springboot第十二节 springboot读取自己的配置文件_spring boot 读取配置节-优快云博客

本文链接：https://blog.youkuaiyun.com/bluewelkin/article/details/98481718

本文介绍如何在SpringBoot项目中使用YAML配置文件，通过两种方式读取配置信息：一是直接在Controller中使用@Value注解读取，二是通过@ConfigurationProperties注解将配置映射到JavaBean中。

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一、这样读取

package com.forezp.web;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * Created by fangzhipeng on 2017/4/18.
 */
@RestController
public class MiyaController {

    @Value("${my.name}")
    private String name;
    @Value("${my.age}")
    private int age;

    @RequestMapping(value = "/miya")
    public String miya(){
        return name+":"+age;
    }

}

二、application.yml

my:
 name: dg
 age: 124
 number:  ${random.int}
 uuid : ${random.uuid}
 max: ${random.int(10)}
 value: ${random.value}
 greeting: welcome，取值来这里。


spring:
  profiles:
    active: dev

--------------------------

方式二：到javabean中去读取

1、配置文件

package com.forezp.bean;

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

/**
 * Created by fangzhipeng on 2017/4/18.
 */
@ConfigurationProperties(prefix = "my") /*这里对应配置文件里面的标签my，可以读取那里面的内容*/
@Component
public class ConfigBean {

    private String name;
    private int age;
    private int number;
    private String uuid;
    private int max;
    private String value;
    private String greeting;

    public String getName() {
        return name;
    }

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

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public int getNumber() {
        return number;
    }

    public void setNumber(int number) {
        this.number = number;
    }

    public String getUuid() {
        return uuid;
    }

    public void setUuid(String uuid) {
        this.uuid = uuid;
    }

    public int getMax() {
        return max;
    }

    public void setMax(int max) {
        this.max = max;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }

    public String getGreeting() {
        return greeting;
    }

    public void setGreeting(String greeting) {
        this.greeting = greeting;
    }
}

2、

package com.forezp.web;

import com.forezp.bean.ConfigBean;
import com.forezp.bean.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * Created by fangzhipeng on 2017/4/18.
 */
@RestController
@EnableConfigurationProperties({ConfigBean.class,User.class})
public class LucyController {
    @Autowired
    ConfigBean configBean;

    @RequestMapping(value = "/lucy")
    public String miya(){
        return configBean.getGreeting()+" >>>>"+configBean.getName()+" >>>>"+ configBean.getAge()+" >>>>"+configBean.getMax();
    }
/*   访问控制加了这个 @EnableConfigurationProperties({ConfigBean.class,User.class})*/

    @Autowired
    User user;
    @RequestMapping(value = "/user")
    public String user(){
        return user.getName()+user.getAge();
    }

}

代码示例：https://gitee.com/dgx555/springboot.git