我们的程序是前后端分离的。
后端是springboot，在IDEA中启动GismapApplication.java，访问http://localhost:8080/history/geometry?category=prefpgn&start=-5000&end=-221，就能看到数据了。
前端是vue，cmd到vue-gismap下，npm run dev，访问http://localhost:8090/#/specialmap，就能看到页面了。
但是后端和前端的ip和port一样，不能在同一台主机中启动，所以要把前后端的端口号port设置成不同的，才能联调。
一、设置端口号
- 修改后端端口号
Springboot修改端口号；
D:\gismap\java\master\gismap\src\main\resources\application.yml
修改port即可，我把端口号由之前的8080，修改为了8081。
server:
port: 8081
#数据库配置
spring:
datasource:
#alibaba数据连接池
type: com.alibaba.druid.pool.DruidDataSource
#postgresql驱动
driverClassName: org.postgresql.Driver
#数据库地址、账号、密码
url: jdbc:postgresql://127.0.0.1:5432/postgres
username: postgres
password: 123456
druid:
#初始化连接大小
initial-size: 8
#最小空闲连接数
min-idle: 5
#最大连接数
max-active: 10
#查询超时时间
query-timeout: 6000
#事务查询超时时间
transaction-query-timeout: 6000
#关闭空闲连接超时时间
remove-abandoned-timeout: 1800
filters: stat,config
mybatis:
#sql映射文件
mapper-locations: classpath:mapper/*.xml
#model
type-aliases-package: com.history.gismap.model
#log日志配置
logging:
config: classpath:logback-boot.xml
- 修改前端端口号
修改vue端口号：
vue-gismap/config/index.js
修改port即可，我把8080改成了8082
'use strict'
// Template version: 1.3.1
// see http://vuejs-templates.github.io/webpack for documentation.
const path = require('path')
module.exports = {
dev: {
// Paths
assetsSubDirectory: 'static',
assetsPublicPath: '/',
proxyTable: {},
// Various Dev Server settings
host: 'localhost', // can be overwritten by process.env.HOST
port: 8082, // can be overwritten by process.env.PORT, if port is in use, a free one will be determined
autoOpenBrowser: false,
errorOverlay: true,
notifyOnErrors: true,
poll: false, // https://webpack.js.org/configuration/dev-server/#devserver-watchoptions-
/**
* Source Maps
*/
// https://webpack.js.org/configuration/devtool/#development
devtool: 'cheap-module-eval-source-map',
// If you have problems debugging vue-files in devtools,
// set this to false - it *may* help
// https://vue-loader.vuejs.org/en/options.html#cachebusting
cacheBusting: true,
cssSourceMap: true
},
build: {
// Template for index.html
index: path.resolve(__dirname, '../dist/index.html'),
// Paths
assetsRoot: path.resolve(__dirname, '../dist'),
assetsSubDirectory: 'static',
assetsPublicPath: '/',
/**
* Source Maps
*/
productionSourceMap: true,
// https://webpack.js.org/configuration/devtool/#production
devtool: '#source-map',
// Gzip off by default as many popular static hosts such as
// Surge or Netlify already gzip all static assets for you.
// Before setting to `true`, make sure to:
// npm install --save-dev compression-webpack-plugin
productionGzip: false,
productionGzipExtensions: ['js', 'css'],
// Run the build command with an extra argument to
// View the bundle analyzer report after build finishes:
// `npm run build --report`
// Set to `true` or `false` to always turn it on or off
bundleAnalyzerReport: process.env.npm_config_report
}
}
二、解决跨域问题
因为前后端端口号不一样，所以会遇到跨域问题。
会提示：No 'Access-Control-Allow-Origin' header is present on the requested resource
就是因为跨域，前端无法请求后端数据。
解决跨域问题也很简单。后端加一个注释就可以，@CrossOrigin。
D:\gismap\java\master\gismap\src\main\java\com\history\gismap\controller\MapController.java
package com.history.gismap.controller;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.history.gismap.model.GeometryModel;
import com.history.gismap.service.MapService;
import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.Geometry;
import lombok.extern.slf4j.Slf4j;
import org.geotools.geojson.geom.GeometryJSON;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import java.io.StringWriter;
import java.util.List;
@Controller
@RequestMapping(value = "/history")
@Slf4j
public class MapController {
@Autowired
private MapService mapService;
/**
* 根据表名和时间区间输出对象
* @param category 表名简写
* @param start 起始时间
* @param end 终止时间
* @return
*/
@ResponseBody
@GetMapping("/geometry")
@CrossOrigin
public JSONObject getPoint(@RequestParam("category") String category,@RequestParam("start") Integer start,@RequestParam("end") Integer end){
try {
List<GeometryModel> result=mapService.getDynastyGeom(category,start,end);
JSONObject jsonObject=new JSONObject();
jsonObject.put("number",result.size());
JSONArray jsonArray=new JSONArray();
GeometryJSON geometryJSON=new GeometryJSON();
for (GeometryModel g:result) {
JSONObject geom=new JSONObject();
geom.put("gid",g.getGId());
geom.put("namepy",g.getNamePy());
geom.put("namech",g.getNameCh());
geom.put("nameft",g.getNameFt());
geom.put("presloc",g.getPresLoc());
geom.put("typepy",g.getTypePy());
geom.put("typech",g.getTypeCh());
geom.put("levrank",g.getLevRank());
geom.put("begyr",g.getBegYr());
geom.put("begrule",g.getBegRule());
geom.put("endyr",g.getEndYr());
geom.put("endrule",g.getEndRule());
geom.put("geosrc",g.getGeoSrc());
geom.put("compiler",g.getCompiler());
geom.put("gecomplr",g.getGecomplr());
geom.put("checker",g.getChecker());
geom.put("entdate",g.getEntDate());
geom.put("begchgty",g.getBegChgTy());
geom.put("endchgty",g.getEndChgTy());
StringWriter writer = new StringWriter();
geometryJSON.write(g.getGeometry(),writer);
geom.put("geometry",JSONObject.parse(writer.toString()));
jsonArray.add(geom);
}
jsonObject.put("list",jsonArray);
log.info("入参类别：{}，起始时间：{}，截至时间：{}",category,start,end);
return jsonObject;
}catch (Exception e){
log.error("程序错误类型：",e);
return null;
}
}
}
三、vue+axios网络请求
- 安装模块
首先安装axios模块
npm install axios
2.axios get请求
一个非常简单的get请求，写在组件SpecialMap.vue里。
初始化加载getdata()函数，更新axiosdata数据，写在div中，vue用两个花括号{{}}，在模板中引入数据。
<template>
<div>
{{axiosdata}}
专题地图
</div>
</template>
<script>
import axios from 'axios'
export default {
data() {
return {
axiosdata: null
}
},
methods: {
getdata() {
axios.get('http://localhost:8081/history/geometry?category=prefpgn&start=-5000&end=-221').then((response) => {
this.axiosdata = response.data
console.log(response.data)
}).catch((response) => {
console.log(response)
})
}
},
mounted() {
this.getdata()
}
}
</script>
模板搭建好了，leaflets能加载底图和覆盖物了，axios能和后端交互了，接下来要做的，就是把要实现的功能都实现了。
来源：CSDN
作者：铁血阿郎
链接：https://blog.csdn.net/sinat_41310868/article/details/104743648