框架 Spring Boot 技术入门到整合 5-1 Springboot 类读取配置文件

0　　　　课程地址

https://www.imooc.com/video/16718/0

1　　　　读取配置文件demo

1.1　　引入依赖

<!-- 加载配置文件，引入依赖 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>

1.2　　添加配置文件

resource.properties

com.imooc.openresource.name=imooc
com.imooc.openresource.website=www.imooc.com
com.imooc.openresource.language=java

1.3　　添加实体类bean

package com.example.demo.bean;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;

/**
 * Resource
 *
 * @author 魏豆豆
 * @date 2020/11/21
 */
@Configuration//会引入资源文件
@PropertySource(value="classpath:resource.properties")//引入资源文件的地址
@ConfigurationProperties(prefix = "com.imooc.openresource")//前缀
public class Resource {
    private String name;
    private String website;
    private String language;

    public String getName() {
        return name;
    }

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

    public String getWebsite() {
        return website;
    }

    public void setWebsite(String website) {
        this.website = website;
    }

    public String getLanguage() {
        return language;
    }

    public void setLanguage(String language) {
        this.language = language;
    }
}

1.4　　Controller类调用

package com.example.demo.son.democ;

import com.example.demo.bean.Resource;
import com.example.demo.tools.JSONResult;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * ResourceController
 *
 * @author 魏豆豆
 * @date 2020/11/21
 */
@RestController
public class ResourceController {
    @Autowired//自动装配，通过该注解可以消除get和set方法
    private Resource resource;


    @RequestMapping("/getResource")
    public JSONResult getResourceController(){
        Resource bean = new Resource();
        BeanUtils.copyProperties(resource,bean);
        return JSONResult.ok(bean);
    }
}

1.5　　打印

2　　　　常用注解

@Configuration//会引入资源文件
@PropertySource(value="classpath:resource.properties")//引入资源文件的地址
@ConfigurationProperties(prefix = "com.imooc.openresource")//前缀
@Autowired//自动装配，通过该注解可以消除get和set方法