2.User类为一个标准的JavaBean类,请设计一个程序,实现用户信息录入功能。要求如下:(1)直接生成User对象。(2)使用<jsp:setProperty>接收参数。(3)使用<jsp:
时间: 2024-05-07 17:19:06 浏览: 195
useBean>创建User对象。(4)使用<jsp:getProperty>输出User对象的属性值。
以下是实现用户信息录入功能的代码示例:
1. User.java
```java
public class User {
private String username;
private String password;
private String email;
public User() {}
public User(String username, String password, String email) {
this.username = username;
this.password = password;
this.email = email;
}
// getters and setters
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
```
2. input.jsp
```jsp
<html>
<head>
<title>User Info Input</title>
</head>
<body>
<jsp:useBean id="user" class="User" scope="request"/>
<jsp:setProperty name="user" property="username" param="username"/>
<jsp:setProperty name="user" property="password" param="password"/>
<jsp:setProperty name="user" property="email" param="email"/>
<h2>User Info Input</h2>
<form method="post" action="output.jsp">
<label for="username">Username:</label>
<input type="text" name="username" id="username"><br>
<label for="password">Password:</label>
<input type="password" name="password" id="password"><br>
<label for="email">Email:</label>
<input type="email" name="email" id="email"><br>
<input type="submit" value="Submit">
</form>
</body>
</html>
```
3. output.jsp
```jsp
<html>
<head>
<title>User Info Output</title>
</head>
<body>
<jsp:useBean id="user" class="User" scope="request"/>
<h2>User Info Output</h2>
<p>Username: <jsp:getProperty name="user" property="username"/></p>
<p>Password: <jsp:getProperty name="user" property="password"/></p>
<p>Email: <jsp:getProperty name="user" property="email"/></p>
</body>
</html>
```
在上面的示例中,我们使用了<jsp:useBean>标签创建了一个名为user的User对象,并将其作用域设置为request。然后,使用<jsp:setProperty>标签从输入表单中接收参数,并将其设置为User对象的属性值。最后,在output.jsp页面中,使用<jsp:getProperty>标签输出User对象的属性值。
注意:这只是示例代码,实际应用中需要进行参数校验和异常处理。
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