JAVA访问配置文件总结

一、全局配置的简单 propertie 文件实现

package com.testgs.utils;

import java.util.*;
import java.io.*;


public final class ARConfig {

    private Properties conf = new Properties();
    private String prefix = "";
    /**
     * 全局配置文件名
     */
    public static final String GLOBAL_CONF_FILE = "/analysisReportConfig.properties";

    public ARConfig(String prefix) {
        this.prefix = prefix;
        loadConf();
    }

    /**
     * 取得属性文件实例
     * @param prefix 各数据库连接前缀
     * @return
     */
    public synchronized static ARConfig getInstance(String prefix) {
        return new ARConfig(prefix);
    }
    
    public String getConfString(String name, String defaultValue) {
        String result = getConfString(name);
        result = (result == null) ? defaultValue : result;
        return result;
    }

    /**读取配置信息的 boolean 值
     * @param name
     * @param defaultValue
     * @return
     */
    public boolean getConfBoolean(String name, boolean defaultValue) {
        boolean result = defaultValue;
        String value = getConfString(name);
        if (value != null) {
            value = value.toLowerCase();
            result = value.equalsIgnoreCase("true") || value.equalsIgnoreCase("yes");
        }
        return result;
    }

    /**读取配置信息的 boolean 值,如果没有，默认为 false
     * @param name
     * @return
     */
    public boolean getConfBoolean(String name) {
        return getConfBoolean(name, false);
    }

    /**
     * 读取配置信息的 int 值
     * @param name
     * @param defaultValue
     * @return
     */
    public int getConfigInt(String name, int defaultValue) {
        String intV = getConfString(name);
        int result = defaultValue;
        if (intV != null) {
            try {
                result = Integer.parseInt(intV.trim());
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return result;
    }

    public String getConfString(String name) {
        name = this.prefix + name;
        return conf.getProperty(name);
    }

    protected synchronized void loadConf() {
        conf.clear();
        InputStream input = null;
        try {
            input = this.getClass().getResourceAsStream(GLOBAL_CONF_FILE);
            conf.load(input);
        } catch (IOException e) {
            throw new RuntimeException("找不到配置文件： " + GLOBAL_CONF_FILE);
        } finally {
            if (input != null)
                try {
                    input.close();
                } catch (Exception closeE) {
                }
        }
    }
}

 更新中。。。