Spring Boot 自定义配置

一、获取自定义配置

appilication.properties 添加

app.name = spring Boot

通过注解@Value获取

@Value("${app.name}")
private String appName;

二、自定义配置映射到对象

application.properties

配置必须有前缀，且前缀是一样的，才能用一个配置类

app.name = spring Boot
app.version = 2.6

 创建配置类文件App .java

package com.example.demo.config;

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

@Component // 将此类给spring容器进行管理
@ConfigurationProperties(prefix = "app")
public class App {
    private String name;
    private double version;

    public String getName() {
        return name;
    }

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

    public double getVersion() {
        return version;
    }

    public double setVersion(Double version) {
        return this.version = version;
    }
}

控制器：

@Autowired
    private App app;

    @RequestMapping(value = "/")
    public @ResponseBody String say() {
        return "Hello " + app.getName() + " " + app.getVersion();
    }