应用环境配置工具_JAVA_编程开发_程序员俱乐部

class="java">#configure the environment
#dev,test,exp
env=dev

package com.test.util;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import org.apache.commons.lang3.StringUtils;

import common.Logger;
/**
 * 环境配置工具类
 * @author donald
 * @date 2017-5-19
 * @time 上午11:13:27
 */
public class ConfigUtil {
	  private static final Logger log = Logger.getLogger(ConfigUtil.class);
	  private static final String ENV = "env";
	  private static final String ENV_DEV = "dev";//开发环境
	  private static final String ENV_TEST = "test";//测试环境
	  private static final String ENV_EXP = "exp";//正式体验环境
	  private static final String CONFIG_FILE = "config.properties";
	  private static volatile ConfigUtil instance = null;
	  private static  Properties envProperties = null;
	  static {
    	  init();
      }
	  public static synchronized ConfigUtil getInstance(){
		  if(instance == null){
			  instance = new ConfigUtil();
		  }
		  return instance;
	  }
	  /**
	   * 初始化配置文件
	   */
	  private static void init(){
//		  String  path = Thread.currentThread().getContextClassLoader().getResource(CONFIG_FILE).getPath();
//		  log.debug("==========congfig file path:"+path);
		  InputStream inputStream =	Thread.currentThread().getContextClassLoader().getResourceAsStream(CONFIG_FILE);
		  envProperties = new Properties();
		  try {
			envProperties.load(inputStream);
		} catch (IOException e) {
			log.error("====load config file error："+e.getMessage());
			e.printStackTrace();
		}
	  }
	  /**
	   * 判断是否为开发环境
	   * @return
	   */
	  public  boolean getEnvDev(){
		     boolean flag = false;
			 String envConfig =  getEnvConfig();
			 if(envConfig.equals(ENV_DEV)){
				 flag = true;
			 }
			 return flag;
	  }
	  /**
	   * 判断是否为测试环境
	   * @return
	   */
	  public  boolean getEnvTest(){
		     boolean flag = false;
			 String envConfig =  getEnvConfig();
			 if(envConfig.equals(ENV_TEST)){
				 flag = true;
			 }
			 return flag;
	  }
	  /**
	   * 判断是否为正式环境
	   * @return
	   */
	  public  boolean getEnvExp(){
		     boolean flag = false;
			 String envConfig =  getEnvConfig();
			 if(envConfig.equals(ENV_EXP)){
				 flag = true;
			 }
			 return flag;
	  }
	  /**
	   * 获取环境配置
	   * @return
	   */
	  protected  String getEnvConfig(){
		 String envConfig =  envProperties.getProperty(ENV);
		 if(StringUtils.isBlank(envConfig)){
			 envConfig = ENV_DEV;
		 }
		 return envConfig;
	  }
	  /**
	   * 获取环境配置文件属性
	   * @return
	   */
	  private  Properties getEnvProperties(){
		  return envProperties;
	  }
	  public static void main(String[] args) {
		  {
			 if(ConfigUtil.getInstance().getEnvDev()){
				  log.info("==========congfig env:dev");
			  }
			 if(ConfigUtil.getInstance().getEnvTest()){
				  log.info("==========congfig env:test");			  
			 }
			 if(ConfigUtil.getInstance().getEnvExp()){
				  log.info("==========congfig env:exp");
			 }
		  }
	}
     
}