Hibernate+Maven+Struts2——实现增删查改CURD的步骤详解
首先，让我们来看一下我们要实现的效果图
接下来，上博主的代码架构
接下来直接进入主题：
1.创建数据库的表
2.创建项目
用Eclipse创建一个Maven Project项目
3.导入hibernate相关的架包到项目
pom.xml
4.0.0
Maven_Hibenate01
Maven_Hibenate01
war
0.0.1-SNAPSHOT
Maven_Hibenate01 Maven Webapp
http://maven.apache.org
-Dfile.encoding=UTF-8
junit
junit
4.12
test
javax.servlet
javax.servlet-api
3.1.0
provided
org.hibernate
hibernate-core
5.2.10.Final
org.apache.struts
struts2-core
2.5.12
org.apache.struts
struts2-convention-plugin
2.5.12
net.sf.json-lib
json-lib
2.4
jdk15
mysql
mysql-connector-java
5.1.18
Maven_Hibenate01
4.配置hibernate.cfg.xml
root
123
jdbc:mysql://localhost:3306/test?characterEncoding=utf8
com.mysql.jdbc.Driver
5.创建实体类User.java和映射文件 User.hbm.xml（映射文件和实体对象必须在同一个包下）
package com.yhl.entity;
public class User {
private int u_id;//编号
private String u_name;//用户名
private String u_sex;//性别
public User() {
}
public User(int u_id) {
this.u_id = u_id;
}
public User(String u_name, String u_sex) {
super();
this.u_name = u_name;
this.u_sex = u_sex;
}
public User(int u_id, String u_name, String u_sex) {
this.u_id = u_id;
this.u_name = u_name;
this.u_sex = u_sex;
}
public int getU_id() {
return u_id;
}
public void setU_id(int u_id) {
this.u_id = u_id;
}
public String getU_name() {
return u_name;
}
public void setU_name(String u_name) {
this.u_name = u_name;
}
public String getU_sex() {
return u_sex;
}
public void setU_sex(String u_sex) {
this.u_sex = u_sex;
}
}
6.写Dao层
接口UserDao.java
package com.yhl.dao;
import java.util.List;
import com.yhl.entity.User;
public interface UserDao {
/**
* 查询所有
*/
public List getAll();
/**
* 添加一行信息
*/
public int AddUser(User user);
/**
* 根据ID删除一行信息
*/
public int DeleteUser(int u_id);
/**
* 修改用户信息
*/
public int UpadteUser(User user);
}
package com.yhl.dao;
import java.io.Serializable;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import com.yhl.entity.User;
public class UserDaoImp implements UserDao{
private Configuration configuration;//1.实例化配置对象 加载映射文件hibernate.cfg.xml
private SessionFactory sessionFactory;//2.创建会话工厂
private Session session;//3.创建会话
private Transaction transaction;//4.开启事务
/**
* 查看所有
*/
public List getAll() {
configuration = new Configuration().configure();
sessionFactory = configuration.buildSessionFactory();
session = sessionFactory.openSession();
transaction = session.beginTransaction();
//查询所有
List list=session.createCriteria(User.class).list();
//提交事物
transaction.commit();
session.close();
sessionFactory.close();
return list;
}
/**
* 添加
*/
public int AddUser(User user) {
configuration = new Configuration().configure();
sessionFactory = configuration.buildSessionFactory();
session = sessionFactory.openSession();
transaction = session.beginTransaction();
//添加一行信息
User users=new User(user.getU_name(), user.getU_sex());
Serializable Serializable = session.save(users);
int a=(Integer) Serializable;
System.out.println(a);
//提交事物
transaction.commit();
session.close();
sessionFactory.close();
return 0;
}
/**
* 删除
*/
public int DeleteUser(int uid) {
configuration = new Configuration().configure();
sessionFactory = configuration.buildSessionFactory();
session = sessionFactory.openSession();
transaction = session.beginTransaction();
//删除一行信息
User user=new User();
user.setU_id(uid);
session.delete(user);
//提交事物
transaction.commit();
session.close();
sessionFactory.close();
return 0;
}
/**
* 修改
*/
public int UpadteUser(User user) {
configuration = new Configuration().configure();
sessionFactory = configuration.buildSessionFactory();
session = sessionFactory.openSession();
transaction = session.beginTransaction();
//修改
User users=session.get(User.class, user.getU_id());
users.setU_name(user.getU_name());
users.setU_sex(user.getU_sex());
session.update(users);
//提交事物
transaction.commit();
session.close();
sessionFactory.close();
return 0;
}
}
7.写Action
package com.yhl.action;
import java.io.PrintWriter;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.yhl.dao.UserDao;
import com.yhl.dao.UserDaoImp;
import net.sf.json.JSONArray;
public class GetAllUserAtion extends ActionSupport{
@Override
public String execute(){
System.out.println("查看所有的Ation进来了。。。。。。");
UserDao userDao=new UserDaoImp();
try {
HttpServletResponse resp = ServletActionContext.getResponse();
resp.setContentType("text/html;charset=UTF-8");
JSONArray jsonArray=JSONArray.fromObject(userDao.getAll());
PrintWriter pw;
pw = resp.getWriter();
pw.write(jsonArray.toString());
pw.close();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
package com.yhl.action;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.yhl.dao.UserDao;
import com.yhl.dao.UserDaoImp;
import com.yhl.entity.User;
public class AddAction extends ActionSupport{
HttpServletResponse resp=ServletActionContext.getResponse();
HttpServletRequest req=ServletActionContext.getRequest();
UserDao dao=new UserDaoImp();
private int u_id;
private String u_name;
private String u_sex;
@Override
public String execute() throws Exception {
resp.setContentType("text/html; charset=UTF-8");
req.setCharacterEncoding("UTF-8");
dao.AddUser(new User(u_id, u_name, u_sex));
return null;
}
public int getU_id() {
return u_id;
}
public void setU_id(int u_id) {
this.u_id = u_id;
}
public String getU_name() {
return u_name;
}
public void setU_name(String u_name) {
this.u_name = u_name;
}
public String getU_sex() {
return u_sex;
}
public void setU_sex(String u_sex) {
this.u_sex = u_sex;
}
}
package com.yhl.action;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.yhl.dao.UserDao;
import com.yhl.dao.UserDaoImp;
public class DeleteAction extends ActionSupport{
HttpServletResponse resp=ServletActionContext.getResponse();
HttpServletRequest req=ServletActionContext.getRequest();
UserDao dao=new UserDaoImp();
private int u_id;
@Override
public String execute() throws Exception {
System.out.println("删除的Action进来了。。。。。。");
resp.setContentType("text/html; charset=UTF-8");
req.setCharacterEncoding("UTF-8");
System.out.println(u_id);
dao.DeleteUser(u_id);
return null;
}
public int getU_id() {
return u_id;
}
public void setU_id(int u_id) {
this.u_id = u_id;
}
}
package com.yhl.action;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.yhl.dao.UserDao;
import com.yhl.dao.UserDaoImp;
import com.yhl.entity.User;
public class UpdateAction extends ActionSupport {
HttpServletResponse resp=ServletActionContext.getResponse();
HttpServletRequest req=ServletActionContext.getRequest();
UserDao dao=new UserDaoImp();
private int u_id;
private String u_name;
private String u_sex;
@Override
public String execute() throws Exception {
System.out.println("修改的Action进来了。。。。。。");
resp.setContentType("text/html; charset=UTF-8");
req.setCharacterEncoding("UTF-8");
dao.UpadteUser(new User(u_id, u_name, u_sex));
return null;
}
public int getU_id() {
return u_id;
}
public void setU_id(int u_id) {
this.u_id = u_id;
}
public String getU_name() {
return u_name;
}
public void setU_name(String u_name) {
this.u_name = u_name;
}
public String getU_sex() {
return u_sex;
}
public void setU_sex(String u_sex) {
this.u_sex = u_sex;
}
}
8.写struts.xml配置
9.配置web.xml
Archetype Created Web Application
struts2
org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter
struts2
*.action
10.写jsp页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
Hibenate+Struts2+Maven+EasyUI实现增删查改
附：EasyUI下载地址