因为工作需要,最近在网上查的很多有关此方面的资料,最后完成了此功能,写下来作为笔记。
前期准备:
1.获取到亚马逊云服务的ACCESS_KEY,SECRET_KEY,BUCKET_NAME(桶名),REGION(云服务所属的地区),PATH(存储在云服务的路径)。
2.和前端规定好要传的图片的格式,因为我这边规定好的格式是bs64,所以要先转换成
MultipartFile在进行上传。并且平常的一般上传都是先存储在本地,然后在上传。因为我们这个需求不需要存储在本地,所以我们这边是前端传过来图片的bs64,然后直接进行上传,不存储在本地.
代码阶段:
controller层:
/**
* 图片上传
*/
@ApiOperation("图片上传")
@RequestMapping(value = "uploading", method = RequestMethod.POST)
public RestResponse uploading(@RequestBody @Valid GatewayRequest<PutRequest> rq) {
String apiName = "图片上传";
KycPutRequest content = rq.getContent();
RestResponse restResponse = null;
try {
restResponse = ManageService.upload(content);
}catch (Exception e){
log.error("[ERROR|{}][Controller|put] 异常[{}]", apiName, e);
restResponse=RestResponse.error();
}
return restResponse;
}
serviceImpl层:
@Override
public RestResponse upload(KycPutRequest content) throws Exception {
String bs64 = "data:image/png;base64," + content.getBase64Data();//base64Data就是接受前端的bs64的参数,string类型的。
MultipartFile multipartFile = BASE64DecodedMultipartFile.base64ToMultipart(bs64);
log.info("multipartfile:"+multipartFile);
if (multipartFile==null){
return RestResponse.error("转化失败");
}
String downloadFile = FileUtils.uploadFile(multipartFile);
log.info("url:"+downloadFile);
return RestResponse.success(downloadFile);
}
bs64转MultipartFile格式:
package com.gigaiot.bc.core.utils;
import org.springframework.web.multipart.MultipartFile;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
/**
* @ClassName BASE64DecodedMultipartFile
* @Description TODO
* @Author Uncle
* @Date 2021/05/25 17:17
* @Version 1.0
*/
public class BASE64DecodedMultipartFile implements MultipartFile {
private final byte[] imgContent;
private final String header;
public BASE64DecodedMultipartFile(byte[] imgContent, String header) {
this.imgContent = imgContent;
this.header = header.split(";")[0];
}
@Override
public String getName() {
// TODO - implementation depends on your requirements
return System.currentTimeMillis() + Math.random() + "." + header.split("/")[1];
}
@Override
public String getOriginalFilename() {
// TODO - implementation depends on your requirements
return System.currentTimeMillis() + (int) Math.random() * 10000 + "." + header.split("/")[1];
}
@Override
public String getContentType() {
// TODO - implementation depends on your requirements
return header.split(":")[1];
}
@Override
public boolean isEmpty() {
return imgContent == null || imgContent.length == 0;
}
@Override
public long getSize() {
return imgContent.length;
}
@Override
public byte[] getBytes() throws IOException {
return imgContent;
}
@Override
public InputStream getInputStream() throws IOException {
return new ByteArrayInputStream(imgContent);
}
@Override
public void transferTo(File dest) throws IOException, IllegalStateException {
new FileOutputStream(dest).write(imgContent);
}
/**
* base64转MultipartFile文件
*
* @param base64
* @return
*/
public static MultipartFile base64ToMultipart(String base64) {
try {
String[] baseStrs = base64.split(",");
BASE64Decoder decoder = new BASE64Decoder();
byte[] b = new byte[0];
b = decoder.decodeBuffer(baseStrs[1]);
for (int i = 0; i < b.length; ++i) {
if (b[i] < 0) {
b[i] += 256;
}
}
return new BASE64DecodedMultipartFile(b, baseStrs[0]);
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
/**
* base64转MultipartFile文件
*
* @param base64
* @return
*/
public static MultipartFile base64ToMultipartOnt(String base64) {
try {
BASE64Decoder decoder = new BASE64Decoder();
byte[] b = new byte[0];
b = decoder.decodeBuffer(base64);
for (int i = 0; i < b.length; ++i) {
if (b[i] < 0) {
b[i] += 256;
}
}
return new BASE64DecodedMultipartFile(b, base64);
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
/**
* 本地图片转换成base64字符串
*
* @param imgFile 图片本地路径
* @return
* @author uncle
* @dateTime 2018-02-23 14:40:46
*/
public static String ImageToBase64ByLocal(String imgFile) {// 将图片文件转化为字节数组字符串,并对其进行Base64编码处理
InputStream in = null;
byte[] data = null;
// 读取图片字节数组
try {
in = new FileInputStream(imgFile);
data = new byte[in.available()];
in.read(data);
in.close();
} catch (IOException e) {
e.printStackTrace();
}
// 对字节数组Base64编码
BASE64Encoder encoder = new BASE64Encoder();
return encoder.encode(data);// 返回Base64编码过的字节数组字符串
}
/**
* 在线图片转换成base64字符串
*
* @param imgURL 图片线上路径
* @return
* @author uncle
* @dateTime 2018-02-23 14:43:18
*/
public static String ImageToBase64ByOnline(String imgURL) {
ByteArrayOutputStream data = getByteArrayOutputStream(imgURL);
// 对字节数组Base64编码
BASE64Encoder encoder = new BASE64Encoder();
return encoder.encode(data.toByteArray());
}
public static byte[] ImageToByteByOnline(String imgURL) {
ByteArrayOutputStream data = getByteArrayOutputStream(imgURL);
return data.toByteArray();
}
private static ByteArrayOutputStream getByteArrayOutputStream(String imgURL) {
ByteArrayOutputStream data = new ByteArrayOutputStream();
try {
// 创建URL
URL url = new URL(imgURL);
byte[] by = new byte[1024];
// 创建链接
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(5000);
InputStream is = conn.getInputStream();
// 将内容读取内存中
int len = -1;
while ((len = is.read(by)) != -1) {
data.write(by, 0, len);
}
// 关闭流
is.close();
} catch (IOException e) {
e.printStackTrace();
}
return data;
}
/**
* base64字符串转换成图片
*
* @param imgStr base64字符串
* @param imgFilePath 图片存放路径
* @return
* @author uncle
* @dateTime 2018-02-23 14:42:17
*/
public static boolean Base64ToImage(String imgStr, String imgFilePath) { // 对字节数组字符串进行Base64解码并生成图片
if (imgStr == null) {
// 图像数据为空
return false;
}
BASE64Decoder decoder = new BASE64Decoder();
try {
// Base64解码
byte[] b = decoder.decodeBuffer(imgStr);
for (int i = 0; i < b.length; ++i) {
if (b[i] < 0) {// 调整异常数据
b[i] += 256;
}
}
OutputStream out = new FileOutputStream(imgFilePath);
out.write(b);
out.flush();
out.close();
return true;
} catch (Exception e) {
return false;
}
}
/**
* 功能描述 :MultipartFile转file对象
*
* @param
* @return
* @author uncle
* @date 2019/5/10 18:30
*/
public static File MultipartFileToFile(MultipartFile multiFile) {
// 获取文件名
String fileName = multiFile.getOriginalFilename();
// 获取文件后缀
String prefix = fileName.substring(fileName.lastIndexOf("."));
// 用当前时间作为文件名,防止生成的临时文件重复
try {
File file = File.createTempFile(System.currentTimeMillis() + "", prefix);
multiFile.transferTo(file);
return file;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
aws图片上传工具类:
package com.gigaiot.bc.core.utils;
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3ClientBuilder;
import com.amazonaws.services.s3.model.*;
import com.sun.jna.platform.win32.WinNT;
import org.aspectj.weaver.ast.Var;
import org.springframework.web.multipart.MultipartFile;
import javax.xml.bind.SchemaOutputResolver;
import java.io.IOException;
import java.net.URL;
import java.text.SimpleDateFormat;
import java.util.Date;
public class FileUtils {
//密匙
static final String ACCESS_KEY ="***";
static final String SECRET_KEY ="*****";
//储存桶的名称
static final String BUCKET_NAME ="****";
//所属地区
static final String REGION = "ap-east-1";
//储存路径,不同太在意我的,填你自己想要储存的路径
static final String PATH="/test";
static final BasicAWSCredentials awsCreds = new BasicAWSCredentials(ACCESS_KEY, SECRET_KEY);
static final AmazonS3 s3 = AmazonS3ClientBuilder.standard()
.withCredentials(new AWSStaticCredentialsProvider(awsCreds))
//设置服务器所属地区
.withRegion(Regions.AP_SOUTHEAST_1)
.build();
/**
* 上传到文件返回一个文件储存后的路径
* @param multipartFile
* @return
* @throws Exception
*/
public static String uploadFile(MultipartFile multipartFile) {
if (multipartFile.isEmpty()) {
return "文件为空";
}
Date date = new Date();
SimpleDateFormat formatter_yyyy = new SimpleDateFormat("yyyy");
SimpleDateFormat formatter_MM = new SimpleDateFormat("MM");
//在随机名前加上年月
String s3FilePath =PATH + "/" +formatter_yyyy.format(date) + "/" + formatter_MM.format(date) + "/" + multipartFile.getOriginalFilename();
System.out.println("照片:"+s3FilePath);
ObjectMetadata metadata = new ObjectMetadata();
metadata.setContentType(multipartFile.getContentType());
metadata.setContentLength(multipartFile.getSize());
try {
//开始上传文件
//1.不支持公网访问
//s3.putObject(BUCKET_NAME, s3FilePath, multipartFile.getInputStream(), metadata)
//2.支付公网访问
PutObjectResult putObjectResult=s3.putObject(new PutObjectRequest(BUCKET_NAME, s3FilePath, multipartFile.getInputStream(), metadata)
.withCannedAcl(CannedAccessControlList.PublicRead));
putObjectResult.getContentMd5();
System.err.println("上传完成__文件位置为" + putObjectResult);
GeneratePresignedUrlRequest httpRequest = new GeneratePresignedUrlRequest(BUCKET_NAME, s3FilePath);
URL url = s3.generatePresignedUrl(httpRequest);
return url.toString();
} catch (Exception e) {
e.printStackTrace();
}
//返回文件位置
return null;
}
/**
* 用过文件路径获取文件下载地址
* @param path
* @return
*/
public static String downloadFile(String path){
try {
GeneratePresignedUrlRequest httpRequest = new GeneratePresignedUrlRequest(BUCKET_NAME, path);
return s3.generatePresignedUrl(httpRequest).toString()+path;
}catch (Exception e){
e.printStackTrace();
}
return "获取失败";
}
}
所需要的架包:
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-java-sdk-s3</artifactId>
<version>1.11.34</version>
</dependency>
注意:
1.发现的问题是:如果部署的aws地区为香港,按文档的指示应该REGION为ap-east-1。但是我在
并没有发现香港地区的区域代码,所以刚刚开始的时候以为是aws的版本号问题,在更换几个版本号之后,还是无效,所以就采取了这种方法
这样代码是没有报错,但是运行后,日志显示,系统总将这个地区识别为us-east-2地区,所以总数失败,最后找到相关的工作人员,更新到了最新的aws架包,v2的架包还是无效,没有找到。所以迫于无奈的情况下,运维将服务器部署到了新加坡节点,立刻就成功了,这个问题目前还是没有解决,为什么会出现这种情况,希望哪位大神可以告诉一下。