Struct2（五）处理表单

简介：

1.表单的提交

表单和对应的Java模型的类

在此次的例子中，我们将会模仿一个用户提交表单的动作，具体提交表单做什么，不关心，我们需要知道 first last Name，Email address ，age。

为了封装这个数据，我们提供一个简单的java Class 来存储这个信息。

Person.java

package org.apache.struts.helloworld.model;
public class Person
{
    private String firstName;
    private String lastName;
    private String email;
    private int age;
 
    public String getFirstName()
    {
        return firstName;
    }
 
    public void setFirstName(String firstName)
    {
        this.firstName = firstName;
    }
 
    public String getLastName()
    {
        return lastName;
    }
 
    public void setLastName(String lastName)
    {
        this.lastName = lastName;
    }
 
    public String getEmail()
    {
        return email;
    }
 
    public void setEmail(String email)
    {
        this.email = email;
    }
 
    public int getAge()
    {
        return age;
    }
 
    public void setAge( int age)
    {
        this.age = age;
    }
 
 
    public String toString()
    {
        return "First Name: " + getFirstName() + " Last Name:  " + getLastName() + 
        " Email:      " + getEmail() + " Age:      " + getAge() ;
    }
}

表单的展示：

register.jsp

<?xml version="1.0" encoding="ISO-8859-1" ?>

<%@ taglib prefix="s" uri="/struts-tags" %>

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Register</title>
</head>
<body>
<h3>Register for a prize by completing this form.</h3>
<s:form action="register">
    <s:textfield name="personBean.firstName" label="First name" />
    <s:textfield name="personBean.lastName" label="Last name" />
    <s:textfield name="personBean.email"  label ="Email"/>  
    <s:textfield name="personBean.age"  label="Age"  />
<s:submit/>
</s:form> 
</body>
</html>

我们使用了标签，则需要添加taglib 命令

表单中定义了Action register，我们需要在structs.xml文件中生命。

<action name="register" class="org.apache.struts.register.action.Register" method="execute">
<result name="success">/ThankYou.jsp</result>
</action>

增加注册动作对应的Action

package org.apache.struts.register.action;

import org.apache.struts.model.Person;

import com.opensymphony.xwork2.ActionSupport;

public class Register extends ActionSupport {

    private static final long serialVersionUID = 1L;

    private Person personBean;

    @Override
    public String execute() throws Exception {

        // call Service class to store personBean's state in database

        return SUCCESS;

    }

    public Person getPersonBean() {

        return personBean;

    }

    public void setPersonBean(Person person) {

        personBean = person;

    }

}

定义展示的ThankYou.jsp页面：

<?xml version="1.0" encoding="ISO-8859-1" ?>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"     pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Registration Successful</title>
</head>
<body>
<h3>Thank you for registering for a prize.</h3>   <p>Your registration information: <s:property value="personBean" /> </p>   <p><a href="<s:url action='index' />" >Return to home page</a>.</p>   </body>
</html>

在index.jsp中添加：

<p><a href="register.jsp">Please register</a> for our prize drawing.</p>

能够定位到register.jsp页面。

测试：

1. index.action

2. 点击注册

3.提交