配置的资源文件找不到路径
1.读取系统文件中的内容，代码如下：


import   java.io.FileInputStream;


import   java.util.Properties;

public   class   Read   {
static   Properties   pro   =new   Properties();

static   FileInputStream   fis   =   null;

public   String   getPath()   {
String   path   =   getClass().getClassLoader().getResource( "my.properties ").getPath();
path   =   path.substring(1,   path.length());

return   path;

}

public   static   void   open()   throws   Exception   {
Read   r   =   new   Read();
String   path   =   r.getPath();
fis   =   new   FileInputStream(path);
pro.load(fis);
}

public   static   String   getString(String   name)   throws   Exception   {
open();
String   newname   =   pro.getProperty(name);

return   newname;

}

public   static   void   main(String[]   args)   throws   Exception   {

Read   r   =   new   Read();
String   path   =   r.getPath();
System.out.println(path);
String   url   =   r.getString( "url ");
System.out.println(url);
}

}


进行单体测试时可以读到url。
打印出的路径：       C:/workspace/Test/WebRoot/WEB-INF/classes/my.properties
取得文件内容：       jdbc:oracle:thin:@192.168.0.1:1521:test
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2.链接数据库，代码如下
import   com.ReadProperties;

import   java.io.IOException;
import   java.sql.*;

public   class   getCon   {
private   String   url   =   null;

private   String   username   =   null;

private   String   password   =   null;

private   String   driver   =   null;

ReadProperties   rp   =   new   ReadProperties();

Connection   con   =   null;

public   Connection   getConn()   throws   Exception   {
driver   =   Read.getString( "driver ");
url   =   Read.getString( "url ");
username   =   Read.getString( "username ");
password   =   Read.getString( "password ");
try   {
try   {
Class.forName(driver).newInstance();
}   catch   (InstantiationException   e)   {
//   TODO   自动生成   catch   块
e.printStackTrace();
}   catch   (IllegalAccessException   e)   {
//   TODO   自动生成   catch   块
e.printStackTrace();
}   catch   (ClassNotFoundException   e)   {
//   TODO   自动生成   catch   块
e.printStackTrace();
}
con   =   DriverManager.getConnection(url,   username,   password);
}   catch   (SQLException   e)   {
//   TODO   自动生成   catch   块
e.printStackTrace();
}
return   con;

}

/**
  *   @param   args
  *   @throws   Exception  
  */
public   static   void   main(String[]   args)   throws   Exception   {