阿里云oss post上传文件 JavaScript代码示例 $.ajax()

使用$.ajax来post文件到Oss上

//policy 要经过base64编码， signature 还要进一步处理，可以查阅官方文档
function OssUpload(param, file, fileName, callBack) {
var policyBase64 = Base64.encode(param.policy);
var signature = param.signature.split(':')[1];
var filePathName = param.filePath + "/" + param.fileName;
var fileFullName = param.contentHostName + "/" + filePathName;
var request = new FormData();
request.append('OSSAccessKeyId', param.accessKeyId);
request.append('policy', policyBase64);
request.append('Signature', signature);
request.append('key', filePathName);
for (var i in param.metaDatas) {
request.append(i, param.metaDatas[i]);
}
request.append('file', file);
request.append('submit', "Upload to OSS");
$.ajax({
url: param.contentHostName,
data: request,
processData: false,
cache: false,
async: false,
contentType: false,
//关键是要设置contentType 为false，不然发出的请求头 没有boundary
//该参数是让jQuery去判断contentType
type: "POST",
success: function (data, textStatus, request) {
if (textStatus === "nocontent") {
callBack(fileFullName);
alert("success!");
} else {
alert(textStatus);
}
}
});
}