调用后端接口下载文件

post请求方式
模拟form表单提交的方式
openPostWindow = function (exportparams) {
var form = $(“<form>”);//定义一个form表单
form.attr(“id”, “downloadform”);
form.attr(“style”, “display:none”);
form.attr(“target”, “_blank”);
form.attr(“method”, “post”);
form.attr(“action”, “/EXPORT/user/change-history.json”);
var input1 = $(“<input>”);
input1.attr(“type”, “hidden”);
input1.attr(“name”, “param”);
input1.attr(“value”, JSON.stringify(exportparams));
form.append(input1);
$(“body”).append(form);//将表单放置在web中

form.submit();//表单提交
$(“#downloadform”).remove();
}
get请求方式
function exportInfo() {
var params = getParams();
delete params.pageDto;
delete params.userName;
window.open(‘/EXPORT/leaveInfo/list.json?’ + $.param(params), ‘_blank’);
}