问无法读取具有相对路径的文档文件

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package com.ssoft.util;

import org.apache.poi.poifs.filesystem.*;
import org.apache.poi.hwpf.*;
import org.apache.poi.hwpf.extractor.*;

import java.io.*;
import java.net.URL;

public class readdocfile {

        /**This is the document that you want to read using Java.
         * @throws Exception **/
    public int totalparas() throws Exception{
        int totparas=0;
        POIFSFileSystem fs = null;
        String[] paragraphs=null;
        String fileName;

        fileName = "C:\\Documents and Settings\\Administrator\\Desktop\\wordfile.doc";


        try {

            fs = new POIFSFileSystem(new FileInputStream(fileName));
            HWPFDocument doc = new HWPFDocument(fs);

            /** Read the content **/
            WordExtractor we = new WordExtractor(doc);

            /**Get the total number of paragraphs**/
            paragraphs = we.getParagraphText();
            totparas=paragraphs.length;
            we.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

        return totparas;
    }   


    public String[] readDocument() throws Exception{
        POIFSFileSystem fs = null;
        String[] paragraphs=null;

        String fileName = "C:\\Documents and Settings\\Administrator\\Desktop\\wordfile.doc";
        try {
            fs = new POIFSFileSystem(new FileInputStream(fileName));
            HWPFDocument doc = new HWPFDocument(fs);

            /** Read the content **/
            WordExtractor we = new WordExtractor(doc);

            /**Get the total number of paragraphs**/
            paragraphs = we.getParagraphText();
            we.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return paragraphs;
    }   

}