我正在创建一个网页，我想使用gmail smtp发送邮件。我尝试使用jsp页面，但我没有工作，所以我在核心java中创建了一个代码，它成功发送电子邮件。现在我想使用这个java我的 jsp 页面中的代码。我尝试了但出现错误
java代码:
import java.util.Properties;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class SSL {
public static void main(String [] args){
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.socketFactory.port", "465");
props.put("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "465");
Session session = Session.getDefaultInstance(props,
new javax.mail.Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication("prakash.d2222","password");
}
});
try {
Message message = new MimeMessage(session);
message.setFrom(new InternetAddress("from@no-spam.com"));
message.setRecipients(Message.RecipientType.TO,
InternetAddress.parse("prakash_d22@rediffmail.com"));
message.setSubject("hi");
message.setText("12345" +
"\n\n No spam to my email, please!");
Transport.send(message);
System.out.println("Done");
} catch (MessagingException e) {
throw new RuntimeException(e);
}
}
}
我的jsp代码
<%@ page contentType="text/html; charset=iso-8859-1" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<body>
<jsp:useBean id="link" scope="application" class = "SSL.class" />
<jsp:setProperty name="link" property="*" />
</body>
</html>
显示的错误是
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: /pizza/page/ssl.jsp(7,4) The value for the useBean class attribute SSL.class is invalid.
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:148)
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1233)
org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1178)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2411)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2417)
org.apache.jasper.compiler.Node$Root.accept(Node.java:495)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2361)
org.apache.jasper.compiler.Generator.generate(Generator.java:3459)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:231)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:354)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:334)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:321)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:328)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717
所以请帮助我，因为我是 jsp 新手。
最佳答案
考虑以下建议:
-
.class文件必须放在WEB-INF/classes下 - 永远不要在默认包中创建类。
package com.me;
public class SSL {
public void show(){
///
}
}
我看不到任何 getter/setter类中的方法，因此无需使用 <jsp:setProperty/> jsp 页面中的操作，并且不包含 class 的扩展名属性。
<jsp:useBean id="link" scope="application" class="com.me.SSL" />
编辑:
如果您不使用IDE (netbeans/eclipse)，那么您必须在/tomcat x.x/webapps/下创建文件夹结构.
/webapp <--- This is known as `context` folder
|
|-------/WEB-INF
| |
| |-----------/classes
| | |---/com/me/SSL.class
| |
| |-----------/lib
| mail.jar
| sample.jsp
您必须在JSP页面中调用show()方法:
<jsp:useBean id="link" scope="application" class="com.me.SSL" />
<%
link.show();
%>
或者
<%
com.me.SSL obj=new com.me.SSL();
obj.show();
%>
关于java - 在jsp中调用java文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/12016515/