对于文件上传应该修改,所以我尝试手动组合上传字符串:
function submitdata(){
//var data = new FormData();
var sb="";
var BOUNDARY = "-------------------------4827543632391";
sb+="--"+BOUNDARY;
sb+="\r\n";
sb+="Content-Disposition: form-data; name=\"fileinput\" filename=\"004.jpg\" \r\n";
sb+="Content-Type: image/jpeg\r\n\r\n";
.....
var reader = new FileReader();
reader.readAsBinaryString(data);
//fd.append("blob", sb);
reader.onload = function(e){
sb+=this.result;
sb+="\r\n--" + BOUNDARY + "--\r\n";
var datasubmit="Content-Type:multipart/form-data; boundary="+BOUNDARY+"\n";
datasubmit+="Content-Length: "+eval(sb.length)+ "\r\n\r\n";
var xhr = new XMLHttpRequest();
xhr.open("POST", "addimages");
xhr.setRequestHeader("Content-Type", "multipart/form-data");
xhr.overrideMimeType('multipart/form-data');
xhr.sendAsBinary(datasubmit+sb);
}
}
每次提交数据主体为:
Content-Type:multipart/form-data; boundary=-------------------------4827543632391
Content-Length: 283111
我想把上面的部分听到不是身体!
---------------------------4827543632391
Content-Disposition: form-data; name="fileinput" filename="004.jpg"
Content-Type: image/jpeg
ÿØÿà�JFIF������ÿÛ�C� %# , #&')*)-0-(0%()(ÿÛ�C (((((((((((((((((((((((((((((((((((((((((((((((((((ÿÀ�@m"�ÿÄ����������� ÿÄ�µ���}�!1AQa"q2¡#B±ÁRÑð$3br %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz¢£¤¥¦§¨©ª²³´µ¶·¸¹ºÂÃÄÅÆÇÈÉÊÒÓÔÕÖ×ØÙÚáâãäåæçèéêñòóôõö÷øùúÿÄ�������� ÿÄ�µ��w�!1AQaq"2B¡±Á #3RðbrÑ $4á%ñ&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz....
我想要的是:
Request Headers From Upload Stream
Content-Length: 283122
Content-Type: multipart/form-data;boundary=---------------------------23281168279961
我只是不知道我的
内容类型:multipart/form-data;......到流表单的标题部分
谁能给我一个带有“Content-Type:multipart/form-data;..”的http包的例子吗?或者告诉我如何编写 java-script 将 Content-Type: 放在头部。我试过 xhr.setRequestHeader(),它写的是 httphearder 但不是上传流标头。