嘗試使用jsp與bean進行交互，但是在運行時會出現一些錯誤。java ejb jsp未報告異常
下面是我在瀏覽器
生成的servlet錯誤出現的錯誤： [javac的] C：\太陽\ AppServerNew \域\ DOMAIN1 \生成的\ JSP \ J2EE的APPS \ ConverterApp \戰爭ic_war \ org \ apache \ jsp \ index_jsp.java：21：未報告的異常javax.naming.NamingException;必須被捕獲或聲明爲拋出 [javac] InitialContext ic = new InitialContext（）; ^
生成的servlet錯誤： [javac的] C：\太陽\ AppServerNew \域\ domain1的\生成\ JSP \ J2EE-APPS \ ConverterApp \戰爭ic_war \組織\阿帕奇\ JSP \ index_jsp.java：22 ：未報告的異常javax.naming.NamingException;必須被捕獲或聲明爲拋出 [javac] Object objRef = ic.lookup（「java：comp/env/ejb/Converter」）; ^
生成的servlet錯誤： [javac的] C：\太陽\ AppServerNew \域\ domain1的\生成\ JSP \ J2EE-APPS \ ConverterApp \戰爭ic_war \組織\阿帕奇\ JSP \ index_jsp.java：24 ：未報告的異常javax.ejb.CreateException;必須被捕獲或聲明爲拋出 [javac] converter = home.create（）;
的index.jsp
<%@ page import="converter.Converter, converter.ConverterHome, java.math.*, javax.ejb.*, javax.naming.*,
javax.rmi.PortableRemoteObject, java.rmi.RemoteException" %>
<%!
private Converter converter = null;
public void jspInit() {
try {
InitialContext ic = new InitialContext();
Object objRef = ic.lookup("java:comp/env/ejb/Converter");
ConverterHome home = (ConverterHome)PortableRemoteObject.narrow(objRef, ConverterHome.class);
converter = home.create();
} catch (RemoteException ex) {
}
}
%>
<html>
<head>
<title>Converter</title>
</head>
<body bgcolor="white">
<h1><center>Converter</center></h1>
<hr>
<p>Enter an amount to convert:</p>
<form method="get">
<input type="text" name="amount" size="25">
<br>
<p>
<input type="submit" value="Submit">
<input type="reset" value="Reset">
</form>
<%
String amount = request.getParameter("amount");
if (amount != null && amount.length() > 0) {
BigDecimal d = new BigDecimal (amount);
%>
<p><%= amount %> dollars are
<%= converter.dollarToYen(d) %> Yen.
<p><%= amount %> Yen are
<%= converter.yenToEuro(d) %> Euro.
<%
}
%>
</body>
</html>
ConverterBean
package converter;
import javax.ejb.*;
import java.math.*;
import java.rmi.*;
public class ConverterBean implements SessionBean {
BigDecimal yenRate = new BigDecimal("122.00");
BigDecimal euroRate = new BigDecimal("0.0077");
public BigDecimal dollarToYen(BigDecimal dollars) {
BigDecimal result = dollars.multiply(yenRate);
return result.setScale(2, BigDecimal.ROUND_UP);
}
public BigDecimal yenToEuro(BigDecimal yen) {
BigDecimal result = yen.multiply(euroRate);
return result.setScale(2, BigDecimal.ROUND_UP);
}
public void ejbActivate(){}
public void ejbPassivate(){}
public void ejbRemove(){}
public void ejbCreate(){}
public void setSessionContext(SessionContext ctx){}
}
ConverterHome
package converter;
import java.rmi.RemoteException;
import javax.ejb.*;
public interface ConverterHome extends EJBHome {
Converter create() throws CreateException, RemoteException;
}
轉換
package converter;
import java.rmi.RemoteException;
import javax.ejb.*;
import java.math.*;
public interface Converter extends EJBObject{
public BigDecimal dollarToYen(BigDecimal dollars)
throws RemoteException;
public BigDecimal yenToEuro(BigDecimal dollars)
throws RemoteException;
}