Struts2三种传参方式(从jsp页面传到Action)

struts.xml代码:

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"

"http://struts.apache.org/dtds/struts-2.1.dtd">

<struts>

<package name="login" namespace="/user" extends="struts-default">

<action name="*_*" class="com.wepull.struts2.action.{1}Action"

method="{2}">

<result name="success">{1}_{2}.jsp</result>

<result name="input">User_toLogin.jsp</result>

</action>

</package>

</struts>

第一种传参方式:

import com.opensymphony.xwork2.ActionSupport;

/**

* 三种传参方式(从jsp页面传到Action)

*

* 方式一:直接在action中写属性，然后写set、get方法

* 1.在Action里添加属性,属性名要对应jsp上的属性名

* 2.添加相应的set方法

*

*/

public class UserAction extends ActionSupport {

private String name;

private String pass;

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getPass() {

return pass;

}

public void setPass(String pass) {

this.pass = pass;

}

public String doLogin(){

String forward="input";

//System.out.println(name+" "+pass);

if("wepull".equalsIgnoreCase(name)&&"123".equalsIgnoreCase(pass)){

return SUCCESS; //登录成功,返回成功页面

}else{

return forward; //登录失败,返回重新登录

}

}

public String toLogin(){

return SUCCESS; //进入登录页面

}

}

------------------------------------------------------------------------------------------------------------------------------

User_toLogin.jsp页面:

<form action="user/User_doLogin">

<table>

<tr>

<td>用户名</td>

<td><input type="text" name="name"></td>

<td> </td>

</tr>

<tr>

<td>密 码</td>

<td><input type="text" name="pass"></td>

<td> </td>

</tr>

<tr>

<td><input type="submit" value="sure" ></td>

<td><input type="reset" value="reset" ></td>

<td> </td>

</tr>

</table>

</form>

##########################################################################

第二种传参方式:

import com.opensymphony.xwork2.ActionSupport;

/**

* Struts2三种传参方式(从jsp页面传到Action)

*

* 方式二:把属性封装到dto中，传值时以dto名字.其中属性

* 1.在Action里添加属性,属性名要对应jsp上的属性名

* 2.添加相应的set方法

*

*/

public class UserAction extends ActionSupport {

private UserDTO user;

public UserDTO getUser() {

return user;

}

public void setUser(UserDTO user) {

this.user = user;

}

public String doLogin(){

String forward="input";

//System.out.println(user.getName()+" "+user.getPass());

if("wepull".equalsIgnoreCase(user.getName())&&"123".equalsIgnoreCase(user.getPass())){

return SUCCESS;

}else{

return forward;

}

}

public String toLogin(){

return SUCCESS;

}

}

------------------------------------------------------------------------------------------------------------------------------

UserDTO.java代码

public class UserDTO {

private String id;

private String name;

private String pass;

public String getId() {

return id;

}

public void setId(String id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getPass() {

return pass;

}

public void setPass(String pass) {

this.pass = pass;

}

}

------------------------------------------------------------------------------------------------------------------------------

User_toLogin.jsp页面:

<form action="user/User_doLogin">

<table>

<tr>

<td>用户名</td>

<td><input type="text" name="user.name"></td>

<td> </td>

</tr>

<tr>

<td>密 码</td>

<td><input type="text" name="user.pass"></td>

<td> </td>

</tr>

<tr>

<td><input type="submit" value="sure" ></td>

<td><input type="reset" value="reset" ></td>

<td> </td>

</tr>

</table>

</form>

##########################################################################

第三种传参方式:

import com.opensymphony.xwork2.ActionSupport;

import com.opensymphony.xwork2.ModelDriven;

/**

* Struts2三种传参方式(从jsp页面传到Action)

*

* 方式三:实现ModelDriven

* 实现ModelDriven接口

*

*/

public class UserAction extends ActionSupport implements ModelDriven<UserDTO>{

private UserDTO user;

public UserDTO getUser() {

return user;

}

public void setUser(UserDTO user) {

this.user = user;

}

public String doLogin(){

String forward="input";

//System.out.println(user.getName()+" "+user.getPass());

if("wepull".equalsIgnoreCase(user.getName())&&"123".equalsIgnoreCase(user.getPass())){

return SUCCESS;

}else{

return forward;

}

}

public String toLogin(){

return SUCCESS;

}

public UserDTO getModel() {

if(user==null){

user=new UserDTO();

}

return user;

}

}

------------------------------------------------------------------------------------------------------------------------------

User_toLogin.jsp页面:

<form action="user/User_doLogin">

<table>

<tr>

<td>用户名</td>

<td><input type="text" name="name"></td>

<td> </td>

</tr>

<tr>

<td>密 码</td>

<td><input type="text" name="pass"></td>

<td> </td>

</tr>

<tr>

<td><input type="submit" value="sure" ></td>

<td><input type="reset" value="reset" ></td>

<td> </td>

</tr>

</table>

</form>

&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&

另外,在介绍一种通过HttpServletRequest request 传参方式

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpSession;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

import com.opensymphony.xwork2.ModelDriven;

/**

* 获取request参数的方式

*HttpServletRequest request 传参方式

*

*/

public class UserAction extends ActionSupport{

public String doLogin(){

//获取request对象

HttpServletRequest request=ServletActionContext.getRequest();

//获取session对象

//HttpSession session=request.getSession();

String name=request.getParameter("name");

String pass=request.getParameter("pass");

String forward="input";

if("wepull".equalsIgnoreCase(name)&&"123".equalsIgnoreCase(pass)){

return SUCCESS;

}else{

return forward;

}

}

public String toLogin(){

return SUCCESS;

}

}