java ejb jsp未报告的异常_Java_Jsp_Ejb_Javabeans

java ejb jsp未报告的异常

java jsp

java ejb jsp未报告的异常,java,jsp,ejb,javabeans,Java,Jsp,Ejb,Javabeans,但是，尝试使用jsp与bean交互时，在运行它时会出现一些错误以下是我在浏览器中看到的错误生成的servlet错误： [javac]C:\Sun\AppServerNew\domains\domain1\generated\jsp\j2ee apps\ConverterApp\war-ic\u war\org\apache\jsp\index\u jsp.java:21：未报告的异常javax.naming.NamingException；必须被抓住或宣布被抛出 [javac]Initial

但是，尝试使用jsp与bean交互时，在运行它时会出现一些错误

以下是我在浏览器中看到的错误

生成的servlet错误： [javac]C:\Sun\AppServerNew\domains\domain1\generated\jsp\j2ee apps\ConverterApp\war-ic\u war\org\apache\jsp\index\u jsp.java:21：未报告的异常javax.naming.NamingException；必须被抓住或宣布被抛出 [javac]InitialContext ic=new InitialContext（）； ^

生成的servlet错误： [javac]C:\Sun\AppServerNew\domains\domain1\generated\jsp\j2ee apps\ConverterApp\war-ic\u war\org\apache\jsp\index\u jsp.java:22：未报告的异常javax.naming.NamingException；必须被抓住或宣布被抛出 [javac]objectobjref=ic.lookup（“java:comp/env/ejb/Converter”）； ^

生成的servlet错误： [javac]C:\Sun\AppServerNew\domains\domain1\generated\jsp\j2ee apps\ConverterApp\war-ic\u war\org\apache\jsp\index\u jsp.java:24：未报告的异常javax.ejb.CreateException；必须被抓住或宣布被抛出 [javac]converter=home.create（）

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>

转炉

package converter;
import java.rmi.RemoteException;
import javax.ejb.*;

public interface ConverterHome extends EJBHome {

Converter create() throws CreateException, RemoteException;



}

转换器

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;


}

在

RemoteException

之后，您需要在ur

.jsp

文件上调用

NamingException

和

CreateException

，将

index.jsp

中的

jspInit（）

方法更改为：

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(NamingException ne){
    }catch (RemoteException ex) {
    }catch(CreateException ce){
    }
}

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(NamingException ne){
    }catch (RemoteException ex) {
    }catch(CreateException ce){
    }
}