笔记目录：
目录
一、使用ECharts可视化框架
1、基本使用
2、静态测试
1）将下载下来的文件echarts.min.js放在js文件夹下
2）在webapp下创建test.html
test.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>ECharts USE</title>
<!-- 引入 ECharts 文件 -->
<script src="js/echarts.min.js"></script>
</head>
<body>
<!-- 为 ECharts 准备一个具备大小（宽高）的 DOM -->
<div id="main" style="width: 600px;height:400px;"></div>
<script type="text/javascript">
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById('main'));
// 指定图表的配置项和数据
var option = {
title: {
text: '某站点用户访问来源',
subtext: '纯属虚构',
x: 'center'
},
tooltip: {
trigger: 'item',
formatter: "{a} <br/>{b} : {c} ({d}%)"
},
legend: {
orient: 'vertical',
left: 'left',
data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎']
},
series: [
{
name: '访问来源',
type: 'pie',
radius: '55%',
center: ['50%', '60%'],
data: [
{value: 335, name: '直接访问'},
{value: 310, name: '邮件营销'},
{value: 234, name: '联盟广告'},
{value: 135, name: '视频广告'},
{value: 1548, name: '搜索引擎'}
],
itemStyle: {
emphasis: {
shadowBlur: 10,
shadowOffsetX: 0,
shadowColor: 'rgba(0, 0, 0, 0.5)'
}
}
}
]
};
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
</script>
</body>
</html>结果：
3、创建工程，添加依赖，编写代码
pom.xml
<!-- 添加依赖 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jsp-api</artifactId>
<version>2.0</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<dependency>
<groupId>net.sf.json-lib</groupId>
<artifactId>json-lib</artifactId>
<version>2.4</version>
<classifier>jdk15</classifier>
</dependency>VideoAccessTopN.java
package com.lihaogn.domain;
public class VideoAccessTopN {
private String name;
private long value;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public long getValue() {
return value;
}
public void setValue(long value) {
this.value = value;
}
}
MySQLUtils.java
package com.lihaogn.utils;
import java.sql.*;
/**
* MySQL工具类
*/
public class MySQLUtils {
private static final String USERNAME = "root";
private static final String PASSWORD = "rootroot";
private static final String DRIVERCLASS = "com.mysql.jdbc.Driver";
private static final String URL = "jdbc:mysql://localhost:3306/sparkSql_project";
/**
* 获取数据库连接
*/
public static Connection getConnection() {
Connection connection=null;
try {
Class.forName(DRIVERCLASS);
connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
} catch (Exception e) {
e.printStackTrace();
}
return connection;
}
/**
* 释放资源
*/
public static void release(Connection connection, PreparedStatement pstmt, ResultSet rs) {
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if (pstmt != null) {
try {
pstmt.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if (connection != null) {
try {
connection.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) {
System.out.println(getConnection());
}
}
VideoAccessTopNDAO.java
package com.lihaogn.dao;
import com.lihaogn.domain.VideoAccessTopN;
import com.lihaogn.utils.MySQLUtils;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class VideoAccessTopNDAO {
static Map<String, String> courses = new HashMap<String, String>();
static {
courses.put("2402", "Mysql");
courses.put("1309", "php");
courses.put("3078", "Java 网络通信");
courses.put("2801", "Mysql 优化");
courses.put("1336", "scala");
courses.put("3369", "Java 基础");
}
/**
* 根据课程编号查询课程名称
*/
public String getCourseName(String id) {
return courses.get(id);
}
/**
* 根据day查询当天的最受欢迎的topN课程
*/
public List<VideoAccessTopN> query(String day) {
List<VideoAccessTopN> list = new ArrayList<VideoAccessTopN>();
Connection connection = null;
PreparedStatement psmt = null;
ResultSet rs = null;
try {
connection = MySQLUtils.getConnection();
String sql = "select class_id,times from day_vedio_access_topn_stat where day=? order by times desc limit 5";
psmt = connection.prepareStatement(sql);
psmt.setString(1, day);
rs = psmt.executeQuery();
VideoAccessTopN domain = null;
while (rs.next()) {
domain = new VideoAccessTopN();
domain.setName(getCourseName(rs.getLong("class_id") + ""));
domain.setValue(rs.getLong("times"));
list.add(domain);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
MySQLUtils.release(connection, psmt, rs);
}
return list;
}
public static void main(String[] args) {
VideoAccessTopNDAO dao = new VideoAccessTopNDAO();
List<VideoAccessTopN> list = dao.query("20161110");
for (VideoAccessTopN result : list) {
System.out.println(result.getName() + "," + result.getValue());
}
}
}
VideoAccessTopNServlet.java
package com.lihaogn.web;
import com.lihaogn.dao.VideoAccessTopNDAO;
import com.lihaogn.domain.VideoAccessTopN;
import net.sf.json.JSONArray;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
/**
* 最受欢迎的topN课程
*/
public class VideoAccessTopNServlet extends HttpServlet{
private VideoAccessTopNDAO dao;
@Override
public void init() throws ServletException {
dao=new VideoAccessTopNDAO();
}
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
String day = req.getParameter("day");
List<VideoAccessTopN> results = dao.query(day);
JSONArray json = JSONArray.fromObject(results);
resp.setContentType("text/html;charset=utf-8");
PrintWriter writer=resp.getWriter();
writer.println(json);
writer.flush();
writer.close();
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
super.doPost(req, resp);
}
}
4、前端代码
在js文件夹下放入文件jquery.js
topn.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>ECharts USE</title>
<!-- 引入 ECharts 文件 -->
<script src="js/echarts.min.js"></script>
<script src="js/jquery.js"></script>
</head>
<body>
<!-- 为 ECharts 准备一个具备大小（宽高）的 DOM -->
<div id="main" style="width: 600px;height:400px;"></div>
<script type="text/javascript">
// 基于准备好的dom，初始化echarts实例
var myChart = echarts.init(document.getElementById('main'));
// 指定图表的配置项和数据
var option = {
title: {
text: '最受欢迎的top5课程',
x: 'center'
},
tooltip: {
trigger: 'item',
formatter: "{a} <br/>{b} : {c} ({d}%)"
},
legend: {
orient: 'vertical',
left: 'left',
},
series: [
{
name: '访问次数',
type: 'pie',
radius: '55%',
center: ['50%', '60%'],
data: (function () {
var courses = [];
$.ajax({
type: "GET",
url: "/stat?day=20161110",
dataType: 'json',
async: false,
success: function (result) {
for (var i = 0; i < result.length; i++) {
courses.push({"value": result[i].value, "name": result[i].name});
}
}
})
return courses;
})(),
itemStyle: {
emphasis: {
shadowBlur: 10,
shadowOffsetX: 0,
shadowColor: 'rgba(0, 0, 0, 0.5)'
}
}
}
]
};
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
</script>
</body>
</html>5、修改web.xml
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<servlet>
<servlet-name>stat</servlet-name>
<servlet-class>com.lihaogn.web.VideoAccessTopNServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>stat</servlet-name>
<url-pattern>/stat</url-pattern>
</servlet-mapping>
</web-app>
6、结果
二、使用Zeppelin
1、下载，解压，配置环境变量
2、启动
zeppelin/bin/zeppelin-daemon.sh start3、打开web页面并配置使用
// 浏览器输入
localhost:8080
