我要评论在使用spring boot的时候，通常需要自定义一些属性，可以按如下方式直接定义。在src/main/resources/application.properties配置文件中加入：
server.port=8089 com.av.book.name = my spring boot com.av.book.author = av
然后通过@value("${属性名}")注解来加载对应的配置属性，具体代码如下：
package com.shrimpking;
import lombok.data;
import org.springframework.beans.factory.annotation.value;
import org.springframework.stereotype.component;
/**
* created by intellij idea.
*
* @author : shrimpking
* @create 2024/1/13 20:35
*/
@component
@data
public class bookproperties
{
@value("${com.av.book.name}")
private string bookname;
@value("${com.av.book.author}")
private string author;
}最后，通过单元测试验证bookproperties属性是否已经根据配置文件加载配置：
package com.shrimpking;
import org.junit.test;
import org.junit.runner.runwith;
import org.springframework.beans.factory.annotation.autowired;
import org.springframework.boot.test.context.springboottest;
import org.springframework.test.context.junit4.springrunner;
import javax.annotation.resource;
/**
* created by intellij idea.
*
* @author : shrimpking
* @create 2024/1/13 20:37
*/
@springboottest
@runwith(springrunner.class)
public class mytest
{
@resource
private bookproperties bookproperties;
@test
public void test(){
system.out.println("book name:" + bookproperties.getbookname());
system.out.println("book author:" + bookproperties.getauthor());
}
}不过我们并不推荐使用这种方式，下面给出更优雅的实现方式。首先引入spring boot提供的配置依赖：
<dependency>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-configuration-processor</artifactid>
<optional>true</optional>
</dependency><?xml version="1.0" encoding="utf-8"?>
<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
xsi:schemalocation="http://maven.apache.org/pom/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelversion>4.0.0</modelversion>
<parent>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-starter-parent</artifactid>
<version>2.1.6.release</version>
<relativepath/> <!-- lookup parent from repository -->
</parent>
<groupid>com.shrimpking</groupid>
<artifactid>demo9</artifactid>
<version>0.0.1-snapshot</version>
<name>demo9</name>
<description>demo project for spring boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-starter-web</artifactid>
</dependency>
<dependency>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-configuration-processor</artifactid>
<optional>true</optional>
</dependency>
<dependency>
<groupid>org.projectlombok</groupid>
<artifactid>lombok</artifactid>
<optional>true</optional>
</dependency>
<dependency>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-starter-test</artifactid>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupid>org.springframework.boot</groupid>
<artifactid>spring-boot-maven-plugin</artifactid>
<configuration>
<excludes>
<exclude>
<groupid>org.projectlombok</groupid>
<artifactid>lombok</artifactid>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>使用@configurationproperties注解进行编码，修改bookproperties为：
package com.shrimpking;
import lombok.data;
import org.springframework.boot.context.properties.configurationproperties;
/**
* created by intellij idea.
*
* @author : shrimpking
* @create 2024/1/13 20:39
*/
@data
@configurationproperties(prefix = "com.av.book")
public class otherproperties
{
private string name;
private string author;
}@configurationproperties(prefix="com.av.book")：在application.properties配置的属性前缀。在类中的属性就不用使用@value进行注入了。
package com.shrimpking;
import org.springframework.boot.springapplication;
import org.springframework.boot.autoconfigure.springbootapplication;
import org.springframework.boot.context.properties.enableconfigurationproperties;
@springbootapplication
@enableconfigurationproperties({otherproperties.class})
public class demo9application
{
public static void main(string[] args)
{
springapplication.run(demo9application.class, args);
}
}最后，在启动类中添加@enableconfigurationproperties({otherproperties.class})。
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