我是一個努力學習我能做些什麼JSP的人。我使用Eclipse作爲我的IDE,並遇到了一個小問題,我希望有人能幫助我。我有以下的文件創建一個動態Web項目:如何使用Eclipse編譯和運行JSP Beans項目
的index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Get Name</title>
</head>
<body>
<form action="saveName.jsp" method="post">
What is your name?
<input type="text" name="username" size="20">
<br>
What is your email address?
<input type="text" name="email" size="20">
<br>
What is your age?
<input type="text" name="age" size="4">
<br>
<input type="submit">
</form>
</body>
</html>
NextPage.jsp上
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<jsp:useBean id="user" class="user.UserData" scope="session"></jsp:useBean>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Next Page</title>
</head>
<body>
You entered
<br>
Name: <%=user.getUserName()%>
<br>
Email: <%=user.getUserEmail()%>
<br>
Age: <%=user.getUserAge()%>
</body>
</html>
saveName.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<jsp:useBean id="user" class="user.UserData" scope="session"></jsp:useBean>
<jsp:setProperty property="*" name="user" />
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Save Name</title>
</head>
<body>
<a href="nextPage.jsp">Continue</a>
</body>
</html>
userData.java
package user;
public class UserData {
String userName;
String userEmail;
String userAge;
/**
* @return the userName
*/
public String getUserName() {
return userName;
}
/**
* @param userName
* the userName to set
*/
public void setUserName(String userName) {
this.userName = userName;
}
/**
* @return the userEmail
*/
public String getUserEmail() {
return userEmail;
}
/**
* @param userEmail
* the userEmail to set
*/
public void setUserEmail(String userEmail) {
this.userEmail = userEmail;
}
/**
* @return the userAge
*/
public String getUserAge() {
return userAge;
}
/**
* @param userAge
* the userAge to set
*/
public void setUserAge(String userAge) {
this.userAge = userAge;
}
}
這個應用程序運行得很好,除了我的nextPage.jsp對所有值都爲null。我知道這是因爲userData.java沒有被調用。
下面是如何設置項目的html和jsp文件在WebContent文件夾中。 userData.java位於用戶包下的Java Resources文件夾中。我很確定userData的類應該被複制到WEB-INF文件夾中,但它不是,即使我自己將它放在那裏,項目仍然無法正常運行。有人可以告訴我如何在Eclipse中進行設置,以便它能夠正確運行,並且我可以使用JSP進行更多的實驗。
你的代碼似乎很好。那麼你的問題是什麼? –