springboot - 配置文件

springboot配置文件方式1：properties【application.properties是系统配置文件，自定义文件用法类似】

• 默认配置文件 application.properties，一般放置系统配置
• 放置的目录
  • 当前项目根目录下的 config 目录下
  • 当前项目的根目录下
  • resources 目录下的 config 目录下
  • resources 目录
• 四个配置文件的优先级一次降低，这四个位置是默认位置，既Spring Boot启动，默认会从这四个位置按顺序去查找相关属性并加载。

 

• 系统配置文件的使用

 

•  代码

package com.gongxy.demo.config;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;

/*
 * prefix 里面不能用驼峰写法
 */
@Component
@PropertySource("classpath:application.properties")
@ConfigurationProperties(prefix = "setting")
public class StudyConfig {
    private String companyNode;

    public String getCompanyNode() {
        return companyNode;
    }

    public void setCompanyNode(String companyNode) {
        this.companyNode = companyNode;
    }
}

 

 

springboot配置文件方式2：yaml

• yaml文件

 

 

• 数组注入

my:
  servers:
    - dev.example.com
    - another.example.com

• 绑定

package com.gongxy.demo.config;

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

import java.util.List;

@Component
@ConfigurationProperties(prefix = "my")
public class YamlConfig {
    private List<String> servers;

    public List<String> getServers() {
        return servers;
    }

    public void setServers(List<String> servers) {
        this.servers = servers;
    }
}

• 储存对象

redis:
  redisConfigs:
    - host: 192.168.66.128
      port: 6379
    - host: 192.168.66.129
      port: 6380

• 绑定

package com.gongxy.demo.config;

public class SingleRedisConfig {
    private String host;
    private Integer port;

    public String getHost() {
        return host;
    }

    public void setHost(String host) {
        this.host = host;
    }

    public Integer getPort() {
        return port;
    }

    public void setPort(Integer port) {
        this.port = port;
    }

    @Override
    public String toString() {
        return "SingleRedisConfig{" +
                "host='" + host + '\'' +
                ", port=" + port +
                '}';
    }
}

　　

package com.gongxy.demo.config;

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

import java.util.List;

@Component
@ConfigurationProperties(prefix = "redis")
public class RedisConfig {
    public List<SingleRedisConfig> getRedisConfigs() {
        return redisConfigs;
    }

    public void setRedisConfigs(List<SingleRedisConfig> redisConfigs) {
        this.redisConfigs = redisConfigs;
    }

    private List<SingleRedisConfig> redisConfigs;
}

　　

 错误1：Spring Boot Configuration Annotation Processor not configured 问题解决

 

 

•  问题解决方案，在pom.xml文件中引入依赖，问题即可解决

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-configuration-processor</artifactId>
</dependency>

 

• 问题分析：它的意思是“Spring Boot配置注解执行器没有配置”