vue调用百度地图获取经纬度

项目中，需要实现获取当前位置的经纬度，或者搜索某个位置并获取经纬度信息，我使用的的是vue，地图使用的是百度地图。

默认自动获取当前位置经纬度

拖动小红标 获取经纬度

关键词 查询获取经纬度

前期准备

首先，我们需要取百度官方申请一个地图api秘钥，https://lbsyun.baidu.com/apiconsole/key进入后在应用管理，我的应用去申请即可。

申请好以后，我们打开vue项目中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，红色区域为AK值，自行拼接自己的，可以设置权限为公开或者针对网址白名单。

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

我使用了elementui的弹窗，输入框，提示，如果你没使用elementui，记得更换哦！

HTML代码

<template>
<div>
  <el-dialog
    @close="clearDialog"
    :close-on-click-modal="false"
    :title="text"
    style="text-align: left"
    :visible.sync="popup"
    width="30%"
  >
    <div class="form-layer">
      <el-form label-width="100px" size="mini">
        <el-form-item label="获取定位">
          <el-button type="primary" @click="fixedPos">重新定位</el-button>
        </el-form-item>
        <el-form-item label="当前纬度">
          <p>{{latitude}}</p>
        </el-form-item>
        <el-form-item label="当前经度">
          <p>{{longitude}}</p>
        </el-form-item>
        <el-form-item>
          <div class="f-a-c">
            <el-input v-model="keyWords" placeholder="请输入地区" style="width: 230px;margin-right: 6px;"></el-input>
            <el-button type="primary" @click="setPlace" :disabled="!keyWords">查询</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()"
        >确 认</el-button
      >
      <el-button size="small" @click="popup = false">取 消</el-button>
    </div>
  </el-dialog>
</div>
</template>

JS代码

<script>
export default {
  name: "mapView",
  data() {
    return {
      map: null,
      local: null,
      mk: null,
      latitude: '',
      longitude: '',
      keyWords: ''
    };
  },
  methods: {
    // 打开弹窗，name为弹窗名称
    async openDialog(name) {
      this.text = name;
      this.popup = true;
      this.initMap();
    },
    // 确认
    btnSubmit() {
      let key = {
        latitude: this.latitude,
        longitude: this.longitude
      }
      // 打印经纬度
      console.log(key);
      this.popup = false;
    },
    initMap() {
      this.$nextTick(() => {
        this.map = new BMap.Map("map");
        let point = new BMap.Point(116.404, 39.915);
        this.map.centerAndZoom(point, 12);
        this.map.enableScrollWheelZoom(true); // 开启鼠标滚轮缩放
        this.map.addControl(new BMap.NavigationControl());
        this.fixedPos();
      });
    },
    // 点击定位-定位到当前位置
    fixedPos() {
      const _this = this;
      const geolocation = new BMap.Geolocation();
      this.confirmLoading = true;
      geolocation.getCurrentPosition(function (r) {
        if (this.getStatus() == BMAP_STATUS_SUCCESS) {
          _this.handleMarker(_this, r.point);
          let myGeo = new BMap.Geocoder();
          myGeo.getLocation(
            new BMap.Point(r.point.lng, r.point.lat),
            function (result) {
              _this.confirmLoading = false;
              if (result) {
                _this.latitude = result.point.lat;
                _this.longitude = result.point.lng;
              }
            }
          );
        } else {
          _this.$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(); //清除地图上所有覆盖物
        if (this.local.getResults().getPoi(0)) {
          let point = this.local.getResults().getPoi(0).point; //获取第一个智能搜索的结果
          this.map.centerAndZoom(point, 18);
          this.handleMarker(this, point);
          console.log("经度：" + point.lng + "--" + "纬度" + point.lat);
          this.latitude = point.lat;
          this.longitude = point.lng;
        } else {
          this.$message.error("未匹配到地点!");
        }
      } else {
        this.$message.error("未找到搜索结果!");
      }
    },
    // 设置标注
    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) {
        // 监听标注的拖拽，获取拖拽后的经纬度
        that.latitude = e.point.lat;
        that.longitude = e.point.lng;
      });
      obj.map.panTo(point);
    },
  }
};
</script>

CSS代码

<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>

完整代码

<template>
<div>
  <el-dialog
    @close="clearDialog"
    :close-on-click-modal="false"
    :title="text"
    style="text-align: left"
    :visible.sync="popup"
    width="30%"
  >
    <div class="form-layer">
      <el-form label-width="100px" size="mini">
        <el-form-item label="获取定位">
          <el-button type="primary" @click="fixedPos">重新定位</el-button>
        </el-form-item>
        <el-form-item label="当前纬度">
          <p>{{latitude}}</p>
        </el-form-item>
        <el-form-item label="当前经度">
          <p>{{longitude}}</p>
        </el-form-item>
        <el-form-item>
          <div class="f-a-c">
            <el-input v-model="keyWords" placeholder="请输入地区" style="width: 230px;margin-right: 6px;"></el-input>
            <el-button type="primary" @click="setPlace" :disabled="!keyWords">查询</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()"
        >确 认</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: {
    // 打开弹窗，name为弹窗名称
    async openDialog(name) {
      this.text = name;
      this.popup = true;
      this.initMap();
    },
    // 确认
    btnSubmit() {
      let key = {
        latitude: this.latitude,
        longitude: this.longitude
      }
      // 打印经纬度
      console.log(key);
      this.popup = false;
    },
    initMap() {
      this.$nextTick(() => {
        this.map = new BMap.Map("map");
        let point = new BMap.Point(116.404, 39.915);
        this.map.centerAndZoom(point, 12);
        this.map.enableScrollWheelZoom(true); // 开启鼠标滚轮缩放
        this.map.addControl(new BMap.NavigationControl());
        this.fixedPos();
      });
    },
    // 点击定位-定位到当前位置
    fixedPos() {
      const _this = this;
      const geolocation = new BMap.Geolocation();
      this.confirmLoading = true;
      geolocation.getCurrentPosition(function (r) {
        if (this.getStatus() == BMAP_STATUS_SUCCESS) {
          _this.handleMarker(_this, r.point);
          let myGeo = new BMap.Geocoder();
          myGeo.getLocation(
            new BMap.Point(r.point.lng, r.point.lat),
            function (result) {
              _this.confirmLoading = false;
              if (result) {
                _this.latitude = result.point.lat;
                _this.longitude = result.point.lng;
              }
            }
          );
        } else {
          _this.$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(); //清除地图上所有覆盖物
        if (this.local.getResults().getPoi(0)) {
          let point = this.local.getResults().getPoi(0).point; //获取第一个智能搜索的结果
          this.map.centerAndZoom(point, 18);
          this.handleMarker(this, point);
          console.log("经度：" + point.lng + "--" + "纬度" + point.lat);
          this.latitude = point.lat;
          this.longitude = point.lng;
        } else {
          this.$message.error("未匹配到地点!");
        }
      } else {
        this.$message.error("未找到搜索结果!");
      }
    },
    // 设置标注
    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) {
        // 监听标注的拖拽，获取拖拽后的经纬度
        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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