SpringBoot bean映射yml中的屬性舉例

 

pom:導入配置文件處理器，配置文件進行綁定就會有提示

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring‐boot‐configuration‐processor</artifactId>
            <optional>true</optional>
        </dependency>

 

yml:

user: 
   name: lisa
   postcode: 610424199612112800

 

user.java方式一：使用@ConfigurationProperties注解實現批量對應屬性值

package com.pecool.customer.entity;

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

@Component
@ConfigurationProperties(prefix="user")
public class User {

    private String name;
    private String postcode;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPostcode() {
        return postcode;
    }
    public void setPostcode(String postcode) {
        this.postcode = postcode;
    }
    @Override
    public String toString() {
        return "User [name=" + name + ", postcode=" + postcode + "]";
    }
    
}

 

user.java方式二：在屬性上使用spring 的@Value注解也可以獲取到yml或properties中的值

package com.pecool.customer.entity;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@Component
//@ConfigurationProperties(prefix="user")
public class User {

    @Value("${user.name}")
    private String name;
    
    @Value("${user.postcode}")
    private String postcode;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPostcode() {
        return postcode;
    }
    public void setPostcode(String postcode) {
        this.postcode = postcode;
    }
    @Override
    public String toString() {
        return "User [name=" + name + ", postcode=" + postcode + "]";
    }
    
}

 

 

 

Test.java

package com.pecool;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import com.pecool.customer.entity.User;

@SpringBootTest
@RunWith(SpringRunner.class)
public class TestA {

    @Autowired
    private User user;
    
    @Test
    public void xxx(){
        System.out.println(user);
    }
    
}