環境依賴

sprint-boot version 2.1.7

java version 1.8

pom.xml 依賴jar包

org.springframework.boot

spring-boot-configuration-processor

true

test.properties

username=test

password=123456

info.age=26

看下目錄布局

TestConfig.java 加載配置的類文件

//prefix 為空則加載整個配置文件中的 參數

@ConfigurationProperties(prefix = "")

@PropertySource("classpath:test.properties")

//注意一定要注冊

@Component

public class TestConfig {

private String username;

private String password;

private Info info;

public void setInfo(Info info) {

this.info = info;

}

public Info getInfo() {

return info;

}

public String getUsername() {

return username;

}

public String getPassword() {

return password;

}

public void setUsername(String username) {

this.username = username;

}

public void setPassword(String password) {

this.password = password;

}

public static class Info{

private Integer age;

public Integer getAge() {

return age;

}

public void setAge(Integer age) {

this.age = age;

}

@Override

public String toString() {

return "Info{" +

"age=" + age +

'}';

}

}

@Override

public String toString() {

return "TestConfig{" +

"username='" + username + '\'' +

", password='" + password + '\'' +

", info=" + info +

'}';

}

}

HelloController.java 用來測試

@Controller

public class HelloController {

@Autowired

TestConfig testConfig;

@ResponseBody

@GetMapping("/hello")

public String sayHello()

{

//讀取配置

return "age=" + testConfig.getInfo().getAge();

}

@ResponseBody

@GetMapping("username")

public String getUsername()

{

//讀取配置測試

return testConfig.getUsername();

}

}

總結

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