uni.uploadFile时无法携带formdata

const formData = encryptSign({  
            ...data,  
            appid: Config.AppId,  
            time: Date.parse(new Date().toString()) / 1000  
        }, Config.AppSecret)  

        console.log(formData)  

        uni.uploadFile({  
            url: `${httpd.defaults.baseURL}/my/company/auth`,  
            filePath: tmpFile,  
            name: 'file',  
            header: {  
                'JSSESSIONID': uni.getStorageSync(Config.StorageToken)  
            },  
            formData: formData,  
            success: res => {  
                if (res.statusCode === 200) {  
                    return resolve(JSON.parse(res.data))  
                } else {  
                    reject(JSON.parse(res.data))  
                }  
            },  
            fail: err => reject(err)  
        })

console打印值参考：
appid: ""
founded_date: "2022-10-18"
legal: "321"
name: "123"
reg_capital: 1
sign: "**"
time: 1666060646