Question

我是S3的新手。试图捕捉S3 http://docs.aws.amazon.com/AmazonS3/2006-03-01/API/ErrorResponses.html

中的错误

我的代码示例：

{"expiration": "2007-12-01T12:00:00.000Z",
  "conditions": [
    {"bucket": "johnsmith"},
    ["starts-with", "$key", ""],
    {"acl": "private"},
    {"success_action_redirect": "http://johnsmith.s3.amazonaws.com/successful_upload.html"},
    ["eq", "$Content-Type", "application/msword,application/pdf"],
    ["content-length-range", 2048, 20971520 ]
  ]
}'; 



<form action="http://johnsmith.s3.amazonaws.com/" method="post" enctype="multipart/form-data">
<input type="hidden" name="key" value="${filename}" /><br />
<input type="hidden" name="acl" value="private" />
<input type="hidden" name="success_action_redirect" value="http://johnsmith.s3.amazonaws.com/successful_upload.html" >
<input type="hidden" name="AWSAccessKeyId " value="15B4D3461F177624206A" />
<input type="hidden" name="Policy" value="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" />
<input type="hidden" name="Signature" value="2qCp0odXe7A9IYyUVqn0w2adtCA=" />
File: <input type="file" name="file" /> <br />
<input type="submit" name="submit" value="Upload to Amazon S3" />
</form>

如果文件上传或过期失败，想要捕获错误。检查内容类型，内容长度范围。

获得正确成功的回调变量，如bucket，key，etag。

由于

Answer 1

编辑：我的原始答案使用了iframe但我终于让XMLHttpRequest工作了，我认为这是一种更清洁的方法。

我遇到了同样的问题。我的要求是：

我不想使用flash
我不希望用户看到AWS错误XML

互联网上散布着大量解决方案。我让它在两个版本中工作：

使用iFrame呈现POST结果并尝试访问上传的文件（在我的情况下是图片）以检查上传是否有效：https://gist.github.com/joaoffcosta/5728483
使用XMLHttpRequest发出请求并处理进度，完成和过早失败：https://gist.github.com/joaoffcosta/5729398（最佳解决方案IMO ）

在这两种解决方案中，您的S3 Bucket应该允许“Everyone”进行“上传/删除”。此外，XMLHttpRequest解决方案要求您在存储桶上配置CORS。要做到这一点，你应该去你的桶“权限”，按“添加CORS配置”并添加如下内容：

<CORSConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/">
    <CORSRule>
        <AllowedOrigin>http://your_website_or_localhost_server/</AllowedOrigin>
        <AllowedMethod>POST</AllowedMethod>
        <MaxAgeSeconds>3000</MaxAgeSeconds>
        <ExposeHeader>x-amz-server-side-encryption</ExposeHeader>
        <ExposeHeader>x-amz-request-id</ExposeHeader>
        <ExposeHeader>x-amz-id-2</ExposeHeader>
        <AllowedHeader>*</AllowedHeader>
    </CORSRule>
</CORSConfiguration>

Answer 2

使用简单的ajax表单帖子......

<script>
  function uploadFile() {
    var file_name = $('#form1 :input[name="file"]').val().split('\\').pop();
    if(!file_name || file_name.length === 0) {
      alert('please choose file')
      return false;
    }

    $.ajax({
      url: "/getS3FormData.php",
      cache: false,
      type: 'GET',
      data: {file_name : file_name} ,
      async: false,
      success: function (response) {
        var s3 = JSON.parse(response);
        handleFileUpload(s3);
      },
      error: function (error) {
        alert("Upload FAILED  :-( Retry.");
      }
    });
  }


function handleFileUpload(s3) {
  var fd = new FormData();
  fd.append('key', s3.key);
  fd.append('AWSAccessKeyId', s3.AWSAccessKeyId);
  fd.append('acl', s3.acl);
  fd.append('policy', s3.policy);
  fd.append('signature', s3.signature);
  fd.append('Content-Type', s3.content_type);

  var file = $('#form1').find('input[name=file]')[0].files[0];      
  fd.append("file", file);

  window.onbeforeunload = function () {
    return "Upload in progress";
  }

  $.ajax({
    url: s3.url,
    data: fd,
    cache: false,
    contentType: false,
    processData: false,
    type: 'POST',
    success: function(data){
      window.onbeforeunload = null;
      window.location.href = s3.success_action_redirect;
    },
    error: function(error) {
      window.onbeforeunload = null;
      alert('Upload Failed, Please try again');
    }
  });
}

html表单

  <form id="form1" method="post" enctype="multipart/form-data">  
    <input type="file" name="file"></input>
    <input type="submit" onclick="uploadFile(); return false;" value="Upload">
  </form>

如何通过POST处理S3浏览器上传中的错误

2 个答案: