PropertiesUtils

最新推荐文章于 2020-11-25 16:54:17 发布

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最新推荐文章于 2020-11-25 16:54:17 发布

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CC 4.0 BY-SA版权

文章标签： java

原文链接：http://www.cnblogs.com/lshan/p/10283471.html

本文详细介绍了一种在Java中高效读取和更新属性文件的方法，通过使用Properties类结合BufferedInputStream和FileInputStream，实现对属性文件的加载与修改。文章提供了具体的代码示例，展示了如何读取指定路径下属性文件的值，以及如何更新属性文件中的值。

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Properties properties = PropertiesLoaderUtils.loadProperties(new ClassPathResource("properties/LazadaStatusMapping.properties"));



package com.icil.elsa.subscribe.milestone.common.utils;

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Properties;

/**
 * *************************************************************************
 * <PRE>
 *  @ClassName:    : PropertiesUtils 
 *
 *  @Description:    : 
 *
 *  @Creation Date   : 17 Jan 2019 5:28:06 PM
 *
 *  @Author          :  Sea
 *  
 *
 * </PRE>
 **************************************************************************
 */
public class PropertiesUtils {

    /**
     * 
     * @param path
     * @param key
     * @return
     */
    public static String getProperty(String path, String key) {
        Properties properties = new Properties();
        String value = "";
        try {
            synchronized (properties) {
                InputStream in = new BufferedInputStream(new FileInputStream(path));
                properties.load(in);
            }
            value = (String) properties.get(key);
        } catch (FileNotFoundException e1) {

            e1.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        return value;

    }
    
    
    /**
     * 
     * @param path
     * @param key
     * @param value
     */
    public static void updateProperty(String path, String key, String value) {
        Properties properties = new Properties();
        //String profilepath = PropertiesUtils.class.getResource("/").getPath() + path;//nosonar
        try {
            InputStream in = new BufferedInputStream(new FileInputStream(path));
            properties.load(in);
            OutputStream fos = new FileOutputStream(path);
            properties.setProperty(key, value);
            properties.store(fos, "Update value");
            fos.flush();
            fos.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

    public static Properties getProperties(String path) {

        Properties properties = new Properties();
        try {
            synchronized (properties) {
                InputStream in = new BufferedInputStream(new FileInputStream(path));
                properties.load(in);
            }
        } catch (IOException e) {
            return null;
        }

        return properties;
    }
    
    
    /**
     * 
     * @param path
     * @param key
     * @return
     */
    public static String getPropertiesOnServer(String path, String key) {
        Properties properties = new Properties();
        String value = "";
        try {
            InputStream in = new BufferedInputStream(new FileInputStream(path));
            properties.load(in);
            value = (String) properties.get(key);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return value;
    }
    
}