官網:: 對象存儲(Object Storage Service,簡稱OSS)
以下博客簡單介紹連接阿里雲的OSS,新建Bucket,刪除Bucket,向阿里雲的OSS存儲中存儲單個文件,獲取單個文件,刪除單個文件等功能。
Api:: 開放式存儲(OSS)Java API手冊 1.0 documentation
以下爲pom依賴:
<!-- aliyun oss -->
<dependency>
<groupId>com.aliyun.oss</groupId>
<artifactId>aliyun-sdk-oss</artifactId>
<version>2.2.1</version>
</dependency>
下載地址:Aliyun OSS SDK For Java » 2.2.1
下邊爲oss的配置文件oss.properties,也可以直接寫入代碼:
endpoint=oss-cn-beijing.aliyuncs.com
accessKeyId=您的key
accessKeySecret=您的secret
注endpoint爲:OSS外網域名或OSS內網域名去掉您的Bucket.後
OSS的操作代碼:
package my.demo.java.z.aliyun.oss;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.PropertyResourceBundle;
import java.util.ResourceBundle;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.aliyun.oss.OSSClient;
import com.aliyun.oss.model.Bucket;
import com.aliyun.oss.model.OSSObject;
import com.aliyun.oss.model.ObjectMetadata;
import com.aliyun.oss.model.PutObjectResult;
public class OSSUnit {
//log
private static final Logger LOG = LoggerFactory.getLogger(OSSUnit.class);
//阿里雲API的內或外網域名
private static String ENDPOINT;
//阿里雲API的密鑰Access Key ID
private static String ACCESS_KEY_ID;
//阿里雲API的密鑰Access Key Secret
private static String ACCESS_KEY_SECRET;
//init static datas
static{
ResourceBundle bundle = PropertyResourceBundle.getBundle("properties.oss");
ENDPOINT = bundle.containsKey("endpoint") == false ? "" : bundle.getString("endpoint");
ACCESS_KEY_ID = bundle.containsKey("accessKeyId") == false? "" : bundle.getString("accessKeyId");
ACCESS_KEY_SECRET = bundle.containsKey("accessKeySecret") == false ? "" : bundle.getString("accessKeySecret");
}
/**
* 獲取阿里雲OSS客戶端對象
* */
public static final OSSClient getOSSClient(){
return new OSSClient(ENDPOINT,ACCESS_KEY_ID, ACCESS_KEY_SECRET);
}
/**
* 新建Bucket --Bucket權限:私有
* @param bucketName bucket名稱
* @return true 新建Bucket成功
* */
public static final boolean createBucket(OSSClient client, String bucketName){
Bucket bucket = client.createBucket(bucketName);
return bucketName.equals(bucket.getName());
}
/**
* 刪除Bucket
* @param bucketName bucket名稱
* */
public static final void deleteBucket(OSSClient client, String bucketName){
client.deleteBucket(bucketName);
LOG.info("刪除" + bucketName + "Bucket成功");
}
/**
* 向阿里雲的OSS存儲中存儲文件 --file也可以用InputStream替代
* @param client OSS客戶端
* @param file 上傳文件
* @param bucketName bucket名稱
* @param diskName 上傳文件的目錄 --bucket下文件的路徑
* @return String 唯一MD5數字簽名
* */
public static final String uploadObject2OSS(OSSClient client, File file, String bucketName, String diskName) {
String resultStr = null;
try {
InputStream is = new FileInputStream(file);
String fileName = file.getName();
Long fileSize = file.length();
//創建上傳Object的Metadata
ObjectMetadata metadata = new ObjectMetadata();
metadata.setContentLength(is.available());
metadata.setCacheControl("no-cache");
metadata.setHeader("Pragma", "no-cache");
metadata.setContentEncoding("utf-8");
metadata.setContentType(getContentType(fileName));
metadata.setContentDisposition("filename/filesize=" + fileName + "/" + fileSize + "Byte.");
//上傳文件
PutObjectResult putResult = client.putObject(bucketName, diskName + fileName, is, metadata);
//解析結果
resultStr = putResult.getETag();
} catch (Exception e) {
LOG.error("上傳阿里雲OSS服務器異常." + e.getMessage(), e);
}
return resultStr;
}
/**
* 根據key獲取OSS服務器上的文件輸入流
* @param client OSS客戶端
* @param bucketName bucket名稱
* @param diskName 文件路徑
* @param key Bucket下的文件的路徑名+文件名
*/
public static final InputStream getOSS2InputStream(OSSClient client, String bucketName, String diskName, String key){
OSSObject ossObj = client.getObject(bucketName, diskName + key);
return ossObj.getObjectContent();
}
/**
* 根據key刪除OSS服務器上的文件
* @param client OSS客戶端
* @param bucketName bucket名稱
* @param diskName 文件路徑
* @param key Bucket下的文件的路徑名+文件名
*/
public static void deleteFile(OSSClient client, String bucketName, String diskName, String key){
client.deleteObject(bucketName, diskName + key);
LOG.info("刪除" + bucketName + "下的文件" + diskName + key + "成功");
}
/**
* 通過文件名判斷並獲取OSS服務文件上傳時文件的contentType
* @param fileName 文件名
* @return 文件的contentType
*/
public static final String getContentType(String fileName){
String fileExtension = fileName.substring(fileName.lastIndexOf("."));
if("bmp".equalsIgnoreCase(fileExtension)) return "image/bmp";
if("gif".equalsIgnoreCase(fileExtension)) return "image/gif";
if("jpeg".equalsIgnoreCase(fileExtension) || "jpg".equalsIgnoreCase(fileExtension) || "png".equalsIgnoreCase(fileExtension) ) return "image/jpeg";
if("html".equalsIgnoreCase(fileExtension)) return "text/html";
if("txt".equalsIgnoreCase(fileExtension)) return "text/plain";
if("vsd".equalsIgnoreCase(fileExtension)) return "application/vnd.visio";
if("ppt".equalsIgnoreCase(fileExtension) || "pptx".equalsIgnoreCase(fileExtension)) return "application/vnd.ms-powerpoint";
if("doc".equalsIgnoreCase(fileExtension) || "docx".equalsIgnoreCase(fileExtension)) return "application/msword";
if("xml".equalsIgnoreCase(fileExtension)) return "text/xml";
return "text/html";
}
}
代碼對應測試代碼junit如下:
package my.demo.java.z.aliyun.oss;
import static org.junit.Assert.assertEquals;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.aliyun.oss.OSSClient;
public class OSSUnitTest {
//log
private static final Logger LOG = LoggerFactory.getLogger(OSSUnitTest.class);
private OSSUnit ossunit = null;
private OSSClient client = null;
private String bucketName = "oss-test-my";
@Before
public void initUnit(){
ossunit = new OSSUnit();
client = OSSUnit.getOSSClient();
}
@Test
public void testCreateBucket() {
String bucketName = "oss-test-my";
//創建bucket
assertEquals(true, OSSUnit.createBucket(client, bucketName));
}
@Test
public void testDeleteBucket(){
String bucketName = "oss-test-my";
//刪除bucket
OSSUnit.deleteBucket(client, bucketName);
//console log :刪除oss-test-myBucket成功
}
@Test
public void testUploadObject2OSS(){
//上傳文件
String flilePathName = "C:/Users/Tony_tian/Desktop/csdnimg/preossimg.jpg";
File file = new File(flilePathName);
String diskName = "datas/image/";
String md5key = OSSUnit.uploadObject2OSS(client, file, bucketName, diskName);
LOG.info("上傳後的文件MD5數字唯一簽名:" + md5key); //上傳後的文件MD5數字唯一簽名:A30B046A34EB326C4A3BBD784333B017
}
@Test
public void testGetOSS2InputStream(){
//獲取文件
try {
BufferedInputStream bis = new BufferedInputStream(OSSUnit.getOSS2InputStream(client, bucketName, "datas/image/", "preossimg.jpg"));
String resfile = "C:/Users/Tony_tian/Desktop/csdnimg/preossimg_res.jpg";
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(new File(resfile)));
int itemp = 0;
while((itemp = bis.read()) != -1){
bos.write(itemp);
}
LOG.info("文件獲取成功"); //console log :文件獲取成功
bis.close();
bos.close();
} catch (Exception e) {
LOG.error("從OSS獲取文件失敗:" + e.getMessage(), e);
}
}
@Test
public void testDeleteFile(){
//注:文件夾下只有一個文件,則文件夾也會一起刪除;如果多個文件,只會刪除指定文件名的文件
//刪除文件
OSSUnit.deleteFile(client, bucketName, "datas/image/", "preossimg.jpg");
//console log : 刪除oss-test-my下的文件datas/image/preossimg.jpg成功
}
}
部分效果圖:
新建Bucket(Bucket權限:私有,公開需手動設置)前後和刪除Bucket:
上傳文件前後即刪除文件:
注:文件夾下只有一個文件,則文件夾也會一起刪除;如果多個文件,只會刪除指定文件名的文件
上邊記錄爲私有文件的獲取,如果要獲取“Bucket權限:公共讀”的就很簡單了:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Aliyun-OSS</title>
<meta name="keywords" content="Aliyun-OSS"/>
<meta name="description" content="Aliyun-OSS" />
<!-- <link rel="stylesheet" href="${serverprc }/static/css/common.css" />
<script type="text/javascript" src="${serverprc }/static/js/common.js" charset="utf-8"></script> -->
</head>
<body>
<div>
Bucket權限:公共讀的圖片:<img src="http://tsxs-datas.oss-cn-beijing.aliyuncs.com/image/public/tsxs_title_logo.ico"/>
</div>
</body>
</html>
打開效果: