sunglobal.java

计算机技术的快速发展

/*
 * 创建日期 2005-5-5
 */
package com.suninformation.tools;

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

/**
 * @author 刘镇
 */

public class SunGlobal {

	private static String appHome = null;

	private static String dbClassForName = null;

	private static String dbServer = null;

	private static String dbUser = null;

	private static String dbPwd = null;

	private static String version = null;

	private static String helpHome = null;

	public static String getPersonValue(String valueName)
			throws UnloadPropertiesException {
		String values = null;
		if (values == null) {
			values = new InitPropLoader().getValue(valueName);
		}
		return values;
	}

	public static String getHelpHome() throws UnloadPropertiesException {
		if (helpHome == null) {
			helpHome = new InitPropLoader().getValue("helpHome");
			if (helpHome == null) {
				helpHome = System.getProperty("helpHome");
			}
		}
		return helpHome;
	}

	public static String getVersion() throws UnloadPropertiesException {
		if (version == null) {
			version = new InitPropLoader().getValue("version");
			if (version == null) {
				version = System.getProperty("version");
			}
		}
		return version;
	}

	public static String getAppHome() throws UnloadPropertiesException {
		if (appHome == null) {
			appHome = new InitPropLoader().getValue("appHome");
			if (appHome == null) {
				appHome = System.getProperty("userHome");
			}
		}
		return appHome;
	}

	public static String getDbClassForName() throws UnloadPropertiesException {
		if (dbClassForName == null) {
			dbClassForName = new InitPropLoader().getValue("dbClassForName");
			if (dbClassForName == null) {
				dbClassForName = System.getProperty("dbClassForName");
			}
		}
		return dbClassForName;
	}

	public static String getDbServer() throws UnloadPropertiesException {
		if (dbServer == null) {
			dbServer = new InitPropLoader().getValue("dbServer");
			if (dbServer == null) {
				dbServer = System.getProperty("dbServer");
			}
		}
		return dbServer;
	}

	public static String getDbUser() throws UnloadPropertiesException {
		if (dbUser == null) {
			dbUser = new InitPropLoader().getValue("dbUser");
			if (dbUser == null) {
				dbUser = System.getProperty("dbUser");
			}
		}
		return dbUser;
	}

	public static String getDbPwd() throws UnloadPropertiesException {
		if (dbPwd == null) {
			dbPwd = new InitPropLoader().getValue("dbPwd");
			if (dbPwd == null) {
				dbPwd = System.getProperty("dbPwd");
			}
		}
		return dbPwd;
	}
}

class InitPropLoader {

	public String getValue(String valueName) throws UnloadPropertiesException {
		String m_Var = null;
		Properties initProps = new Properties();
		InputStream in = null;
		try {
			in = getClass().getResourceAsStream("/suninfo_init.properties");
			initProps.load(in);
		} catch (Exception e) {
			throw new UnloadPropertiesException("无法读取系统属性文件。", e);
		} finally {
			try {
				if (in != null) {
					in.close();
				}
			} catch (Exception e) {
			}
		}
		if (initProps != null) {
			m_Var = initProps.getProperty(valueName);
			if (m_Var != null) {
				m_Var = m_Var.trim();
			}
		}
		return m_Var;
	}
}