| 标题 | java读取配置文件properties的方法 |
| 内容 | 示例： 属性文件：beans.properties articleDao=cn.com.leadfar.cms.backend.dao.impl.ArticleDaoImpl channelDao=cn.com.leadfar.cms.backend.dao.impl.ChannelDaoImpl 使用此属性时类的配置如下： PropertiesBeanFactory.java package cn.com.leadfar.cms.utils; import java.io.IOException; import java.util.Properties; import cn.com.leadfar.cms.backend.dao.ArticleDao; import cn.com.leadfar.cms.backend.dao.ChannelDao; public class PropertiesBeanFactory implements BeanFactory { Properties props = new Properties(); public PropertiesBeanFactory(){ //读取配置文件，得到具体DAO的实现类名 try { props.load(Thread.currentThread().getContextClassLoader().getResourceAsStream("beans.properties")); } catch (IOException e) { e.printStackTrace(); } } public ArticleDao getArticleDao() { String className = props.getProperty("articleDao"); try { Class clz = Class.forName(className); return (ArticleDao)clz.newInstance(); } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (InstantiationException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } return null; } public ChannelDao getChannelDao() { String className = props.getProperty("channelDao"); try { Class clz = Class.forName(className); return (ChannelDao)clz.newInstance(); } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (InstantiationException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } return null; } } |
| 随便看 |
|
在线学习网考试资料包含高考、自考、专升本考试、人事考试、公务员考试、大学生村官考试、特岗教师招聘考试、事业单位招聘考试、企业人才招聘、银行招聘、教师招聘、农村信用社招聘、各类资格证书考试等各类考试资料。