ajax 传文件

function fabu(){
    var form = new         
        FormData(document.getElementById("form1"));
    $.ajax({
        type: "POST", //必须用post
        url: "http://192.168.0.117:8080/agriculture/adddoc.do",
        crossDomain: true,
        jsonp: "callback",
        data: form,
        contentType: false, //必须
        processData: false,
        success:function(data) {
            alert('发布成功');
            console.log(data);
        }

    })
}

<form id="form1" enctype="multipart/form-data"></form>