java中常量文件的配置与读取：html
1 package com.floor.shop.user.util; 2 3 import java.io.InputStream; 4 import java.io.InputStreamReader; 5 import java.util.Enumeration; 6 import java.util.HashMap; 7 import java.util.Map; 8 import java.util.Properties; 9 10 /** 11 * 课程笔记:http://www.cnblogs.com/newAndHui/category/1153640.html 12 * 疑问咨询wx:851298348 13 */ 14 public class ConfigMapUtil { 15 private static Map<String, String> map = new HashMap<>(); 16 17 static { 18 try { 19 //读取文件流 20 InputStream resourceAsStream = Thread.currentThread().getContextClassLoader().getResourceAsStream("config.properties"); 21 //转变为字符流 22 InputStreamReader inputStreamReader = new InputStreamReader(resourceAsStream,"utf-8"); 23 //建立 Properties 对象 24 Properties properties = new Properties(); 25 // prop.load(new InputStreamReader(in, "utf-8")); 26 //加载字符流 27 properties.load(inputStreamReader); 28 //获取全部key 29 Enumeration enumeration = properties.propertyNames(); 30 while (enumeration.hasMoreElements()) { 31 //遍历key 32 String key = (String) enumeration.nextElement(); 33 //根据key取值 34 String value = properties.getProperty(key); 35 //放入map中 36 map.put(key, value); 37 } 38 } catch (Exception e) { 39 e.printStackTrace(); 40 } 41 } 42 public static String getShopWx() { 43 return map.get("shop.wx"); 44 } 45 public static String getValueByKey(String key) { 46 return map.get(key); 47 } 48 49 public static Map<String, String> getMap() { 50 return map; 51 } 52 53 public static void setMap(Map<String, String> map) { 54 ConfigMapUtil.map = map; 55 } 56 57 }
3.测试：java