java 数据的加密与解密普遍实例代码

这是一个关于密钥查询的jsp文件，接受上级文件的数据并加密处理，放入Map集合中，通过form表单提交到xdoc文件中；不过这种做法是为了满足公司的要求，用到了框架的内容不免显得繁琐；下篇文章会介绍一种简便的不需要搭建太多环境的普遍做法。

<br><br><%@ page language="java" contentType="text/html; charset=utf-8"
 pageEncoding="utf-8"%>
<%@page import="java.io.IOException"%>
<%@page import="java.util.ArrayList"%>
<%@page import="java.util.List"%>
<%@page import="java.util.HashMap"%>
<%@page import="java.util.Map"%>
<%@page import="java.sql.*"%>
<%@page import="java.util.*"%>
 <%@page import="java.sql.ResultSet"%>
 <%@page import="combiz.system.IBOSrvUtil"%>
 <%@page import="combiz.ui.epassmanager.entitys.Base64"%>

<%@ include file="xdocserver.jsp" %>

<%
  String path = request.getContextPath();
  String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
  String xdocserver1 = EjbServerName.getValue("xdocserver");
  System.out.println("basePath basePath==========================="+basePath);
 %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<%
  StringBuffer sb=new StringBuffer();
  String part = request.getParameter("szbm");
  String str1=new String(part.getBytes("ISO-8859-1"),"GBK");
  String sta = request.getParameter("syzt");
  String str2=new String(sta.getBytes("ISO-8859-1"),"GBK");
  String tems1 = "";
 if(str2.equals("正在使用")){
   tems1="use";
  }else if(str2.equals("暂停使用")){
   tems1="pause";
  }else if(str2.equals("停止使用")){
   tems1="stop";
  } else{
   tems1="use";
  }
  String s1 = Base64.encodeFixLenString(tems1);
  String sql="";
   List menuList=new ArrayList();
   sql =" select t.companyid ,a.laborname ,t.keysn ,t.keystatus from sys_key t "+
   " left join IBSUSERS b on b.id = t.id left join labor a on a.labornum = b.labornum where 1=1 ";
   if(!str1.equals("")){
    sql +=" and t.companyid like '%"+str1+"%' ";
   }
   if(!s1.equals("")){
    sql +=" and t.keystatus = '"+s1+"'";
   }
    try {
    List list = IBOSrvUtil.getBaseDao().selectListBySql(sql);
    sb.append("<xdata>");
    if(list.size()>0){
     for(int i=0;i<list.size();i++){
      Map map = (Map) list.get(i);
      sb.append("<row>");
      String keysn=Base64.decodeToFixLenString(map.get("KEYSN")==null?"":map.get("KEYSN").toString());
      String laborname=map.get("LABORNAME")==null?"":map.get("LABORNAME").toString();
      String companyid=map.get("COMPANYID")==null?"":map.get("COMPANYID").toString();
      String temstatus =Base64.decodeToFixLenString(map.get("KEYSTATUS")==null?"":map.get("KEYSTATUS").toString());
      Map<String, String> compMap = new HashMap<String, String>();
       String status = "";
      if(temstatus.equals("use")){
       status="正在使用";
      }else if(temstatus.equals("pause")){
       status="暂停使用";
      }else{
       status="停止使用";
      }
         sb.append("<col1>").append(keysn).append("</col1>");
         sb.append("<col2>").append(laborname).append("</col2>");
         sb.append("<col3>").append(companyid).append("</col3>");
         sb.append("<col4>").append(status).append("</col4>");

        sb.append("</row>");
    }
    }
    sb.append("</xdata>");
    } catch (Exception e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
    }
  System.out.println("sb===null=============="+sb);
 %>
   <iframe name="xdoc" width="100%" height="100%"></iframe>
  <form name="form1" action="http://11.1.1.152:8088/xdoc/realty/mycx.xdoc" method="post" target="xdoc" style="display: none">
  <input name="data" type="hidden" value="<%=sb.toString()%>" />

  </form>
</body>
 <script language="javascript">
   document.form1.submit();
  </script>
  <script type="text/javascript">
   function dosubmit(){
     document.getElementById("btnSub").disabled = true;
     if(document.getElementById("szbm" ).value!="" || document.getElementById("syzt" ).value!="" )
     {
     var f1 = document.getElementById("b1");
     f1.submit();
     } else{
     alert("请输入查询条件！");
     document.getElementById("btnSub").disabled = false;
     return ;
     }
   }
   //如果这三个条件同时为空的话就弹出提示框。否则执行F1并提交F1.就是得到的B1
</html>

希望本篇文章实例代码对您有所帮助