Java-properties

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Properties;

public class PropertiesUtil {

    private PropertiesUtil() {}
    
    /**
     * @Title: getValue
     * @Description: 根据资源目录下的文件名，键，获取对应的值
     * @param resourceFileName 资源目录下的properties文件(resource目录)
     * @param key  键名称
     * @return String  返回value值
     * @throws
     */
    public static String getResourceProValue(String resourceFileName,String key) {
        Properties properties = null;
        String value = "";
        try {
            properties = new Properties();
            InputStream in = ClassLoader.getSystemResourceAsStream(resourceFileName);
            properties.load(in);
            value = properties.getProperty(key);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return value;
    }
    
    /**
     * @Title: getValue
     * @Description: 读取指定file，根据key获取value
     * @param file
     * @param key
     * @return String  返回类型
     * @throws
     */
    public static String getSystemProValue(String systemFilePath,String key) {
        Properties properties = null;
        String value = "";
        try {
            properties = new Properties();
            properties.load(new FileInputStream(new File(systemFilePath)));
            value = properties.getProperty(key);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return value;
    }
    
    /**
     * @Title: getProPerties
     * @Description: 根据文件系统路径获取Properties对象
     * @param path
     * @return Properties  返回类型
     * @throws
     */
    public static Properties getSystemProPerties(String systemFilePath) {
        Properties properties = null;
        try {
            properties = new Properties();
            
            properties.load(new InputStreamReader(new FileInputStream(new File(systemFilePath)), "UTF-8"));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return properties;
    }
    
    /**
     * @Title: getProPerties
     * @Description: 根据资源路径下的文件名称获取Properties对象
     * @param path
     * @return Properties  返回类型
     * @throws
     */
    public static Properties getResourceProperties(String resourceFilePath) {
        Properties properties = null;
        try {
            properties = new Properties();
            properties.load(ClassLoader.getSystemResourceAsStream(resourceFilePath));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return properties;
    }
}