今天这篇文章给大家介绍自定义配置的两种方式 第一式： 使用@ConfigurationProperties，且看代码

package com.developlee.customconfig.config;import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.context.properties.NestedConfigurationProperty;
import org.springframework.context.annotation.Configuration;/*** @author Lensen* @desc* @since 2018/8/22 12:59*/
@Configuration
@ConfigurationProperties(prefix = "one-app")
public class OneAppConfig {@NestedConfigurationPropertypublic Account account = new Account();public String appName;public Account getAccount() {return account;}public void setAccount(Account account) {this.account = account;}public String getAppName() {return appName;}public void setAppName(String appName) {this.appName = appName;}public class Account {private String username;private String password;private String age;public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getAge() {return age;}public void setAge(String age) {this.age = age;}}
}

很明显，这就是我们要在properties文件中要配置的配置项。 再看第二种方式

/*** @author Lensen* @desc* @since 2018/8/22 13:19*/
@Configuration
public class TwoAppConfig {@Value("${two-app.welcome.message}")public String twoAppWelcomeMessage;@Value("${two-app.welcome.person}")public String twoAppWelcomePerson;public String getTwoAppWelcomeMessage() {return twoAppWelcomeMessage;}public void setTwoAppWelcomeMessage(String twoAppWelcomeMessage) {this.twoAppWelcomeMessage = twoAppWelcomeMessage;}public String getTwoAppWelcomePerson() {return twoAppWelcomePerson;}public void setTwoAppWelcomePerson(String twoAppWelcomePerson) {this.twoAppWelcomePerson = twoAppWelcomePerson;}
}

这个就简单粗暴啦。没有第一种方式结构那么清晰，具体怎么使用，完全取决于项目配置项的关联关系和复杂度，需要大家根据实际情况权衡。 接下来我写了个简单的测试类，来获取我们的配置信息 先看配置文件：

one-app:app-name: OneAPPaccount:username: Lensenpassword: Orclage: 22two-app:welcome:message: welcome to lensen's bolgperson: LENSEN

一个简单的Controller类

package com.developlee.customconfig.controller;import com.developlee.customconfig.config.OneAppConfig;
import com.developlee.customconfig.config.TwoAppConfig;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;/*** @author Lensen* @desc* @since 2018/8/22 16:40*/
@RestController
public class AppController {@Autowiredprivate OneAppConfig oneAppConfig;@Autowiredprivate TwoAppConfig twoAppConfig;@GetMapping("/hello")public ResponseEntity getConfig() {String str1 = "oneAppConfig: " + oneAppConfig.getAppName() + oneAppConfig.getAccount().getUsername()+ oneAppConfig.getAccount().getPassword() + oneAppConfig.getAccount().getAge();String str2 = "twoAppConfig: " + twoAppConfig.getTwoAppWelcomePerson() + twoAppConfig.getTwoAppWelcomeMessage();return new ResponseEntity(str1 +"~~~~~~~"+ str2, HttpStatus.OK);}
}

在地址栏输入http:localhost:8080/hello, 回车 也可以自己指定文件，只需在类上加上注解@PropertySource注解就好了~~

@Configuration
@PropertySource("classpath:my.properties")
public class ThreeConfig {@Value("${my.name}")private String myName;public String getMyName() {return myName;}public void setMyName(String myName) {this.myName = myName;}
}

my.properties文件内容：

my.name=developlee

测试结果：

如果配置文件是yml格式的，则要使用YamlPropertiesFactoryBean来加载并设置到PropertySourcesPlaceholderConfigurer中

// 加载YML格式自定义配置文件@Beanpublic static PropertySourcesPlaceholderConfigurer properties() {PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();YamlPropertiesFactoryBean yaml = new YamlPropertiesFactoryBean();yaml.setResources(new FileSystemResource("config.yml"));//File引入
//      yaml.setResources(new ClassPathResource("youryml.yml"));//class引入configurer.setProperties(yaml.getObject());return configurer;

end... 浮躁的社会，浮躁的人生，唯有代码，宁静致远。（又开始装13了,见谅.....）

最后，以上示例代码可在我的github.com中找到。 我的个人公众号：developlee的潇洒人生。 关注了也不一定更新，更新就不得了了。