Spring Boot学习之获取配置文件中的值

Jackey Java 409 次浏览 , 没有评论

 

  1. 创建配置文件:site.properties
    site.name = gopher
    site.url = https://ijackey.com

     

  2. 创建获取配置参数的实体类:SiteConfig.java
    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 + '\'' +
                    '}';
        }
    }
    

     

  3. 测试,创建文件:SiteController.java
    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();
        }
    }
    

     

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