帮忙调试这个程序！！！！谢谢！！！急！__resource_String_PropertyResourceBundle_connectalias_jdbcDriver_

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帮忙调试这个程序！！！！谢谢！！！急！

来源: 互联网发布时间：2017-03-25

本文导语: import java.util.*; import java.io.*; public class ReadIniFile { private static Hashtable has = new Hashtable(); static String head = "#"; public ReadIniFile() { } public void ReadFile() throws Exception { **** ClassLoader cla...

import java.util.*;
import java.io.*;
public class ReadIniFile {

  private static Hashtable has = new Hashtable();
  static String head = "#";
  public ReadIniFile() {
  }
  public  void ReadFile() throws Exception {
  ****     ClassLoader classloader = getClass().getClassLoader();
  ****      PropertyResourceBundle resource =new PropertyResourceBundle(classloader.getResourceAsStream("D://ConnectionPool.ini"));
       //InputStream resource = getClass().getResourceAsStream("D://ConnectionPool.ini");
        Enumeration enu = resource.getKeys();
        while (enu.hasMoreElements()) {
                String alias = (String) enu.nextElement();
                if (alias.endsWith("jdbcDriver")) {
                 // String str="jdbcDriver";
                   puthashtable(alias, "jdbcDriver", resource);
                }
        }
  }
private void puthashtable(String alias,String str,PropertyResourceBundle resource)
        throws Exception {
             //read from resource
                String connectalias = alias.substring(0, alias.length() - str.length());
               if (has.get(head + connectalias) == null) {
             String jdbcDriver = resource.getString(connectalias + "jdbcDriver");
             String jdbcURI = resource.getString(connectalias + "jdbcURI");
             String dbusername = resource.getString(connectalias + "dbusername");
             String dbpassword = resource.getString(connectalias + "dbpassword");
             System.out.println(jdbcDriver+""+jdbcURI+""+dbusername+""+dbpassword+"");
                }
        }

  public static void main(String[] args) throws Exception {
    ReadIniFile readIniFile1 = new ReadIniFile();
    readIniFile1.ReadFile();

  }
}

一到*出跳出了

PropertyResourceBundle resource =new PropertyResourceBundle(classloader.getResourceAsStream("D://ConnectionPool.ini"));
是这句的问题拉
你classloader.getResourceAsStream("D://ConnectionPool.ini")返回的是一个为null的InputStream对象，所以会造成空指针错误……

import java.util.*;
import java.io.*;
public class t021216 {

  private static Hashtable has = new Hashtable();
  static String head = "#";
  public t021216() {
  }
  public  void ReadFile() throws Exception {
   System.out.println("before");
     ClassLoader classloader = getClass().getClassLoader();
     System.out.println("after");
        PropertyResourceBundle resource =new PropertyResourceBundle(classloader.getResourceAsStream("D:/ConnectionPool.ini"));
       //InputStream resource = getClass().getResourceAsStream("D://ConnectionPool.ini");
        Enumeration enu = resource.getKeys();
        while (enu.hasMoreElements()) {
                String alias = (String) enu.nextElement();
                if (alias.endsWith("jdbcDriver")) {
                 // String str="jdbcDriver";
                   puthashtable(alias, "jdbcDriver", resource);
                }
        }
  }
private void puthashtable(String alias,String str,PropertyResourceBundle resource)
        throws Exception {
             //read from resource
                String connectalias = alias.substring(0, alias.length() - str.length());
               if (has.get(head + connectalias) == null) {
             String jdbcDriver = resource.getString(connectalias + "jdbcDriver");
             String jdbcURI = resource.getString(connectalias + "jdbcURI");
             String dbusername = resource.getString(connectalias + "dbusername");
             String dbpassword = resource.getString(connectalias + "dbpassword");
             System.out.println(jdbcDriver+""+jdbcURI+""+dbusername+""+dbpassword+"");
                }
        }

  public static void main(String[] args) throws Exception {
    t021216 readIniFile1 = new t021216();
    readIniFile1.ReadFile();

  }

Parameters:name - the resource name
Returns:an input stream for reading the resource, or null if the resource could not be found

是不是**** ClassLoader classloader = getClass().getClassLoader();這句話不對.沒有將一個handle指向創建的對象,沒有實例化

同意楼上的意见，其实，你可以
ClassLoader classloader = getClass().getClassLoader();
       System.out.println("Hello");
       PropertyResourceBundle resource =new PropertyResourceBundle(classloader.getResourceAsStream("D://ConnectionPool.ini"));
       System.out.println("bye");
然后，就知道，是那句话出现问题了的！

把错误提示，贴出来！