解析多个ClassPath中的properties文件, 相同的属性将会覆盖之前的载入

╰+攻爆jí腚メ 2022-08-22 06:27 27阅读 0赞

# 1、PropertyUtils工具类 #

package com.iss.itreasury.syscore.utils;
    
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.util.Properties;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.core.io.ClassPathResource;
    import org.springframework.core.io.Resource;
    import org.springframework.util.DefaultPropertiesPersister;
    import org.springframework.util.PropertiesPersister;
    
    /**
     * Properties Util函数.
     * 
     * @author leiyang3
     */
    public class PropertyUtils {
    
    	private static final String DEFAULT_ENCODING = "UTF-8";
    
    	private static Logger logger = LoggerFactory.getLogger(PropertyUtils.class);
    
    	private static PropertiesPersister propertiesPersister = new DefaultPropertiesPersister();
    
    	/**
    	 * 载入多个ClassPath中的properties文件, 相同的属性将会覆盖之前的载入.
    	 * @see org.springframework.beans.factory.config.PropertyPlaceholderConfigurer
    	 */
    	public static Properties loadProperties(String... locations) throws IOException {
    		Properties props = new Properties();
    
    		for (String location : locations) {
    
    			logger.debug("Loading properties file from classpath:" + location);
    
    			InputStream is = null;
    			try {
    				Resource resource = new ClassPathResource(location);
    				is = resource.getInputStream();
    				propertiesPersister.load(props, new InputStreamReader(is, DEFAULT_ENCODING));
    			} catch (IOException ex) {
    				logger.info("Could not load properties from classpath:" + location + ": " + ex.getMessage());
    			} finally {
    				if (is != null) {
    					is.close();
    				}
    			}
    		}
    		return props;
    	}
    }

# 2、使用方法 #

package com.iss.itreasury.test;
    
    import java.io.IOException;
    import java.util.Properties;
    
    import com.iss.itreasury.syscore.utils.PropertyUtils;
    
    public class TestProperty {
    	private static Properties properties = null;
    	private static final String[] filePath = {"sms2Config.properties","application.properties"};
    	public static String getItem(String key){			
    		if(properties == null){
    			try {
    				properties = PropertyUtils.loadProperties(filePath);
    			} catch (IOException e) {
    				e.printStackTrace();
    			}
    		}			
    		return properties.getProperty(key);
    	}
    	public static void main(String[] args) {
    		String oPstation = TestProperty.getItem("op_station");
    		String shortMessageFunctionId = TestProperty.getItem("shortMessageFunctionId");
    		String ftpserverIp = TestProperty.getItem("ftpserver.ip");
    		System.out.println(oPstation);
    		System.out.println(shortMessageFunctionId);
    		System.out.println(ftpserverIp);
    	}
    }

# 3、property文件（src根目录下） #

## 1、application.properties ##

#ftp server config
    
    ftpserver.ip=10.80.0.228
    ftpserver.username=yoyo
    ftpserver.password=123456
    ftpserver.port=

## 2、sms2Config.properties ##

#发送短信功能号
    shortMessageFunctionId=520005
    op_station=192.168.0.1
    sslvpn=sslvpn
    gl_channel_level=3653
    gl_send_level=2
    gl_iswap =0
    gl_wapurl =