Java网页执行脚本

Question

I am new to Java, please help. 我是Java新手，请帮忙。

I wrote html page index.jsp that suppose to get value from user and execute a script with that value. 我写了html页面index.jsp，该页面想从用户那里获取价值并执行具有该价值的脚本。

The code is- 该代码是-

 <body> <form name="Execute-Java" action=""> <p> <label for="s">IP- </label> <input type="text" name="server" value="xxxx"> </p><br> <input type="submit" value="Execute java" name="Submit"/> </form> </body>

Also wrote a java code, compiled it using javac and ran it using java command-line successfully. 还编写了一个Java代码，使用javac进行了编译，并使用Java命令行成功运行了该代码。

public class SendEmail {
  public static void main(String [] args){
  String from = "from@from.com";
  String to = "to@to.com";
  String subject = "Test Subject";
  String body_email = "Body test";
  String host = "x.x.x.x";

 //Get the session object
  Properties properties = System.getProperties();
  properties.setProperty("mail.smtp.host", host);
  Session session = Session.getDefaultInstance(properties);

 //compose the message
  try{
     MimeMessage message = new MimeMessage(session);
     message.setFrom(new InternetAddress(from));
     message.addRecipient(Message.RecipientType.TO,new InternetAddress(to));
     message.setSubject(subject);
     message.setText(body_email);

     // Send message
     Transport.send(message);
     System.out.println("message sent successfully....");

  }catch (MessagingException mex) {mex.printStackTrace();}

} } }}

Now i would like the index.jsp page to somehow execute the java code when user click submit using the host value given by the user. 现在，我希望index.jsp页面在用户使用用户提供的主机值单击Submit时以某种方式执行Java代码。

Can it be done and what should i do? 能做到吗，我该怎么办？

Answer 1

If you want to do some calculations with user input from html (jsp) on server-side you should use Application-Layer protocol from OSI (HTTP, HTTPS fe) . 如果要使用服务器端html（jsp）的用户输入进行一些计算，则应使用OSI的Application-Layer协议（HTTP，HTTPS fe） 。

Approach - using Ajax send http request to Server (java-servlet resource, deployed on Tomcat or another servlet container). 方法-使用Ajax将http请求发送到服务器（java-servlet资源，部署在Tomcat或另一个servlet容器上）。 Or you may use default behavior of form.submit() . 或者，您可以使用form.submit（）的默认行为。

Make SendEmail class an Servlet extending it from HTTPServlet, implement doPost method(or doGet), set address for servlet. 使SendEmail类成为从HTTPServlet扩展它的Servlet，实现doPost方法（或doGet），设置Servlet的地址。

Set action and method attributes for form. 设置表单的操作和方法属性。

Submit form. 提交表格。

Java网页执行脚本

问题描述

1 个解决方案

解决方案1
0 2016-05-30 12:40:53

Java网页执行脚本

问题描述

1 个解决方案

解决方案1 0 2016-05-30 12:40:53

解决方案1
0 2016-05-30 12:40:53