struts2+hibernate3.2+spring2.0 Integration Chapter (II)

in the previous article, we have built the struts2+hibernate3.2+spring2.0 development environment successfully, this article we continue to explain the integration process of struts2+hibernate3.2+spring2.0.

Step two: Create a database, a data table, and build a table statement in the MySQL database:

Create Database Mytest;use mytest; CREATE TABLE users (  ID int (one) not NULL,  firstname varchar () is not NULL,  LastName varchar (+) NOT NULL,  a GE Int (one) not NULL,  PRIMARY KEY  (' id ')) engine=innodb DEFAULT Charset=utf8;

Here we need to explain the call relationship between the layers, the action layer-->service layer-->dao layer, the call relationship we configure in spring.

Step three: Establish Hibernate persistent layer access to the data table.

Establish User.java and User.hbm.xml files in the Com.tgb.bean package for mapping the data table users.

User.java

Package Com.tgb.bean;public class User {private Integer id;private string firstname;private string lastname;private int AG E;public Integer getId () {return ID;} public void SetId (Integer id) {this.id = ID;} 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 int getage () {return age;} public void Setage (int.) {this.age = age;}}

User.hbm.xml

<?xml version= "1.0"? ><! DOCTYPE hibernate-mapping Public "-//hibernate/hibernate mapping DTD 3.0//en" "http://hibernate.sourceforge.net/ Hibernate-mapping-3.0.dtd ">Step four: Create an interface and implementation class that operates on the user object. 
To create an interface to manipulate the user object in Com.tgb.dao
Userdao.java
Package Com.tgb.dao;import Java.util.list;import Com.tgb.bean.user;public interface Userdao {public void Saveuser (User User);p ublic void removeuser (user user);p ublic user Finduserbyid (Integer ID);p ublic list<user> findallusers (); public void UpdateUser (user user);
Creating an interface implementation class for manipulating the user object in Com.tgb.dao.impl
Userdaoimpl.java
Package Com.tgb.dao.impl;import Java.util.list;import Org.springframework.orm.hibernate3.support.hibernatedaosupport;import Com.tgb.bean.user;import Com.tgb.dao.userdao;public class Userdaoimpl extends Hibernatedaosupport implements Userdao {@SuppressWarnings (" Unchecked ") public list<user> findallusers () {String hql =" From the user user order by user.id desc "; return (List<use r>) This.gethibernatetemplate (). Find (HQL);} Public user Finduserbyid (Integer ID) {User user = (user) this.gethibernatetemplate (). Get (User.class, id); return User;} public void Removeuser (user user) {this.gethibernatetemplate (). Delete (user); public void Saveuser (user user) {this.gethibernatetemplate (). Save (user); public void UpdateUser (user user) {this.gethibernatetemplate (). Update (user);}}
 Step Five: Create the interface and implementation classes for the service layer
create an interface in Com.tgb.service that calls Userdao
Userservice.java
Package Com.tgb.service;import Java.util.list;import Com.tgb.bean.user;public interface UserService {public List< User> findAll ();p ublic void Save (User user);p ublic void Delete (user user);p ublic user Finduserbyid (Integer ID);p ublic void update (user user);
Creating an interface implementation class that calls Userdao in Com.tgb.service.impl
Userserviceimpl.java
Package Com.tgb.service.impl;import Java.util.list;import Com.tgb.bean.user;import com.tgb.dao.userdao;import Com.tgb.service.userservice;public class Userserviceimpl implements UserService {private Userdao Userdao;public Userdao Getuserdao () {return userdao;} public void Setuserdao (Userdao userdao) {This.userdao = Userdao;} public void Delete (user user) {this.userDao.removeUser (user);} Public list<user> FindAll () {return this.userDao.findAllUsers ();} Public User Finduserbyid (Integer ID) {return This.finduserbyid (ID);} public void Save (user user) {this.userDao.saveUser (user);} public void update (user user) {this.userDao.updateUser (user);}}
Step Six: Create a processing class for Savauser and listuser for the action layer. 
Saveuseraction.java
Package Com.tgb.action.user;import Com.opensymphony.xwork2.actionsupport;import Com.tgb.bean.user;import Com.tgb.service.userservice;public class Saveuseraction extends Actionsupport {private User user;private UserService Userservice;public UserService Getuserservice () {return userservice;} public void Setuserservice (UserService userservice) {this.userservice = UserService;} Public User GetUser () {return user;} public void SetUser (user user) {this.user = user;} @Overridepublic String Execute () throws Exception {This.userService.save (this.user); return SUCCESS;}}
Listuseraction.java
Package Com.tgb.action.user;import Java.util.map;import Com.opensymphony.xwork2.actioncontext;import Com.opensymphony.xwork2.actionsupport;import Com.tgb.service.userservice;public class ListUserAction extends Actionsupport {private UserService userservice;public userservice Getuserservice () {return userservice;} public void Setuserservice (UserService userservice) {this.userservice = UserService;} @Overridepublic String Execute () throws Exception {Map request = (map) actioncontext.getcontext (). Get ("request"); Request.put ("List", Userservice.findall ()); return SUCCESS;}}
Step Seven: Create a save.jsp page for saving the user and a list.jsp page to display the user. 
save.jsp
<%@ page language= "java" import= "java.util.*" pageencoding= "iso-8859-1"%><%@ taglib prefix= "s" uri= "/ Struts-tags "%><%string path = Request.getcontextpath (); String basepath = request.getscheme () + "://" + request.getservername () + ":" + request.getserverport () + path + "/";%&GT;&L t;! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" > list.jsp
<%@ page language= "java" import= "java.util.*" pageencoding= "Utf-8"%><%@ taglib prefix= "s" uri= "/struts-tags" %><%string path = Request.getcontextpath (); String basepath = request.getscheme () + "://" + request.getservername () + ":" + request.getserverport () + path + "/";%&GT;&L t;! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" > In this case, the interfaces and implementation classes between the layers have been created, and the next chapter will explain how to manage dependencies between classes through spring. 
struts2+hibernate3.2+spring2.0 Integration Chapter (II)