Spring导入properties配置文件代码示例

将外部属性文件的数据配置到bean的配置文件，依赖于context标签下的property-placeholder标签

1、准备properties文件

url=jdbc:mysql://localhost:3306/hibernate_db
username=root
password=1111

2、编写对应实体类

package com.yl.bean;

public class DataSource {
  private String url;
  private String username;
  private String password;

  public DataSource() {
  }

  public String getUrl() {
    return url;
  }

  public void setUrl(String url) {
    this.url = url;
  }

  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;
  }

  @Override
  public String toString() {
    return "DataSource{" +
 "url='" + url + ''' +
 ", username='" + username + ''' +
 ", password='" + password + ''' +
 '}';
  }
}

3、spring配置文件

4、测试

package com.yl;

import com.yl.bean.DataSource;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MainTest {

  public static void main(String[] args) {
    ApplicationContext applicationContext=new ClassPathXmlApplicationContext("bean1.xml");

    DataSource dataSource= (DataSource) applicationContext.getBean("dataSource");

    System.out.println(dataSource);
  }
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。