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Springboot讀取配置文件及自定義配置文件的方法

更新時間：2017年12月13日 08:43:28 作者：Java從入門到跑路

這篇文章主要介紹了Springboot讀取配置文件及自定義配置文件的方法，非常不錯，具有參考借鑒價值,需要的朋友可以參考下

1.創(chuàng)建maven工程，在pom文件中添加依賴

<parent>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-parent</artifactId>
  <version>1.5.9.RELEASE</version>
  </parent>
 <dependencies>
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <!-- 單元測試使用 -->
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-test</artifactId>
  </dependency>
  <dependency>
   <groupId>junit</groupId>
   <artifactId>junit</artifactId>
   <scope>test</scope>
  </dependency>
 </dependencies>

2.創(chuàng)建項(xiàng)目啟動類 StartApplication.java

package com.kelly.controller;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
@Configuration
@EnableAutoConfiguration //自動加載配置信息
@ComponentScan("com.kelly")//使包路徑下帶有注解的類可以使用@Autowired自動注入
public class StartApplication {
  public static void main(String[] args) {
    SpringApplication.run(StartApplication.class, args);
  }
}
package com.kelly.controller;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
@Configuration
@EnableAutoConfiguration //自動加載配置信息
@ComponentScan("com.kelly")//使包路徑下帶有注解的類可以使用@Autowired自動注入
public class StartApplication {
  public static void main(String[] args) {
    SpringApplication.run(StartApplication.class, args);
  }
}
package com.kelly.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.ResponseBody;
@Controller
public class FirstController {
  @Value("${test.name}")
  private String name;
  @Value("${test.password}")
  private String password;
  @RequestMapping("/")
  @ResponseBody
  String home()
  {
    return "Hello Springboot!";
  }
  @RequestMapping("/hello")
  @ResponseBody
  String hello()
  {
    return "name: " + name + ", " + "password: " + password;
  }
}

5.打開瀏覽器，輸入 http://localhost:8081/springboot/hello 即可看到結(jié)果

6.使用java bean的方式讀取自定義配置文件 define.properties

　　DefineEntity.java

package com.kelly.entity;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;
@Component
@ConfigurationProperties(prefix="defineTest")
@PropertySource("classpath:define.properties")
public class DefineEntity {
  private String pname;
  private String password;
  public String getPname() {
    return pname;
  }
  public void setPname(String pname) {
    this.pname = pname;
  }
  public String getPassword() {
    return password;
  }
  public void setPassword(String password) {
    this.password = password;
  }
}

SecondController.java

package com.kelly.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.kelly.entity.DefineEntity;
@Controller
public class SecondController {
  @Autowired
  DefineEntity defineEntity;
  @RequestMapping("/define")
  @ResponseBody
  String define()
  {
    return "test.name:" + defineEntity.getPname() + ", test.password:" + defineEntity.getPassword();
  }
}

7.打開瀏覽器，訪問 http://localhost:8081/springboot/define，可以看到輸出結(jié)果