读取根目录src下的指定配置properties文件内容

代码如下:

package com.chen.system.util;

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

import com.chen.system.constanct.GenerateConstancts;

public class PropertiesUtil {
    private static Properties properties = new Properties();
    
    /**获取src下配置文件内容
     * 
     * @author : 陈惟鲜
     * @create_date :2013-11-21 下午2:34:44
     * @param key
     * @return
     * @throws IOException
     */
    public static synchronized String get(String key) throws IOException {
        // ClassLoader cl = Thread.currentThread().getContextClassLoader();
        if (properties.isEmpty())
        {
            // 获取编译后文件路径
            String path = PropertiesUtil.class.getResource("/").toString().replace("file:/", "");
            File rootFile = new File(path); // 读取路径下的文件
            if (rootFile.isDirectory()) {
                for (File file : rootFile.listFiles()) {
                    // 当文件名称为指定格式后,读取
                    if (file.getName().lastIndexOf(".properties") > 0) {
                        if (file.isFile()) {
                            InputStream is = new FileInputStream(file);
                            properties.load(is);
                        }
                    }
                }
            }
        }
        
        return properties.getProperty(key);
    }

    /**
     * @author : 陈惟鲜
     * @create_date :2013-11-20 下午3:22:25
     * @param args
     */
    public static void main(String[] args) {
        // 获取配置文件信息
        Properties properties = new Properties();
        try {
            System.out.println("结果:" + PropertiesUtil.get(GenerateConstancts.BEAN_NAME));
            System.out.println("结果:" + PropertiesUtil.get("bb"));
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}
原文地址:https://www.cnblogs.com/a393060727/p/3435538.html