How-to bind binary data into textbox

Question

can i bind binary data into the textbox....
coz..i get human unreadable character
[B@184b867#     binary data - byte array
supposingly ..i just need to convert to bytes.toString() to see the content...
yet i try but..it still return this weird character...any idea...
OutMailBean outMailBean = new OutMailBean();
outMailBean.setHost(request.getParameter("SMTP").trim());
outMailBean.setPort(request.getParameter("port").trim());
outMailBean.setMessages(request.getParameterValues("message"));    //string[]
//convert to byte array
outMailBean.setMessage(util.convertStringBufferToByteArr(bean.getMessages()));
//insert into table
Statement stmt = con.createStatement();
try {
ResultSet rs = stmt.executeQuery(squery);
try {
while (rs.next()) {
OutMailBean outMailBean = new OutMailBean();
outMailBean.setEmailId(rs.getString("EMAILID"));
outMailBean.setDateIn(rs.getString("DATEIN"));
outMailBean.setMessage(rs.getBytes("MESSAGE"));
System.err.println(rs.getBytes("MESSAGE").toString());
       //this will return human unreadable form........
OutMailAckBean outMailAckBean = new OutMailAckBean();
outMailAckBean.setAckDelivery(rs.getString("ACKDELIVERY"));     
outMailAckBean.setReceipient(rs.getString("RECEIPIENT"));
beanList.add(outMailBean);
beanList.add(outMailAckBean);
                    } finally {
                         rs.close();
               } finally {
                    stmt.close();
Message was edited by:
        yzme yzme
Message was edited by:
        yzme yzme

Answer 1

Hi yzme,
You need to convert the binary data to characters, a String, before you can properly display it. You say that <i>System.err.println(rs.getBytes("MESSAGE").toString());</i> prints human unreadable stuff. Maybe you need to use another character encoding, like this
byte[] message = rs.getBytes("MESSAGE");
String s = new String(message, "UTF-8"); // or "ISO-8859-1"
It all depends on how the original email message, presumably text, was stored in the database. There's no general way to convert a byte[] to a String and vice versa.
BTW, if you populate your OutMailBean using <i>outMailBean.setMessages(request.getParameterValues("message"));</i> then you're actually saying an email can have several messages and OutMailBean contains a <i>String[] messages</i> attribute. Then, you call the <i>outMailBean.setMessage</i> method which implies an email has one message and according to you comment OutMailBean contains a <i>byte[] message</i> attribute. The question is of course how you convert the <i>String[] messages</i> attribute to the <i>byte[] message</i> attribute. In other words, what does <i>util.convertStringBufferToByteArr</i> exactly do? It doesn't even convert a <i>StringBuffer</i>, but a <i>String[]</i>. What you probably want to do is something like
//OutMailBean bean
String[] messages = bean.getMessages();
StringBuffer sb = new StringBuffer();
for (int j = 0; j < messages.length; j++) {
  sb.append("message ").append(j).append("rn");
  sb.append(messages[j]).append("rnrn");
bean.setMessage(sb.toString().getBytes("UTF-8"));
Kind regards,
Sigiswald