項目中，需要實現獲取當前位置的經緯度，或者搜索某個位置并獲取經緯度信息，我使用的的是vue，地圖使用的是百度地圖。

默認自動獲取當前位置經緯度

拖動小紅標 獲取經緯度

關鍵詞 查詢獲取經緯度

首先，我們需要取百度官方申請一個地圖api秘鑰，https://lbsyun.baidu.com/apiconsole/key 進入后在應用管理，我的應用去申請即可。

申請好以后，我們打開vue項目中public文件下的index.html文件，拼接百度AK值并引入

<script type='text/javascript' src='http://api.map.baidu.com/api?v=2.0&ak=WFKACU6v7aiUdnkgtMCqdWBZC68KpUXv'></script>

如上所示，紅色區域為AK值，自行拼接自己的，可以設置權限為公開或者針對網址白名單。

<script type='text/javascript' src='http://api.map.baidu.com/api?v=2.0&ak=WFKACU6v7aiUdnkgtMCqdWBZC68KpUXv'></script>

我使用了elementui的彈窗，輸入框，提示，如果你沒使用elementui，記得更換哦！

HTML代碼

<template> <div> <el-dialog @close='clearDialog' :close-on-click-modal='false' :title='text' :visible.sync='popup' > <div class='form-layer'><el-form label- size='mini'> <el-form-item label='獲取定位'> <el-button type='primary' @click='fixedPos'>重新定位</el-button> </el-form-item> <el-form-item label='當前緯度'> <p>{{latitude}}</p> </el-form-item> <el-form-item label='當前經度'> <p>{{longitude}}</p> </el-form-item> <el-form-item> <div class='f-a-c'> <el-input v-model='keyWords' placeholder='請輸入地區' style='width: 230px;margin-right: 6px;'></el-input> <el-button type='primary' @click='setPlace' :disabled='!keyWords'>查詢</el-button> </div> </el-form-item></el-form><div id='map'></div> </div> <div slot='footer' class='dialog-footer'><el-button size='small' type='primary' v-if='type != ’2’' @click='btnSubmit()' >確 認</el-button><el-button size='small' @click='popup = false'>取 消</el-button> </div> </el-dialog> </div></template>

JS代碼

<script> export default { name: 'mapView', data() { return {map: null,local: null,mk: null,latitude: ’’,longitude: ’’,keyWords: ’’ }; }, methods: { // 打開彈窗，name為彈窗名稱 async openDialog(name) {this.text = name;this.popup = true;this.initMap(); }, // 確認 btnSubmit() {let key = { latitude: this.latitude, longitude: this.longitude}// 打印經緯度console.log(key);this.popup = false; }, initMap() {this.$nextTick(() => { this.map = new BMap.Map('map'); let point = new BMap.Point(116.404, 39.915); this.map.centerAndZoom(point, 12); this.map.enableScrollWheelZoom(true); // 開啟鼠標滾輪縮放 this.map.addControl(new BMap.NavigationControl()); this.fixedPos();}); }, // 點擊定位-定位到當前位置 fixedPos() {const _this = this;const geolocation = new BMap.Geolocation();this.confirmLoading = true;geolocation.getCurrentPosition(function (r) { if (this.getStatus() == BMAP_STATUS_SUCCESS) { _this.handleMarker(_this, r.point); let myGeo = new BMap.Geocoder(); myGeo.getLocation( new BMap.Point(r.point.lng, r.point.lat), function (result) {_this.confirmLoading = false;if (result) { _this.latitude = result.point.lat; _this.longitude = result.point.lng;} } ); } else { _this.$message.error('failed' + this.getStatus()); }}); }, // 搜索地址 setPlace() {this.local = new BMap.LocalSearch(this.map, { onSearchComplete: this.searchPlace,});this.local.search(this.keyWords); }, searchPlace() {if (this.local.getResults() != undefined) { this.map.clearOverlays(); //清除地圖上所有覆蓋物 if (this.local.getResults().getPoi(0)) { let point = this.local.getResults().getPoi(0).point; //獲取第一個智能搜索的結果 this.map.centerAndZoom(point, 18); this.handleMarker(this, point); console.log('經度：' + point.lng + '--' + '緯度' + point.lat); this.latitude = point.lat; this.longitude = point.lng; } else { this.$message.error('未匹配到地點!'); }} else { this.$message.error('未找到搜索結果!');} }, // 設置標注 handleMarker(obj, point) {let that = this;obj.mk = new BMap.Marker(point);obj.map.addOverlay(obj.mk);obj.mk.enableDragging(); // 可拖拽obj.mk.addEventListener('dragend', function (e) { // 監聽標注的拖拽，獲取拖拽后的經緯度 that.latitude = e.point.lat; that.longitude = e.point.lng;});obj.map.panTo(point); }, } };</script>

CSS代碼

<style scoped> .form-layer { width: 100%; } #map { margin-top: 30px; width: 100%; height: 300px; border: 1px solid gray; box-sizing: border-box; overflow: hidden; } /deep/ .el-dialog { min-width: 550px; } /deep/ .el-dialog__body { padding: 10px; }</style>

完整代碼

<template> <div> <el-dialog @close='clearDialog' :close-on-click-modal='false' :title='text' :visible.sync='popup' > <div class='form-layer'><el-form label- size='mini'> <el-form-item label='獲取定位'> <el-button type='primary' @click='fixedPos'>重新定位</el-button> </el-form-item> <el-form-item label='當前緯度'> <p>{{latitude}}</p> </el-form-item> <el-form-item label='當前經度'> <p>{{longitude}}</p> </el-form-item> <el-form-item> <div class='f-a-c'> <el-input v-model='keyWords' placeholder='請輸入地區' style='width: 230px;margin-right: 6px;'></el-input> <el-button type='primary' @click='setPlace' :disabled='!keyWords'>查詢</el-button> </div> </el-form-item></el-form><div id='map'></div> </div> <div slot='footer' class='dialog-footer'><el-button size='small' type='primary' v-if='type != ’2’' @click='btnSubmit()' >確 認</el-button><el-button size='small' @click='popup = false'>取 消</el-button> </div> </el-dialog> </div></template><script> export default { name: 'mapView', data() { return {map: null,local: null,mk: null,latitude: ’’,longitude: ’’,keyWords: ’’ }; }, methods: { // 打開彈窗，name為彈窗名稱 async openDialog(name) {this.text = name;this.popup = true;this.initMap(); }, // 確認 btnSubmit() {let key = { latitude: this.latitude, longitude: this.longitude}// 打印經緯度console.log(key);this.popup = false; }, initMap() {this.$nextTick(() => { this.map = new BMap.Map('map'); let point = new BMap.Point(116.404, 39.915); this.map.centerAndZoom(point, 12); this.map.enableScrollWheelZoom(true); // 開啟鼠標滾輪縮放 this.map.addControl(new BMap.NavigationControl()); this.fixedPos();}); }, // 點擊定位-定位到當前位置 fixedPos() {const _this = this;const geolocation = new BMap.Geolocation();this.confirmLoading = true;geolocation.getCurrentPosition(function (r) { if (this.getStatus() == BMAP_STATUS_SUCCESS) { _this.handleMarker(_this, r.point); let myGeo = new BMap.Geocoder(); myGeo.getLocation( new BMap.Point(r.point.lng, r.point.lat), function (result) {_this.confirmLoading = false;if (result) { _this.latitude = result.point.lat; _this.longitude = result.point.lng;} } ); } else { _this.$message.error('failed' + this.getStatus()); }}); }, // 搜索地址 setPlace() {this.local = new BMap.LocalSearch(this.map, { onSearchComplete: this.searchPlace,});this.local.search(this.keyWords); }, searchPlace() {if (this.local.getResults() != undefined) { this.map.clearOverlays(); //清除地圖上所有覆蓋物 if (this.local.getResults().getPoi(0)) { let point = this.local.getResults().getPoi(0).point; //獲取第一個智能搜索的結果 this.map.centerAndZoom(point, 18); this.handleMarker(this, point); console.log('經度：' + point.lng + '--' + '緯度' + point.lat); this.latitude = point.lat; this.longitude = point.lng; } else { this.$message.error('未匹配到地點!'); }} else { this.$message.error('未找到搜索結果!');} }, // 設置標注 handleMarker(obj, point) {let that = this;obj.mk = new BMap.Marker(point);obj.map.addOverlay(obj.mk);obj.mk.enableDragging(); // 可拖拽obj.mk.addEventListener('dragend', function (e) { // 監聽標注的拖拽，獲取拖拽后的經緯度 that.latitude = e.point.lat; that.longitude = e.point.lng;});obj.map.panTo(point); }, } };</script><style scoped> .form-layer { width: 100%; } #map { margin-top: 30px; width: 100%; height: 300px; border: 1px solid gray; box-sizing: border-box; overflow: hidden; } /deep/ .el-dialog { min-width: 550px; } /deep/ .el-dialog__body { padding: 10px; }</style>

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