uniapp上传文件并获取上传进度

1. 上传普通文件

uni.chooseMessageFile({
            count: 1,
            success: (res) => {
                console.log(res)
                console.log("res123456", res.tempFiles[0].path)
                const uploadTask = uni.uploadFile({
                    url: 'http://localhost:8000/demo',
                    filePath: res.tempFiles[0].path,
                    name: 'file',
                    formData: {
                        name: "zhangsan",
                        age: 18
                    },
                    success: (res) => {
                        console.log("res123456", res.data)
                    },
                    fail: (err) => {
                        console.log("err", err)
                    }
                })

                uploadTask.onProgressUpdate(res => {
                    console.log('上传进度' + res.progress);
                    console.log('已经上传的数据长度' + res.totalBytesSent);
                    console.log('预期需要上传的数据总长度' + res.totalBytesExpectedToSend);
                })
            }
        })

2. 上传图片

uni.chooseImage({
            count: 1,
            sizeType: ['original', 'compressed'],
            sourceType: ['album', 'camera'],
            success: (res) => {
                console.log("res123456", res.tempFilePaths)
                const uploadTask = uni.uploadFile({
                    url: 'http://localhost:8000/demo',
                    filePath: res.tempFilePaths[0],
                    name: 'file',
                    formData: {
                        name: "zhangsan",
                        age: 18
                    },
                    success: (res) => {
                        console.log("res123456", res.data)
                    },
                    fail: (err) => {
                        console.log("err", err)
                    }
                })

                uploadTask.onProgressUpdate(res => {
                    console.log('上传进度' + res.progress);
                    console.log('已经上传的数据长度' + res.totalBytesSent);
                    console.log('预期需要上传的数据总长度' + res.totalBytesExpectedToSend);
                })
            }
        })

参考文档