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);