js-base64转换为file对象，ajax提交表单

水深无声 2022-04-22 02:10 92阅读 0赞

var img = "data:image/jpeg;base64,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";
    
    function dataURLtoFile(dataurl, filename) { //将base64转换为文件  
        var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],  
        bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);  
        while(n--){  
            u8arr[n] = bstr.charCodeAt(n);  
        }  
        return new File([u8arr], filename, {type:mime});  
    }
    
    function fileup() {  
        var form=document.forms[0];  
        var formData = new FormData();  
        formData.append("myfile", dataURLtoFile(img,"123.png"));   
        formData.append("name", "123");   
      
        $.ajax({   
         url: 'http://122.112.238.8:8080/api/v1/addface' ,   
         type: 'POST',   
         data: formData,   
         async: false,   
         cache: false,   
         contentType: false,   // 告诉jQuery不要去设置Content-Type请求头  
         processData: false,   // 告诉jQuery不要去处理发送的数据
         success: function (returndata) {   
           console.log(returndata);   
         },   
         error: function (returndata) {   
           alert(returndata);   
         }   
       });