//图片保存路径前缀
private static final String BASE_PATH = "D:/zingImage/";
//压缩包保存路径
private static final String ZIP_PATH = "D:/";
private static final String ZIP_NAME = "zingImage.zip";
//图片保存的格式
private static final String Suffix_PATH = ".png";
//二维码请求路径
private static final String Url_Path = "http://www.baidu.com";
/**
* @author 王安其
* @desrciption 压缩文件夹并下载
* @Date 2019/6/21 14:55
* @Param [params]
* @retrun
*/
@PostMapping(value="/downloadCompressFile")
public void downloadCompressFile(HttpServletResponse response) {
//生成所有设备的二维码并保存
saveInspectionImage();
createCardImgZip(BASE_PATH,ZIP_NAME);
//下载压缩包
downLoadZip(ZIP_NAME,ZIP_PATH+ZIP_NAME,response);
}
/**
* @author 王安其
* @desrciption 保存二维码图片到指定位置
* @Date 2019/6/21 14:55
* @Param [params]
* @retrun
*/
public void saveInspectionImage() {
try {
deleteDir(BASE_PATH);
//查询所有机号
List> vclInfoList = zingImageService.findVclInfo();
for(Map map : vclInfoList) {
String askUrl = Url_Path;
String savePath = BASE_PATH+map.get("Vcl_No").toString()+Suffix_PATH;
generateQRCodeImage(askUrl, 350, 350, savePath);
}
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* @param text 扫描二维码后访问的路径
* @param width 二维码宽度
* @param height 二维码高度
* @param filePath 图片保存路径
* @throws WriterException
* @throws IOException
*/
private static void generateQRCodeImage(String text, int width, int height, String filePath) throws WriterException, IOException {
QRCodeWriter qrCodeWriter = new QRCodeWriter();
BitMatrix bitMatrix = qrCodeWriter.encode(text, BarcodeFormat.QR_CODE, width,height);
Path path = FileSystems.getDefault().getPath(filePath);
MatrixToImageWriter.writeToPath(bitMatrix, "PNG", path);
}
public static void deleteDir(String path){
File file = new File(path);
String[] content = file.list();//取得当前目录下所有文件和文件夹
for(String name : content){
File temp = new File(path, name);
if(temp.isDirectory()){//判断是否是目录
deleteDir(temp.getAbsolutePath());//递归调用，删除目录里的内容
temp.delete();//删除空目录
}else{
temp.delete();
}
}
}
/**
* @param sourcePath
* @param zipName
* @return
*/
public void createCardImgZip(String sourcePath, String zipName) {
String zipPath = ZIP_PATH;
File sourceFile = new File(sourcePath);
FileInputStream fis = null;
BufferedInputStream bis = null;
FileOutputStream fos = null;
ZipOutputStream zos = null;
try {
File zipFile = new File(zipPath + "/" + zipName.split("\\.")[0] + ".zip");
//如果压缩包存在,删除即可
if (zipFile.exists()) {
zipFile.delete();
}
fos = new FileOutputStream(zipFile);
zos = new ZipOutputStream(new BufferedOutputStream(fos));
byte[] bufs = new byte[1024 * 10];
// create .zip and put pictures in
File[] sourceFiles = sourceFile.listFiles();
for(int i=0;i
/**
* @param fileName 文件名
* @param path 文件保存路径（含文件名称）
* @param response
* @return
*/
public String downLoadZip(String fileName,String path,HttpServletResponse response) {
try {
File file = new File(path);
response.setCharacterEncoding("UTF-8");
response.setHeader("Content-Disposition",
"attachment; filename=" + new String(fileName.getBytes("UTF-8"), "ISO8859-1"));
response.setContentLength((int) file.length());
//定义输出类型
response.setContentType("application/zip");
FileInputStream fis = new FileInputStream(file);
BufferedInputStream buff = new BufferedInputStream(fis);
//相当于我们的缓存
byte[] b = new byte[1024];
//该值用于计算当前实际下载了多少字节
long k = 0;
//从response对象中得到输出流,准备下载
OutputStream myout = response.getOutputStream();
//开始循环下载
while (k < file.length()) {
int j = buff.read(b, 0, 1024);
k += j;
myout.write(b, 0, j);
}
myout.flush();
buff.close();
file.delete();
} catch (Exception e) {
System.out.println(e);
}
return null;
}
