为什么我在 Cloudinary Java 上收到 'Invalid Signature' 错误？

Question

我正在尝试在 JSF 应用程序中实现 Cloudinary 上传。根据 Cloudinary 网站上的说明，我正在使用此依赖项：

<dependency>
    <groupId>com.cloudinary</groupId>
    <artifactId>cloudinary-http44</artifactId>
    <version>1.19.0</version>
</dependency>

我有一个 class 用于上传：

package com.github.cvetan.bookstore.util;

import com.cloudinary.*;
import com.cloudinary.utils.ObjectUtils;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

/**
 *
 * @author cvetan
 */
public class CloudinaryFacade {

    private final static Map<Object, Object> CONFIG = new HashMap<>();

    static {
        CONFIG.put("cloud_name", "cvetan");
        CONFIG.put("api_key", "***");
        CONFIG.put("api_secret", "***");
    }

    public static String upload(byte[] file) throws IOException {
        Cloudinary cloudinary = new Cloudinary(CONFIG);

        Map result = cloudinary.uploader().upload(file, ObjectUtils.emptyMap());

        return (String) result.get("url");
    }
}

但是当我尝试时，抛出了下面的异常：

Invalid Signature 6e527a754f1f6fd84df0bd4c092df881c0ddc65f. String to sign - 'timestamp=1533653472'.

非常感谢任何帮助。谢谢。

Answer 1

我建议使用简单的服务器端 java 应用程序检查您上传到 Cloudinary 的内容。像这样：-

import com.cloudinary.*;
import com.cloudinary.utils.ObjectUtils;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class CloudinaryFacade {
  private final static Map<Object, Object> CONFIG = new HashMap<>();

    static {
        CONFIG.put("cloud_name", "");
        CONFIG.put("api_key", "");
        CONFIG.put("api_secret", "");
    }

  public static void main(String[] args) throws IOException {
       Cloudinary cloudinary = new Cloudinary(CONFIG);

        Map result = cloudinary.uploader().upload("https://res.cloudinary.com/demo/image/upload/sample.jpg", ObjectUtils.emptyMap());

        System.out.println(result);
}

}

一旦上述示例正常运行，您可以继续测试字节 upload.This 将确保您没有配置问题。

这是一个例子。我正在使用 apache 文件上传：

List<FileItem> formItems = upload.parseRequest(request);//List of file items
for (FileItem item : formItems) {
    String fileName = item.getName();
    //save on Cloudinary
    Map imageUpload=cloudinary.uploader().upload(item.get(), 
    ObjectUtils.asMap("public_id",fileName));
}

Answer 2

我已经设法让它工作了。我最终将上传的文件内容从 PrimeFaces uploadedFile 复制到一个临时文件中，并将该文件发送到 Cloudinary upload。

托管 bean class 方法（上传处理程序）：

public String upload() {
        try {
            File uploadedFile = File.createTempFile("image", ".tmp");

            InputStream content = file.getInputstream();

            Files.copy(content, uploadedFile.toPath(), StandardCopyOption.REPLACE_EXISTING);

            String filename = CloudinaryFacade.upload(uploadedFile);

            return Redirector.redirectWithMessage(filename, FacesMessage.SEVERITY_INFO, null);
        } catch (IOException ex) {
            return Redirector.redirectWithMessage(ex.getMessage(), FacesMessage.SEVERITY_ERROR, null);
        }
    }

云端上传方式：

public static String upload(File file) throws IOException {
        Cloudinary cloudinary = new Cloudinary(CONFIG);
        Map<Object, Object> parameters = new HashMap<>();
        parameters.put("public_id", "Bookstore/Authors/Images/vejder");

        Map result = cloudinary.uploader().upload(file, parameters);

        return (String) result.get("url");
    }

谢谢。

为什么我在 Cloudinary Java 上收到 'Invalid Signature' 错误？

Why am I getting an 'Invalid Signature' error on Cloudinary Java?

java

cloudinary