一个不错的java的配置文件的设置

package property;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.net.URL;
import java.util.Properties;

public class AppConfig {
    private static File proFile = null;

    static {
        String className = AppConfig.class.getName();

        String classNamePath = className.replace(".", "/") + ".class";

        URL is = AppConfig.class.getClassLoader().getResource(classNamePath);

        String path = is.getFile();
        File file = new File(path);
        proFile = new File(file.getParent() + File.separator + "test.property");
    }

    public boolean containsProperty(String key) {
        Properties props = getProperties();
        return props.containsKey(key);
    }

    /**
     * 得到所有的配置
     *
     * @return
     */
    public Properties get() {
        FileInputStream fis = null;
        Properties props = new Properties();
        try {

            fis = new FileInputStream(proFile);
            props.load(fis);
        } catch (Exception e) {
        } finally {
            try {
                fis.close();
            } catch (Exception e) {
            }
        }
        return props;
    }

    public String get(String key) {
        Properties props = get();
        return (props != null) ? props.getProperty(key) : null;
    }

    public Properties getProperties() {
        return get();
    }

    /**
     * 得到cookie
     *
     * @param key
     * @return
     */
    public String getProperty(String key) {
        return get(key);
    }

    /**
     * 删除配置文件
     *
     * @param key
     */
    public void remove(String... key) {
        Properties props = get();
        for (String k : key)
            props.remove(k);
        setProps(props);
    }

    public void removeProperty(String... key) {
        remove(key);
    }

    public void set(Properties ps) {
        Properties props = get();
        props.putAll(ps);
        setProps(props);
    }

    /**
     * 相当于
     *
     * @param key
     * @param value
     */
    public void set(String key, String value) {
        Properties props = get();
        props.setProperty(key, value);
        setProps(props);
    }

    public void setProperties(Properties ps) {
        set(ps);
    }

    public void setProperty(String key, String value) {
        set(key, value);
    }

    /**
     * 添加一个配置
     * @param p
     */
    private void setProps(Properties p) {
        FileOutputStream fos = null;
        try {
            // 把config建在files目录下
            // fos = activity.openFileOutput(APP_CONFIG, Context.MODE_PRIVATE);

            // 把config建在(自定义)app_config的目录下
            fos = new FileOutputStream(proFile);

            p.store(fos, null);
            fos.flush();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                fos.close();
            } catch (Exception e) {
            }
        }
    }

}