Java
javaTutorial
How to use ECharts and Java interface to implement timeline-based statistical analysis
How to use ECharts and Java interface to implement timeline-based statistical analysis
How to use ECharts and Java interfaces to implement timeline-based statistical analysis
Abstract: With the popularity of data analysis, timeline-based statistical analysis has become a Powerful tool. This article introduces how to use ECharts and Java interfaces to implement timeline-based statistical analysis, and provides specific code examples.
Keywords: ECharts, Java interface, timeline, statistical analysis
Introduction: With the rapid development of the Internet, a large amount of data is generated and stored in the database. How to obtain valuable information from these data has become an important task. Timeline-based statistical analysis is a powerful data analysis tool. This article will introduce how to use ECharts and Java interfaces to implement timeline-based statistical analysis, and provide specific code examples.
1. Background introduction
ECharts is an open source visualization library based on JavaScript. It provides powerful visual chart functions, allowing developers to easily create various statistical charts, and supports Dynamically update data. The Java interface is a technology used to interact with the database. It can easily obtain data from the database and pass the data to the front-end ECharts library for visual processing.
2. Implementation steps
- Create database:
First you need to create a database and create corresponding tables in the database to store the required statistics The data. The table needs to include time fields and statistical data fields.
- Write Java interface:
In Java code, we need to write an interface to get data from the database and pass the data to the front-end ECharts library for processing . The specific code is as follows:
import java.sql.*;
import com.alibaba.fastjson.JSONObject;
public class DataAPI {
public static String getData() {
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
JSONObject data = new JSONObject();
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost/database", "username", "password");
stmt = conn.createStatement();
rs = stmt.executeQuery("SELECT time, count FROM table");
while (rs.next()) {
String time = rs.getString("time");
int count = rs.getInt("count");
data.put(time, count);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (rs != null) {
rs.close();
}
if (stmt != null) {
stmt.close();
}
if (conn != null) {
conn.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
return data.toJSONString();
}
}- Front-end page:
In the HTML file, we need to introduce the ECharts library file and request the Java interface to obtain data through Ajax , and then use the ECharts library to generate a timeline statistical chart. The specific code is as follows:
<html>
<head>
<title>基于时间轴的统计分析</title>
<script src="https://cdn.jsdelivr.net/npm/echarts@5.2.2/dist/echarts.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
</head>
<body>
<div id="chart" style="width: 600px; height: 400px"></div>
<script>
axios.get('/getData').then(function(response) {
var data = response.data;
var chart = echarts.init(document.getElementById('chart'));
var option = {
xAxis: {
type: 'category',
data: Object.keys(data)
},
yAxis: {
type: 'value'
},
series: [{
data: Object.values(data),
type: 'line'
}]
};
chart.setOption(option);
});
</script>
</body>
</html>- Configure the Java interface:
In order for the front-end page to access the Java interface normally, we need to configure a route to forward the request to Methods of Java interfaces. The specific configuration file is as follows:
<servlet>
<servlet-name>DataServlet</servlet-name>
<servlet-class>com.example.DataServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DataServlet</servlet-name>
<url-pattern>/getData</url-pattern>
</servlet-mapping>3. Summary
Through the introduction of this article, we have learned how to use ECharts and Java interfaces to implement timeline-based statistical analysis, and provided specific code example. This method can easily obtain data from the database and generate timeline statistical charts through the ECharts library to facilitate data analysis and display. I hope this article is helpful to you, thank you for reading!
The above is the detailed content of How to use ECharts and Java interface to implement timeline-based statistical analysis. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1393
52
1205
24
Perfect Number in Java
Aug 30, 2024 pm 04:28 PM
Guide to Perfect Number in Java. Here we discuss the Definition, How to check Perfect number in Java?, examples with code implementation.
Weka in Java
Aug 30, 2024 pm 04:28 PM
Guide to Weka in Java. Here we discuss the Introduction, how to use weka java, the type of platform, and advantages with examples.
Smith Number in Java
Aug 30, 2024 pm 04:28 PM
Guide to Smith Number in Java. Here we discuss the Definition, How to check smith number in Java? example with code implementation.
Java Spring Interview Questions
Aug 30, 2024 pm 04:29 PM
In this article, we have kept the most asked Java Spring Interview Questions with their detailed answers. So that you can crack the interview.
Break or return from Java 8 stream forEach?
Feb 07, 2025 pm 12:09 PM
Java 8 introduces the Stream API, providing a powerful and expressive way to process data collections. However, a common question when using Stream is: How to break or return from a forEach operation? Traditional loops allow for early interruption or return, but Stream's forEach method does not directly support this method. This article will explain the reasons and explore alternative methods for implementing premature termination in Stream processing systems. Further reading: Java Stream API improvements Understand Stream forEach The forEach method is a terminal operation that performs one operation on each element in the Stream. Its design intention is
TimeStamp to Date in Java
Aug 30, 2024 pm 04:28 PM
Guide to TimeStamp to Date in Java. Here we also discuss the introduction and how to convert timestamp to date in java along with examples.
Java Program to Find the Volume of Capsule
Feb 07, 2025 am 11:37 AM
Capsules are three-dimensional geometric figures, composed of a cylinder and a hemisphere at both ends. The volume of the capsule can be calculated by adding the volume of the cylinder and the volume of the hemisphere at both ends. This tutorial will discuss how to calculate the volume of a given capsule in Java using different methods. Capsule volume formula The formula for capsule volume is as follows: Capsule volume = Cylindrical volume Volume Two hemisphere volume in, r: The radius of the hemisphere. h: The height of the cylinder (excluding the hemisphere). Example 1 enter Radius = 5 units Height = 10 units Output Volume = 1570.8 cubic units explain Calculate volume using formula: Volume = π × r2 × h (4
Create the Future: Java Programming for Absolute Beginners
Oct 13, 2024 pm 01:32 PM
Java is a popular programming language that can be learned by both beginners and experienced developers. This tutorial starts with basic concepts and progresses through advanced topics. After installing the Java Development Kit, you can practice programming by creating a simple "Hello, World!" program. After you understand the code, use the command prompt to compile and run the program, and "Hello, World!" will be output on the console. Learning Java starts your programming journey, and as your mastery deepens, you can create more complex applications.
