form表单的Action.java文件和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