springBoot笔记2

10、yaml配置文件获取

11、properties配置文件编码问题

12、@ConfigurationProperties与@Value的区别

@Value不支持松散语法绑定，不支持复杂类型封装
@ConfigurationProperties 批量注入配置文件属性，不支持SPEL，支持JSR303数据校验

@Validate
@Email

如果需要在

14、@PropertySource、@ImportSource、@Bean

@PropertySource指定要加载的配置文件
@ImportSource加载自己写的beans.xml
@Bean给容器中添加组件

15、配置文件占位符

随机数、:指定默认值

16、Profile多环境支持

默认使用application.properties
激活指定profile spring.profiles.acvate=
命令行激活
yml支持多文档块

16、配置文件的加载位置

17、外部配置的加载顺序

18、自动配置原理

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0modelVersion>

    <groupId>com.xinggroupId>
    <artifactId>spring-boot-01-helloworldartifactId>
    <version>1.0-SNAPSHOTversion>


    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>1.5.9.RELEASEversion>
    parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>

        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-configuration-processorartifactId>
            <optional>trueoptional>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
        dependency>

        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
            <scope>testscope>
        dependency>

    dependencies>

    
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
            plugin>
        plugins>
    build>
project>

package com.xing;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;

//@ImportResource(locations = {"classpath:beans.xml"})
//标注一个主程序类
@SpringBootApplication
public class HelloWorldMainApplication {
    public static void main(String[] args) {
        //spring 启动
        SpringApplication.run(HelloWorldMainApplication.class,args);
    }
}

package com.xing;

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

/**
 * 将本类中的所有属性和配置文件中相关配置进行绑定
 *
 * 只有这个组件是容器中的组件，才能提供@ConfigurationProerpties的功能。
 * 默认从全局配置文件中获取
 */
@PropertySource(value = {"classpath:person.properties"})
@Component
//@ConfigurationProperties(prefix = "person")
public class Person {
    /**
     * 
     */
    @Value("${person.last-name}")
    private String lastName;
    @Value("#{11*22}")
    private Integer age;
    @Value("true")
    private Boolean boss;
    private Date birth;

    private Map<String,Object> mps;
    private List<Object> lists;
    private Dog dog;

    @Override
    public String toString() {
        return "Person{" +
                "lastName='" + lastName + '\'' +
                ", age=" + age +
                ", boss=" + boss +
                ", birth=" + birth +
                ", mps=" + mps +
                ", 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> getMps() {
        return mps;
    }

    public void setMps(Map<String, Object> mps) {
        this.mps = mps;
    }

    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;
    }
}

package com.xing;

public class Dog {
    private String name;
    private Integer 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;
    }
}

package com.xing.service;

public class HelloService {
}


package com.xing.controller;

        import org.springframework.beans.factory.annotation.Value;
        import org.springframework.stereotype.Controller;
        import org.springframework.web.bind.annotation.RequestMapping;
        import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @Value("${person.last-name}")
    private String name;
    @RequestMapping("/hello")
    public String hello(){
        return "Hello,World!"+name;
    }
}

package com.xing.config;

import com.xing.service.HelloService;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * @Configuration：指明当前类是是一个配置类，就是代替之前的spring配置文件
 * 以前是在添加组件
 */
@Configuration
public class MyAppConfig {
    //将方法的返回值添加到容器中，容器中这个组件的默认id即方法名
    @Bean
    public HelloService helloService(){
        System.out.println("配置类@Bean给容器中添加组件了");
        return new HelloService();
    }
}

#server.port=8080
#配置person属性
#person.last-name=张国伟
#person.age=18
#person.birth=1999/12/19
#person.boss=false
#person.mps.k1=v1
#person.maps.k2=14
#person.lists=a,b,c
#person.dog.name=dog
#person.dog.age=10

server:
  port: 8080

person:
  lastName: zhangsan
  age: 18
  boss: false
  birth: 2017/12/12
  maps: {k1: v1,k2: 12}
  lists:
    - lisi
    - zhaoliu
    - wangwu
  dog:
    name: 小狗
    age: 2

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="helloService" class="com.xing.service.HelloService">bean>
beans>

#配置person属性
person.last-name=张国伟
person.age=18
person.birth=1999/12/19
person.boss=false
person.mps.k1=v1
person.maps.k2=14
person.lists=a,b,c
person.dog.name=dog
person.dog.age=10

import com.xing.HelloWorldMainApplication;
import com.xing.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.context.ApplicationContext;
import org.springframework.test.context.junit4.SpringRunner;

/**
 * spring boot单元测试
 * 可以在测试期间很方便类似编码一样进行自动注入
 */

@RunWith(SpringRunner.class)
@SpringBootTest(classes = HelloWorldMainApplication.class)
public class ApplicationTests {
    @Autowired
    Person person;

    @Autowired
    ApplicationContext ioc;

    @Test
    public void contextLoads(){
        System.out.println(person);
    }

    @Test
    public void testHelloService(){
        System.out.println(ioc.containsBean("helloService"));
    }
}