使用阿里雲服務器（OOS）實現圖片上傳

時間 2019-11-17

原文原文鏈接

一：頁面　html

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>

<base href="<%=basePath%>">
</head>
<body>
    <form action="<%=basePath%>/aly/aliyun/headImgUpload" method="post" enctype="multipart/form-data">
        <input type="file" name="file">
        <input type="submit" value="提交">
    </form>
</body>
</html>

二：後臺使用的是spring的文件接受類使用MultipartFile接收java

@Controller
@RequestMapping("/aly/aliyun")
public class ALiYunOSSController {

    @RequestMapping(value = "/headImgUpload", method = RequestMethod.POST)
    @ResponseBody
    public String headImgUpload(HttpServletRequest request, MultipartFile file)throws Exception {
        String head = updateHead(file);
        return head;
    }

    public String updateHead(MultipartFile file) throws Exception {
        if (file == null || file.getSize() <= 0) {
            throw new Exception("頭像不能爲空");
        }
        String  nameHz= file.getOriginalFilename(); //上傳的文件名 + 後綴    如  asd.png
        String type = "";
        if(nameHz.contains(".png") || nameHz.contains(".jpg")){
            type="/img";
        }
        if(nameHz.contains(".mp4") || nameHz.contains(".ogv")){
            type="/video";
        }else {
            type="/file";
        }
        OssClienUtils ossClient = new OssClienUtils();
        String keyName = ossClient.uploadImg2Oss(file,type);
        String imgUrl = ossClient.getImgUrl(keyName);

        return imgUrl;
    }

}

三：阿里雲OSS 封裝的工具類web

package com.szy.project.utils;

import java.io.*;
import java.net.URL;
import java.util.Date;
import java.util.Random;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.aliyun.oss.OSSClient;
import com.aliyun.oss.model.ObjectMetadata;
import com.aliyun.oss.model.PutObjectResult;
import org.springframework.util.StringUtils;
import org.springframework.web.multipart.MultipartFile;
 
/**
 * 阿里雲 OSS文件類  參考文檔  https://help.aliyun.com/product/31815.html?spm=5176.750001.2.8.SZvzsM
 *
 * @author  sunzhenyang
 */
public class OssClienUtils {
 
  Log log = LogFactory.getLog(OssClienUtils.class);
  // endpoint以北京爲例，其它region請按實際狀況填寫
  private String endpoint = "http://oss-cn-beijing.aliyuncs.com";
  // accessKey和accessKeySecret 爲購買阿里雲服務時官方提供
  private String accessKeyId = "LTAIuB5R5******";
  private String accessKeySecret = "56DOZQ2yRPE8n*****";
  //空間
  private String bucketName = "image";
  
  //文件存儲目錄    (上傳時在key前面加上目錄 默認建立)
  private String date = "img/";
  
 
  private OSSClient ossClient;
 
  public OssClienUtils() {
    ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
  }
 
  /**
   * 銷燬
   */
  public void destory() {
    ossClient.shutdown();
  }
 
  /**
   * 上傳圖片 直接獲取本地資源路徑
   *
   * @param url
   * @throws Exception 
   */
  public void uploadImg2Oss(String url) throws Exception {
    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 Exception("圖片上傳失敗");
    }
  }
 
 /**
  * 上傳圖片
  * @param file
  * @return    key   可根據key獲取上到到服務器的志願和刪除等操做
  * @throws Exception
  */
  public String uploadImg2Oss(MultipartFile file,String typeDate) throws Exception {
      this.date=typeDate;
//    if (file.getSize() > 1024 * 1024) {
//      throw new Exception("上傳圖片大小不能超過1M！");
//    }
    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 Exception("圖片上傳失敗");
    }
  }
 
  
  /**
   * 上傳到OSS服務器  若是同名文件會覆蓋服務器上的
   *
   * @param instream 文件流
   * @param fileName 文件名稱 包括後綴名
   * @return 出錯返回"" ,惟一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);
      //上傳文件
      PutObjectResult putResult = ossClient.putObject(bucketName, date + fileName, instream, objectMetadata);
      ret = putResult.getETag();
    } catch (IOException e) {
      log.error(e.getMessage(), e);
    } finally {
      try {
        if (instream != null) {
          instream.close();
        }
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
    return ret;
  }
  
  /**
   * 得到圖片路徑
   *
   * @param fileUrl
   * @return
   */
  public String getImgUrl(String fileUrl) {
    if (!StringUtils.isEmpty(fileUrl)) {
      String[] split = fileUrl.split("/");
      return this.getUrl(this.date + split[split.length - 1]);
    }
    return null;
  }
 

 
  /**
   * Description: 判斷OSS服務文件上傳時文件的contentType
   *
   * @param FilenameExtension 文件後綴
   * @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";
  }
 
  /**
   * 得到url連接
   *
   * @param key
   * @return
   */
  public String getUrl(String key) {
    // 設置URL過時時間爲10年  3600l* 1000*24*365*10
    Date expiration = new Date(new Date().getTime() + 3600l * 1000 * 24 * 365 * 10);
    // 生成URL
    URL url = ossClient.generatePresignedUrl(bucketName, key, expiration);
    if (url != null) {
      return url.toString();
    }
    return null;
  }
  
  /**
   * 刪除單個文件
   */
  public void delFile(String key){
      ossClient.deleteObject(bucketName, key);
  }
  
}