web项目，编译成.class出错。

[筱_筱]

import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.util.Vector;

import javax.servlet.http.HttpServletRequest;

import cn.com.sparknet.gov.project.sysconfig.util.TableValues;
import cn.com.sparknet.gov.xdk.Dict;
import cn.com.sparknet.gov.xdk.User;
import cn.com.sparknet.util.Database;

public class DictData {
    private String paramOrg;
    /**
     * 调入数据，在构造的时候执行
     */
    public DictDataWithArch getDictData(long dictId, HttpServletRequest req)
            throws Exception {

        return loadData(dictId, req);
    }

    /**
     * 调入数据
     */
    private DictDataWithArch loadData(long dictId, HttpServletRequest req)
            throws Exception {
        Database db = null;
        DictDataWithArch dictDataWithArch = null; ......

当用tomcat部署好后，在WEB_INF-->class目录下找到编译成的.class文件，用反编译文件打开

import javax.servlet.http.HttpServletRequest;

public class DictData
{
  private String paramOrg;

  public DictDataWithArch getDictData(long dictId, HttpServletRequest req)
    throws Exception
  {
    return loadData(dictId, req); } 
  // ERROR //
  private DictDataWithArch loadData(long dictId, HttpServletRequest req) throws Exception { // Byte code:
    //   0: aconst_null
    //   1: astore 4

当是其他的反编译文件查看为报错，例如：

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

public class ParamUtils
{
  public static String getParameter(HttpServletRequest request, String name)
  {
    return getParameter(request, name, false);
  }

  public static String getParam(HttpServletRequest request, String param, String defaultValue)
  {
    String result = request.getParameter(param);.....

都为报错，求解。