java 加载properties

<span style="font-size:18px;">import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.util.Properties;public class Context {private static Properties props = new Properties();static{InputStream in = ClassLoader.getSystemResourceAsStream("context.properties");try {props.load(new BufferedReader(new InputStreamReader(in,"utf-8"))); } catch (IOException e1) {e1.printStackTrace();}}public static String getValue(String key){return props.getProperty(key);}}</span>