springboot 配置文件

最新推荐文章于 2020-08-03 16:58:02 发布

转载最新推荐文章于 2020-08-03 16:58:02 发布 · 160 阅读

springboot 专栏收录该内容

6 篇文章

订阅专栏

本文详细介绍了一个基于SpringBoot框架的应用启动过程与配置方法，包括使用@SpringBootApplication注解自动配置，通过@ComponentScan扫描组件，以及如何从application.properties和自定义配置文件中读取属性。展示了两种读取配置文件的方法：使用@Value注解直接读取和通过JavaBean方式使用@ConfigurationProperties注解读取。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

package com.kelly.controller;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableAutoConfiguration //自动加载配置信息
@ComponentScan("com.kelly")//使包路径下带有注解的类可以使用@Autowired自动注入
public class StartApplication {
    public static void main(String[] args) {
        SpringApplication.run(StartApplication.class, args);
    }
}

配置文件application.properties及自定义配置文件define.properties

　　application.properties

#访问的根路径
server.context-path=/springboot
#端口号
server.port=8081
#session失效时间
server.session-timeout=30
#编码
server.tomcat.uri-encoding=utf-8

test.name=kelly
test.password=admin123

define.properties

defineTest.pname=test
defineTest.password=test123

package com.kelly.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;


@Controller
public class FirstController {
    
    @Value("${test.name}")
    private String name;
    
    @Value("${test.password}")
    private String password;
    
    @RequestMapping("/")
    @ResponseBody
    String home()
    {
        return "Hello Springboot!";
    }
    
    @RequestMapping("/hello")
    @ResponseBody
    String hello()
    {
        return "name: " + name + ", " + "password: " + password;
    }
}

使用java bean的方式读取自定义配置文件 define.properties

　　DefineEntity.java

package com.kelly.entity;

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

@Component
@ConfigurationProperties(prefix="defineTest")
@PropertySource("classpath:define.properties")
public class DefineEntity {
    
    private String pname;
    
    private String password;

    public String getPname() {
        return pname;
    }

    public void setPname(String pname) {
        this.pname = pname;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
    
    
}

package com.kelly.controller;

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;

import com.kelly.entity.DefineEntity;

@Controller
public class SecondController {
    
    @Autowired
    DefineEntity defineEntity;
    
    @RequestMapping("/define")
    @ResponseBody
    String define()
    {
        return "test.name:" + defineEntity.getPname() + ", test.password:" + defineEntity.getPassword();
    }
}

https://www.cnblogs.com/kellyJAVA/p/8030395.html