首页用JSP实现简单的留言板

用JSP实现简单的留言板

时间: 2023-11-27 11:05:06 浏览: 61

Certainly! To implement a simple guestbook using JSP, you can follow these steps: 1. Create a new JSP file in your project and name it "guestbook.jsp". 2. Add a form to the JSP file that includes input fields for name and message: <form action="addMessage.jsp" method="post"> Name: <input type="text" name="name"><br> Message: <textarea name="message"></textarea><br> <input type="submit" value="Submit"> </form> 3. Create a new JSP file named "addMessage.jsp" that handles form submission: <% // Get the input values from the request parameters String name = request.getParameter("name"); String message = request.getParameter("message"); // Store the message in a file or database // For example, you could use a FileWriter: FileWriter writer = new FileWriter("guestbook.txt", true); writer.write(name + ": " + message + "\n"); writer.close(); %> 4. Confirm that messages are being added to the file or database by displaying them on another JSP page. You could name it "viewMessages.jsp": <% // Read the messages from the file or database // For example, you could use a FileReader: FileReader reader = new FileReader("guestbook.txt"); BufferedReader br = new BufferedReader(reader); // Display the messages in HTML format out.println("<html><head><title>Guestbook</title></head><body>"); String line = null; while ((line = br.readLine()) != null) { String[] parts = line.split(": "); String name = parts[0]; String message = parts[1]; out.println("<p><b>" + name + "</b>: " + message + "</p>"); } out.println("</body></html>"); // Close the file br.close(); reader.close(); %> 5. Test your guestbook by visiting "guestbook.jsp" and submitting messages. Then visit "viewMessages.jsp" to see the messages that have been posted. I hope this helps! Let me know if you have any other questions.

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