Spring boot中使用工具类 无需注入获取.yml中的值

首先定义存放公共信息的 .yml 配置文件定义为 application-config.yml 文件如下:

prairieManage:
mapProps:
key1: value1
key2: value2
然后在住配置文件引用新定义的文件：如下：

server:
port: 8080
tomcat:
uri-encoding: UTF-8
spring:
profiles:
active: local,config

import lombok.*;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

import java.util.HashMap;
import java.util.Map;

@Component
@ConfigurationProperties(prefix = "prairieManage")
@Data
@Getter
@Setter
@EqualsAndHashCode
@ToString
@NoArgsConstructor
public class YmlConfig {
    private Map<String,String> mapProps = new HashMap<>();
}

import com.fasterxml.jackson.core.JsonProcessingException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

import java.util.Map;

@Slf4j
public class YmlConfigUtil implements ApplicationContextAware {

    private static ApplicationContext applicationContext = null;

    private static Map<String,String> propertiesMap =null;

    public YmlConfigUtil() {
    }

    public static String getConfigByKey(String key) {
        if (propertiesMap ==null){
            YmlConfig ymlConfig = applicationContext.getBean(YmlConfig.class);
            propertiesMap = ymlConfig.getDatasource();
        }
        return propertiesMap.get(key);
    }

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if(YmlConfigUtil.applicationContext == null){
            YmlConfigUtil.applicationContext  = applicationContext;
        }
    }
}

运用 比如我想获取url的值

配置要注意

 log.info("[username]" + YmlConfigUtil.getConfigByKey("username"));

非常的感谢

https://blog.csdn.net/xiao______xin/article/details/73274830

-------- 官方提供 的env 

import org.springframework.core.env.Environment;