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SpringBoot详细讲解yaml配置文件的用法

发布时间:2022-6-27 11:18 作者:鸣鼓ming

1.基本语法

2.数据类型

1.字面量:单个的、不可再分的值。date、boolean、string、number、null

k: v

2.对象:键值对的集合。map、hash、set、object

#行内写法:  

k: {k1:v1,k2:v2,k3:v3}

#或

k: 
  k1: v1
  k2: v2
  k3: v3

3.数组:一组按次序排列的值。array、list、queue

#行内写法:  

k: [v1,v2,v3]

#或者

k:
 - v1
 - v2
 - v3

3.代码测试

User

package com.limi.springboottest2.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
    private String userName;
    private Integer age;
    private String gender;
}

Entity1

package com.limi.springboottest2.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
import java.util.List;
import java.util.Map;
@ConfigurationProperties(prefix = "entity1")
@Data
@AllArgsConstructor
@NoArgsConstructor
@Component
public class Entity1 {
    private Double number;
    private List<String> array;
    private User user;
    private Map<String, Integer> map;
    private String str0;
    private String str1;
    private String str2;
}

application.yml

entity1:
  number: 11
  array: ["apple", "peach", "orange"]
  user: {userName: "lily", }
  map: {"Math": 100,"English": 98,"Art": 8}
#对比字符串变量不使用引号、使用单引号、双引号的区别
  str0: \n 666
  str1: '\n 666'
  str2: "\n 666"

HelloController

package com.limi.springboottest2.controller;
import com.limi.springboottest2.entity.Entity1;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class HelloController {
    @Autowired
    private Entity1 entity1;
    @GetMapping("/test1")
    @ResponseBody
    void test1() {
        System.out.println(entity1);
    }
}

测试结果

可以看到

4.开启补全提示

就是下图的效果

自定义的类和配置文件绑定一般没有提示。若要提示,添加如下依赖:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-configuration-processor</artifactId>
    <optional>true</optional>
</dependency>
<!-- 下面插件作用是工程打包时,不将spring-boot-configuration-processor打进包内,让其只在编码的时候有用 -->
<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <excludes>
                    <exclude>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-configuration-processor</artifactId>
                    </exclude>
                </excludes>
            </configuration>
        </plugin>
    </plugins>
</build>

到此这篇关于SpringBoot详细讲解yaml配置文件的用法的文章就介绍到这了,更多相关SpringBoot yaml配置文件内容请搜索猪先飞以前的文章或继续浏览下面的相关文章希望大家以后多多支持猪先飞!

原文出处:https://blog.csdn.net/qq_41865229/article/details/125220195

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