Java SpringBoot的自定义配置

一，一个类多个属性的情况

1. application.properties配置文件写法

my.config.ip=127.0.0.1
my.config.port=8080

2. 自定义配置类：MyTestConfig

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;


@Configuration
@ConfigurationProperties(prefix = "my.config", ignoreUnknownFields = false)
public class MyTestConfig {
    public static final Logger log = LoggerFactory.getLogger(MyTestConfig.class);
    private String ip;
    private int port;

    public String getIp() {
        return ip;
    }

    public int getPort() {
        return port;
    }


    public void setIp(String ip) {
        this.ip = ip;
        log.info("【配置管理】配置ip：" + ip);
    }


    public void setPort(int port) {
        this.port = port;
        log.info("【配置管理】配置端口：" + port);
    }
}

二，一个类多个属性，驼峰字段名

1. application.properties配置文件写法

#线程池参数：核心线程数
my.config.threadpool.core-pool-size=5
#线程池参数：最大线程数数
my.config.threadpool.max-poll-size=5
#线程池参数：阻塞的队列大小，-1代表没有限制，也就是int的最大值
my.config.threadpool.queue-size=-1
#核心线程之外的空闲线程   的存活时间(单位，秒)
my.config.threadpool.keep-alive-time=0

2. 自定义配置类：MyThreadPoolConfig

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;

import java.util.List;



@Configuration
@ConfigurationProperties(
        prefix = "my.config.threadpool",
        ignoreUnknownFields = false
)
public class MyThreadPoolConfig {
    public static final Logger log = LoggerFactory.getLogger(MyThreadPoolConfig.class);
    private int corePoolSize = 10;// 线程池的核心线程数量
    private int maxPollSize = 10;//最大的线程数量
    private int queueSize = -1;//阻塞的队列大小
    private long keepAliveTime = 0L;//线程空闲时间
   

  public void setCorePoolSize(int corePoolSize) {
        this.corePoolSize = corePoolSize;
        log.info("【配置管理】线程池的核心线程数量：" + corePoolSize + "个线程");
    }

    public void setMaxPollSize(int maxPollSize) {
        this.maxPollSize = maxPollSize;
        log.info("【配置管理】最大的线程数量：" + maxPollSize + "个线程");
    }

    public void setQueueSize(int queueSize) {
        this.queueSize = queueSize;
        log.info("【配置管理】阻塞的队列大小：" + (queueSize > 0 ? corePoolSize + "个" : "不限制"));
    }

    public void setKeepAliveTime(long keepAliveTime) {
        this.keepAliveTime = keepAliveTime;
        log.info("【配置管理】线程空闲时间(单位，秒)：" + (keepAliveTime > 0 ? keepAliveTime + "秒" : "不限制"));
    }

   

}

三，需要配置成List集合的情况

1. application.properties配置文件写法

my.config.test.item[0]=test_1

2. 自定义配置类：MyTestConfig

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;

import java.util.List;



@Configuration
@ConfigurationProperties(
        prefix = "my.config.test",
        ignoreUnknownFields = false
)
public class MyTestConfig {
    public static final Logger log = LoggerFactory.getLogger(MyTestConfig.class);
    private List<String> item;


    public void setItem(List<String> item) {
        this.item = item;
        for (String str : item) {
            log.info("【配置管理】新增一个子项：" + str);
        }
    }

}

四，需要配置成List<自定义类>集合的情况

1. application.properties配置文件写法

my.config.test.item[0].name=zhangsan
my.config.test.item[0].age=25

my.config.test.item[1].name=lisi
my.config.test.item[1].age=26

2. 实体类：MyPeople

   public class MyPeople {
  
        private String name;
        private int age;
       

     
        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

       
        public int getAge() {
            return age;
        }

        public void setAge(int age) {
            this.age= age;
        }

        
    
}

3. 自定义配置类：MyTestConfig

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;

import java.util.List;



@Configuration
@ConfigurationProperties(
        prefix = "my.config.test",
        ignoreUnknownFields = false
)
public class MyTestConfig {
    public static final Logger log = LoggerFactory.getLogger(MyTestConfig.class);
    private List<MyPeople> item;

    public List<MyPeople> getItem() {
        return item;
    }

    public void setItem(List<MyPeople> item) {
        this.item = item;
        for (MyPeople people : item) {
            log.info("people : " + people.getName() + " " + people.getAge());
           
        }
    }

}