package cn.kgc.tools;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
//读取配置文件的工具类-单例模式
public class ConfigManager {
private static ConfigManager configManager = new ConfigManager();
private static Properties properties;
//私有构造器-读取数据库配置文件
private ConfigManager(){
String configFile = "database.properties";
properties = new Properties();
InputStream is =
ConfigManager.class.getClassLoader().getResourceAsStream(configFile);
try {
properties.load(is);
is.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/*//全局访问点-(懒汉模式)
public static synchronized ConfigManager getInstance(){
if(configManager == null){
configManager = new ConfigManager();
}
return configManager;
}*/
//饿汉模式
public static ConfigManager getInstance(){
return configManager;
}
public String getValue(String key){
return properties.getProperty(key);
}
}
如何编写单例模型?(饿汉和饱汉模式)
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转载自blog.csdn.net/java_stud/article/details/80975588
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