阜城网站建设价格,国内新闻最新消息简短,南昌网站排名,网站还没有做可以备案吧本篇将使用echarts框架进行柱状图和折线图绘制。
目录
1.绘制效果
2.安装echarts 3.前端代码
4.后端代码 1.绘制效果 2.安装echarts
// 安装echarts版本4 npm i -D echarts4 3.前端代码
src/api/api.js
//业务服务调用接口封装import service from ../service.js
//npm …本篇将使用echarts框架进行柱状图和折线图绘制。
目录
1.绘制效果
2.安装echarts 3.前端代码
4.后端代码 1.绘制效果 2.安装echarts
// 安装echarts版本4 npm i -D echarts4 3.前端代码
src/api/api.js
//业务服务调用接口封装import service from ../service.js
//npm i qs -D
import qs from qs//登录接口
export function login(data) {return service({method: post,url: /login,data})
}//学生信息查询接口
export function students(params) {return service({method: get,url: /api/students,params})
}//删除学生信息
export function delstudentsbyid(id) {return service({method: get,//此处应用模板字符串传参url: /api/students/del?id${id}})
}export function delstudentsbyreqid(id) {return service({method: get,//此处应用模板字符串传参url: /api/students/del/${id}})
}export function addStudent(data) {//data qs.stringify(data)return service({method: post,url: /api/info,data})
}export function updateStudent(data) {return service({method: post,url: /api/updateinfo,data})
}export function getInfo() {return service({method: get,url: /api/getinfo})
}export function delinfo(id) {return service({method: get,//此处应用模板字符串传参url: /api/info/del/id${id}})
}export function dataview(id) {return service({method: get,url: /api/data/dataview})
}
src/components/common/dataanalyse/DataView.vue
templatediv classdata-viewel-carddiv idmain1/div/el-cardel-carddiv idmain2/div/el-card/div
/templatescript
import { dataview } from /api/api.jsexport default {data() {return {name: }},created() {//http获取服务端数据,huizhe 折线图dataview().then(res {console.log(res)if (200 res.data.status) {let {legend, xAxis, series} res.data.datathis.draw(legend, xAxis, series)}})},mounted() {//初始化实例let myChart this.$echarts.init(document.getElementById(main1))myChart.setOption({title: {text: 大佬学vue分数},tooltip: {},xAxis: {data: [张三, 李四, 王五, 赵六]},yAxis: {},series: [{name: 人数,// bar: 柱状图 line: 折线图type: bar,data: [90, 100, 85, 70]}]})},methods: {draw(legend, xAxis, series) {let myChart1 this.$echarts.init(document.getElementById(main2))let option {title: {text: 会话量},tooltip: {trigger: axis},legend: {data: legend},xAxis: {type: category,data: xAxis},yAxis: {type: value},series: series}myChart1.setOption(option)}}
}
/scriptstyle langscss
.data-view {width: 100%;display: flex;justify-content: space-between;.el-card {width: 50%;#main1, #main2 {height: 500px;}}
}
/style
4.后端代码
server.go
package mainimport (main/controllernet/httpgithub.com/gin-contrib/corsgithub.com/gin-gonic/gin
)/*
// 错误 server.go:4:2: package main/controller is not in GOROOT (/home/tiger/go/go/src/main/controller)
go mod init main//错误 server.go:7:2: no required module provides package github.com/gin-gonic/gin; to add it:
go get github.com/gin-gonic/gin//处理跨域框架
go get github.com/gin-contrib/cors
*//*
当客户端尤其是基于 Web 的客户端想要访问 API 时服务器会决定允许哪些客户端发送请求。这是通过使用称为 CORS 来完成的它代表跨源资源共享。
跨域资源共享 CORS 是一种机制允许从提供第一个资源的域之外的另一个域请求网页上的受限资源。
*/func CrosHandler() gin.HandlerFunc {return func(context *gin.Context) {context.Writer.Header().Set(Access-Control-Allow-Origin, *)context.Header(Access-Control-Allow-Origin, *) // 设置允许访问所有域context.Header(Access-Control-Allow-Methods, POST,GET,OPTIONS,PUT,DELETE,UPDATE)context.Header(Access-Control-Allow-Headers, Authorization, Content-Length, X-CSRF-Token, Token,session,X_Requested_With,Accept, Origin, Host, Connection, Accept-Encoding, Accept-Language,DNT, X-CustomHeader, Keep-Alive, User-Agent, X-Requested-With, If-Modified-Since, Cache-Control, Content-Type, Pragma,token,openid,opentoken)context.Header(Access-Control-Expose-Headers, Content-Length, Access-Control-Allow-Origin, Access-Control-Allow-Headers,Cache-Control,Content-Language,Content-Type,Expires,Last-Modified,Pragma,FooBar)context.Header(Access-Control-Max-Age, 172800)context.Header(Access-Control-Allow-Credentials, true)context.Set(content-type, application/json) //设置返回格式是json//处理请求context.Next()}
}// http://127.0.0.1:8181/ping
// http://127.0.0.1:8181/index
func main() {r : gin.Default()// 设置全局跨域访问//r.Use(CrosHandler())//cors处理跨域corsConfig : cors.DefaultConfig()corsConfig.AllowCredentials truecorsConfig.AllowHeaders []string{content-type, Origin, token, username}corsConfig.AllowOrigins []string{http://localhost:8080, http://localhost:8081}corsConfig.AllowMethods []string{POST, GET, OPTIONS, PUT, DELETE, UPDATE}r.Use(cors.New(corsConfig))//r.Use(cors.Default())// 返回一个json数据r.GET(/ping, func(c *gin.Context) {c.JSON(200, gin.H{message: pong,num: 888,})})// 返回一个html页面r.LoadHTMLGlob(templates/*)r.GET(/index, func(c *gin.Context) {c.HTML(http.StatusOK, index.html, nil)})r.POST(/login, controller.LoginPost)r.POST(/formlogin, controller.FormLoginPost)r.POST(/upload, controller.UploadFile)r.GET(/api/students, controller.GetStudentList)r.GET(/api/students/del, controller.DelStudent)r.GET(/api/students/del/:id, controller.DelStudentByReq)r.POST(/api/info, controller.AddStudent)r.GET(/api/getinfo, controller.GetInfo)r.POST(api/updateinfo, controller.UpdateStudent)r.GET(/api/info/del/:id, controller.DelIfo)r.GET(api/works, controller.Works)r.GET(/api/data/dataview, controller.DataView)//r.Run() // r.Run(:8080) 监听并在 0.0.0.0:8080 上启动服务r.Run(:8181)
}controller/dataview.go
package controllerimport (net/httpgithub.com/gin-gonic/gin
)/*
//嵌套json举例
type Person struct {Name string json:nameAge int json:ageAddress struct {Street string json:streetCity string json:city} json:address
}person : Person{张三, 20, struct {Street string json:streetCity string json:city} {北京路, 广州市,}
}
c.JSON(200, person)
*//*
// 给前端发送如下数据
{legend: [技术总监, 产品经理, 后端开发, 前端开发, 运维/测试],xAxis: [星期一, 星期二, 星期三, 星期四, 星期五, 星期六, 星期日],series: [{name: 技术总监,type: line,stack: 总量,data: [80, 83, 84, 40, 44, 11, 12]},{name: 产品经理,type: line,stack: 总量,data: [66, 34, 39, 42, 45, 20, 30]},{name: 后端开发,type: line,stack: 总量,data: [66, 65, 59, 44, 33, 10, 20]},{name: 前端开发,type: line,stack: 总量,data: [33, 33, 44, 55, 55, 11, 23]},{name: 运维/测试,type: line,stack: 总量,data: [67, 45, 32, 40, 27, 11, 59]},]
}
*/type Response struct {Status int json:statusMsg string json:msgData interface{} json:data
}type TSeries struct {Name string json:nameType string json:typeStack string json:stackData []int json:data
}type DataItem struct {Legend []string json:legendXAxis []string json:xAxisSeries []TSeries json:series
}var dataItem DataItem{Legend: []string{技术总监, 产品经理, 后端开发, 前端开发, 运维/测试},XAxis: []string{星期一, 星期二, 星期三, 星期四, 星期五, 星期六, 星期日},Series: []TSeries{{Name: 技术总监,Type: line,Stack: 总量,Data: []int{80, 83, 84, 40, 44, 11, 12},},{Name: 产品经理,Type: line,Stack: 总量,Data: []int{66, 34, 39, 42, 45, 20, 30},},{Name: 后端开发,Type: line,Stack: 总量,Data: []int{66, 65, 59, 44, 33, 10, 20},},{Name: 前端开发,Type: line,Stack: 总量,Data: []int{33, 33, 44, 55, 55, 11, 23},},{Name: 运维/测试,Type: line,Stack: 总量,Data: []int{67, 45, 32, 40, 27, 11, 59},},},
}var response Response{200,获取数据成功,dataItem,
}// GET请求 http://127.0.0.1:8181/api/data/dataview
func DataView(ctx *gin.Context) {ctx.JSON(http.StatusOK, response)
}
