下载文件时需要传header的解决方案

this.$http.get(url,{
            params: {id: ids},
            headers: {"header1": "test1", "header2": "test2"},
            responseType: 'blob'
          }).then(res => {
            let fileName = '';
            if(res.headers["content-disposition"]){
              var a = document.createElement('a');
              fileName = res.headers["content-disposition"].split(";")[1].split("=")[1];
              a.download = fileName;
              a.href = URL.createObjectURL(res.data);    // blob内容         
              a.click();
            }else{
              this.$message({
                message: "下载文件出错！",
                type: "warning"
              });                        
            }
          }).catch(err => {
            this.$message({
              message: err,
              type: "err"
            });  
          })