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Exif.js获取手机拍摄照片的经纬度

news 2025/8/15 6:25:26

概述

最近有个需求用户上传照片，并获取到照片拍摄时候的位置。网上搜索了相关资料，找到了Exif.js。本文就分享一下我的实验结果和实现。

分析

实现这样的一个需求有两种方式：

强制用户拍照，拍完照片后获取当前的位置作为拍摄照片时候的位置；
从相册选择照片，再获取照片的位置信息。

结论

快速的用uni-app搭了一个工程，试了下，结论是：

在安卓手机中拍摄的照片可以获取到，可以支持选择和拍摄两种方式；
在苹果手机中获取不到，只能拍摄。

实现

测试代码很简单，添加了一个按钮，点击按钮的时候选择照片，再将所有的信息打印输出。

<template><view class="content"><button @click="chooseImage">chooseImage</button><img style="width: 100%;" :src="imageUrl" id="image"></img></view>
</template><script>export default {data() {return {imageUrl: ''}},methods: {chooseImage() {const that = thisuni.chooseImage({count: 1, //最多可以选择的图片张数，默认9sizeType: ['original'], //original 原图，compressed 压缩图，默认二者都有sourceType: ['album', 'camera'],//album 从相册选图，camera 使用相机，默认二者都有。如需直接开相机或直接选相册，请只使用一个选项success: (res) => { //成功返回的函数that.imageUrl = res.tempFilePaths[0]console.log('图片路径为：', res.tempFilePaths[0]) //选着的图片const img1 = new Image()img1.src = res.tempFilePaths[0]img1.onload = () => {EXIF.getData(img1, function() {const allMetaData = EXIF.getAllTags(this);console.log(allMetaData)});}},fail: (err) => { //图片接口调用失败的回调函数	console.log('chooseImage fail', err)}})}}}
</script>

安卓手机中getAllTags返回的数据如下：

{"undefined": "Redmi Note 12 Pro","ImageHeight": 2448,"Make": "Xiaomi","Orientation": 1,"DateTime": "2025:08:02 12:29:54","GPSInfoIFDPointer": 4677,"YResolution": 72,"XResolution": 72,"ImageWidth": 3264,"Model": "22101316C","Software": "MediaTek Camera Application","ImageDescription": "","YCbCrPositioning": 2,"ExifIFDPointer": 501,"ResolutionUnit": 2,"ExifVersion": "","ExposureBias": 0,"ExposureProgram": "Not defined","ColorSpace": 1,"MaxApertureValue": 2,"PixelYDimension": 2448,"BrightnessValue": 7,"DateTimeOriginal": "2025:08:02 12:29:54","FlashpixVersion": "0100","SubsecTimeOriginal": "850","WhiteBalance": "Auto white balance","InteroperabilityIFDPointer": 4934,"ExposureMode": 0,"ExposureTime": 0.019996,"Flash": "Flash did not fire, compulsory flash mode","SubsecTime": "850","FNumber": 2.2,"PixelXDimension": 3264,"ISOSpeedRatings": 329,"ComponentsConfiguration": "YCbCr","FocalLengthIn35mmFilm": 16,"SubsecTimeDigitized": "850","DigitalZoomRation": 1,"DateTimeDigitized": "2025:08:02 12:29:54","ShutterSpeedValue": 2.321,"MeteringMode": "CenterWeightedAverage","FocalLength": 1.66,"SceneCaptureType": "Standard","LightSource": "Other","GPSLatitude": [22,33,4.9248],"GPSAltitude": 0,"GPSLatitudeRef": "N","GPSSpeed": 0,"GPSAltitudeRef": 0,"GPSProcessingMethod": "network","GPSSpeedRef": "K","GPSVersionID": "2.2.0.0","GPSLongitudeRef": "E","GPSTimeStamp": [4,29,54],"GPSLongitude": [113,52,38.352],"GPSDateStamp": "2025:08:02","thumbnail": {"YResolution": 72,"Orientation": 1,"Compression": 6,"JpegIFOffset": 5155,"JpegIFByteCount": 27648,"XResolution": 72,"undefined": "2025:08:02 12:29:54","YCbCrPositioning": 2,"ResolutionUnit": 2,"blob": {}}
}