tif格式的base64码图片数据显示到页面
<%@ page contentType="text/html; charset=GBK" %>
<%@ page import="java.io.InputStream"%>
<%@ page import="java.io.IOException"%>
<%@ page import="javax.servlet.ServletOutputStream"%>
<%@ page import="java.sql.*"%>
<%@ page import="ench.base.database.DBManager"%>
<%@ page import="java.sql.Blob"%>
<%@ page import="sun.misc.BASE64Decoder"%>
<%@ page import="java.io.OutputStream"%>
<%@ page import="java.io.FileOutputStream"%>
<%
String ipaddress = (String) request.getParameter("ipaddress");
String invoiceindex=(String) request.getParameter("invoiceindex");
String sql = "select t.imagecode from tax_invoice t where t.invoiceindex='"+invoiceindex+"'";
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
java.sql.Blob blob = null;
String imgFilePath = "";
String imgFileUrl = "";
try {
con = DBManager.getConnection();
con.setAutoCommit(false);
stmt = con.createStatement();
rs = stmt.executeQuery(sql);
if (rs.next()) {
blob = (Blob) rs.getBlob("imagecode");
if (blob != null ) {
String blobString = new String(blob.getBytes(1, (int) blob.length()));
BASE64Decoder decoder = new BASE64Decoder();
byte[] blobbytes = decoder.decodeBuffer(blobString);
System.out.println(blobbytes.length);
for(int i=0;i<blobbytes.length;++i)
{
if(blobbytes[i]<0)
{//调整异常数据
blobbytes[i]+=256;
}
}
//生成tif图片
//本地测试
// imgFilePath = "E:/project/klgas_j2ee/02受控空间/src/code/KunLun_web/kunlun/temp/tmp"+invoiceindex+".tif";//新生成的图片
// imgFileUrl = "http://localhost:8080/kunlun/temp/tmp"+invoiceindex+".tif";
//服务器发布
imgFilePath = "/bea/user_projects/domains/web/kunlun/tmp/tmp"+invoiceindex+".tif";//新生成的图片
imgFileUrl = "http://"+ipaddress+"/kunlun/tmp/tmp"+invoiceindex+".tif";
OutputStream os = new FileOutputStream(imgFilePath);
os.write(blobbytes);
os.flush();
os.close();
}
}
con.setAutoCommit(true);
DBManager.close(rs,stmt,con);
}
catch(IOException e)
{
e.printStackTrace();
throw new Exception(e);
}
catch (Exception ex) {
ex.printStackTrace();
throw ex;
}
%>
<script type="text/javascript">
function setImage(){
var bFlag = document.form1.ImageEx.AutoFit;
document.form1.ImageEx.BkColorR = 128;
document.form1.ImageEx.BkColorG = 128;
document.form1.ImageEx.BkColorB = 128;
document.form1.ImageEx.AutoFit = !bFlag;
//document.form1.ImageEx.SetImageFile("<%=imgFilePath%>");
document.form1.ImageEx.URL = ("<%=imgFileUrl%>");
}
function setURL(){
var urlPath = document.form1.urlPath.value;
if (urlPath.Length == 0){
alert();
return;
}
document.form1.ImageEx.URL = urlPath;
}
function setBackground(){
document.form1.ImageEx.BkColorR = 128;
document.form1.ImageEx.BkColorG = 128;
document.form1.ImageEx.BkColorB = 128;
}
function AutoFit(){
var bFlag = document.form1.ImageEx.AutoFit;
document.form1.ImageEx.AutoFit = !bFlag;
}
</script>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="GENERATOR" content="Microsoft FrontPage 5.0">
</head>
<body onload="setImage()">
<form name="form1">
<div align="center">
<table border="0" width="100%" height="100%">
<tr width="100%">
<td height="100%">
<object classid="clsid:FB4CFDA6-C949-4911-9ABA-D41E2CAE78E7" name="ImageEx" width="100%" height="100%">
</object>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
