Question

前端将图片转换为base64位无法使用ajax传递怎么解决?

Answer 1

前端生成的代码最终格式如下：

data:image/png;base64,xxxxxxxxxx...........

后端这样解码

base64=base64.Replace("data:image/png;base64,", "");

byte[] bytes =Convert.FromBase64String(base64);

MemoryStream memStream = new MemoryStream(bytes);

BinaryFormatter binFormatter = new BinaryFormatter;

return(System.Drawing.Image)binFormatter.Deserialize(memStream);

string base64Str = "图片的BASE64字符串";

byte[] bytes = System.Convert.FromBase64String(base64Str);

using (System.IO.MemoryStream ms = new System.IO.MemoryStream(bytes))

{return System.Drawing.Image.FromStream(ms);}

ajax({,url : form.action,,type : "POST",,data : formData,

dataType:"text",,processData : false,,success:function(data).window.location.href="${ctx}"+data;

xhr:function//在jquery函数中直接使用ajax的XMLHttpRequest对象

var xhr = new XMLHttpRequest

xhr.upload.addEventListener