springboot+thymeleaf整合阿里云OOS对象存储图片的实现

2024-04-02 19:55

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1.先引入pom依赖

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

2.编写前端thymleeaf代码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:class="lazy" data-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层编写

下面的代码需要4个参数

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;

@Service
@Slf4j
public class AliyunOSSUtilService {

    
    public static final String endpoint = "oss-cn-shanghai.aliyuncs.com";
    public static final String accessKeyId = "LTA个人密钥";
    public static final String accessKeySecret = "eF0UmiWp2回传密钥";
    public static final String bucketName = "yygh-xuda回传name";
    public static final String fileHost = "2022/cff"; //图片头部

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

    
    public String upload(File file) {
        log.info("=========>OSS文件上传开始：" + 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，就创建
            if (!ossClient.doesBucketExist(bucketName)) {
                ossClient.createBucket(bucketName);
                CreateBucketRequest createBucketRequest = new CreateBucketRequest(bucketName);
                createBucketRequest.setCannedACL(CannedAccessControlList.PublicRead);
                ossClient.createBucket(createBucketRequest);
            }
            //创建文件路径
            String fileUrl = fileHost + "/" + (dateStr + "/" + UUID.randomUUID().toString().replace("-", "") + "-" + file.getName());
            //上传文件
            PutObjectResult result = ossClient.putObject(new PutObjectRequest(bucketName, fileUrl, file));
            //设置权限 这里是公开读
            ossClient.setBucketAcl(bucketName, CannedAccessControlList.PublicRead);
            if (null != result) {
                log.info("==========>OSS文件上传成功,OSS地址：" + fileUrl);
                return fileUrl;
            }
        } catch (OSSException oe) {
            log.error(oe.getMessage());
        } catch (ClientException ce) {
            log.error(ce.getMessage());
        } finally {
            //关闭
            ossClient.shutdown();
        }
        return null;
    }


    
    public List<OSSObjectSummary> getObjectList() {
        OSS ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
        // 设置最大个数。
        final int maxKeys = 200;
        // 列举文件。
        ListObjectsRequest listObjectsRequest = new ListObjectsRequest(bucketName);
        listObjectsRequest.setPrefix(fileHost + "/");
        ObjectListing objectListing = ossClient.listObjects(listObjectsRequest.withMaxKeys(maxKeys));
        List<OSSObjectSummary> sums = objectListing.getObjectSummaries();
        return sums;
    }

    
    public String getUrl(String objectName ,long effectiveTime) {
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        // 设置URL过期时间
        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();
    }


    
    public void delete(String objectName) {
        try {
            // 创建OSSClient实例。
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
            // 删除文件。
            ossClient.deleteObject(bucketName, objectName);
            // 关闭OSSClient。
            ossClient.shutdown();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

4.controller层编写

写到代码中取

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;


@Slf4j
@Controller
public class FileApiController {

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

    
    @RequestMapping("/getAllPic")
    public String getAllPic(Model model){
//        Hashtable hashtable = new Hashtable();
        // 显示图片
        ArrayList<String> listStr = new ArrayList<>();
        List<OSSObjectSummary> list = aliyunOSSUtil.getObjectList();
        String url = aliyunOSSUtil.getUrl(uploadUrl,5000);
       
        model.addAttribute("fileNames",listStr);
        model.addAttribute("url",url);
        return "testfile.html";
    }

    
    @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);
                    //上传到OSS
                    uploadUrl = aliyunOSSUtil.upload(newFile);
                    System.out.println(uploadUrl);
                    model.addAttribute("file",uploadUrl);
                }
            }
        }catch (Exception ex){
            ex.printStackTrace();
        }
        return "forward:getAllPic";
    }

}