Beginners are useful: several ways to upload JSP data to action in STRUTS2

First, give the Struts.xml code:

<?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>

The first method of communication:

Import com.opensymphony.xwork2.actionsupport;/** * Mode one: Write the property directly in the action, then write the set, get method * 1. Add attributes to the action, and the property name corresponds to the property name on the JSP *  2. Add the appropriate set method * */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;   Login successful, return to Success page}else{  return forward;   Login failed, return login}}public String tologin () {return SUCCESS;       Go to login Page}}

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

user_tologin.jsp page:

<form action= "User/user_dologin" >    <table>     <tr>      <td> user name </td>      < Td><input type= "text" name= "name" ></td>      <td> </td>     </tr>     <tr>      <td> password </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>

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

The second way of transmitting the parameter:

Import com.opensymphony.xwork2.actionsupport;/*** mode Two: encapsulate the attribute into a DTO, and pass the value with a DTO name. where properties * 1. Add attributes to the action, and the property name corresponds to the property name * 2 on the JSP. Add the appropriate set method **/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 code 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 page:

<form action= "User/user_dologin" >    <table>     <tr>      <td> user name </td>      < Td><input type= "text" name= "User.Name" ></td>      <td> </td>     </tr>     <tr >      <td> password </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>

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

The third way of transmitting the parameter:

Import com.opensymphony.xwork2.actionsupport;import com.opensymphony.xwork2.modeldriven;/*** mode three: Realization modeldriven* Implement Modeldriven interface **/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 page:

<form action= "User/user_dologin" >    <table>     <tr>      <td> user name </td>      < Td><input type= "text" name= "name" ></td>      <td> </td>     </tr>     <tr>      <td> password </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>

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

In addition, we introduce a method of transmitting the parameter via HttpServletRequest request.

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;/*** how to get the request parameter *httpservletrequest request  method **/public class Useraction extends Actionsupport{public String dologin () {//Get Request Object HttpServletRequest request= Servletactioncontext.getrequest (); Gets the Session object//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;}}

In the development of the most common is dtos and implementation of Modeldriven two. To Master Yo! ~

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

Beginners are useful: several ways to upload JSP data to action in STRUTS2