📄 fileioservlet.java
字号:
import java.io.*;import javax.servlet.*;import javax.servlet.http.*;public class FileIOServlet extends HttpServlet { public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println("<body bgcolor=FFFFFF>"); out.println("<h2>Button Clicked</h2>"); String data = request.getParameter("data"); if (data != null && data.length() > 0) { out.println("<STRONG>Text from form:</STRONG>"); out.println(data); } else { out.println("No text entered."); } try {//Code to write to file String outputFileName= System.getProperty("user.home", File.separatorChar + "home" + File.separatorChar + "monicap") + File.separatorChar + "text.txt"; FileWriter fout = new FileWriter(outputFileName); fout.write(data); fout.close();//Code to read from file String inputFileName = System.getProperty("user.home", File.separatorChar + "home" + File.separatorChar + "monicap") + File.separatorChar + "text.txt"; FileReader fin = new FileReader(inputFileName); char c[] = new char[(char)inputFileName.length()]; fin.read(c); String s = new String(c); out.println("<P><STRONG>Text from file:</STRONG>"); out.println(s); fin.close(); } catch(java.io.IOException e) { System.out.println("Cannot access text.txt"); } out.println("<P>Return to <A HREF=../simpleHTML.html>Form</A>"); out.close(); }}⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -