1.url:http://blog.csdn.net/majian_1987/article/details/11144335
2.
jar:它来自commons-configuration-1.6.jar。
import org.apache.commons.configuration.ConfigurationException; import org.apache.commons.configuration.PropertiesConfiguration; import org.apache.commons.io.FilenameUtils; import org.apache.commons.lang3.StringUtils; public class PropertiesUtils { private static String filePah = ""; private final static String fileName = "jdbc.properties"; static{ filePah = PropertiesUtils.class.getClassLoader().getResource("").getPath(); filePah += fileName; } public static boolean setProperty(final String key,final String value){ return setProperty(fileName,key,value); } public static boolean setProperty(final String fileName,final String key,final String value){ try { PropertiesConfiguration config = null; if(StringUtils.isNotBlank(fileName)&&isValidExtension(fileName)){ config = new PropertiesConfiguration(fileName); config.setProperty(key, value); config.save(); } return true; } catch (ConfigurationException e) { e.printStackTrace(); } return false; } public static String getProperty(final String key){ return getProperty(fileName,key); } public static String getProperty(final String fileName,final String key){ String value = ""; PropertiesConfiguration config = null; try { if(StringUtils.isNotBlank(fileName)&&isValidExtension(fileName)){ config = new PropertiesConfiguration(fileName); value = config.getString(key); } } catch (ConfigurationException e) { e.printStackTrace(); } return value; } private static boolean isValidExtension(final String fileName){ String extension = FilenameUtils.getExtension(fileName); if(StringUtils.equalsIgnoreCase(extension, "properties")){ return true; }else{ return false; } } public static void main(final String[] args){ System.out.println(PropertiesUtils.getProperty("key")); } }
3.PropertiesUtils.java