archieve: test javabean

2025-04-28 22:39:56 +08:00
parent b8d7992563
commit 4b0f6bbe9b
16 changed files with 803 additions and 0 deletions
@@ -0,0 +1,28 @@
+package com.msksbr.test.javabean;
+
+import java.io.*;
+
+import jakarta.servlet.http.*;
+import jakarta.servlet.annotation.*;
+
+@WebServlet(name = "helloServlet", value = "/hello-servlet")
+public class HelloServlet extends HttpServlet {
+    private String message;
+
+    public void init() {
+        message = "Hello World!";
+    }
+
+    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
+        response.setContentType("text/html");
+
+        // Hello
+        PrintWriter out = response.getWriter();
+        out.println("<html><body>");
+        out.println("<h1>" + message + "</h1>");
+        out.println("</body></html>");
+    }
+
+    public void destroy() {
+    }
+}
@@ -0,0 +1,61 @@
+package com.msksbr.test.javabean;
+
+public class Username {
+    String reg = "[a-zA-Z]";
+    String regx = "[a-zA-Z0-9]";
+    String username;
+    Boolean isval;
+    String tip;
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public Boolean getIsval() {
+        return isval;
+    }
+
+    public void setIsval(Boolean isval) {
+        this.isval = isval;
+    }
+
+    public void validate() {
+        this.isval = isValid();
+    }
+
+    public String getTip() {
+        return tip;
+    }
+
+    public void setTip(String tip) {
+        this.tip = tip;
+    }
+
+    public boolean isValid() {
+        if (username == null || username.isEmpty()) {
+            tip = "用户名不能为空";
+            isval = false;
+        }
+        String name = getUsername();
+        String firstname = String.valueOf(name.charAt(0));
+        if (firstname.matches(reg)) {
+            // 修复验证逻辑：检查所有字符是否合法
+            for (int i = 1; i < name.length(); i++) {
+                String c = String.valueOf(name.charAt(i));
+                if (!c.matches(regx)) {  // 原逻辑这里判断错误
+                    setTip("用户姓名错误，只能由字母、数字组成！");
+                    return false;
+                }
+            }
+            setTip("用户格式正确");
+            return true;
+        } else {
+            setTip("用户姓名错误，首字符必须为字母！");
+            return false;
+        }
+    }
+}
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_6_0.xsd"
+         version="6.0">
+</web-app>
@@ -0,0 +1,13 @@
+<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
+<!DOCTYPE html>
+<html>
+<head>
+    <title>JSP - Hello World</title>
+</head>
+<body>
+<h1><%= "Hello World!" %>
+</h1>
+<br/>
+<a href="hello-servlet">Hello Servlet</a>
+</body>
+</html>
@@ -0,0 +1,26 @@
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<jsp:useBean id="username" class="com.msksbr.test.javabean.Username" scope="page">
+    <jsp:setProperty name="username" property="*"/>
+    <% username.validate(); %>
+</jsp:useBean>
+<html>
+<head>
+    <title>验证反馈页面</title>
+</head>
+<body>
+<ul style="font-size: 20px;">
+    <li>
+        输入的用户名为：
+        <jsp:getProperty name="username" property="username"/>
+    </li>
+    <li>
+        &nbsp;&nbsp;&nbsp;是否有效：
+        <jsp:getProperty name="username" property="isval"/>
+    </li>
+    <li>
+        &nbsp;&nbsp;&nbsp;提示信息：
+        <jsp:getProperty name="username" property="tip"/>
+    </li>
+</ul>
+</body>
+</html>
@@ -0,0 +1,18 @@
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<html>
+<head>
+    <title>用户输入用户名页面</title>
+</head>
+<body>
+<form action="judge.jsp" method="post" style="font-size: 20px;">
+    <li>
+        请输入用户名：
+        <input type="text" name="username">
+        只能由字母、数字或者下划线组成
+    </li>
+    <li>
+        <input type="submit" name="submit" value="验证">
+    </li>
+</form>
+</body>
+</html>