java webService接口调用WordExtractor实例化时候报错

Question

    InputStream in = null;
    WordExtractor extractor = null;
    try {
        in = new FileInputStream(filepath);
        extractor = new org.apache.poi.hwpf.extractor.WordExtractor(in);
        }catch(Exception c){
        c.printStackTrace();
    }
    try {
        if (extractor != null)
            extractor.close();
        if (in != null)
            in.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

Answer 1

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;

import javax.jws.WebMethod;
import javax.jws.WebService;

import org.apache.poi.hwpf.extractor.WordExtractor
引用包
调用接口测试没问题，项目直接在main方法运行也没问题，但是以接口形式访问就报错，求大侠指点，非常感谢