SpringBoot实战学习（十） Spring Boot类型安全配置

1.目录结构

2.编写

1.application.properties 添加配置

author.name=wen
author.age=24

2.类型安全的Bean

package com.wen.springBoot.config;

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

@Component
//加载properties文件内的配置，通过prefix属性指定properties的配置的前缀
@ConfigurationProperties(prefix="author")
public class AuthorSettings {

    private String name;
    private Long age;

    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public Long getAge() {
        return age;
    }
    public void setAge(Long age) {
        this.age = age;
    }



}

3.入口类

package com.wen.springBoot;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.wen.springBoot.config.AuthorSettings;

@RestController
//Spring Boot项目核心注解，开启自动配置
//组合了@Configuration、@EnableAutoConfiguration、@ComponentScan
//@EnableAutoConfiguration让Spring Boot根据类路径jar包依赖为当前项目进行自动配置
//Spring Boot会自动扫描@SpringBootApplication所在类的同级包及下级包的Bean
@SpringBootApplication
public class DemoApplication {

    //直接注入配置
    @Autowired
    private AuthorSettings authorSettings;

    @RequestMapping("/")
    String index(){
        return "authorName:"+authorSettings.getName()+" authorAge:"+authorSettings.getName();
    }

    public static void main(String[] args) {//main方法，项目启动入口
        SpringApplication.run(DemoApplication.class, args);
    }
}

3.运行

入口类→右键→Run As→Java Application 待项目部署， 访问http://localhost:8080