我在jsp页面中添加了一个新的方法“ encrypt”。添加此方法后，出现状态码为500的错误，但是添加此方法之前，没有错误。以下是发生错误的jsp页面。谁能帮助我找出错误所在？
<%@ page language="java" contentType="text/html" %>
<%@page import="java.sql.*,java.util.*" %>
<%@page import="java.io.*"%>
<%@page import="java.io.IOException"%>
<%@page import="java.io.UnsupportedEncodingException"%>
<%@page import="java.security.InvalidAlgorithmParameterException"%>
<%@page import="java.security.InvalidKeyException"%>
<%@page import="java.security.NoSuchAlgorithmException"%>
<%@page import="java.security.spec.AlgorithmParameterSpec"%>
<%@page import="java.security.spec.InvalidKeySpecException"%>
<%@page import="java.security.spec.KeySpec"%>
<%@page import="java.security.spec.KeySpec"%>
<%@page import="java.security.*"%>
<%@page import="javax.crypto.*"%>
<%@page import="javax.crypto.spec.PBEKeySpec"%>
<%@page import="javax.crypto.spec.PBEParameterSpec"%>
<%@page import="java.util.Base64"%>
<%
String op = request.getParameter("op");
String saltID = (String)request.getAttribute("csrfPreventionSalt");
String key = "ezeon8547";
String enc = encrypt(key, saltID);
System.out.println("Encrypted text: "+enc);
if(saltID != null)
{
session.setAttribute("crsf", saltID);
}
if(op==null) { //out.println(">>>>>>>>>>>>"+session.getAttribute("REGISTRATION_ERROR"));
session.removeAttribute("registerBean");
session.removeAttribute("REGISTRATION_ERROR");
//session.invalidate();
}
%>
<%
if(session.getAttribute("REGISTRATION_ERROR")!=null) {
}
try {
if(true) {
String address = "my address"
String state = "my state";
String city = "my city";
String pincode = "500100";
%>
<table align="left" border="0" width="80%">
<tr>
<td></td> <!-- For right space -->
<!-- Data Table STart Below -->
<td>
<table width="100%" cellpadding="0" cellspacing="0">
<tr><td width="100%">
<div class="frmtbldata">
<table width="100%" cellpadding="4" cellspacing="1" style="font-size: 1.1em">
<tr>
<th height="20" class="centr" colspan="2" valign="top">Edit Address
</th>
</tr>
<tr>
<th width="40%" >Enter your existing address</th>
<td ><input type="text" name="addressOld" id="addressOld" value="<%=address%>" readonly class="reporttitle1"></input>
</td>
</tr>
<tr>
<th width="40%" > <font class="contenttext">Enter your existing city</td>
<td class="t0"><input type="text" name="cityOld" id="cityOld" value="<%=city%>" readonly class="reporttitle1"></input>
</td>
</tr>
<tr>
<th width="40%" >Enter your existing state</th>
<td ><input type="text" name="stateOld" id="stateOld" value="<%=state%>" readonly class="reporttitle1"></input>
</td>
</tr>
<tr>
<th width="40%" >Enter your existing pincode</th>
<td ><input type="text" name="pincodeOld" id="pincodeOld" value="<%=pincode%>" readonly class="reporttitle1"></input>
</td>
</tr>
<tr>
<th width="40%">Enter your new address</th>
<td ><input type="text" name="addressNew" id="addressNew" value="" class="reporttitle1"></input>
</td>
</tr>
<tr>
<th width="40%">Enter your new city</th>
<td><input type="text" name="cityNew" id="cityNew" value="" class="reporttitle1"></input>
</td>
</tr>
<tr>
<th width="40%" >Enter your new state</font></th>
<td class="t0"><input type="text" name="stateNew" id="stateNew" value="" class="reporttitle1"></input>
</td>
</tr>
<tr>
<th width="40%">Enter your new pincode</td>
<td ><input type="text" name="pincodeNew" id="pincodeNew" value="<%= saltID %>" maxlength="6" class="reporttitle1"></input>
</td>
</tr>
<td ><input type="text" name="saltToken" id="saltToken" value="<%= saltID %>"></input>
</td>
<!--<td ><input type="hidden" name="crsf" id="crsf" value="<%= saltID %>"></input> -->
</td>
<th height="30" class="centr" colspan="2">
<input type="button" value="Submit" id="Submit" onClick="validateAddress('/registration/tv/trades/newStructure/editModule/editAddressConfirm.jsp?module=A&Token=<%= saltID %>')">
<img src="/images/trans.gif" width="80" height="1">
<!--<input type="reset" name ="reset" value="Clear" > -->
</th>
</tr>
</table>
</div>
</td></tr>
</table>
</td>
<!-- Data Table end -->
<td></td><!-- For left space -->
</tr>
</table>
<%}else{
System.out.println("Invalid user in edit address >>>>>>>>>>>>");
}
}catch(Exception e){
System.out.println("Invalid user in edit address >>>>>>>>>>>>.Please try later");
}
%>
<%!
public String encrypt(String secretKey, String plainText)
throws NoSuchAlgorithmException,
InvalidKeySpecException,
NoSuchPaddingException,
InvalidKeyException,
InvalidAlgorithmParameterException,
UnsupportedEncodingException,
IllegalBlockSizeException,
BadPaddingException,
Exception
{
Cipher ecipher;
// 8-byte Salt
byte[] salt = {(byte) 0xA9, (byte) 0x9B, (byte) 0xC8, (byte) 0x32, (byte) 0x56, (byte) 0x35, (byte) 0xE3, (byte) 0x03};
// Iteration count
int iterationCount = 19;
//Key generation for enc and desc
KeySpec keySpec = new PBEKeySpec(secretKey.toCharArray(), salt, iterationCount);
SecretKey key = SecretKeyFactory.getInstance("PBEWithMD5AndDES").generateSecret(keySpec);
// Prepare the parameter to the ciphers
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, iterationCount);
//Enc process
ecipher = Cipher.getInstance(key.getAlgorithm());
ecipher.init(Cipher.ENCRYPT_MODE, key, paramSpec);
String charSet="UTF-8";
byte[] inP = plainText.getBytes(charSet);
byte[] outP = ecipher.doFinal(inP);
String encStr = Base64.getEncoder().encodeToString(outP);
return encStr;
}
%>
我知道在jsp页面中编写Java代码不是一种好习惯。