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我有以下一段servlet代碼（在Apache Tomcat v7.0上運行）試圖從jsp頁面獲取用戶輸入，然後嘗試對其進行AES加密（在我的AES_BC使用充氣城堡）。我正在實例化我的AES_BC類，以便在方法myname（）中進行測試。服務器啓動正常，我可以提供一些輸入，但是當在doGet中調用myname（）時，我得到一個運行時異常。代碼和異常在下面給出：使用jsp servlet和充氣城堡運行時異常
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import aes_bc.AES_BC;
@WebServlet(name = "EncryptServlet", urlPatterns = {"/Encrypt"})
public class EncryptServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException
{
// reading the user input
String query= request.getParameter("color");
String color = "blue";
PrintWriter out = response.getWriter();
myname();
System.out.println("color:"+color);
System.out.println("user query:"+query);
byte [] in_bytes = query.getBytes();
String tsMsg = query + new SimpleDateFormat("yyyyMMddhhmm").format(new Date());
System.out.println("time stamped message:"+tsMsg+"\n");
out.println (
"<!DOCTYPE html PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\"" + "http://www.w3.org/TR/html4/loose.dtd\">\n" +
"<html> \n" +
"<head> \n" +
"<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"> \n" +
"<title> Bouncy Castle Encryption/Crypto JS decryption </title> \n" +
"</head> \n" +
"<body> \n" +
"<font size=\"9px\" color=\"" + color + "\">" +
"Plain text query:" + query +
"</font> \n" +
"<li>" + "Timestamped query:" + tsMsg +
"</li> \n" +
"</body> \n" +
"</html>"
);
}
public void myname(){
byte[] enc_key = "abcdefghijklmn".getBytes();
AES_BC aesencrypt = new AES_BC(enc_key);
String msg1 = "test msg";
byte [] in_bytes = msg1.getBytes();
System.out.println("message:"+msg1);
}
}
例外如下所示：
javax.servlet.ServletException: Servlet execution threw an exception
root cause
java.lang.NoClassDefFoundError: org/bouncycastle/crypto/BlockCipher
EncryptServlet.myname(EncryptServlet.java:59)
EncryptServlet.doGet(EncryptServlet.java:26)
javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
root cause
java.lang.ClassNotFoundException: org.bouncycastle.crypto.BlockCipher
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
EncryptServlet.myname(EncryptServlet.java:59)
EncryptServlet.doGet(EncryptServlet.java:26)
javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
當我添加一個main方法將我AES_BC類和測試它獨立，它的作品精絕。我一直在摸索如何解決這個問題。任何幫助將不勝感激。