解决java enctype multipart form-data文件上传传值问题

package com.ztesoft.crm.device.servlet;

import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import jxl.Sheet;
import jxl.Workbook;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.log4j.Logger;

import com.ztesoft.common.Constant.IConstant;
import com.ztesoft.common.dict.ServiceManager;
import com.ztesoft.common.util.CrmConstants;
import com.ztesoft.common.util.conversion.Strim;

/**

 * 上传文件，导入Excel文件  传入相应的  Bo名称和即将调用的method名称
 * @author hzcl-sky 龚志伟
 *
 */
public class UpLoadFile extends HttpServlet {

/**
 * 
 */
private static final long serialVersionUID = 1L;
/**
 * 输出对象
 */
private PrintWriter out = null;
/**
 * 写日志
 */
private Logger logger=Logger.getLogger(UpLoadFile.class);
/**
 * 设置Service名称
 */
String serviceName=null;
/**
 * 设置调用的方法
 */
String methodName=null;
/**
 * Constructor of the object.
 */
public UpLoadFile() {