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yn_img_tool
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Merge remote-tracking branch 'origin/master'

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fl 2025-04-02 09:32:27 +08:00
parent 8f2ef810f1 eae562d212
commit 9291851dd6
4 changed files with 200 additions and 0 deletions
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6
pom.xml
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@ -360,6 +360,12 @@
<artifactId>easypoi-base</artifactId>
<version>4.1.2</version>
</dependency>
<!--thumbnailator图片处理-->
<dependency>
<groupId>net.coobird</groupId>
<artifactId>thumbnailator</artifactId>
<version>0.4.8</version>
</dependency>
</dependencies>

63
src/main/java/com/bonus/imgTool/system/controller/FileUploadController.java Normal file
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@ -0,0 +1,63 @@
package com.bonus.imgTool.system.controller;
import com.bonus.imgTool.utils.DateTimeHelper;
import com.bonus.imgTool.utils.IDUtils;
import com.bonus.imgTool.utils.SystemUtils;
import com.bonus.imgTool.webResult.AjaxResult;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
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.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @className:FileUploadController
* @author:cwchen
* @date:2025-04-02-9:20
* @version:1.0
* @description:文件上传
*/
@RestController
@RequestMapping("/common/file/")
@Slf4j
public class FileUploadController {
@ApiOperation(value = "文件上传")
@PostMapping("uploadFile")
public AjaxResult appUploadFile(@RequestParam(value = "files") MultipartFile[] files) {
try {
List<Map<String,Object>> fileList = new ArrayList<>();
for (MultipartFile file : files) {
String fileName = file.getOriginalFilename();
String suffix = IDUtils.getSuffix(fileName);
String fileMbSize = IDUtils.getFileMbSize(file.getSize());
String path = File.separator + DateTimeHelper.getNowYMD() + File.separator + IDUtils.createID() + suffix;
String newPath = SystemUtils.getUploadPath() + path;
File uploadFile = new File(newPath);
//生成文件夹
if (!uploadFile.getParentFile().exists()) {
uploadFile.getParentFile().mkdirs();
}
// 存入临时文件
file.transferTo(uploadFile);
Map<String, Object> map = new HashMap<>();
map.put("filePath", path);
map.put("fileName", fileName);
map.put("fileSize", fileMbSize);
fileList.add(map);
}
return AjaxResult.success("上传成功", fileList);
} catch (Exception e) {
log.error(e.toString(), e);
return AjaxResult.error("文件上传异常");
}
}
}

20
src/main/java/com/bonus/imgTool/utils/IDUtils.java
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@ -20,4 +20,24 @@ public class IDUtils {
return System.currentTimeMillis() + String.valueOf(r).substring(1);
}
/**
* 传入文件 名称
* @param fileName
* @return
*/
public static String getSuffix(String fileName){
return fileName.substring(fileName.lastIndexOf('.'));
}
/**
* 将文件大小转为Mb
* @param bytes
* @return
*/
public static String getFileMbSize(long bytes){
double mb = bytes / (1024.0 * 1024.0);
System.out.println("文件大小: " + String.format("%.2f MB", mb));
return String.format("%.2f", mb);
}
}

111
src/main/java/com/bonus/imgTool/utils/PicUtils.java Normal file
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@ -0,0 +1,111 @@
package com.bonus.imgTool.utils;
import net.coobird.thumbnailator.Thumbnails;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
/**
* @author 10488
* 图片压缩工具类
*/
public class PicUtils {
//以下是常量,按照阿里代码开发规范,不允许代码中出现魔法值
private static final Logger logger = LoggerFactory.getLogger(PicUtils.class);
private static final Integer ZERO = 0;
private static final Integer ONE_ZERO_TWO_FOUR = 1024;
private static final Integer NINE_ZERO_ZERO = 900;
private static final Integer THREE_TWO_SEVEN_FIVE = 3275;
private static final Integer TWO_ZERO_FOUR_SEVEN = 2047;
private static final Double ZERO_EIGHT_FIVE = 0.85;
private static final Double ZERO_SIX = 0.6;
private static final Double ZERO_FOUR_FOUR = 0.44;
private static final Double ZERO_FOUR = 0.4;
/**
* 根据指定大小压缩图片
*
* @param imageBytes 源图片字节数组
* @param desFileSize 指定图片大小，单位kb
* @return 压缩质量后的图片字节数组
*/
public static byte[] compressPicForScale(byte[] imageBytes, long desFileSize) {
if (imageBytes == null || imageBytes.length <= ZERO || imageBytes.length < desFileSize * ONE_ZERO_TWO_FOUR) {
return imageBytes;
}
long srcSize = imageBytes.length;
double accuracy = getAccuracy(srcSize / ONE_ZERO_TWO_FOUR);
try {
while (imageBytes.length > desFileSize * ONE_ZERO_TWO_FOUR) {
ByteArrayInputStream inputStream = new ByteArrayInputStream(imageBytes);
ByteArrayOutputStream outputStream = new ByteArrayOutputStream(imageBytes.length);
Thumbnails.of(inputStream)
.scale(accuracy)
.outputQuality(accuracy)
.toOutputStream(outputStream);
imageBytes = outputStream.toByteArray();
}
logger.info("图片原大小={}kb | 压缩后大小={}kb",
srcSize / ONE_ZERO_TWO_FOUR, imageBytes.length / ONE_ZERO_TWO_FOUR);
} catch (Exception e) {
logger.error("【图片压缩】msg=图片压缩失败!", e);
}
return imageBytes;
}
/**
* 自动调节精度(经验数值)
*
* @param size 源图片大小
* @return 图片压缩质量比
*/
private static double getAccuracy(long size) {
double accuracy;
if (size < NINE_ZERO_ZERO) {
accuracy = ZERO_EIGHT_FIVE;
} else if (size < TWO_ZERO_FOUR_SEVEN) {
accuracy = ZERO_SIX;
} else if (size < THREE_TWO_SEVEN_FIVE) {
accuracy = ZERO_FOUR_FOUR;
} else {
accuracy = ZERO_FOUR;
}
return accuracy;
}
public static byte[] FileTobyte(File file) {
FileInputStream fileInputStream = null;
byte[] imgData = null;
try {
imgData = new byte[(int) file.length()];
//read file into bytes[]
fileInputStream = new FileInputStream(file);
fileInputStream.read(imgData);
} catch (IOException e) {
e.printStackTrace();
} finally {
if (fileInputStream != null) {
try {
fileInputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return imgData;
}
public static void main(String[] args) throws IOException {
byte[] bytes = compressPicForScale(FileTobyte(new File("L:\\其他\\测试图片\\6.jpg")), 200);
String newFileName = IDUtils.createID() + ".jpg";
File fOut = new File("L:\\新建文件夹\\" + newFileName);
FileOutputStream fileOutputStream = new FileOutputStream(fOut);
fileOutputStream.write(bytes);
fileOutputStream.close();
}
}