Spring Boot学习之获取配置文件中的值

site.name = gopher
site.url = https://ijackey.com

package com.example.demo.config;

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

@Component
// 配置参数的前缀
@ConfigurationProperties(prefix = "site")
// 读取指定配置文件
@PropertySource(value = "classpath:site.properties")
public class SiteConfig {
    private String name;
    private String url;

    public String getName() {
        return name;
    }

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

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    @Override
    public String toString() {
        return "SiteConfig{" +
                "name='" + name + '\'' +
                ", url='" + url + '\'' +
                '}';
    }
}

package com.example.demo.controller;

import com.example.demo.config.SiteConfig;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
@RequestMapping("/site")
public class SiteController {

    // @AutoWired会帮助我们的变量与配置文件中的内容进行自动匹配
    @Autowired
    SiteConfig sc;

    @RequestMapping(value = "index")
    @ResponseBody
    public String index() {
        return sc.toString();
    }
}