Ajax:下载文件

          $.ajax({
            type: "Post",
            timeout : 200000,
 //文件较大的要设置的时间长一些
            xhrFields: {
              responseType: "arraybuffer",
 //buffer文件必须要加xhr原生的支持
            },
            url: "http://152.136.174.209:8080/api/exportPdf",
            data: JSON.stringify(sendData),
 //post接口的参数
            contentType: "application/json;charset=utf-8",
 //表示传的是json
            success: function (result) {
              console.log(result);
              let blob = new Blob([result], {
   //因为是buffer 用blob大对象接收
                type: "application/pdf",
  //设置类型的Wie想要的类型，如：pdf,excel等
              });
              let link = document.createElement("a");
              link.href = window.URL.createObjectURL(blob);
              link.download = "单位自查表.pdf";
 //名字
              link.click();
              window.URL.revokeObjectURL(link.href);

            },
          });