properties属性文件读写

￡神魔★判官ぃ 2021-06-10 20:39 412阅读 0赞

在打包jar包中，和本地运行都没有问题  
我本地的位置是  
![在这里插入图片描述][20200831105608662.png_pic_center]  
服务器的位置是  
![在这里插入图片描述][2020083110573037.png_pic_center]

package com.ktamr.common.utils;
    
    
    
    import java.io.*;
    import java.util.Properties;
    
    
    /**
     * 属性文件的IO操作
     * @author by小可爱
     *
     */
    public class PropertiesUtil {
    
        private static String properiesName = "config/user.properties";
    
        public PropertiesUtil() {
    
        }
    
        public PropertiesUtil(String fileName) {
            this.properiesName = fileName;
        }
    
        /**
         * 按key获取值
         * @param key
         * @return
         */
        public static String readProperty(String key) {
            String value = "";
            InputStream is = null;
            try {
                try {
                    is = new FileInputStream(properiesName);
                } catch (Exception e) {
                    is = PropertiesUtil.class.getClassLoader().getResourceAsStream(properiesName);
                }
                BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
                Properties p = new Properties();
                p.load(br);
                value = p.getProperty(key);
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return value;
        }
    
        /**
         * 获取整个配置信息
         * @return
         */
        public static Properties getProperties() {
            Properties p = new Properties();
            InputStream is = null;
            try {
                try {
                    is = new FileInputStream(properiesName);
                } catch (Exception e) {
                    is = PropertiesUtil.class.getClassLoader().getResourceAsStream(properiesName);
                }
                BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
                p.load(br);
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    is.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return p;
        }
    
        /**
         * key-value写入配置文件
         * @param key
         * @param value
         */
        public static void writeProperty(String key, String value) {
            InputStream is = null;
            OutputStream os = null;
            Properties p = new Properties();
            try {
                try {
                    //本地文件位置
                    is = PropertiesUtil.class.getClassLoader().getResourceAsStream(properiesName);
                    os = new FileOutputStream(PropertiesUtil.class.getClassLoader().getResource(properiesName).getFile());
                } catch (Exception e) {
                    //如果报错就是文件未找到，服务器的位置
                    is = new FileInputStream(properiesName);
                    os = new FileOutputStream(properiesName);
                }
                System.out.println();
                BufferedReader br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
                p.load(br);
    
    
                System.out.println();
                p.setProperty(key, value);
                p.store(os, key);
                os.flush();
                os.close();
            } catch (Exception e) {
                e.printStackTrace();
            } finally {
                try {
                    if (null != is)
                        is.close();
                    if (null != os)
                        os.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
    
        }
    
    
    
    
    
    
    }

[20200831105608662.png_pic_center]: /images/20210522/3cbc5c5494d74280a44a29f650d933ce.png
[2020083110573037.png_pic_center]: /images/20210522/b31521a0a2c7489292c2ff5d01b20c41.png