import java.util.Date;
import java.util.Random;
public class OSSUtil {
/**
* log日志
*/
public static final Logger logger = LoggerFactory.getLogger(OSSUtil.class);
private String endpoint = OSSProperties.ALIYUN_ENDPOINT;
private String accessKeyId = OSSProperties.ALIYUN_ACCESS_ID;
private String accessKeySecret = OSSProperties.ALIYUN_ACCESS_KEY;
private String bucketName = OSSProperties.ALIYUN_BUCKET;
private String FOLDER = OSSProperties.ALIYUN_DIR;
/**
* 删除单个图片
*
* @param url
*/
public void deleteImg(String url) {
OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
url = FOLDER + url;
ossClient.deleteObject(bucketName, url);
System.out.println("删除 " + url + " 成功");
ossClient.shutdown();
}
/**
* 上传图片
*
* @param url
* @throws
*/
public void uploadImg2Oss(String url) throws IOException {
File fileOnServer = new File(url);
FileInputStream fin;
try {
fin = new FileInputStream(fileOnServer);
String[] split = url.split("/");
this.uploadFile2OSS(fin, split[split.length - 1]);
} catch (FileNotFoundException e) {
throw new IOException("图片上传失败");
}
}
public String uploadImg2Oss(MultipartFile file, String fileName) throws IOException {
/* if (file.getSize() > 10 * 1024 * 1024) {
throw new IOException("上传图片大小不能超过10M！");
}*/
// String originalFilename = file.getOriginalFilename();
// String substring = originalFilename.substring(originalFilename.lastIndexOf(".")).toLowerCase();
// Random random = new Random();
// String name = random.nextInt(10000) + System.currentTimeMillis() + substring;
try {
InputStream inputStream = file.getInputStream();
this.uploadFile2OSS(inputStream, fileName);
return fileName;
} catch (Exception e) {
throw new IOException("图片上传失败");
}
}
/**
* 获得图片路径
*
* @param fileUrl
* @return
*/
public String getImgUrl(String fileUrl) {
System.out.println(fileUrl);
if (!StringUtils.isEmpty(fileUrl)) {
String[] split = fileUrl.split("/");
return this.getUrl(this.FOLDER + split[split.length - 1]);
}
return "";
}
/**
* 上传到OSS服务器 如果同名文件会覆盖服务器上的
*
* @param instream 文件流
* @param fileName 文件名称 包括后缀名
* @return 出错返回"" ,唯一MD5数字签名
*/
public String uploadFile2OSS(InputStream instream, String fileName) {
String ret = "";
try {
OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
// 创建上传Object的Metadata
ObjectMetadata objectMetadata = new ObjectMetadata();
objectMetadata.setContentLength(instream.available());
objectMetadata.setCacheControl("no-cache");
objectMetadata.setHeader("Pragma", "no-cache");
objectMetadata.setContentType(getcontentType(fileName.substring(fileName.lastIndexOf("."))));
objectMetadata.setContentDisposition("inline;filename=" + fileName);
// 上传文件
PutObjectResult putResult = ossClient.putObject(bucketName, FOLDER + fileName, instream, objectMetadata);
ret = putResult.getETag();
} catch (IOException e) {
// logger.error(e.getMessage(), e);
System.out.println(e.getMessage());
} finally {
try {
if (instream != null) {
instream.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
return ret;
}
/**
* Description: 判断OSS服务文件上传时文件的contentType
*/
public static String getcontentType(String filenameExtension) {
if (filenameExtension.equalsIgnoreCase("bmp")) {
return "image/bmp";
}
if (filenameExtension.equalsIgnoreCase("gif")) {
return "image/gif";
}
if (filenameExtension.equalsIgnoreCase("jpeg") || filenameExtension.equalsIgnoreCase("jpg")
|| filenameExtension.equalsIgnoreCase("png")) {
return "image/jpeg";
}
if (filenameExtension.equalsIgnoreCase("html")) {
return "text/html";
}
if (filenameExtension.equalsIgnoreCase("txt")) {
return "text/plain";
}
if (filenameExtension.equalsIgnoreCase("vsd")) {
return "application/vnd.visio";
}
if (filenameExtension.equalsIgnoreCase("pptx") || filenameExtension.equalsIgnoreCase("ppt")) {
return "application/vnd.ms-powerpoint";
}
if (filenameExtension.equalsIgnoreCase("docx") || filenameExtension.equalsIgnoreCase("doc")) {
return "application/msword";
}
if (filenameExtension.equalsIgnoreCase("xml")) {
return "text/xml";
}
return "image/jpeg";
}
/**
* 获得url链接
*
* @param key
* @return
*/
public String getUrl(String key) {
// 设置URL过期时间为10年 3600l* 1000*24*365*10
OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
Date expiration = new Date(System.currentTimeMillis() + 3600L * 1000 * 24 * 365 * 10);
// 生成URL
URL url = ossClient.generatePresignedUrl(bucketName, key, expiration);
/* url = "https://" + bucketName + ".oss-cn-beijing.aliyuncs.com/" + bucketName+"/"+ key;*/
if (url != null) {
String host = "https://" + url.getHost() + url.getPath();
return host;
}
return "";
}
}