Posted in Java/Android onJune 11, 2021
环境准备
其实也没什么准备,准备好Springboot就行,还有几张图片:
将文件打包成Zip存放
代码
Controller代码:
@RequestMapping("/zip")
@RestController
public class ZipController {
/**
* 将文件打包成zip并存放在特定位置
*/
@PostMapping("package")
public void packageFileToZip() throws IOException {
// 为了方便我直接将文件地址写好了,各位可以根据自己的情况修改
String[] filePath = new String[]{"E:\\ykds\\1068128498917799516.jpg", "E:\\ykds\\1068128498917917980.jpg", "E:\\ykds\\1068128498917807874.jpg"};
// 将需要打包的文件都放在一个集合中
List<File> fileList = new ArrayList<>();
for (String s : filePath) {
File file = new File(s);
fileList.add(file);
}
// 先在D盘创建一个压缩包
File zipFile = new File("D:\\package.zip");
if(!zipFile.exists())
zipFile.createNewFile();
// 将package.zip的File对象传到toZip对象中
ZipUtils.toZip(fileList, zipFile);
}
}
ZipUTils工具类代码
public class ZipUtils {
/**
* 把文件集合打成zip压缩包
* @param srcFiles 压缩文件集合
* @param zipFile zip文件名
* @throws RuntimeException 异常
*/
public static void toZip(List<File> srcFiles, File zipFile) throws IOException {
if(zipFile == null){
return;
}
if(!zipFile.getName().endsWith(".zip")){
return;
}
ZipOutputStream zos = null;
FileOutputStream out = new FileOutputStream(zipFile);
try {
zos = new ZipOutputStream(out);
for (File srcFile : srcFiles) {
byte[] buf = new byte[BUFFER_SIZE];
zos.putNextEntry(new ZipEntry(srcFile.getName()));
int len;
// 读取文件并写入到zip中
FileInputStream in = new FileInputStream(srcFile);
while ((len = in.read(buf)) != -1) {
zos.write(buf, 0, len);
zos.flush();
}
in.close();
}
} catch (Exception e) {
e.printStackTrace();
}finally {
if (zos != null) {
zos.close();
}
}
}
}
测试
代码打好了,接下来测试下,打开熟悉的postman:
调用接口后就会在D盘中新建一个package.zip的压缩包:
可以看到,我打包的文件都在这里,再看看能不能正常显示:
very good!
将文件打包成zip并导出
上面的方法只是将压缩包保存在本地,如果需要导出的话代码有点不一样。
代码
Controller代码:
/**
* 将文件打包成zip并下载
*/
@PostMapping("download")
public void download(HttpServletResponse response) throws IOException {
// 这里还是和上面一样
String[] filePath = new String[]{"E:\\ykds\\1068128498917799516.jpg", "E:\\ykds\\1068128498917917980.jpg", "E:\\ykds\\1068128498917807874.jpg"};
List<File> fileList = new ArrayList<>();
for (String s : filePath) {
File file = new File(s);
fileList.add(file);
}
response.setHeader("content-type", "application/octet-stream");
response.setContentType("application/octet-stream");
response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=download.zip");
ZipUtils.downloadZip(response.getOutputStream(), fileList);
}
ZipUtils工具类代码
public static void downloadZip(OutputStream outputStream, List<File> fileList){
BufferedInputStream bufferedInputStream = null;
ZipOutputStream zipOutputStream = null;
try {
zipOutputStream = new ZipOutputStream(outputStream);
for (File file : fileList) {
ZipEntry zipEntry = new ZipEntry(file.getName());
zipOutputStream.putNextEntry(zipEntry);
byte[] buf = new byte[BUFFER_SIZE];
int len;
FileInputStream in = new FileInputStream(file);
while ((len = in.read(buf)) != -1) {
zipOutputStream.write(buf, 0, len);
zipOutputStream.flush();
}
}
zipOutputStream.flush();
zipOutputStream.close();
} catch (IOException e) {
e.printStackTrace();
} finally {
// 关闭流
try {
if (bufferedInputStream != null) {
bufferedInputStream.close();
}
if (zipOutputStream != null ) {
zipOutputStream.close();
}
if (outputStream != null) {
outputStream.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
测试
还是用postman:
下载完成后打开看看
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手把手教你用SpringBoot将文件打包成zip存放或导出
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