register.java//用於產生javabean
package info.haowei.javabean; 2 3 import java.util.HashMap; 4 import java.util.Map; 5 6 public class Register { 7 8 private String name; 9 private String age;10 private String email;11 private Map<String,String>errors = null;12 13 14 15 public Register(){16 this.name= "";17 this.age="";18 this.email="";19 this.errors = new HashMap<String, String>();20 }21 public String getName() {22 return name;23 }24 public void setName(String name) {25 this.name = name;26 }27 public String getAge() {28 return age;29 }30 public void setAge(String age) {31 this.age = age;32 }33 public String getEmail() {34 return email;35 }36 public void setEmail(String email) {37 this.email = email;38 }39 40 public boolean isValidate(){41 boolean flag = true;42 if(!this.name.matches("\\w{6,15}")){43 flag = false;44 this.name = "";45 this.errors.put("errorname", "使用者名稱是6-15位的數字");46 }47 if(!this.email.matches("\\w+@\\w+\\.\\w+\\.?\\w*")){48 flag = false;49 this.email = "";50 this.errors.put("erroremail", "email地址不合法");51 }52 if(!this.age.matches("\\d+")){53 flag = false;54 this.age = "";55 this.errors.put("errorage", "age輸入不合法");56 }57 58 return flag;59 }60 61 public String getErrorMsg(String key){62 String value = this.errors.get(key);63 if(value==null){64 return "";65 }66 return value;67 }68 69 70 71 }
//check.jsp用於判斷輸入是否正確
<%@page contentType="text/html" pageEncoding="GBK"%><html> <head> </head> <% request.setCharacterEncoding("GBK"); //解決亂碼問題 %> <jsp:useBean id="reg" scope="request" class="info.haowei.javabean.Register"/> <jsp:setProperty property="*" name="reg"/> <body> <% if(reg.isValidate()){ %> <jsp:forward page="success.jsp"></jsp:forward> <% }else{ %> <jsp:forward page="index.jsp"></jsp:forward> <%} %> </body></html>
//index.jsp 利用表單輸入並通過javabean傳遞資訊
1 <%@page contentType="text/html" pageEncoding="GBK"%> 2 <html> 3 <head> 4 </head> 5 <% request.setCharacterEncoding("GBK"); //解決亂碼問題 %> 6 <jsp:useBean id="reg" scope="request" class="info.haowei.javabean.Register"/> 7 8 <body> 9 <form action="check.jsp" method="post">10 使用者名稱:<input type="text" name="name" value="<jsp:getProperty name="reg" property="name"/>"/>11 <%=reg.getErrorMsg("errorname") %><br>12 年 齡:<input type="text" name="age" value="<jsp:getProperty name="reg" property="age"/>"/>13 <%=reg.getErrorMsg("errorage") %><br>14 email: <input type="text" name="email" value="<jsp:getProperty name="reg" property="email"/>"/>15 <%=reg.getErrorMsg("erroremail") %><br>16 17 <input type="submit" value = "submit">18 <input type="reset" value = "reset">19 </form>20 </body>21 </html>
// 註冊成功介面
1 <%@page contentType="text/html" pageEncoding="GBK"%> 2 <html> 3 <head> 4 </head> 5 <% request.setCharacterEncoding("GBK"); //解決亂碼問題%> 6 <jsp:useBean id="reg" scope="request" class="info.haowei.javabean.Register"/> 7 8 <body> 9 10 使用者名稱:<jsp:getProperty name="reg" property="name"/><br>11 12 年 齡:<jsp:getProperty name="reg" property="age"/><br>13 14 email: <jsp:getProperty name="reg" property="email"/><br>15 16 17 18 </body>19 </html>Start building with 50+ products and up to 12 months usage for Elastic Compute Service
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