springboot生成二维码并传送到oss

可以通过以下步骤实现：

1. 引入依赖

在 pom.xml 文件中添加以下依赖：

<dependency>
    <groupId>com.google.zxing</groupId>
    <artifactId>core</artifactId>
    <version>3.3.3</version>
</dependency>
<dependency>
    <groupId>com.google.zxing</groupId>
    <artifactId>javase</artifactId>
    <version>3.3.3</version>
</dependency>
<dependency>
    <groupId>com.aliyun.oss</groupId>
    <artifactId>aliyun-sdk-oss</artifactId>
    <version>3.10.2</version>
</dependency>

2. 生成二维码

在代码中使用以下方法生成二维码：

public static void generateQRCode(String content, String filePath) throws Exception {
    int width = 300;
    int height = 300;
    String format = "png";
    Map<EncodeHintType, Object> hints = new HashMap<>();
    hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
    BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
    Path path = FileSystems.getDefault().getPath(filePath);
    MatrixToImageWriter.writeToPath(bitMatrix, format, path);
}

其中，`content` 参数为生成二维码的内容，`filePath` 参数为生成的二维码保存的路径。

3. 上传到 OSS

使用以下代码将生成的二维码上传到 OSS：

public static void uploadFileToOSS(String endpoint, String accessKeyId, String accessKeySecret, String bucketName, String objectName, String filePath) {
    OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    try {
        ossClient.putObject(bucketName, objectName, new File(filePath));
    } finally {
        ossClient.shutdown();
    }
}

其中，`endpoint`、`accessKeyId`、`accessKeySecret`、`bucketName` 参数为 OSS 的配置信息，`objectName` 参数为上传到 OSS 后的文件名，`filePath` 参数为生成的二维码文件路径。

完整代码示例：

public static void generateQRCodeAndUploadToOSS(String content, String endpoint, String accessKeyId, String accessKeySecret, String bucketName, String objectName) throws Exception {
    int width = 300;
    int height = 300;
    String format = "png";
    Map<EncodeHintType, Object> hints = new HashMap<>();
    hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
    BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
    Path path = FileSystems.getDefault().getPath(objectName);
    MatrixToImageWriter.writeToPath(bitMatrix, format, path);
    OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    try {
        ossClient.putObject(bucketName, objectName, new File(objectName));
    } finally {
        ossClient.shutdown();
    }
}