PropertiesUtils工具类使用

• wtcservice.properties

zak=10.200.120.1

• 输入文件名使用

private static String zak = "";
static{
    Map resultMap = PropertiesUtils.getProperties("wtcservice.properties");

    if("".equals(zak)){
        zak = (String)resultMap.get("zak");
    }
}

• 取utils工具类中加载的文件内容

String sleep_time_str = PropertiesUtils.getValue("sleep_time");//email_config.properties文件中的内容

• PropertiesUtils工具类
  • MyEclipsez中配置文件路径在工程路径下的config文件夹下。
  • 服务器上配置文件位于classes文件夹下

package nc.util.foundation;

import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;

public class PropertiesUtils{

    //此处可以加入多个文件
    public static String[] filepath = {"/email_config.properties","/task.properties"};

    public static Map map = new HashMap();

    public static Map getProperties(String filename){
        Properties properties = new Properties();
        Map temmap = new HashMap();
        InputStream is = null;
        try{
            is = PropertiesUtils.class.getResource(filename).openStream();
            properties.load(is);
            tempmap.putAll(properties);
        }catch(Exception e){
            throw new RuntimeException(e);
        }finally{
            properties.clear();
            if(is != null){
                try{
                    is.close();
                }catch(IOException e){
                    thorw new RuntimeException(e);
                }
            }
        }
        return tempmap;
    }

    //具体取值方法
    public synhronized static String getValue(String key){
        if(map.size() == 0){
            for(int i = 0; i < filepath.length; i++){
                Properties properties = new Properties();
                InputStream is = null;
                try{
                    is = PropertiesUtils.class.getResource(filepath[i]).openStream();
                    properties.load(is);
                    //校验key是否存在重复
                    for(Iterator iter = map.keySet().iterator(); iter.hasNext();){
                        Object element = (Object) iter.next();
                        if(properties.containsKey(element)){
                            throw new RuntimeException("文件中已经存在key:"+ element + "");
                        }
                    }
                    map.putAll(properties);
                }catch(Exception e){
                    throw new RuntimeException(e);
                }finally{
                    properties.clear();
                    if(is != null){
                        is.close();
                    }catch(IOException e){
                        throw new RuntimeException(e);
                    }
                }
            }
        }
    }
    return (String)map.get(key);
}