uniapp 上传图片再传其他的参数报错

多文件上次，后台循环去接收，前端这样写：```javascript
let imgs;
if (this.imageList.length != 0) {
imgs = this.imageList.map((value, index) => {
return {
name: "file" + index,
uri: value
}
});
} else{
imgs = '';
}

uni.uploadFile({
url: this.$serverUrlhunlian + '/user/editUserdataFile',
methods: 'POST',
files: imgs,
filePath: '',
name:'file',
formData: jsons,
header: {
'Content-Type': 'multipart/form-data',
'token': this.$store.state.user.token,
},
success: (res) => {
uni.hideLoading();
var dat = JSON.parse(res.data);
console.log(JSON.stringify(dat));
// {"msg":"操作失败","flag":false,"status":"error"}
if (dat.flag) {
uni.hideLoading();
uni.showToast({
title: '修改成功!'
});
setTimeout(function(){
uni.navigateBack({
delta: 1
})
}, 1000)
}else{
uni.showToast({
title: '提交失败，请检查是否有特殊字符',
icon: 'none'
})
}

                    },  
                    fail: (res) => {  
                        //console.log(res);  
                        uni.hideLoading();  
                        uni.showToast({  
                            title: '请求失败,请检查网络',  
                            icon: 'none'  
                        })  
                    }  
                });

选择图片： ```chooseImg() { //选择图片  
                uni.chooseImage({  
                    sourceType: ["camera", "album"],  
                    sizeType: ["compressed"],  
                    count: 6 - this.imageLists.length - this.imageList.length,  
                    success: (res) => {  
                        //console.log(JSON.stringify(res))  
                            this.imageList = this.imageList.concat(res.tempFilePaths);  
                    }  
                })  
            },```