controller layer
@ApiOperation("上传")
@PostMapping("/upload")
//@RequiresRoles("admin")
public Result upload(
@ApiParam(value = "文件", required = true) @RequestParam("file") MultipartFile multipartFile,
@ApiParam(value = "是否加水印:0-不加,1-加")@RequestParam(defaultValue = "0") Integer isWaterMark
) {
Result result = new Result();
//将文件上传到腾讯云
try {
if (isWaterMark == 1) {
//加水印
multipartFile = WaterMarkUtils.addWorkMarkToMutipartFile(multipartFile, "找房快");
}
//上传腾讯云,返回随机文件名字
File file = MultipartFileUtil.multipartFileToFile(multipartFile);
String filename = TengXunOssUtil.uploadFile(file);
filename = TengXunOssUtil.URL_PREFIX + filename;//拼接访问路径和文件名
//删除本地临时文件
MultipartFileUtil.delteTempFile(file);
result.setCode(200);
result.setResult(filename);
result.setMessage("上传成功");
} catch (Exception e) {
log.info(e.getMessage(), e);
result.setCode(500);
result.setMessage("上传失败");
}
return result;
}
Image upload tool
import org.springframework.mock.web.MockMultipartFile;
import org.springframework.web.multipart.MultipartFile;
import javax.imageio.ImageIO;
import javax.imageio.stream.ImageOutputStream;
import javax.swing.*;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
/**
* @author
* @version 1.0
* @date 2021/1/6 15:40
*/
public class WaterMarkUtils {
/**
* 加图片水印 : 没有测试
*
* @param bufImg --BufferedImage 用来画图的宽高跟需要加水印的图片一样的空白图
* @param img --需要加水印的图片
* @param markImg --水印图片
* @param width --水印图片宽
* @param height --水印图片高
* @param x --水印相对于底片的x轴坐标(PS:左上角为(0,0))
* @param y --水印相对于底片的y轴坐标(PS:左上角为(0,0))
*/
public static void markPic(BufferedImage bufImg, Image img, Image markImg, int width, int height, int x, int y) {
//取到画笔
Graphics2D g = bufImg.createGraphics();
//画底片
g.drawImage(img, 0, 0, bufImg.getWidth(), bufImg.getHeight(), null);
//画水印位置
g.drawImage(markImg, x, y, width, height, null);
g.dispose();
}
/**
* 直接给multipartFile加上图片水印再进行保存图片的操作方便省事
*
* @param multipartFile
* 文件上传的对象
* @param markImg
* 水印文件的路径 如果是相对路径请使用相对路径new Image的方法,此处用的是url
* @return
* @throws IOException
* @author 高永强
* @version 2018年11月30日 上午11:15:56
*/
public static MultipartFile addPicMarkToMutipartFile(MultipartFile multipartFile,
String markImg) throws IOException {
// 获取图片文件名 xxx.png xxx
String originFileName = multipartFile.getOriginalFilename();
// 获取原图片后缀 png
int lastSplit = originFileName.lastIndexOf(".");
String suffix = originFileName.substring(lastSplit + 1);
// 获取图片原始信息
String dOriginFileName = multipartFile.getOriginalFilename();
String dContentType = multipartFile.getContentType();
// 是图片且不是gif才加水印
if (!suffix.equalsIgnoreCase("gif") && dContentType.contains("image")) {
// 获取水印图片
InputStream inputImg = multipartFile.getInputStream();
Image img = ImageIO.read(inputImg);
URL url = new URL(markImg);
// 创建url连接;
HttpURLConnection urlconn = (HttpURLConnection) url.openConnection();
urlconn.connect();
InputStream inputStream = urlconn.getInputStream();
Image mark = ImageIO.read(inputStream);
// 加图片水印
int imgWidth = img.getWidth(null);
int imgHeight = img.getHeight(null);
int markWidth = mark.getWidth(null);
int markHeight = mark.getHeight(null);
BufferedImage bufImg = new BufferedImage(imgWidth, imgHeight,
BufferedImage.TYPE_INT_RGB);
//水印的相对位置 ps：这里是右下角 水印宽为底片的四分之一 位置自己可以调整
markPic(bufImg, img, mark, imgWidth / 4, (imgWidth * markHeight) / (4 * markWidth),
imgWidth - imgWidth / 4, imgHeight - (imgWidth * markHeight) / (4 * markWidth));
ByteArrayOutputStream bs = new ByteArrayOutputStream();
ImageOutputStream imOut = ImageIO.createImageOutputStream(bs);
ImageIO.write(bufImg, suffix, imOut);
InputStream is = new ByteArrayInputStream(bs.toByteArray());
// 加水印后的文件上传
multipartFile = new MockMultipartFile(dOriginFileName, dOriginFileName, dContentType, is);
}
//返回加了水印的上传对象
return multipartFile;
}
/**
* 加文字水印
* @param bufImg --BufferedImage 用来画图的宽高跟需要加水印的图片一样的空白图
* @param img --需要加水印的图片
* @param text --水印文字
* @param font --字体
* @param degree --旋转角度
* @param color --颜色
* @param x --水印相对于底片的x轴坐标(PS:左上角为(0,0))
* @param y --水印相对于底片的y轴坐标(PS:左上角为(0,0))
* @author 高永强
* @version 2018年11月30日 上午11:39:57
*/
public static void markWord(BufferedImage bufImg, Image img, String text, Font font, Color color,Integer degree, int x, int y) {
//取到画笔
Graphics2D g = bufImg.createGraphics();
//画底片
g.drawImage(img, 0, 0, bufImg.getWidth(), bufImg.getHeight(), null);
g.setColor(color);//设置水印颜色
//g.setFont(font);//设置字体.设置字体后台linux系统中无法打印,故注释掉
float alpha = 0.5f;//设置水印透明度 默认为1.0 值越小颜色越浅
g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, alpha));//设置水印文字透明度
if (null != degree) {
g.rotate(Math.toRadians(degree),(double)bufImg.getWidth(),(double)bufImg.getHeight());//设置水印旋转
}
//位置
g.drawString(text, x, y);
JLabel label = new JLabel(text);
FontMetrics metrics = label.getFontMetrics(font);
int width = metrics.stringWidth(label.getText());//文字水印的宽
int srcImgHeight = bufImg.getHeight();
int srcImgWidth = bufImg.getWidth();
int rowsNumber = srcImgHeight/width+srcImgHeight%width;// 图片的高 除以 文字水印的宽 打印的行数(以文字水印的宽为间隔)
int columnsNumber = srcImgWidth/width+srcImgWidth%width;//图片的宽 除以 文字水印的宽 每行打印的列数(以文字水印的宽为间隔)
//防止图片太小而文字水印太长，所以至少打印一次
if(rowsNumber < 1){
rowsNumber = 1;
}
if(columnsNumber < 1){
columnsNumber = 1;
}
for(int j=0;j<rowsNumber;j++){
for(int i=0;i<columnsNumber;i++){
g.drawString(text, i*width + j*width, -i*width + j*width);//画出水印,并设置水印位置
}
}
g.dispose();// 释放资源
}
/**
* 直接给multipartFile加上文字水印再进行保存图片的操作方便省事
*
* @param multipartFile
* 文件上传的对象
* @param markImg
* 水印文件的路径 如果是相对路径请使用相对路径new Image的方法,此处用的是url
* @return
* @throws IOException
* @author 高永强
* @version 2018年11月30日 上午11:15:56
*/
public static MultipartFile addWorkMarkToMutipartFile(MultipartFile multipartFile,
String word) throws IOException {
// 获取图片文件名 xxx.png xxx
String originFileName = multipartFile.getOriginalFilename();
// 获取原图片后缀 png
int lastSplit = originFileName.lastIndexOf(".");
String suffix = originFileName.substring(lastSplit + 1);
// 获取图片原始信息
String dOriginFileName = multipartFile.getOriginalFilename();
String dContentType = multipartFile.getContentType();
// 是图片且不是gif才加水印
if (!suffix.equalsIgnoreCase("gif") && dContentType.contains("image")) {
// 获取水印图片
InputStream inputImg = multipartFile.getInputStream();
Image img = ImageIO.read(inputImg);
// 加图片水印
int imgWidth = img.getWidth(null);
int imgHeight = img.getHeight(null);
BufferedImage bufImg = new BufferedImage(imgWidth, imgHeight,
BufferedImage.TYPE_INT_RGB);
//设置字体
Font font = new Font("宋体", Font.PLAIN, 14);
//调用画文字水印的方法
markWord(bufImg, img, word, font , Color.white,-45, imgWidth/8, imgHeight/8);
ByteArrayOutputStream bs = new ByteArrayOutputStream();
ImageOutputStream imOut = ImageIO.createImageOutputStream(bs);
ImageIO.write(bufImg, suffix, imOut);
InputStream is = new ByteArrayInputStream(bs.toByteArray());
// 加水印后的文件上传
multipartFile = new MockMultipartFile(dOriginFileName, dOriginFileName, dContentType,
is);
}
//返回加了水印的上传对象
return multipartFile;
}
}
MultipartFile to File tool
import org.springframework.web.multipart.MultipartFile;
import java.io.*;
/**
* @author 卿通胜
* @version 1.0
* @date 2020/9/11 9:41
*/
public class MultipartFileUtil {
/**
* MultipartFile 转 File
*
* @param file
* @throws Exception
*/
public static File multipartFileToFile(MultipartFile file){
File toFile = null;
if (file.equals("") || file.getSize() <= 0) {
file = null;
} else {
InputStream ins = null;
try {
ins = file.getInputStream();
toFile = new File(file.getOriginalFilename());
inputStreamToFile(ins, toFile);
ins.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (ins != null) {
try {
ins.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
return toFile;
}
//获取流文件
private static void inputStreamToFile(InputStream ins, File file) {
OutputStream os = null;
try {
os = new FileOutputStream(file);
int bytesRead = 0;
byte[] buffer = new byte[8192];
while ((bytesRead = ins.read(buffer, 0, 8192)) != -1) {
os.write(buffer, 0, bytesRead);
}
} catch (Exception e) {
e.printStackTrace();
}finally {
//释放资源
if (ins != null) {
try {
ins.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (os != null) {
try {
os.flush();
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
/**
* 删除本地临时文件:
* @param file
*/
public static void delteTempFile(File file) {
if (file != null) {
File del = new File(file.toURI());
del.delete();
}
}
}
File upload dependency
<!--腾讯云oss-->
<dependency>
<groupId>com.qcloud</groupId>
<artifactId>cos_api</artifactId>
<version>5.6.24</version>
</dependency>
Tencent Cloud file upload
import com.qcloud.cos.COSClient;
import com.qcloud.cos.ClientConfig;
import com.qcloud.cos.auth.BasicCOSCredentials;
import com.qcloud.cos.auth.COSCredentials;
import com.qcloud.cos.exception.CosClientException;
import com.qcloud.cos.exception.CosServiceException;
import com.qcloud.cos.model.*;
import com.qcloud.cos.region.Region;
import lombok.extern.slf4j.Slf4j;
import me.zhyd.oauth.utils.UuidUtils;
import java.io.File;
import java.util.List;
/**
* 腾讯云oss
*
* @author 卿通胜
* @version 1.0
* @date 2020/9/8 15:29
*/
@Slf4j
public class TengXunOssUtil {
public static final String URL_PREFIX = "https://findhouse-1302106834.cos.ap-chongqing.myqcloud.com/";
// 1 初始化用户身份信息（secretId, secretKey）。
private static String secretId = "填写腾讯云cos密钥id";
private static String secretKey = "填写腾讯云cos密钥key";
private static COSCredentials cred = new BasicCOSCredentials(secretId, secretKey);
private static String bucket = "填写存储桶名称"; //存储桶名称，格式：BucketName-APPID
// 2 设置 bucket 的区域, COS 地域的简称请参照 https://cloud.tencent.com/document/product/436/6224
// clientConfig 中包含了设置 region, https(默认 http), 超时, 代理等 set 方法, 使用可参见源码或者常见问题 Java SDK 部分。
private static Region region = new Region("ap-chongqing");
private static ClientConfig clientConfig = new ClientConfig(region);
// 3 生成 cos 客户端。
private static COSClient cosClient = new COSClient(cred, clientConfig);
/**
* 查询存储桶列表
*
* @return
*/
public static List<Bucket> getBuckets() {
List<Bucket> buckets = cosClient.listBuckets();
for (Bucket bucketElement : buckets) {
String bucketName = bucketElement.getName();
String bucketLocation = bucketElement.getLocation();
}
return buckets;
}
/**
* 上传文件
*
* @param localFile
* @return 文件名称
*/
public static String uploadFile(File localFile) {
// 指定要上传到 COS 上对象键
String filename = localFile.getName();
String suffix = filename.substring(filename.lastIndexOf("."));//文件后缀
filename = UuidUtils.getUUID() + suffix;
PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, filename, localFile);
PutObjectResult putObjectResult = cosClient.putObject(putObjectRequest);
return filename;
}
/**
* 删除文件
*
* @param fileName 文件名称
*/
public static void deletefile(String fileName) throws CosClientException, CosServiceException {
// 生成cos客户端
COSClient cosclient = new COSClient(cred, clientConfig);
//处理图片名称
if (fileName.contains(TengXunOssUtil.URL_PREFIX)) {
//如果文件名中包含了url前缀,则去掉
fileName = fileName.replace(TengXunOssUtil.URL_PREFIX, "");
}
// 指定要删除的 bucket 和路径
cosclient.deleteObject(bucket, fileName);
// 关闭客户端(关闭后台线程)
cosclient.shutdown();
}
/**
*
* @describe 上传文件的方法
* @methods uploadObject 方法名
* @param fileUrl 上传文件地址
* @param fileKey 文件对象名称
* @parameter @return 对象列表
*/
public PutObjectResult uploadObject(String fileUrl, String fileKey) {
try {
// 指定要上传的文件
File localFile = new File(fileUrl);
// fileKey 指定要上传到 COS 上对象键
PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, fileKey, localFile);
PutObjectResult putObjectResult = cosClient.putObject(putObjectRequest);
return putObjectResult;
} catch (CosServiceException serverException) {
log.error(serverException.getErrorMessage());
throw new RuntimeException("上传文件平台Server异常"+serverException.getErrorMessage());
} catch (CosClientException clientException) {
log.error(clientException.getMessage());
throw new RuntimeException("上传文件平台Client异常"+clientException.getMessage());
}
}
//测试
/*public static void main(String [] args){
try {
File localFile = new File("F:\\找房快.jpg");
uploadFile(localFile);
}catch (Exception e){
e.printStackTrace();
}
}*/
/**
* 测试删除
* @param args
*/
/*public static void main(String[] args) {
deletefile("clipboard.png");
}*/
}
Picture effect
Solve the problem of uploading pictures to the server watermark text display box does not display text, java local Chinese is displayed correctly, the server becomes mouth-to-mouth
Go here: https://blog.csdn.net/lhq186/article/details/98621405