完整流程：
python爬取股票信息-------将信息保存到数据库----------通过ajax发送post请求到java后台-----java后台连接数据库获取到数据库信息-------通过echarts进行展示（柱状图、折线图）
python爬取股票信息就不贴代码了，主要是后面的。
jsp
1、通过ajax发送post请求到后台获取数据进行展示
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://" + request.getServerName()
+ ":" + request.getServerPort() + path + "/";
%>
<!DOCTYPE>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Hello ECharts</title>
<!-- 引入使用的ECharts.JS -->
<script src="echarts.js"></script>
<script src="jquery.min.js"></script>
</head>
<body>
<!--设置展示ECharts图表的区域 -->
<div id="myDiv" style="height: 750px;width:1000px;"></div>
<script type="text/javascript">
function loadData(option) {
$.ajax({
type : 'post', //传输类型
async : false, //同步执行
url : 'bar.do', //web.xml中注册的Servlet的url-pattern
data : {},
dataType : 'json', //返回数据形式为json
success : function(result) {
if (result) {
//初始化xAxis[0]的data
option.xAxis[0].data = [];
for (var i=0; i<result.length; i++) {
option.xAxis[0].data.push(result[i].day);
}
//因为我是进行了3个数据方面进行的展示，所以写了三个,下面的命名请原谅
option.series[0].data = [];
for (var i=0; i<result.length; i++) {
option.series[0].data.push(result[i].kaipan);
//option.series[0].data.push(result[i].shoupan);
}
//初始化series[1]的data
option.series[1].data = [];
for (var i=0; i<result.length; i++) {
option.series[1].data.push(result[i].kaipan);
}
option.series[2].data = [];
for (var i=0; i<result.length; i++) {
option.series[2].data.push(result[i].heightmax);
}
}
},
error : function(errorMsg) {
alert("加载数据失败");
}
});
}
var myChart = echarts.init(document.getElementById('myDiv'));
var option = {
tooltip : {
show : true ,
formatter:'名称:{a}<br>时间:{b}<br>金额:{c}'
},
title:{
text:"股票价格趋势"
},
legend : {
data : [ '开盘','收盘','最高价' ]
},
xAxis : [ {
type : 'category' ,
axisLabel: {
formatter: function (value) {
return echarts.format.formatTime('MM-dd', value);
}
}
} ],
//滑动时间轴
dataZoom: [
{
type: 'slider',
show: true,
start: 94,
end: 100,
handleSize: 8
},
{
type: 'inside',
start: 94,
end: 100
},
{
type: 'slider',
show: true,
yAxisIndex: 0,
filterMode: 'empty',
width: 12,
height: '70%',
handleSize: 8,
showDataShadow: false,
left: '93%'
}
],
yAxis : [ {
type : 'value'
} ],
series : [ {
name : '开盘',
type : 'bar',
markPoint:{
data:[
{type:'max',name:'最大值'},
{type:'min',name:'最小值'}
]
} ,
markLine:{
data:[
{type:'average',name:'平均值',itemStyle:{
normal:{
color:'red'
}
}}
]
}
},{
name:'收盘',
type:'line',
markPoint:{
data:[
{type:'max',name:'最大值'},
{type:'min',name:'最小值'}
]
} ,
markLine:{
data:[
{type:'average',name:'平均值',lineStyle:{
normal:{
color:'black'
}
}}
]
}
},{
name:'最高价',
type:'line',
markPoint:{
data:[
{type:'max',name:'最大值'},
{type:'min',name:'最小值'}
]
} ,
markLine:{
data:[
{type:'average',name:'平均值',lineStyle:{
normal:{
color:'blue'
}
}}
]
}
},
]
};
//加载数据到option
loadData(option);
//设置option
myChart.setOption(option);
</script>
</body>
</html>
2、barCandBean.java
package com.helloBar;public class barCandBean {
private String day;
private String shoupan;
private String kaipan;
private String heightmax;
//private String slowmin;
public String getDay() {
return day;
}
public String getHeightmax() {
return heightmax;
}
public void setHeightmax(String heightmax) {
this.heightmax = heightmax;
}
public String getShoupan() {
return shoupan;
}
public void setShoupan(String shoupan) {
this.shoupan = shoupan;
}
public void setDay(String day) {
this.day = day;
}
public String getKaipan() {
return kaipan;
}
public void setKaipan(String kaipan) {
this.kaipan = kaipan;
}
}
3、BarCandDao.java
package com.helloBar;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
public class barCandDao {
Connection connection;
public Connection getConnection() {
try {
String name = "xxx";//用户名
String password = "xxx";//密码
String url = "jdbc:mysql://127.0.0.1:3306/stockdatabase";//连接stockdatabase数据库
Class.forName("com.mysql.jdbc.Driver");
connection = DriverManager.getConnection(url, name, password);
} catch (Exception e) {
e.printStackTrace();
}
return connection;
}
public void setConnection(Connection connection) {
this.connection = connection;
}
public ArrayList<barCandBean> listAll() {
ArrayList<barCandBean> list = new ArrayList<barCandBean>();
PreparedStatement pstmt = null;
ResultSet rs = null;
try {
pstmt = this.getConnection().prepareStatement("SELECT * FROM stock_600000");rs = pstmt.executeQuery();
while (rs.next()) {
barCandBean bar = new barCandBean();
bar.setKaipan(rs.getString("kaipan"));
bar.setDay(rs.getString("day"));
bar.setHeightmax(rs.getString("heightmax"));
bar.setShoupan(rs.getString("shoupan"));
//bar.setSlowmin(rs.getString("slowmin"));
list.add(bar);
System.out.println("连接数据库成功");
}
} catch (Exception e) {
e.printStackTrace();
//System.out.println("连接失败");
} finally {
try {
connection.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return list;
}
}
4、HelloBarCand.java
public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
//创建了一个barcanddao的对象，barcanddao主要是对数据库的连接和对数据库的操作
barCandDao barcanddao=new barCandDao();
//调用barcanddao的select_all()方法把从数据库中读取所有的数据返回的是一个ArrayList，ArrayList里面放的是一个barBean
ArrayList<barCandBean> array = (ArrayList<barCandBean>) barcanddao.listAll();
System.out.println("s"+array);
//设置返回时的编码格式
response.setContentType("text/html; charset=utf-8");
//调用JSONArray.fromObject方法把array中的对象转化为JSON格式的数组
JSONArray json=JSONArray.fromObject(array);
System.out.println(json.toString());
//返回给前段页面
PrintWriter out = response.getWriter();
out.println(json);
out.flush();
out.close();
}
4.web.xml
<servlet><servlet-name>helloBarCand</servlet-name>
<servlet-class>com.helloBar.helloBarCand</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>helloBarCand</servlet-name>
<url-pattern>/bar.do</url-pattern>
</servlet-mapping>
5、数据库表就不进行贴了
//其中Java代码参考其它博客代码，十分感谢~