Question

我试着以blob格式转换图像数组并发送到脚本php来处理数据但是blob数组没有正确发送，我不知道为什么。我在html中的输入是：

$UserArray = Get-Content 'C:\Temp\Users.txt'
$GroupArray = Get-Content 'C:\Temp\Groups.txt'
$OutputFile = 'C:\Temp\Something.csv'

# Setting up a hashtable for later use
$UserHash = New-Object -TypeName System.Collections.Hashtable

# Outer loop to add users and membership to UserHash
$UserArray | ForEach-Object{
    $UserInfo = Get-ADUser $_ -Properties MemberOf
    # Strips the LPAP syntax to just the SAMAccountName of the group
    $Memberships = $UserInfo.MemberOf | ForEach-Object{
        ($_.Split(',')[0]).replace('CN=','')
    }
    #Adding the User=Membership pair to the Hash
    $UserHash.Add($_,$Memberships)
}

# Outer loop to create an object per user
$Results = $UserArray | ForEach-Object{
    # First create a simple object
    $User = New-Object -TypeName PSCustomObject -Property @{
        Name = $_
    }
    # Dynamically add members to the object, based on the $GroupArray
    $GroupArray | ForEach-Object {
        #Checking $UserHash to see if group shows up in user's membership list
        $UserIsMember = $UserHash.($User.Name) -contains $_
        #Adding property to object, and value
        $User | Add-Member -MemberType NoteProperty -Name $_ -Value $UserIsMember
    }
    #Returning the object to the variable
    Return $User
}

#Convert the objects to a CSV, then output them
$Results | ConvertTo-CSV -NoTypeInformation | Out-File $OutputFile

我在javascript中的脚本是这样的：

<div class="form-group">
<input id="imagen" onchange="send()" type="file" name="imgs" multiple="true" class="form-control required" >
</div>

我正在尝试通过ajax调用将数组blob发送到脚本php：

<script>
    var y='#imagen';
    var z;        
    var blobs;
    function send(){
        x=trans(y); 
        };

    function trans(v) {
        var file    = document.querySelector(v).files;

        for (i = 0; i < file.length; i++) {
            var reader  = new FileReader();
            reader.readAsDataURL(file[i]);
            reader.onloadend = function () {
            blobs[i]=reader.result;
            }
        }
        console.log(blobs.length);

        }
</script>

所以，我的问题是数组没有正确发送。求助。

Answer 1

您正在联接data URI，而不是Blob s。

如果要求实际上是发布串联data URI的字符串化数组，则可以使用立即调用的函数表达式。 FileReader loadend事件异步返回结果。您可以将i传递给IIFE以在i循环中保留for引用

function trans(v) {
    var file    = document.querySelector(v).files;

    for (i = 0; i < file.length; i++) {
      (function(curr) {
        var reader  = new FileReader();
        reader.readAsDataURL(file[curr]);
        reader.onloadend = function () {
          blobs[curr]=reader.result;
        }
      })(i);
    }
    console.log(blobs.length);

}

将图像数组转换为blob格式并使用PHP进行渲染

1 个答案: