java网页报错，空值引用。但是找不到啊？那位高手来看下。谢!!

java.lang.NullPointerException
java.util.Properties$LineReader.readLine(Properties.java:415)
java.util.Properties.load0(Properties.java:334)
java.util.Properties.load(Properties.java:322)
com.spmusic.db.Conn.<init>(Conn.java:32)
com.spadmin.music.servlet.AdminLogin.doPost(AdminLogin.java:47)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
这个是那里的错呢？、?