java读取db.properties报异常

db.properties这个文件我想放在src目录下，现在一运行这个Test类在p.load(is);这句就报异常了；
db.properties
[code="java"]
DRIVER=com.microsoft.sqlserver.jdbc.SQLServerDriver
username=sa
password=sasa
url=jdbc:sqlserver://localhost:1433;DatabaseName\=Wss[/code]
[code="java"]
import java.io.InputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Properties;

public class Test {
private static Connection conn = null;
String sDbDriver = null;
String sConnection = null;
String sUser = null;
String sPassword = null;

public void CreateConn(){
    try{
        InputStream is = getClass().getResourceAsStream("/db.properties");
        Properties p = new Properties();
        p.load(is);
        sDbDriver = p.getProperty("DBDriver",sDbDriver);
        System.out.println(sDbDriver);

        sConnection = p.getProperty("Connection", sConnection);
        sUser = p.getProperty("username",sUser);
        sPassword = p.getProperty("password",sPassword);
        Properties pr = new Properties();
        pr.put("user", sUser);
        pr.put("password", sPassword);
        pr.put("characterEncoding", "GB2312");
        pr.put("userUnicode", "TRUE");

        Class.forName(sDbDriver).newInstance();
        conn = DriverManager.getConnection(sConnection,pr);
        System.out.println("数据库连接成功！");
    }catch(Exception ex){
        System.out.println("conn bad!");
        ex.printStackTrace();
    }
}

public static void main(String[] args){
    Test dbc = new Test();
    try{
        dbc.CreateConn();
    }catch(Exception e){
        e.printStackTrace();
    }
}

}
[/code]
报错信息
[code="java"]
conn bad!
java.lang.NullPointerException
at java.util.Properties$LineReader.readLine(Properties.java:418)
at java.util.Properties.load0(Properties.java:337)
at java.util.Properties.load(Properties.java:325)
at com.db.Test.CreateConn(Test.java:19)
at com.db.Test.main(Test.java:44)
[/code]

sDbDriver = p.getProperty("DBDriver",sDbDriver); 你的配置文件里面有DBDriver？

找下路径getClass().getResourceAsStream("/db.properties"); 获得的路径对不对

InputStream is = getClass().getResourceAsStream("/db.properties"); 获取到流为空，load(is)的时候报空指针异常。

sDbDriver = p.getProperty("DBDriver",sDbDriver);

要的是"DBDriver",你在配置文件中的是DRIVER=com.microsoft.sqlserver.jdbc.SQLServerDriver

DBDriver 换成DRIVER 试一试

报错堆栈在at com.db.Test.CreateConn(Test.java:19) ，19行啊，
19：System.out.println(sDbDriver)
你之前定义String sDbDriver = null;
你println了null，所以报错
究其原因，是因为sDbDriver = p.getProperty("DBDriver",sDbDriver);没有获取到值，因为db.properties中根本没有key为"DBDriver"的value，你要把"DBDriver"改成你properties里面有的"DRIVER"（DRIVER=com.microsoft.sqlserver.jdbc.SQLServerDriver ）才行

ResourceBundle rb = ResourceBundle.getBundle("db");
//你想复杂了

rb.getString(key);