React Native Fetch Blob多部分数据图像上传不会在请求中放入任何数据

时间:2017-08-18 23:58:53

标签: react-native image-uploading multipartform-data react-native-fetch-blob

我正在尝试研究如何使用RNFetchBlob上传多个图像。我使用base64编码版本的图像作为测试。这是我的要求:

    const base64ImageData = "/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAkGBwgHBgkIBwgKCgkLDRYPDQwM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\n6+66kI05KTw1neXNVpwpSUpJa9pdB5otqcDrZbS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M5U6BmSqQ3YUta2JTjZUl1IBIURcbYAaXOiSn5vbjV9\ndVlRjOisOcENpVo9GkAX7eWAP//Z\n"
    const imgSrc = "data:image/jpeg;base64," + base64ImageData;

    RNFetchBlob.fetch('POST', 'http://localhost:3000/test_upload', {
      Authorization : "Bearer access-token",
      otherHeader : "foo",
      'Content-Type' : 'multipart/form-data',
    }, [
      // element with property `filename` will be transformed into `file` in form data
      { name : 'one', filename : 'testimage.jpeg', data: imgSrc},
      // custom content type
      { name : 'two', filename : 'testimage.jpeg', data: base64ImageData},

    ]).then((resp) => {
      console.log(resp)
    }).catch((err) => {
      console.log(err)
    })

以下是我的服务器收到的请求体:

"--RNFetchBlob218752\r\n" +
    "Content-Disposition: form-data; name=\"one\"; filename=\"testimage.jpeg\"\r\n" +
    "Content-Type: application/octet-stream\r\n" +
    "\r\n" +
    "\r\n" +
    "--RNFetchBlob218752\r\n" +
    "Content-Disposition: form-data; name=\"two\"; filename=\"testimage.jpeg\"\r\n" +
    "Content-Type: application/octet-stream\r\n" +
    "\r\n" +
    "\r\n" +
    "--RNFetchBlob218752--\r\n"

所以问题是图像数据去了哪里?

(请注意,base64字符串肯定有效,因为我已在我的演示应用中将其显示在图片标记中。另请注意,我正在测试包含它的原样和使用"数据:图像/ jpeg; base64,"追加。)

非常欢迎任何帮助!

1 个答案:

答案 0 :(得分:0)

我发现问题出在我的base64编码字符串本身。当我使用https://www.base64-image.de/生成base64时,文件发送没有问题。当我使用https://ruby-doc.org/stdlib-2.1.3/libdoc/base64/rdoc/Base64.html生成它时,RNFetchBlob没有发送任何内容。我比较了两个base64字符串,而Ruby生成的字符串有很多/ n换行符,在另一个版本中没有。

我现在已经知道(通过Strange \n in base64 encoded string in Ruby)要生成没有换行符的base64,您需要在strict_encode64而不是Base64上调用encode64,这就是我正在使用。