form表单的Action.java文件跟jsp之间数据传递

 

    demo1

      form表单的Action.java文件和jsp之间数据传递

    目标:以注册为模版，描述数据传递过程

1、jsp里的struts2表单（WebContent目录下）
reg.jsp
<s:form name="regForm" action="RegisterAction.action" method="post">
     <s:textfield label="用户名" name="user.userName" title="请输入用户名！"/>
     <s:textfield label="密码" name="user.passWord" title="请输入密码！"/>
      <s:textfield label="年龄" name="user.age"/>
     <s:textfield label="Email" name="user.email"/>
     <s:radio label="性别" name="user.sex" list="#{'nan':'男','nv':'女'}"

value="{'nan'}" />
     <s:checkboxlist label="爱好" name="user.hobby" list="#{'0':'篮球','1':'足

球','2':'排球'}" value="{'0'}"/>
     <s:select label="班级" name="user.cls" list="{'12(移动)','12(技术)','12(测试)'}"

value="{'12(测试)'}"/>
     <s:textarea label="简介" name="user.remark" cols="20" rows="5" />
     <s:submit value="提交"/>
<!--name属性均是javaBean里的一个属性，这样前台输入的数据才会进入到后台的java代码里-->

2、javaBean详情（src目录下，可以新建包）

package com.lin.pojo;

public class User {

 private int userID;
 private String userName;
 private String passWord;
 private String sex;
 private String [] hobby;
 private int age;
 private String cls;
 private String remark;
 private String email;
 public int getUserID() {
  return userID;
 }
 public void setUserID(int userID) {
  this.userID = userID;
 }
 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 getSex() {
  return sex;
 }
 public void setSex(String sex) {
  this.sex = sex;
 }
 public String[] getHobby() {
  return hobby;
 }
 public void setHobby(String[] hobby) {
  this.hobby = hobby;
 }
 public int getAge() {
  return age;
 }
 public void setAge(int age) {
  this.age = age;
 }
 public String getCls() {
  return cls;
 }
 public void setCls(String cls) {
  this.cls = cls;
 }
 public String getRemark() {
  return remark;
 }
 public void setRemark(String remark) {
  this.remark = remark;
 }
 public String getEmail() {
  return email;
 }
 public void setEmail(String email) {
  this.email = email;
 }
｝

3、package com.lin.test;

 
 
import java.util.Map;

import com.lin.pojo.User;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class RegisterAction extends ActionSupport {
 User user; 
 
 public User getUser() {//getset方法是必不可少的
  return user;
 }
 public void setUser(User user) {
  this.user = user;
 }
 public String register(){
   //把注册的信息存入session
  System.out.println("RegisterAction register"+user.getUserName());
  System.out.println("RegisterAction register"+user.getPassWord());
  Map<String ,Object> map2=ActionContext.getContext().getSession();
  map2.put("userName",user.getUserName());
  map2.put("passWord",user.getPassWord());
  return "success";
 }

}

 
4、struts2配置Action

 <action name="RegisterAction" class="com.lin.test.RegisterAction" method="register">
       <result name="success" type="chain">LoginAction1</result>
               <result name="input">/register/reg.jsp</result>
        </action>
<!--如果注册成功后就到struts2里查找LoginAction1对应的java类，如果注册失败，就提示不合

法的输入-->
 
 
5、使用RegisterAction-validation.xml校验输入的信息
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN"
        "http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd">
     <validators>
        <field name="user.userName">
            <field-validator type="requiredstring">
                <message>用户名必须输入</message>
            </field-validator>
            <field-validator type="stringlength">
                <param name="minLength">4</param>
                <param name="maxLength">8</param>
                <message>用户名长度访问4-8</message>
            </field-validator>
        </field>
        <field name="user.passWord">
            <field-validator type="requiredstring">
                <message>密码必须输入!</message>
            </field-validator>
            <field-validator type="stringlength">
                <param name="minLength">6</param>
                <message>密码的长度必须大于${minLength}!</message>
            </field-validator>
        </field>
        <field name="user.age">
            <field-validator type="int">
              <param name="min">1</param>
              <param name="max">130</param>
              <message>年龄必须在${min}-${max}之间!</message>
        </field-validator>    
       </field>
   <field name="user.email">
     <field-validator type="email">
        <message>必须输入正确的email地址!</message>
     </field-validator>    
   </field>
     </validators>  

6、运行效果：成功

p1

p2