The project parameters are made into configurable items, and the @configurationproperties annotation is used

The problem background

In the project , Many parameters need to be configurable , Now and there is nacos Support for , Configurable without restarting , Dynamic changes , Very convenient

ConfigurationProperties Use

1 Import prompt depends

        <!-- Configure the prompt tool of the page -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>

2 Create configurable classes

package com.lanran.config;

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;

/** * @Description: * @Created: IDEA2021 * @author:  Blue dye  * @createTime: 2022-07-23 20:28 **/


// Bind to configuration file , The prefix for lanran.thread
@ConfigurationProperties(prefix = "lanran.thread")
// @Component
@Data
public class ThreadPoolConfigProperties {
    

    private Integer coreSize;

    private Integer maxSize;

    private Integer keepAliveTime;


}

3 application Sample configuration file

# Configure thread pool , Configurable file 
lanran.thread.coreSize=20
lanran.thread.maxSize=200
lanran.thread.keepAliveTime=10

As a programmer 216 An article , Write one line of lyrics at a time and record , Look at how many songs there are in life ,wahahaha …

Lyric： If you dry, you won't be visible