How to Build a Real‑Time Data Visualization Dashboard with Echarts and Java

With the rise of data‑visualization big screens, many enterprises want to create their own impressive cockpit.

1. Effect Diagram Display

1. Dynamic real‑time data effect diagram

2. Right‑click to switch theme

2. Determine Requirement Plan

1. Determine screen LED resolution

Based on a 16:9 aspect ratio, full‑screen display with F11.

2. Deployment method

Uses a portable executable that runs on Windows, Linux, and macOS; simply copy the program to a server without additional dependencies.

Viewing method: can view the program interface directly on the server or open it remotely in a browser such as Chrome or 360.

3. Overall Architecture Design

Front‑end built with the open‑source Echarts library, edited in WebStorm.

Back‑end implemented with Java Web, edited in IntelliJ IDEA.

Data transmission format: JSON.

Data source: currently JSON files; adding MyBatis enables PostgreSQL, MySQL, Oracle, SQL Server, SQLite; adding POI supports Excel; HTTP API can also be customized.

Data update: HTTP GET polling; real‑time push can be used by monitoring back‑end data.

4. Development Configuration & Code Structure Explanation

1. Java development environment configuration

Then click GENERATE and download the package.

2. JSON library configuration

Use Alibaba's FastJSON library; add the following dependency to pom.xml:

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.51</version>
</dependency>

3. Code structure explanation

a. Static path

b. Java directory

c. Port configuration

4. Startup command

5. Browser view

Enter the URL in a browser (port is the server.port value in application.properties) e.g., http://localhost:80xx.