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springboot+thymeleaf整合阿里云OOS對象存儲圖片的實現(xiàn)

更新時間：2022年05月10日 10:30:47 作者：程序員小徐同學(xué)

本文主要介紹了springboot+thymeleaf整合阿里云OOS對象存儲圖片的實現(xiàn)，文中通過示例代碼介紹的非常詳細，對大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價值，需要的朋友們下面隨著小編來一起學(xué)習(xí)學(xué)習(xí)吧

1.先引入pom依賴

  <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
            <version>3.9.1</version>
        </dependency>

2.編寫前端thymleeaf代碼tetsfile.html

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<style>

</style>

<body>

<img  th:src="${url}" alt="" width="300px">

<form action="fileUpload" method="post" enctype="multipart/form-data">
    <input type="file" name="fileName">
    <input type="submit">
</form>
</body>
</html>

3.service層編寫

下面的代碼需要4個參數(shù)

package com.xuda.ntf.service;

import com.aliyun.oss.*;
import com.aliyun.oss.model.*;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.io.File;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.UUID;
/**
 * @author ：程序員徐大大
 * @description：TODO
 * @date ：2022-05-07 10:33
 */
@Service
@Slf4j
public class AliyunOSSUtilService {

    /**
     * 這五個分別是什么下面會說
     * aliyun.oss.endpoint=oss-cn-shanghai.aliyuncs.com
     * aliyun.oss.accessKeyId=L相關(guān)密鑰
     * aliyun.oss.secret=eF0相關(guān)密鑰
     * aliyun.oss.bucket=yygh-xuda
     */
    public static final String endpoint = "oss-cn-shanghai.aliyuncs.com";
    public static final String accessKeyId = "LTA個人密鑰";
    public static final String accessKeySecret = "eF0UmiWp2回傳密鑰";
    public static final String bucketName = "yygh-xuda回傳name";
    public static final String fileHost = "2022/cff"; //圖片頭部

    private static SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");

    /**
     * 上傳
     *
     * @param file
     * @return
     */
    public String upload(File file) {
        log.info("=========>OSS文件上傳開始：" + file.getName());
//        String fileHost=constantProperties.getFilehost();
        System.out.println(endpoint + "endpoint");
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        String dateStr = format.format(new Date());

        if (null == file) {
            return null;
        }

        OSSClient ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
        try {
            //容器不存在，就創(chuàng)建
            if (!ossClient.doesBucketExist(bucketName)) {
                ossClient.createBucket(bucketName);
                CreateBucketRequest createBucketRequest = new CreateBucketRequest(bucketName);
                createBucketRequest.setCannedACL(CannedAccessControlList.PublicRead);
                ossClient.createBucket(createBucketRequest);
            }
            //創(chuàng)建文件路徑
            String fileUrl = fileHost + "/" + (dateStr + "/" + UUID.randomUUID().toString().replace("-", "") + "-" + file.getName());
            //上傳文件
            PutObjectResult result = ossClient.putObject(new PutObjectRequest(bucketName, fileUrl, file));
            //設(shè)置權(quán)限 這里是公開讀
            ossClient.setBucketAcl(bucketName, CannedAccessControlList.PublicRead);
            if (null != result) {
                log.info("==========>OSS文件上傳成功,OSS地址：" + fileUrl);
                return fileUrl;
            }
        } catch (OSSException oe) {
            log.error(oe.getMessage());
        } catch (ClientException ce) {
            log.error(ce.getMessage());
        } finally {
            //關(guān)閉
            ossClient.shutdown();
        }
        return null;
    }


    /**
     * @desc 查看文件列表
     */
    public List<OSSObjectSummary> getObjectList() {
        OSS ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
        // 設(shè)置最大個數(shù)。
        final int maxKeys = 200;
        // 列舉文件。
        ListObjectsRequest listObjectsRequest = new ListObjectsRequest(bucketName);
        listObjectsRequest.setPrefix(fileHost + "/");
        ObjectListing objectListing = ossClient.listObjects(listObjectsRequest.withMaxKeys(maxKeys));
        List<OSSObjectSummary> sums = objectListing.getObjectSummaries();
        return sums;
    }

    /**
     * 獲取文件臨時url
     *
     * @param objectName    oss中的文件名
     * @param
     */
    public String getUrl(String objectName ,long effectiveTime) {
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        // 設(shè)置URL過期時間
        Date expiration = new Date(new Date().getTime() + effectiveTime);
        GeneratePresignedUrlRequest generatePresignedUrlRequest ;
        generatePresignedUrlRequest =new GeneratePresignedUrlRequest(bucketName, objectName);
        generatePresignedUrlRequest.setExpiration(expiration);
        URL url = ossClient.generatePresignedUrl(generatePresignedUrlRequest);
        return url.toString();
    }


    /**
     * 刪除OSS中的單個文件
     *
     * @param objectName 唯一objectName（在oss中的文件名字）
     */
    public void delete(String objectName) {
        try {
            // 創(chuàng)建OSSClient實例。
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
            // 刪除文件。
            ossClient.deleteObject(bucketName, objectName);
            // 關(guān)閉OSSClient。
            ossClient.shutdown();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

4.controller層編寫

寫到代碼中取

package com.xuda.ntf.controller;

import com.aliyun.oss.model.OSSObjectSummary;
import com.xuda.ntf.service.AliyunOSSUtilService;
import com.xuda.ntf.service.FileService;
import com.xuda.ntf.utils.JsonResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * @author ：程序員徐大大
 * @description：TODO
 * @date ：2022-05-07 9:39
 */
@Slf4j
@Controller
public class FileApiController {

    String uploadUrl = "";
    @Autowired
    private AliyunOSSUtilService aliyunOSSUtil;

    /**
     * 查看圖片
     *
     */
    @RequestMapping("/getAllPic")
    public String getAllPic(Model model){
//        Hashtable hashtable = new Hashtable();
        // 顯示圖片
        ArrayList<String> listStr = new ArrayList<>();
        List<OSSObjectSummary> list = aliyunOSSUtil.getObjectList();
        String url = aliyunOSSUtil.getUrl(uploadUrl,5000);
       /* list.forEach(item -> {
//                    這個將自己上傳圖片得地址復(fù)制到這里來
                    listStr.add("https://yygh-xuda.oss-cn-shanghai.aliyuncs.com/"+item.getKey());

                }
        );*/
        model.addAttribute("fileNames",listStr);
        model.addAttribute("url",url);
        return "testfile.html";
    }

    /**
     *
     * @param file 要上傳的文件
     * @return
     */
    @RequestMapping("/fileUpload")
    public String upload(@RequestParam("fileName") MultipartFile file,Model model){
        try {
            if(null != file){
                String filename = file.getOriginalFilename();
                if(!"".equals(filename.trim())){
                    File newFile = new File(filename);
                    FileOutputStream os = new FileOutputStream(newFile);
                    os.write(file.getBytes());
                    os.close();
                    file.transferTo(newFile);
                    //上傳到OSS
                    uploadUrl = aliyunOSSUtil.upload(newFile);
                    System.out.println(uploadUrl);
                    model.addAttribute("file",uploadUrl);
                }
            }
        }catch (Exception ex){
            ex.printStackTrace();
        }
        return "forward:getAllPic";
    }

}

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