依赖
<!--二维码--> <dependency> <groupId>com.google.zxing</groupId> <artifactId>core</artifactId> <version>3.3.0</version> </dependency> <dependency> <groupId>com.google.zxing</groupId> <artifactId>javase</artifactId> <version>3.3.0</version> </dependency> <!--阿里云oss上传文件--> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpclient</artifactId> <version>4.5.1</version> </dependency> <dependency> <groupId>org.apache.httpcomponents</groupId> <artifactId>httpcore</artifactId> <version>4.4.3</version> </dependency> <dependency> <groupId>aliyun-sdk-oss</groupId> <artifactId>aliyun-sdk-oss</artifactId> <version>3.0.0</version> </dependency> <dependency> <groupId>com.aliyun</groupId> <artifactId>aliyun-java-sdk-vod</artifactId> <version>2.11.5</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-mock</artifactId> <version>2.0.8</version> </dependency>
OSSClientUtil（连接阿里云工具类）
@Slf4j
@Data
public class OSSClientUtil {
private String endpoint = "http://oss-cn-huhehaote.aliyuncs.com";
// accessKey
public static String accessKeyId = "阿里云AccessKey ID";
public static String accessKeySecret = "阿里云Access Key Secret";
//空间
private String bucketName = "wokezhineng";
//文件存储目录
private String filedir = "image/";
private OSSClient ossClient;
public OSSClientUtil() {
ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
}
/**
* 初始化
*/
public void init() {
ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
}
/**
* 销毁
*/
public void destory() {
ossClient.shutdown();
}
/**
* 上传图片
*
* @param url
*/
public void uploadImg2Oss(String url) throws Exception {
File fileOnServer = new File(url);
FileInputStream fin;
try {
fin = new FileInputStream(fileOnServer);
String[] split = url.split("/");
this.uploadFile2OSS(fin, split[split.length - 1]);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
}
// @RequestMapping("/up")
public String uploadImg2Oss(MultipartFile file) throws Exception {
String url="";
try {
String originalFilename = file.getOriginalFilename();
String substring = originalFilename.substring(originalFilename.lastIndexOf(".")).toLowerCase();
String name = UUID.randomUUID() + substring;
InputStream inputStream = file.getInputStream();
url=this.uploadFile2OSS(inputStream, name);
} catch (Exception e) {
e.printStackTrace();
}finally {
ossClient.shutdown();
}
System.out.println(url);
return url;
}
/**
* 上传到OSS服务器 如果同名文件会覆盖服务器上的
*
* @param instream 文件流
* @param fileName 文件名称 包括后缀名
* @return 出错返回"" ,唯一MD5数字签名
*/
public String uploadFile2OSS(InputStream instream, String fileName) {
String ret = "";
try {
// //创建上传Object的Metadata
// ObjectMetadata objectMetadata = new ObjectMetadata();
// objectMetadata.setContentLength(instream.available());
// objectMetadata.setCacheControl("no-cache");
// objectMetadata.setHeader("Pragma", "no-cache");
// objectMetadata.setContentType(getcontentType(fileName.substring(fileName.lastIndexOf("."))));
// objectMetadata.setContentDisposition("inline;filename=" + fileName);
//上传文件
String today = new SimpleDateFormat("yyyyMMdd").format(new Date());
filedir=filedir+today+"/"+fileName;
// ossClient.putObject(bucketName, filedir, instream, objectMetadata);
ossClient.putObject(bucketName, filedir, instream);
ret="http://wokezhineng.oss-cn-huhehaote.aliyuncs.com/"+filedir;
}finally {
try {
if (instream != null) {
instream.close();
}
} catch (IOException e) {
e.printStackTrace();
}
ossClient.shutdown();
}
return ret;
}
/**
* Description: 判断OSS服务文件上传时文件的contentType
*
* @param FilenameExtension 文件后缀
* @return String
*/
public static String getcontentType(String FilenameExtension) {
if (FilenameExtension.equalsIgnoreCase(".bmp")) {
return "image/bmp";
}
if (FilenameExtension.equalsIgnoreCase(".gif")) {
return "image/gif";
}
if (FilenameExtension.equalsIgnoreCase(".jpeg") ||
FilenameExtension.equalsIgnoreCase(".jpg") ||
FilenameExtension.equalsIgnoreCase(".png")) {
return "image/jpeg";
}
if (FilenameExtension.equalsIgnoreCase(".html")) {
return "text/html";
}
if (FilenameExtension.equalsIgnoreCase(".txt")) {
return "text/plain";
}
if (FilenameExtension.equalsIgnoreCase(".vsd")) {
return "application/vnd.visio";
}
if (FilenameExtension.equalsIgnoreCase(".pptx") ||
FilenameExtension.equalsIgnoreCase(".ppt")) {
return "application/vnd.ms-powerpoint";
}
if (FilenameExtension.equalsIgnoreCase(".docx") ||
FilenameExtension.equalsIgnoreCase(".doc")) {
return "application/msword";
}
if (FilenameExtension.equalsIgnoreCase(".xml")) {
return "text/xml";
}
return "image/jpeg";
}
/**
* 获得url链接
*
* @param key
* @return
*/
public String getUrl(String key) {
// 设置URL过期时间为10年 3600l* 1000*24*365*10
Date expiration = new Date(new Date().getTime() + 3600l * 1000 * 24 * 365 * 10);
// 生成URL
URL url = ossClient.generatePresignedUrl(bucketName, key, expiration);
if (url != null) {
return url.toString();
}
return null;
}
/**
*@Author:yangli
*@Date:14:47 2018/8/2
* 删除文件
**/
public void deleteFile(String fileName) throws Exception{
try {
ossClient.deleteObject(bucketName,fileName);
} catch (Exception e) {
e.printStackTrace();
} finally {
ossClient.shutdown();
}
}
public String getImgUrl(String fileUrl) {
System.out.println(fileUrl);
if (!StringUtils.isEmpty(fileUrl)) {
String[] split = fileUrl.split("/");
return this.getUrl(this.filedir + split[split.length - 1]);
}
return null;
}
}
二维码生成Util
@Configuration
@Slf4j
public class QRCodeGenerator {
private final static String CHARSET = "utf-8";
private final static int QRSIZEE = 300;
// 二维码颜色
private static final int BLACK = 0xFF000000;
// 二维码颜色
private static final int WHITE = 0xFFFFFFFF;
public static BufferedImage createImage(String id){
String content = id;
Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
hints.put(EncodeHintType.MARGIN, 1);
BitMatrix bitMatrix = null;
try {
bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, QRSIZEE, QRSIZEE,hints);
}catch (Exception e){
e.printStackTrace();
}
int width = bitMatrix.getWidth();
int height = bitMatrix.getHeight();
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
image.setRGB(x, y, bitMatrix.get(x, y) ? BLACK : WHITE);
}
}
return image;
}
}
Controller层
/**
* 打印二维码
* @param
* @return
*/
@ApiOperation(value = "打印二维码 ")
@GetMapping("PrintQRCode")
public Result PrintQRCode(@ApiParam("点id")@RequestParam(value = "pointId")String pointId, HttpServletResponse response) throws Exception {
return Result.OK(inspectionPointService.PrintQRCode(pointId));
}
service层
public String updateHead(MultipartFile file) throws Exception {
if (file == null || file.getSize() <= 0) {
throw new Exception("file不能为空");
}
OSSClientUtil ossClient = new OSSClientUtil();
String name = ossClient.uploadImg2Oss(file);
return name;
}
public String PrintQRCode(String pointId) throws Exception {
String[] pointIds=pointId.split(",");
String urls="";
for (String id:pointIds) {
BufferedImage image = QRCodeGenerator.createImage(id);
// 创建输出流
ByteArrayOutputStream bos = new ByteArrayOutputStream();
// 将图像输出到输出流中。
ImageIO.write(image, "jpeg", bos);
MultipartFile multipartFile = new MockMultipartFile("test.jpeg", "test.jpeg", "", bos.toByteArray());
if (urls.equals("")){
urls = updateHead(multipartFile);
}else{
urls=urls+","+updateHead(multipartFile);
}
}
return urls;
}
启动项目，访问该接口；返回一个图片地址
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