目錄

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基本理論

實例

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基本理論

@ConfigurationProperties

1. 與@Bean結合為屬性賦值；

2. 與@PropertySource（只能用于properties文件）結合讀取指定文件

@ConfigurationProperties()默認從全局配置文件中獲取值

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因為person.properties這個不是全局文件，使用@ConfigurationProperties加載不到。如果想加載他，就得使用@PropertySource進行加載。

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實例

程序結構如下：

從person.properties中讀取文件！

程序運行截圖如下：

源碼如下：

Dog.java

package com.sourceinport.demo.bean;public class Dog {private String name;private Integer age;@Overridepublic String toString() {return "Dog{" +"name='" + name + '\'' +", 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;} }

Person.java

package com.sourceinport.demo.bean;import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.PropertySource; import org.springframework.stereotype.Component;import java.util.Date; import java.util.List; import java.util.Map;@PropertySource(value = {"classpath:person.properties"}) @Component @ConfigurationProperties(prefix = "person") public class Person {private String lastName;private Integer age;private Boolean boss;private Date birth;private Map<String, Object> maps;private List<Object> lists;private Dog dog;@Overridepublic String toString() {return "Person{" +"lastName='" + lastName + '\'' +", age=" + age +", boss=" + boss +", birth=" + birth +", maps=" + maps +", lists=" + lists +", dog=" + dog +'}';}public String getLastName() {return lastName;}public void setLastName(String lastName) {this.lastName = lastName;}public Integer getAge() {return age;}public void setAge(Integer age) {this.age = age;}public Boolean getBoss() {return boss;}public void setBoss(Boolean boss) {this.boss = boss;}public Date getBirth() {return birth;}public void setBirth(Date birth) {this.birth = birth;}public Map<String, Object> getMaps() {return maps;}public void setMaps(Map<String, Object> maps) {this.maps = maps;}public List<Object> getLists() {return lists;}public void setLists(List<Object> lists) {this.lists = lists;}public Dog getDog() {return dog;}public void setDog(Dog dog) {this.dog = dog;} }

DemoApplication.java

package com.sourceinport.demo;import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication public class DemoApplication {public static void main(String[] args) {SpringApplication.run(DemoApplication.class, args);}}

person.properties

person.last-name=王二麻子 person.age=18 person.birth=2019/3/4 person.boss=false person.maps.k1=v1 person.maps.k2=19 person.lists=a,b,c,d,e,f,g,h person.dog.name=小白 person.dog.age=15

DemoApplicationTests.java

package com.sourceinport.demo;import com.sourceinport.demo.bean.Person; 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;@RunWith(SpringRunner.class) @SpringBootTest public class DemoApplicationTests {@AutowiredPerson person;@Testpublic void contextLoads() {System.out.println(person);} }

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