JavaEE三大框架的整合

2019-05-14 14:01:39

注：应用软件为：Eclipse+MySQL；三大框架版本为：Struts2+Spring5+Hibernate5

第一步准备工作

三大框架所用的.jar下载，文件见如下链接：

https://www.cnblogs.com/MrZhangxd/p/10793454.html

整合目录结构：（打马赛克的地方有个人信息，望宝宝们见谅）

第二步配置SSH三大框架

将以上下载的.jar文件复制粘贴到WebContent/WEB-INF/lib文件夹下

第三步主要实现业务逻辑代码

注：dao.impl、service.impl包在dao、service包建完并且里面有.java文件后在建，以免发生dao、service包被dao.impl、service.impl包所覆盖。

（重要的事说三遍）

|--Src

| |--org.xxx.com.action

| | |--LoginAction.java

| | |--RegisterAction.java

| |--org.xxx.com.dao

| | |--UserDao.java(interface)

| |--org.xxx.com.dao.impl（implement）

| | |--UserDaoImpl.java（实现接口类）

| |--org.xxx.com.exception

| | |--AgeException.java

| |--org.xxx.com.po

| | |--User.java

| |--org.xxx.com.service

| | |--UserService.java(interface)

| |--org.xxx.com.service.impl（implement）

|_|_|_UserServiceImpl.java(实现接口类)

主要代码如下：不在多余解释，有啥看不懂可以发我邮箱，有时间会给宝宝们解决的

LoginAction.java

package org.xxx.com.action;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.context.annotation.Scope;

import org.springframework.stereotype.Controller;

import org.xxx.com.po.User;

import org.xxx.com.service.UserService;

@Controller()

@Scope("prototype")

publicclass LoginAction {

@Autowired

private UserService userService;

private User user;

public User getUser() {

returnuser;

}

publicvoid setUser(User user) {

this.user = user;

}

public String login() {

List<User> u= userService.login(user);

if(u.size()>0) {

return"success";

}

else{

return"error";

}

RegisterAction.java

package c.action;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.context.annotation.Scope;

import org.springframework.stereotype.Controller;

import org.xxx.com.exception.AgeException;

import org.xxx.com.po.User;

import org.xxx.com.service.UserService;

import com.opensymphony.xwork2.ActionContext;

@Controller()

@Scope("prototype")

publicclass RegisterAction {

@SuppressWarnings("unused")

@Autowired

private UserService userService;

private User user;

public User getUser() {

returnuser;

}

publicvoid setUser(User user) {

this.user = user;

}

public String execute() {

if (user.getAge()>100) {

thrownew AgeException("年龄不符合要求");

}

userService.addUser(user);

return"success";

}

public String updateUser() {

userService.updateUser(user);

return"success";

}

public String deleteUser() {

userService.deleteUser(user);

return"success";

}

public String queryUsers() {

List<User> lsit= userService.queryUsers();

ActionContext ctx= ActionContext.getContext();

ctx.put("list", lsit); //表示request对象,ctx.getSession();

//这个方法可以得到session的东西，但是没有得到session对象，可以对此进行put,ctx.getSession().get(key)可以获取session中对象

//Map map=

return"success";

}

public String getById() {

User u= userService.getById(user.getId());

ActionContext ctx= ActionContext.getContext();

ctx.put("u", u); //表示request对象,ctx.getSession();

return"success";

}

UserDao.java

package org.xxx.com.dao;

import java.util.List;

import org.xxx.com.po.User;

publicinterface UserDao {

public Integer insertUser(User user);

public List<User> login(User user);

publicint updateUser(User user);

publicint deleteUser(User user);

public List<User> queryUsers();

public User getById(intid);

}

UserDaoImpl.java

package org.xxx.com.dao.impl;

import java.util.List;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.query.Query;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Repository;

import org.xxx.com.dao.UserDao;

import org.xxx.com.po.User;

@Repository("userDao")

publicclass UserDaoImpl implements UserDao {

@Autowired

private SessionFactory SessionFactory ;

private Session getSession() {

returnSessionFactory.getCurrentSession();

}

@Override

public Integer insertUser(User user) {

getSession().save(user);

returnnull;

}

@Override

public List<User> login(User user) {

String hql="select distinct u from User u where u.username=?0 and u.password=?1 ";

@SuppressWarnings("rawtypes")

Query query =getSession().createQuery(hql);

query.setParameter(0+"", user.getUsername());

query.setParameter(1+"", user.getPassword());

// query.setFirstResult(1).setMaxResults(1);

//System.out.println(query.list().size());

@SuppressWarnings("unchecked")

List<User> list= query.list();

returnlist;

}

@Override

publicint updateUser(User user) {

String hql="update User u set username=?0,password=?1 ,age=?2 where id=?3 ";

@SuppressWarnings("rawtypes")

Query query =getSession().createQuery(hql);

query.setParameter(0+"", user.getUsername());

query.setParameter(1+"", user.getPassword());

query.setParameter(2+"", user.getAge());

query.setParameter(3+"", user.getId());

intresult = query.executeUpdate();

returnresult;

}

@Override

publicint deleteUser(User user) {

String hql="delete from User u where u.id=?0 ";

@SuppressWarnings("rawtypes")

Query query =getSession().createQuery(hql);

query.setParameter(0+"", user.getId());

intresult = query.executeUpdate();

returnresult;

}

@Override

public List<User> queryUsers() {

String hql="select distinct u from User u ";

@SuppressWarnings("rawtypes")

Query query =getSession().createQuery(hql);

@SuppressWarnings("unchecked")

List<User> list= query.list();

returnlist;

}

@Override

public User getById(intid) {

String hql="select distinct u from User u where u.id=?0";

@SuppressWarnings("rawtypes")

Query query =getSession().createQuery(hql);

query.setParameter(0+"", id);

@SuppressWarnings("unchecked")

List<User> list_u=query.list();

User list=null;

if(list_u.size()>0){

list = list_u.get(0);

}

returnlist;

}

AgeException

package org.xxx.com.exception;

@SuppressWarnings("serial")

publicclass AgeException extends RuntimeException {

public AgeException() {

super();

// TODO Auto-generated constructor stub

}

public AgeException(String message, Throwable cause, booleanenableSuppression, booleanwritableStackTrace) {

super(message, cause, enableSuppression, writableStackTrace);

// TODO Auto-generated constructor stub

}

public AgeException(String message, Throwable cause) {

super(message, cause);

// TODO Auto-generated constructor stub

}

public AgeException(String message) {

super(message);

// TODO Auto-generated constructor stub

}

public AgeException(Throwable cause) {

super(cause);

// TODO Auto-generated constructor stub

}

User.java

package org.xxx.com.po;

import javax.persistence.Entity;

import javax.persistence.GeneratedValue;

import javax.persistence.GenerationType;

import javax.persistence.Id;

import javax.persistence.Table;

@Entity

@Table(name="tb_user")

publicclass User {

@Id

@GeneratedValue(strategy=GenerationType.IDENTITY)

private Integer id;

private String username;

private String password;

private Integer age;

public Integer getId() {

returnid;

}

publicvoid setId(Integer id) {

this.id = id;

}

public String getUsername() {

returnusername;

}

publicvoid setUsername(String username) {

this.username = username;

}

public String getPassword() {

returnpassword;

}

publicvoid setPassword(String password) {

this.password = password;

}

public Integer getAge() {

returnage;

}

publicvoid setAge(Integer age) {

this.age = age;

}

public User() {

super();

}

public User(String username, String password, Integer age) {

super();

this.username = username;

this.password = password;

this.age = age;

}

UserService.java

package org.xxx.com.service;

import java.util.List;

import org.xxx.com.po.User;

publicinterface UserService {

publicvoid addUser(User user);

public List<User> login(User user);

publicint updateUser(User user);

publicint deleteUser(User user);

public List<User> queryUsers();

public User getById(intid);

}

UserServiceImpl.java

package org.xxx.com.service.impl;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;

import org.springframework.transaction.annotation.Transactional;

import org.xxx.com.dao.UserDao;

import org.xxx.com.po.User;

import org.xxx.com.service.UserService;

@Service("userService")

publicclass UserServiceImpl implements UserService {

@Autowired

private UserDao userDao;

@Transactional

publicvoid addUser(User user) {

userDao.insertUser(user);

}

@Transactional(readOnly=true)

@Override

public List<User> login(User user) {

returnuserDao.login(user);

}

@Transactional

@Override

publicint updateUser(User user) {

returnuserDao.updateUser(user);

}

@Transactional

@Override

publicint deleteUser(User user) {

return userDao.deleteUser(user);

}

@Transactional(readOnly=true)

@Override

public List<User> queryUsers() {

// TODO Auto-generated method stub

returnuserDao.queryUsers();

}

@Transactional(readOnly=true)

@Override

public User getById(intid) {

returnuserDao.getById(id);

}

第四步主要是配置文件

web.xml

struts.xml

applicationContext.xml

hibernate.cfg.xml

db.properties

接下来一个一个来配置（配置属性不多解释，有啥看不懂可以发我邮箱，有时间会给宝宝们解决的）

web.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<web-appxmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns="http://xmlns.jcp.org/xml/ns/javaee"

xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"id="WebApp_ID"version="3.1">

<display-name>Project_JavaEE_Lab_04</display-name>

<welcome-file-list>

<welcome-file>index.html</welcome-file>

<welcome-file>index.htm</welcome-file>

<welcome-file>index.jsp</welcome-file>

<welcome-file>default.html</welcome-file>

<welcome-file>default.htm</welcome-file>

<welcome-file>default.jsp</welcome-file>

</welcome-file-list>

<context-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:applicationContext.xml</param-value>

</context-param>

<listener>

<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

</listener>

<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>/*</url-pattern>

</filter-mapping>

</web-app>

struts.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<!DOCTYPEstrutsPUBLIC

"-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"

"http://struts.apache.org/dtds/struts-2.5.dtd">

<struts>

<constantname="struts.enable.DynamicMethodInvocation"value="false"/>

<packagename="default"namespace="/"extends="struts-default">

<actionname="registerA"

class="org.xxx.com.action.RegisterAction">

<resultname="success">/WEB-INF/content/welcome.jsp</result>

</action>

<actionname="*">

<result>/WEB-INF/content/register.jsp</result>

</action>

<actionname="loginAction"

class="org.xxx.com.action.LoginAction"method="login">

<resultname="success">/WEB-INF/content/welcome.jsp</result>

<resultname="error">/WEB-INF/content/loginForm.jsp</result>

</action>

<actionname="queryUsersAction"class="org.xxx.com.action.RegisterAction"method="queryUsers">

<resultname="success">/WEB-INF/content/listUser.jsp</result>

<resultname="error">/WEB-INF/content/error.jsp</result>

</action>

<actionname="updateUserAction"

class="org.xxx.com.action.RegisterAction"method="updateUser">

<resultname="success"type="redirectAction">

<paramname="actionName">queryUsersAction</param>

</result>

<resultname="error">/WEB-INF/content/error.jsp</result>

</action>

<actionname="deleteUserAction"

class="org.xxx.com.action.RegisterAction"method="deleteUser">

<resultname="success">/WEB-INF/content/listUser.jsp</result>

<resultname="error">/WEB-INF/content/error.jsp</result>

</action>

<actionname="getByIdAction"class="org.xxx.com.action.RegisterAction"method="getById">

<resultname="success">/WEB-INF/content/updateUser.jsp</result>

<resultname="error">/WEB-INF/content/error.jsp</result>

</action>

</package>

</struts>

applicationContext.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<beansxmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns:context="http://www.springframework.org/schema/context"

xmlns:tx="http://www.springframework.org/schema/tx"

xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd

http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context-4.3.xsd

http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

<context:component-scan

base-package="org.xxx.com">

</context:component-scan>

<context:property-placeholderlocation="classpath:db.properties"/>

<beanid="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

<propertyname="user"value="${jdbc.user}"></property>

<propertyname="password"value="${jdbc.password}"></property>

<propertyname="jdbcUrl"value="${jdbc.jdbcUrl}"></property>

<propertyname="driverClass"value="${jdbc.driverClass}"></property>

<propertyname="initialPoolSize"value="${jdbc.initPoolSize}"></property>

<propertyname="maxPoolSize"

value="${jdbc.maxPoolSize}"></property>

</bean>

<beanid="sessionFactory"class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">

<propertyname="dataSource"ref="dataSource"></property>

<propertyname="configLocation"value="classpath:hibernate.cfg.xml"></property>

</bean>

<beanid="transactionManager"class="org.springframework.orm.hibernate5.HibernateTransactionManager">

<propertyname="dataSource"ref="dataSource"></property>

<propertyname="sessionFactory"ref="sessionFactory"></property>

</bean>

<tx:annotation-driventransaction-manager="transactionManager"/>

</beans>

hibernate.cfg.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<!DOCTYPEhibernate-configuration

PUBLIC"-//Hibernate/Hibernate Configuration DTD 3.0//EN"

"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

<session-factory>

<propertyname="show_sql">true</property>

<propertyname="hibernate.hbm2ddl.auto">update</property>

<propertyname="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>

<mappingclass="org.xxx.com.po.User"/>

</session-factory>

</hibernate-configuration>

db.properties

jdbc.user=数据库用户名

jdbc.password=数据库密码

jdbc.driverClass=com.mysql.jdbc.Driver

jdbc.jdbcUrl=jdbc:mysql://localhost:3306/db_ssh（数据库）

jdbc.initPoolSize=5

jdbc.maxPoolSize=10

注db.properties可以以一下代码直接在hibernate.cfg.xml里面配置

<property name="connection.driver_class">com.mysql.jdbc.Driver

</property>

<property

name="connection.url">jdbc:mysql://localhost:3306/ssh?useSSL=true

</property>

<property name="connection.username">数据库用户名</property>

<property name="connection.password">数据库密码</property>

<property name="hibernate.c3p0.max_size">20</property>

<property name="hibernate.c3p0.min_size">1</property>

<property name="hibernate.c3p0.timeout">5000</property>

<property name="hibernate.c3p0.max_statements">100</property>

<property name="hibernate.c3p0.idle_test_period">3000</property>

<property name="hibernate.c3p0.acquire_increment">2</property>

<property name="hibernate.c3p0.validate">true</property>

<property

name="dialect">org.hibernate.dialect.MySQL5InnoDBDialect

</property>

第五步 Web前端

Regeister.jsp

LongForm.jsp

Welcome.jsp

ListUser.jsp

UpdataUser.jsp

Error.jsp

接下来一一写jsp页面

Regeister.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"

pageEncoding="utf-8"%>

<!DOCTYPE html>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<link href="css/styles.css" rel="stylesheet">

<title>Insert title here</title>

</head>

<body>

<div>

<div class="hesder">

</div>

<div class="center">

<form action="registerA" class="">

<table>

<tr>

<td>用户名</td>

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

</tr>

<tr>

<td>密码</td>

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

</tr>

<tr>

<td>年龄</td>

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

</tr>

<tr>

<td colspan="2" align="center"><input type="submit" value=注册 /></td>

</tr>

</table>

</form>

</div>

<div class="footer">

</div>

</body>

</html>

LongForm.jsp

<%@ 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>登录</title>

</head>

<body>

<div>

<div></div>

<div>

<form action="loginAction" method="post">

<table>

<tr>

<td>用户名</td>

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

</tr>

<tr>

<td>密码</td>

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

</tr>

<tr>

<td colspan="2" align="center"><input type="submit" value=登录 /></td>

</tr>

</table>

</form>

</div>

<div>

</div>

</body>

</html>

Welcome.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@ taglib prefix="s" uri="/struts-tags" %>

<!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>Insert title here</title>

</head>

<body>

<h1>注册成功！！

<br>用户名：<s:property value="user.username"/>

<br>密码：<s:property value="user.password"/>

<br>年龄：<s:property value="user.age"/>

</h1>

<br><a href="queryUsersAction">用户一栏表</a>

</body>

</html>

ListUser.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@taglib prefix="s" uri="/struts-tags" %>

<!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>登录</title>

</head>

<script type="text/javascript">

function update(id){

window.location.href="getByIdAction?user.id="+id;

}

</script>

<body>

<center>

<table>

<tr><td>顺序</td><td>id</td><td>用户名</td><td>密码</td><td>年龄</td></tr>

<s:iterator value="list" status="st">

<tr>

<td><s:property value="#st.index"/></td>

<td><s:property value="id" /></td>

<td><s:property value="username" /></td>

<td><s:property value="password" /></td>

<td><s:property value="age" /></td>

<td><button onclick='update(<s:property value="id" />)'>修改</button></td>

<td><button onclick='delete(<s:property value="id" />)'>删除</button></td>

</tr>

</s:iterator>

</table>

</center>

</body>

</html>

UpdataUser.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@taglib prefix="s" uri="/struts-tags" %>

<!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>Insert title here</title>

</head>

<body>

<div>

<div></div>

<div>

<form action="updateUserAction">

<table>

<tr>

<td colspan="2" align="center"><input type="hidden" name="user.id" value="${u.id}"/></td>

</tr>

<tr>

<td>用户名</td>

<td><input type="text" name="user.username" value="${u.username}"/></td>

</tr>

<tr>

<td>密码</td>

<td><input type="text" name="user.password" value="${u.password}"/></td>

</tr>

<tr>

<td>年龄</td>

<td><input type="text" name="user.age" value="${u.age}"/></td>

</tr>

<tr>

<td colspan="2" align="center"><input type="submit" /></td>

</tr>

</table>

</form>

</div>

<div></div>

</div>

</body>

</html>

Error.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@ taglib prefix="s" uri="/struts-tags" %>

<!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>访问错误页面</title>

</head>

<body>

<h1>访问错误</h1>

</body>

到此为止ssh三大框架整合完成

第六步数据操作

创建数据库

Create database db_ssh;

创建tb_user表

CREATE TABLE `tb_user` (

`id` int(11) NOT NULL AUTO_INCREMENT,

`password` varchar(255) DEFAULT NULL,

`username` varchar(255) DEFAULT NULL,

`age` int(11) DEFAULT NULL,

PRIMARY KEY (`id`)

) AUTO_INCREMENT=6 DEFAULT CHARSET=utf8;

向tb_user表中插入数据

INSERT INTO `tb_user` VALUES ('1', 'xxx', '宝宝们', '永远18岁');

INSERT INTO `tb_user` VALUES ('2', 'xxx', '宝宝们', '永远18岁');

INSERT INTO `tb_user` VALUES ('3', 'xxx', '宝宝们', '永远18岁');

INSERT INTO `tb_user` VALUES ('4', 'xxx', '宝宝们', '永远18岁');

INSERT INTO `tb_user` VALUES ('5', 'xxx', '宝宝们', '永远18岁');

个人邮箱

QQ邮箱地址	2504900804@qq.com
outLook邮箱地址	Mr_Zhangxd@OutLook.com
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