1. 程式人生 > >java上傳圖片到阿里雲oss雲端儲存中,返回url連結地址

java上傳圖片到阿里雲oss雲端儲存中,返回url連結地址

前言:最近要做一個入口網站,圖片較多,所以要採用圖片伺服器,我這裡採用的是阿里雲的oss雲端儲存,1.個數無限制,2.阿里雲備份3,效能也不錯.
oss對於圖片的處理,也有api,但是我這裡上傳的圖片只需要加個水印,所以只需要在oss那邊設定一個樣式,那麼每次上傳的圖片都會帶水印,其餘的圖片的處理,沒使用過,不太瞭解,但是oss提供在url中直接對圖片進行處理,但是這種圖片處理的不太好 (個人覺得).

使用前pom.xml中引入:

		<!-- oss -->
		<dependency>
			<groupId>com.aliyun.oss</groupId>
			<artifactId>aliyun-sdk-oss</artifactId>
			<version>2.7.0</version>
		</dependency>

工具類(需要的引數,自己去開通服務,自己去設定,就懂了):
import java.io.*;
import java.net.URL;
import java.util.Date;
import java.util.Random;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.aliyun.oss.OSSClient;
import com.aliyun.oss.model.ObjectMetadata;
import com.aliyun.oss.model.PutObjectResult;

import weisheng.bizhijia.oss.ImgException;

import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.web.multipart.MultipartFile;

/**
 * 阿里雲 OSS工具類
 * 
 * @author Monkey
 * @date 2017年9月30日下午3:38:09
 * @version 1.0
 */
@Controller
public class OSSClientUtil {

	public static final Logger logger = LoggerFactory.getLogger(OSSClientUtil.class);
	// endpoint
	private String endpoint = "";
	// accessKey
	private String accessKeyId = "";
	private String accessKeySecret = "";
	// 空間
	private String bucketName = "";
	// 檔案儲存目錄
	private String filedir = "";

	private OSSClient ossClient;

	public OSSClientUtil() {
		ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
	}

	/**
	 * 初始化
	 */
	public void init() {
		ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
	}

	/**
	 * 銷燬
	 */
	public void destory() {
		ossClient.shutdown();
	}

	/**
	 * 上傳圖片
	 *
	 * @param url
	 * @throws ImgException
	 */
	public void uploadImg2Oss(String url) throws ImgException {
		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 ImgException("圖片上傳失敗");
		}
	}

	public String uploadImg2Oss(MultipartFile file) throws ImgException {
		if (file.getSize() > 10 * 1024 * 1024) {
			throw new ImgException("上傳圖片大小不能超過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, name);
			return name;
		} catch (Exception e) {
			throw new ImgException("圖片上傳失敗");
		}
	}

	/**
	 * 獲得圖片路徑
	 *
	 * @param fileUrl
	 * @return
	 */
	public String getImgUrl(String fileUrl) {
		System.out.println(fileUrl);
		if (!StringUtils.isEmpty(fileUrl)) {
			String[] split = fileUrl.split("/");
			return this.getUrl(this.filedir + split[split.length - 1]);
		}
		return null;
	}

	/**
	 * 上傳到OSS伺服器 如果同名檔案會覆蓋伺服器上的
	 *
	 * @param instream
	 *            檔案流
	 * @param fileName
	 *            檔名稱 包括字尾名
	 * @return 出錯返回"" ,唯一MD5數字簽名
	 */
	public String uploadFile2OSS(InputStream instream, String fileName) {
		String ret = "";
		try {
			// 建立上傳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);
			// 上傳檔案
			PutObjectResult putResult = ossClient.putObject(bucketName, filedir + fileName, instream, objectMetadata);
			ret = putResult.getETag();
		} catch (IOException e) {
			logger.error(e.getMessage(), e);
		} finally {
			try {
				if (instream != null) {
					instream.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return ret;
	}

	/**
	 * Description: 判斷OSS服務檔案上傳時檔案的contentType
	 *
	 * @param FilenameExtension
	 *            檔案字尾
	 * @return String
	 */
	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";
	}

	/**
	 * 獲得url連結
	 *
	 * @param key
	 * @return
	 */
	public String getUrl(String key) {
		// 設定URL過期時間為10年 3600l* 1000*24*365*10

		Date expiration = new Date(System.currentTimeMillis() + 3600L * 1000 * 24 * 365 * 10);
		// 生成URL
		URL url = ossClient.generatePresignedUrl(bucketName, key, expiration);
		if (url != null) {
			return url.toString();
		}
		return null;
	}
}

SSM框架使用:

controller:

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import com.alibaba.fastjson.JSONObject;

import weisheng.bizhijia.service.UpImgService;
/**
 * 圖片上傳
 * @author Monkey
 * @date 2017年9月30日下午3:37:00
 * @version 1.0
 */
@Controller
public class UpImgController {
	public static final Logger logger = LoggerFactory.getLogger(UpImgController.class);
	@Autowired
	private UpImgService upImgService;
	
	@RequestMapping(value = "/headImgUpload", produces = "text/html;charset=UTF-8")
	@ResponseBody
	public String headImgUpload(HttpServletRequest request, MultipartFile file) {
		Map<String, Object> value = new HashMap<String, Object>();
		try {
			String url = upImgService.updateHead(file);
			logger.debug("圖片路徑{}",url);
			value.put("data", url);
			value.put("code", 0);
			value.put("msg", "圖片上傳成功");
		} catch (Exception e) {
			e.printStackTrace();
			value.put("code", 2000);
			value.put("msg", "圖片上傳成功");
		}
		return JSONObject.toJSONString(value);
	}
	
}

service:
import org.springframework.web.multipart.MultipartFile;

import weisheng.bizhijia.oss.ImgException;

public interface UpImgService {

	String updateHead(MultipartFile file)throws ImgException;
}
serviceImpl:
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import weisheng.bizhijia.oss.ImgException;
import weisheng.bizhijia.oss.OSSClientUtil;
import weisheng.bizhijia.service.UpImgService;
@Service
public class UpImgServiceImpl implements UpImgService {
	public static final Logger logger = LoggerFactory.getLogger(UpImgServiceImpl.class);
	@Override
	public String updateHead(MultipartFile file) throws ImgException {
	    if (file == null || file.getSize() <= 0) {
		      throw new ImgException("file不能為空");
		    }
	        OSSClientUtil ossClient=new OSSClientUtil();
		    String name = ossClient.uploadImg2Oss(file);
		    String imgUrl = ossClient.getImgUrl(name);
		    String[] split = imgUrl.split("\\?");
		    return split[0];
	}
}