SpringBoot

SpringBoot配置

建议使用yaml文件

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# yaml强制要求k-v之间有空格
name: zhangsan

# 创建实体类
student:
	name: zhangsan
	age: 20

student: {name: zhangsan, age: 20}

# 创建数组
pets:
	- cat
	- dog
	- pig

pets: [cat, dog, pig]

属性赋值

@Value

实体类

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package com.hug.pojo;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component
public class Dog {
    @Value("章帅")
    private String name;
    @Value("3")
    private Integer age;

    public Dog() {
    }

    public Dog(String name, Integer age) {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

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

    public Integer getAge() {
        return age;
    }

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

    @Override
    public String toString() {
        return "Dog{" +
                "name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

测试

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package com.hug;

import com.hug.pojo.Dog;
import com.hug.pojo.Person;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
public class SpringBootApplicationTest {
    @Autowired
    private Dog dog;
    
    @Autowired
    private Person person;
    
    @Test
    public void test01(){
        System.out.println(dog);
        // Dog{name='章帅', age=3}
    }
}

@ConfigurationProperties

@ConfigurationProperties(prefix = “person”) 使用方式，将yaml文件中的定义的类，填充到实体类中

yaml文件内容

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spring:
  jackson:
    date-format: yyyy-MM-dd
  time-zone: GMT+8
  
person:
  name: zhangsan
  age: 3
  happy: false
  brith: 2023/04/10
  maps: {k1: v1, k2: v2}
  lists:
    - code
    - music
    - girl
  dog: 
    name: "章帅"
    age: 3

实体类内容

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package com.hug.pojo;


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

import java.util.Date;
import java.util.List;
import java.util.Map;

@Component
@ConfigurationProperties(prefix = "person")
public class Person {
    private String name;
    private Integer age;
    private Boolean happy;
    private Date brith;
    private Map<Object, Object> maps;
    private List<Object> lists;
    
    private Dog dog;

    public Person() {
    }

    public Person(String name, Integer age, Boolean happy, Date brith, Map<Object, Object> maps, List<Object> lists, Dog dog) {
        this.name = name;
        this.age = age;
        this.happy = happy;
        this.brith = brith;
        this.maps = maps;
        this.lists = lists;
        this.dog = dog;
    }

    public Dog getDog() {
        return dog;
    }

    public void setDog(Dog dog) {
        this.dog = dog;
    }

    public String getName() {
        return name;
    }

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

    public Integer getAge() {
        return age;
    }

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

    public Boolean getHappy() {
        return happy;
    }

    public void setHappy(Boolean happy) {
        this.happy = happy;
    }

    public Date getBrith() {
        return brith;
    }

    public void setBrith(Date brith) {
        this.brith = brith;
    }

    public Map<Object, Object> getMaps() {
        return maps;
    }

    public void setMaps(Map<Object, Object> maps) {
        this.maps = maps;
    }

    public List<Object> getLists() {
        return lists;
    }

    public void setLists(List<Object> lists) {
        this.lists = lists;
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", happy=" + happy +
                ", brith=" + brith +
                ", maps=" + maps +
                ", lists=" + lists +
                ", dog=" + dog +
                '}';
    }
}

测试

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package com.hug;

import com.hug.pojo.Dog;
import com.hug.pojo.Person;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
public class SpringBootApplicationTest {
    @Autowired
    private Dog dog;
    
    @Autowired
    private Person person;
    
    @Test
    public void test01(){
        // Person{name='zhangsan', age=3, happy=false, brith=Mon Apr 10 00:00:00 CST 2023, maps={k1=v1, k2=v2}, lists=[code, music, girl], dog=Dog{name='章帅', age=3}}
        System.out.println(person);
    }
}

JSP303校验

@Validated

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@Component
@ConfigurationProperties(prefix = "person")
@Validated // 通过添加这个注解，来进行校验标识
public class Person {
    @Email(message = "这不是一个邮箱格式")
    private String name;
    private Integer age;
    private Boolean happy;
    private Date brith;
    private Map<Object, Object> maps;
    private List<Object> lists;
    
    private Dog dog;

    public Person() {
    }

    public Person(String name, Integer age, Boolean happy, Date brith, Map<Object, Object> maps, List<Object> lists, Dog dog) {
        this.name = name;
        this.age = age;
        this.happy = happy;
        this.brith = brith;
        this.maps = maps;
        this.lists = lists;
        this.dog = dog;
    }

    public Dog getDog() {
        return dog;
    }

    public void setDog(Dog dog) {
        this.dog = dog;
    }

    public String getName() {
        return name;
    }

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

    public Integer getAge() {
        return age;
    }

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

    public Boolean getHappy() {
        return happy;
    }

    public void setHappy(Boolean happy) {
        this.happy = happy;
    }

    public Date getBrith() {
        return brith;
    }

    public void setBrith(Date brith) {
        this.brith = brith;
    }

    public Map<Object, Object> getMaps() {
        return maps;
    }

    public void setMaps(Map<Object, Object> maps) {
        this.maps = maps;
    }

    public List<Object> getLists() {
        return lists;
    }

    public void setLists(List<Object> lists) {
        this.lists = lists;
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", happy=" + happy +
                ", brith=" + brith +
                ", maps=" + maps +
                ", lists=" + lists +
                ", dog=" + dog +
                '}';
    }
}

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package com.hug;

import com.hug.pojo.Dog;
import com.hug.pojo.Person;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
public class SpringBootApplicationTest {
    @Autowired
    private Dog dog;
    
    @Autowired
    private Person person;
    
    @Test
    public void test01(){
        System.out.println(person);
    }
}

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