Hibernate+Maven+Struts2——实现增删查改CURD的步骤详解

来源：互联网发布：人人商城分销源码编辑：程序博客网时间：2024/05/01 13:47

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

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>Maven_Hibenate01</groupId>  <artifactId>Maven_Hibenate01</artifactId>  <packaging>war</packaging>  <version>0.0.1-SNAPSHOT</version>  <name>Maven_Hibenate01 Maven Webapp</name>  <url>http://maven.apache.org</url>    <properties>  <argLine>-Dfile.encoding=UTF-8</argLine>  </properties>    <dependencies>    <dependency>         <groupId>junit</groupId>         <artifactId>junit</artifactId>         <version>4.12</version>         <scope>test</scope>    </dependency>    <!-- 加入Servlet依赖 -->    <dependency>    <groupId>javax.servlet</groupId>    <artifactId>javax.servlet-api</artifactId>    <version>3.1.0</version>    <scope>provided</scope></dependency><!-- 加入hibernate依赖 --><dependency>   <groupId>org.hibernate</groupId>   <artifactId>hibernate-core</artifactId>   <version>5.2.10.Final</version></dependency><!-- 加入Struts2依赖 --><dependency>    <groupId>org.apache.struts</groupId>    <artifactId>struts2-core</artifactId>    <version>2.5.12</version></dependency><dependency>    <groupId>org.apache.struts</groupId>    <artifactId>struts2-convention-plugin</artifactId>    <version>2.5.12</version></dependency> <!--json-lib依赖-->  <dependency>      <groupId>net.sf.json-lib</groupId>      <artifactId>json-lib</artifactId>      <version>2.4</version>      <classifier>jdk15</classifier>  </dependency><!-- 加入MySQL依赖 --><dependency>   <groupId>mysql</groupId>   <artifactId>mysql-connector-java</artifactId>   <version>5.1.18</version></dependency>          </dependencies>    <build>    <finalName>Maven_Hibenate01</finalName>  </build></project>

4.配置hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE hibernate-configuration PUBLIC"-//Hibernate/Hibernate Configuration DTD 3.0//EN""http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"><hibernate-configuration>    <session-factory>            <!--  配置数据库的连接信息 -->            <property name="connection.username">root</property>            <property name="connection.password">123</property>            <property name="connection.url">jdbc:mysql://localhost:3306/test?characterEncoding=utf8</property>            <property name="connection.driver_class">com.mysql.jdbc.Driver</property>                        <!-- 关联映射文件 -->            <mapping resource="com/yhl/entity/User.hbm.xml"/>        </session-factory></hibernate-configuration>

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<User> 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);}

实现类UserDaoImp.java

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.xmlprivate 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<User> getAll() { configuration = new Configuration().configure(); sessionFactory = configuration.buildSessionFactory(); session = sessionFactory.openSession(); transaction = session.beginTransaction(); //查询所有     List<User> 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{@Overridepublic 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

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"    "http://struts.apache.org/dtds/struts-2.0.dtd"><struts>      <!-- 打开方法的动态调用 -->   <constant name="struts.enable.DynamicMethodInvocation" value="true" />     <package name="mupackage" namespace="/" extends="struts-default">       <action name="selectuser" class="com.yhl.action.GetAllUserAtion"></action>       <action name="adduser" class="com.yhl.action.AddAction"></action>       <action name="deltetuser" class="com.yhl.action.DeleteAction"></action>       <action name="updateuser" class="com.yhl.action.UpdateAction"></action>     </package></struts>

9.配置web.xml

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" ><web-app>  <display-name>Archetype Created Web Application</display-name>    <!-- Struts2核心过滤器配置 -->  <filter>  <filter-name>struts2</filter-name>  <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>  </filter>  <filter-mapping>  <filter-name>struts2</filter-name>  <url-pattern>*.action</url-pattern>  </filter-mapping></web-app>

10.写jsp页面

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>Hibenate+Struts2+Maven+EasyUI实现增删查改</title><!-- 引入easyui库 --><link rel="stylesheet" type="text/css" href="easyui/themes/default/easyui.css">   <link rel="stylesheet" type="text/css" href="easyui/themes/icon.css"><script type="text/javascript" src="easyui/jquery.min.js"></script> <script type="text/javascript" src="easyui/jquery.easyui.min.js"></script> <script type="text/javascript" src="easyui/locale/easyui-lang-zh_CN.js"></script><script type="text/javascript">var DBindex; $(function(){$('#dg').datagrid({        url:'selectuser.action',    loadMsg:'正在拼命加载中...',    columns:[[            {field:'u_id',title:'编号',width:100,align:'center'},            {field:'u_name',title:'用户名',width:100,align:'center',"editor":{type:'validatebox'}},          {field:'u_sex',title:'性别',width:100,align:'center',"editor":{type:'validatebox'}},    ]],onDblClickRow:function(index,row){    DBindex=index;    $('#dg').datagrid('beginEdit',index);   },onClickRow:function(index,row){  DBindex=index;  },toolbar: [{iconCls: 'icon-add',text:"添加",handler: function(){DBindex=0;$('#dg').datagrid('insertRow',{index:0,// 索引从0开始row: {}});$('#dg').datagrid('beginEdit',0);}},'-',{iconCls: 'icon-remove',text:"删除",handler: function(){var row=$('#dg').datagrid("getRows")[DBindex];if(row!=null){var u_id=row["u_id"];$.post("deltetuser.action",{"u_id":u_id},function(data){$('#dg').datagrid('reload');});}}},'-',{iconCls: 'icon-save',text:"保存",handler: function(){$('#dg').datagrid('endEdit',DBindex); var row=$('#dg').datagrid("getRows")[DBindex]; if(row!=null){var u_name=row["u_name"];var u_sex=row["u_sex"];$.post("adduser.action",{"u_name":u_name,"u_sex":u_sex},function(data){$('#dg').datagrid('reload');});     }}},'-',{iconCls: 'icon-edit',text:"修改",handler: function(){$('#dg').datagrid('endEdit',DBindex); var row=$('#dg').datagrid("getRows")[DBindex]; if(row!=null){var u_id=row["u_id"];var u_name=row["u_name"];var u_sex=row["u_sex"];$.post("updateuser.action",{"u_id":u_id,"u_name":u_name,"u_sex":u_sex},function(data){$('#dg').datagrid('reload');});     }}}]});  });</script></head><body><table id="dg" style="width:301px;height:500px"></table> </body></html>

附：EasyUI下载地址

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