3.通過application.properties讀取：

/**
 * 學生實體類
 * Created by ASUS on 2018/5/4
 */
@Component("Student")
public class Student {
    @Value("${student.name}")
    private String name;
@Value("${student.age}")
    private  int age;
    public String getName() {
        return name;
}

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

    public int getAge() {
        return age;
}

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

    public Student(String name, int age) {
        this.name = name;
        this.age = age;
}

    public Student() {
    }

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

/**
 * springboot啟動類
 *
 */
@SpringBootApplication
//讀取resources目錄下的application.properties
@PropertySource("classpath:application.properties")
public class Application
{
    public static void 
 
main( String[] args )
    {
        ApplicationContext applicationContext= SpringApplication.run(Application.class,args);
Student student= (Student) applicationContext.getBean(Student.class);
System.out.println("message:"+student.toString());
}


}

application.properties內容:

student.name= 小康
student.age=15

測試結果：

發現了有中文亂碼問題。

測試結果為：

我的座右銘：不會，我可以學；落後，我可以追趕；跌倒，我可以站起來；我一定行。