目录
需求
将图片按照不同的分组存放在不同的文件夹下,然后打包输出。
结果示例
展示的是解压后的文件夹
示例1
示例2
源码
package com.asyf.zip_demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.Date;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
@SpringBootApplication
@RestController
public class ZipDemoApplication {
public static void main(String[] args) {
SpringApplication.run(ZipDemoApplication.class, args);
System.out.println("http://localhost:8080/test");
System.out.println("http://localhost:8080/download");
System.out.println("http://localhost:8080/downloadSplitFloder");
}
@RequestMapping(value = "test")
public String test() {
return new Date().toString();
}
@RequestMapping(value = "download")
public void download(HttpServletRequest request, HttpServletResponse response) {
try {
String downloadFilename = "图片在一个文件夹.zip";//文件的名称
downloadFilename = URLEncoder.encode(downloadFilename, "UTF-8");//转换中文否则可能会产生乱码
response.setContentType("application/octet-stream");// 指明response的返回对象是文件流
response.setHeader("Content-Disposition", "attachment;filename=" + downloadFilename);// 设置在下载框默认显示的文件名
ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());
String[] files = new String[]{"http://okyd.oss-cn-beijing.aliyuncs.com/img/157164690500022537.jpg", "http://okyd.oss-cn-beijing.aliyuncs.com/img/157164694074782832.jpg"};
for (int i = 0; i < files.length; i++) {
URL url = new URL(files[i]);
zos.putNextEntry(new ZipEntry(i + ".jpg"));
//读取网络文件
InputStream fis = url.openConnection().getInputStream();
byte[] buffer = new byte[1024];
int r = 0;
while ((r = fis.read(buffer)) != -1) {
zos.write(buffer, 0, r);
}
fis.close();
}
zos.flush();
zos.close();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
@RequestMapping(value = "downloadSplitFloder")
public void downloadSplitFloder(HttpServletRequest request, HttpServletResponse response) {
try {
String downloadFilename = "图片分成2个文件夹.zip";//文件的名称
downloadFilename = URLEncoder.encode(downloadFilename, "UTF-8");//转换中文否则可能会产生乱码
response.setContentType("application/octet-stream");// 指明response的返回对象是文件流
response.setHeader("Content-Disposition", "attachment;filename=" + downloadFilename);// 设置在下载框默认显示的文件名
ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());
String[] files = new String[]{"http://okyd.oss-cn-beijing.aliyuncs.com/img/157164690500022537.jpg", "http://okyd.oss-cn-beijing.aliyuncs.com/img/157164694074782832.jpg"};
for (int i = 0; i < files.length; i++) {
URL url = new URL(files[i]);
zos.putNextEntry(new ZipEntry("文件夹" + i + "/" + i + ".jpg"));
//读取网络文件
InputStream fis = url.openConnection().getInputStream();
byte[] buffer = new byte[1024];
int r = 0;
while ((r = fis.read(buffer)) != -1) {
zos.write(buffer, 0, r);
}
fis.close();
}
zos.flush();
zos.close();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
总结
zos设置文件时加入“/”,区分目录即可。
关键代码:zos.putNextEntry(new ZipEntry("文件夹" + i + "/" + i + ".jpg"));