JAVA访问配置文件总结

 1 package com.testgs.utils;
 2 
 3 import java.util.*;
 4 import java.io.*;
 5 
 6 
 7 public final class ARConfig {
 8 
 9     private Properties conf = new Properties();
10     private String prefix = "";
11     /**
12      * 全局配置文件名
13      */
14     public static final String GLOBAL_CONF_FILE = "/analysisReportConfig.properties";
15 
16     public ARConfig(String prefix) {
17         this.prefix = prefix;
18         loadConf();
19     }
20 
21     /**
22      * 取得属性文件实例
23      * @param prefix 各数据库连接前缀
24      * @return
25      */
26     public synchronized static ARConfig getInstance(String prefix) {
27         return new ARConfig(prefix);
28     }
29     
30     public String getConfString(String name, String defaultValue) {
31         String result = getConfString(name);
32         result = (result == null) ? defaultValue : result;
33         return result;
34     }
35 
36     /**读取配置信息的 boolean 值
37      * @param name
38      * @param defaultValue
39      * @return
40      */
41     public boolean getConfBoolean(String name, boolean defaultValue) {
42         boolean result = defaultValue;
43         String value = getConfString(name);
44         if (value != null) {
45             value = value.toLowerCase();
46             result = value.equalsIgnoreCase("true") || value.equalsIgnoreCase("yes");
47         }
48         return result;
49     }
50 
51     /**读取配置信息的 boolean 值,如果没有，默认为 false
52      * @param name
53      * @return
54      */
55     public boolean getConfBoolean(String name) {
56         return getConfBoolean(name, false);
57     }
58 
59     /**
60      * 读取配置信息的 int 值
61      * @param name
62      * @param defaultValue
63      * @return
64      */
65     public int getConfigInt(String name, int defaultValue) {
66         String intV = getConfString(name);
67         int result = defaultValue;
68         if (intV != null) {
69             try {
70                 result = Integer.parseInt(intV.trim());
71             } catch (Exception e) {
72                 e.printStackTrace();
73             }
74         }
75         return result;
76     }
77 
78     public String getConfString(String name) {
79         name = this.prefix + name;
80         return conf.getProperty(name);
81     }
82 
83     protected synchronized void loadConf() {
84         conf.clear();
85         InputStream input = null;
86         try {
87             input = this.getClass().getResourceAsStream(GLOBAL_CONF_FILE);
88             conf.load(input);
89         } catch (IOException e) {
90             throw new RuntimeException("找不到配置文件： " + GLOBAL_CONF_FILE);
91         } finally {
92             if (input != null)
93                 try {
94                     input.close();
95                 } catch (Exception closeE) {
96                 }
97         }
98     }
99 }