java读取WEB-INF下properties配置文件

Properties p = new Properties();
          try{
        String path = this.class.getClass().getResource("/").getPath();//得到工程名WEB-INF/classes/路径
        path=path.substring(1, path.indexOf("classes"));//从路径字符串中取出工程路径
            p.load(new FileInputStream(path+"jdbc.properties"));
        }catch(Exception e){
            e.printStackTrace();
        }

01.package apistudy; 
02. 
03.import java.io.File; 
04.import java.io.FileInputStream; 
05.import java.io.FileOutputStream; 
06.import java.io.IOException; 
07.import java.io.InputStream; 
08.import java.io.OutputStream; 
09.import java.io.UnsupportedEncodingException; 
10.import java.util.Properties; 
11. 
12.public class PropertiesTest 
13.{ 
14. 
15.    public static void main(String[] args) 
16.    { 
17. 
18.        String readfile = "d:" + File.separator + "readfile.properties"; 
19.        String writefile = "d:" + File.separator + "writefile.properties"; 
20.        String readxmlfile = "d:" + File.separator + "readxmlfile.xml"; 
21.        String writexmlfile = "d:" + File.separator + "writexmlfile.xml"; 
22.        String readtxtfile = "d:" + File.separator + "readtxtfile.txt"; 
23.        String writetxtfile = "d:" + File.separator + "writetxtfile.txt"; 
24. 
25.        readPropertiesFile(readfile); //读取properties文件 
26.        writePropertiesFile(writefile); //写properties文件 
27.        readPropertiesFileFromXML(readxmlfile); //读取XML文件 
28.        writePropertiesFileToXML(writexmlfile); //写XML文件 
29.        readPropertiesFile(readtxtfile); //读取txt文件 
30.        writePropertiesFile(writetxtfile); //写txt文件 
31.    } 
32. 
33.    //读取资源文件,并处理中文乱码 
34.    public static void readPropertiesFile(String filename) 
35.    { 
36.        Properties properties = new Properties(); 
37.        try 
38.        { 
39.            InputStream inputStream = new FileInputStream(filename); 
40.            properties.load(inputStream); 
41.            inputStream.close(); //关闭流 
42.        } 
43.        catch (IOException e) 
44.        { 
45.            e.printStackTrace(); 
46.        } 
47.        String username = properties.getProperty("username"); 
48.        String passsword = properties.getProperty("password"); 
49.        String chinese = properties.getProperty("chinese"); 
50.        try 
51.        { 
52.            chinese = new String(chinese.getBytes("ISO-8859-1"), "GBK"); // 处理中文乱码 
53.        } 
54.        catch (UnsupportedEncodingException e) 
55.        { 
56.            e.printStackTrace(); 
57.        } 
58.        System.out.println(username); 
59.        System.out.println(passsword); 
60.        System.out.println(chinese); 
61.    } 
62. 
63.    //读取XML文件,并处理中文乱码 
64.    public static void readPropertiesFileFromXML(String filename) 
65.    { 
66.        Properties properties = new Properties(); 
67.        try 
68.        { 
69.            InputStream inputStream = new FileInputStream(filename); 
70.            properties.loadFromXML(inputStream); 
71.            inputStream.close(); 
72.        } 
73.        catch (IOException e) 
74.        { 
75.            e.printStackTrace(); 
76.        } 
77.        String username = properties.getProperty("username"); 
78.        String passsword = properties.getProperty("password"); 
79.        String chinese = properties.getProperty("chinese"); //XML中的中文不用处理乱码，正常显示 
80.        System.out.println(username); 
81.        System.out.println(passsword); 
82.        System.out.println(chinese); 
83.    } 
84. 
85.    //写资源文件，含中文 
86.    public static void writePropertiesFile(String filename) 
87.    { 
88.        Properties properties = new Properties(); 
89.        try 
90.        { 
91.            OutputStream outputStream = new FileOutputStream(filename); 
92.            properties.setProperty("username", "myname"); 
93.            properties.setProperty("password", "mypassword"); 
94.            properties.setProperty("chinese", "中文"); 
95.            properties.store(outputStream, "author: [email protected]"); 
96.            outputStream.close(); 
97.        } 
98.        catch (IOException e) 
99.        { 
100.            e.printStackTrace(); 
101.        } 
102.    } 
103. 
104.    //写资源文件到XML文件，含中文   
105.    public static void writePropertiesFileToXML(String filename) 
106.    { 
107.        Properties properties = new Properties(); 
108.        try 
109.        { 
110.            OutputStream outputStream = new FileOutputStream(filename); 
111.            properties.setProperty("username", "myname"); 
112.            properties.setProperty("password", "mypassword"); 
113.            properties.setProperty("chinese", "中文"); 
114.            properties.storeToXML(outputStream, "author: [email protected]"); 
115.            outputStream.close(); 
116.        } 
117.        catch (IOException e) 
118.        { 
119.            e.printStackTrace(); 
120.        } 
121.    } 
122. 
123.}