PropertiesUtil 读取配置文件工具类

 1 package org.konghao.basic.util;
 2
 3 import java.io.FileInputStream;
 4 import java.io.FileNotFoundException;
 5 import java.io.IOException;
 6 import java.io.InputStream;
 7 import java.util.Enumeration;
 8 import java.util.HashMap;
 9 import java.util.Map;
10 import java.util.Map.Entry;
11 import java.util.Properties;
12
13 import org.apache.wicket.util.file.File;
14 import org.junit.Test;
15
16 public class PropertiesUtil {
17
18     private static Properties properties;
19
20     private String proper_resource;
21     public void setProper_resource(String proper_resource) {
22         this.proper_resource = proper_resource;
23     }
24
25     public PropertiesUtil(String proper_resource) {
26         this.proper_resource = proper_resource;
27     }
28
29     public Map<String,String> getProperties(){
30         properties = getInstance();
31         try {
32             InputStream inputStream = PropertiesUtil.class.getClassLoader().getResourceAsStream(proper_resource);
33             properties.load(inputStream);
34         } catch (IOException e) {
35             e.printStackTrace();
36         }
37         Map<String,String> regMap = new HashMap<String, String>();
38         regMap.put("appId", properties.getProperty("appId"));
39         regMap.put("appsecret", properties.getProperty("appsecret"));
40         regMap.put("base_url", properties.getProperty("base_url"));
41         regMap.put("weixin_token", properties.getProperty("weixin_token"));
42         return regMap;
43     }
44
45     public static Properties getInstance(){
46         if(null == properties){
47             properties = new Properties();
48         }
49         return properties;
50     }
51
52     public static Properties loadResource(String file){
53         properties = getInstance();
54         try {
55             InputStream inputStream = PropertiesUtil.class.getClassLoader().getResourceAsStream(file);
56             System.out.println(inputStream);
57             if(properties != null){
58                 properties.load(inputStream);
59             }
60         } catch (IOException e) {
61             e.printStackTrace();
62         }
63         return properties;
64     }
65
66     public static void main(String[] args) {
67         PropertiesUtil pu = new PropertiesUtil("weixin_basic.properties");
68         Map<String, String> propsMap = pu.getProperties();
69
70         for(Entry<String, String> entry : propsMap.entrySet()) {
71             System.out.println(("key: " + entry.getKey() + ", value: " + entry.getValue()));
72         }
73
74         Properties properties = loadResource("weixin_basic.properties");
75         System.out.println(properties.getProperty("appId"));
76     }
77 }