Echarts动态加载多条折线图的实现代码

背景：动态加载多条折线图，折线图条数不确定

页面效果：

页面代码

//气象数据
	function serchqx(begintime, endtime, str, parameter) {
		$("#rr").html("");//将循环拼接的字符串插入下拉列表 
		var t = $("#imageparameter").val();
		$
				.ajax({
					type : "post",
					data : {
						"str" : str,
						"begintime" : begintime,
						"endtime" : endtime,
						"parameter" : parameter,
						"t" : t
					},
					url : "${pagecontext.servletcontext.contextpath}/dataanalysis/serch.action",
					success : function(result) {
						var aa = [];
						var tmp=[];
						if (parameter == 1) {
							aa.push('单位（℃）');
							//option.yaxis[0].name = aa;
						} else if (parameter == 2) {
							aa.push('单位（%）');
							//option.yaxis[0].name = aa;
						} else if (parameter == 3) {
							aa.push('单位（kpa）');
							//option.yaxis[0].name = aa;
						} else if (parameter == 4) {
							aa.push('单位（w/㎡）');
							//option.yaxis[0].name = aa;
						} else if (parameter == 5) {
							aa.push('单位（mm）');
							//option.yaxis[0].name = aa;
						} else if (parameter == 6) {
							aa.push('单位（m/s）');
							//option.yaxis[0].name = aa;
						}
						//处理数据
						//将从后台接收的json字符串转换成json对象
						var jsonobj = eval("(" + result + ")");
						//给图标标题赋值
						//option.legend.data = jsonobj.legend;
						//读取横坐标值
						//option.xaxis[0].data = jsonobj.axis;
						var series_arr = jsonobj.series;
						//驱动图表生成的数据内容，数组中每一项代表一个系列的特殊选项及数据
						for (var i = 0; i < series_arr.length; i++) {
							var datas=[];
							for(var j=0;j<series_arr[i].data.length;j++){
								var n=series_arr[i].data[j];
								var time=series_arr[i].time[j];
								var data=[time,n];
								datas.push(data);
							}
							//转换series
							 temp = {
					          name: series_arr[i].name,
					          type: "line",
					          data: datas
					        };
							 tmp.push(temp)
							 //option.series.push(temp);
						}
						mychart.clear();
						//mychart.setoption(option,true);
						mychart.setoption({ //加载数据图表
							color : colors,
							tooltip : {
								trigger : 'axis'
							},
							datazoom : {
								show : true,
								start : 0,
								realtime : true
							},
							legend : {
								data : jsonobj.legend
							},
							grid : {
								top : 70,
								bottom : 50
							},
							 calculable: true,
							xaxis : [ {
								type : 'time',
								boundarygap : [ 0, 100 ],
								axislabel : {
									textstyle : {
										fontsize : "10px"
									}
								}

							}

							],
							yaxis : [ {
								name : aa,
								type : 'value',
							} ],
							series : tmp},true);
					}
				})
	}

后台封装的series

/**
 * 
 */
package com.myhope.domain;

import java.util.list;

/**
 * description：<br/>
 * copyright (c) ， 2017， jansonxu <br/>
 * this program is protected by copyright laws. <br/>
 * program name：series<br/>
 * date：2019年1月14日
 * 
 * @author 
 * @version : 1.0
 */
public class series {
	private string name;
	private string type;
	private list<double> data;
	private list<string> time;
	
	public series(string name, string type, list<double> data, list<string> time) {
		super();
		this.name = name;
		this.type = type;
		this.data = data;
		this.time = time;
	}
	
	public list<string> gettime() {
		return time;
	}

	public void settime(list<string> time) {
		this.time = time;
	}

	public string getname() {
		return name;
	}
	public void setname(string name) {
		this.name = name;
	}
	public string gettype() {
		return type;
	}
	public void settype(string type) {
		this.type = type;
	}
	public list<double> getdata() {
		return data;
	}
	public void setdata(list<double> data) {
		this.data = data;
	}
	public series() {
		super();
	}
	@override
	public string tostring() {
		return "series [name=" + name + ", type=" + type + ", data=" + data + ", time=" + time + "]";
	}

}

后台封装echarts

/**
 * 
 */
package com.myhope.domain;

import java.util.list;

/**
 * description：<br/>
 * copyright (c) ， 2017， jansonxu <br/>
 * this program is protected by copyright laws. <br/>
 * program name：echarts<br/>
 * date：2019年1月14日
 * 
 * @author 
 * @version : 1.0
 */
public class echarts {
	private list<string> legend;//name
	private list<string> axis ;//横坐标
	private list<series> series;//数据项
	private list<dataanalysistable> dataanalysistables;
	
	
	

	public echarts(list<string> legend, list<string> axis, list<series> series,
			list<dataanalysistable> dataanalysistables) {
		super();
		this.legend = legend;
		this.axis = axis;
		this.series = series;
		this.dataanalysistables = dataanalysistables;
	}

	public echarts() {
		super();
	}

	public list<string> getlegend() {
		return legend;
	}
	public void setlegend(list<string> legend) {
		this.legend = legend;
	}
	public list<string> getaxis() {
		return axis;
	}
	public void setaxis(list<string> axis) {
		this.axis = axis;
	}
	public list<series> getseries() {
		return series;
	}
	public void setseries(list<series> series) {
		this.series = series;
	}

	public list<dataanalysistable> getdataanalysistables() {
		return dataanalysistables;
	}

	public void setdataanalysistables(list<dataanalysistable> dataanalysistables) {
		this.dataanalysistables = dataanalysistables;
	}

	@override
	public string tostring() {
		return "echarts [legend=" + legend + ", axis=" + axis + ", series=" + series + ", dataanalysistables="
				+ dataanalysistables + "]";
	}
	
}

action封装

将对应的东西传入页面即可

echarts echarts = new echarts(legend, newaxis, series,);
string jsonstring = com.alibaba.fastjson.jsonobject.tojsonstring(echarts);

初始化echarts文件

var dom = document.getelementbyid("xsl");
var mychart = echarts.init(dom);
mychart.showloading({
	text : "图表数据正在努力加载..."
});
var app = {};
app.title = '多 x 轴示例';

var colors = [ '#5793f3', '#d14a61', '#675bba', "#00ff00", "#ffff00" ];

option = {
	color : colors,
	tooltip : {
		trigger : 'axis'
	},
	datazoom : {
		show : true,
		start : 0,
		realtime : true
	},
	legend : {
		data : []
	},
	grid : {
		top : 70,
		bottom : 50
	},
	 calculable: true,
	xaxis : [ {
		type : 'time',
		boundarygap : [ 0, 100 ],
		axislabel : {
			textstyle : {
				fontsize : "10px"
			}
		}

	}

	],
	yaxis : [ {
		name : [],
		type : 'value',
	} ],
	series : []
};
mychart.clear();
mychart.setoption(option, true);

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。