打开Myeclipse8.6,新建web工程,命名为ssh,点击完成。
获得目录结构如下:
a)右键点击项目,选择MyEclipse->Add Struts Capabilities,或者点击菜单栏中MyEclipse->Project Capabilities->Add Struts Capabilities。
b)选择struts2.1版本
c)点击下一步,选择Struts Core(核心库)和Struts 2 Spring(包含集成Spring插件)的两个最基本库,其他根据需要可以添加。
d)点击完成,添加后的项目多了一个Struts.xml(用于配置action),web.xml中添加了核心过滤器的配置。
<filter> <filter-name>struts2</filter-name> <filter-class> org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter </filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> |
a)右键点击项目,选择MyEclipse->Add Spring Capabilities,或者点击菜单栏中MyEclipse->Project Capabilities->Add Spring Capabilities。
b)选择Spring3.0版本,类库选择 Spring 3.0 AOP、Spring 3.0 Core、Spring 3.0 Persistence Core、Spring 3.0 Persistence JDBC、Spring 3.0 Web 5个库,并勾选复制到本地WEB-INF/lib目录。
c)点击下一步,默认配置不需修改。
d)点击完成,查看添加Spring后的项目,增加了applicationContex.xml文件
a)右键点击项目,选择MyEclipse->Add Hibernate Capabilities,或者点击菜单栏中MyEclipse->Project Capabilities->Add Hibernate Capabilities。
b)选择Hibernate3.3版本,如果要使用注记可选中启用annotation,但是会对后续自动生成实体类造成麻烦,不选就是用xml文件形式进行实体类映射,默认勾选Hibernate 3.3 Annotation & Entity Manager、Hibernate 3.3 Core Libraries两个类库,复制jar文件到本地WEB-INF/lib文件夹下。
c)点击下一步,选择使用Spring的配置文件applicationContext.xml,这样就不会生成hibernate.cfg.xml,生成与否看个人习惯。
d)点击下一步,选择已经存在的applicationContext.xml文件的位置以及创建sessionFactory的名字
e)下一步,选择已经建立好的数据库连接mydb
f)点击下一步,取消勾选,不生成HibernateSessionFactory类
g)点击完成,查看工程,applicationContext.xml文件中增加了数据库连接的配置,包括datasource和sessionFactory
环境搭建完毕
a)创建包结构:model(实体类)、dao(数据库访问类)、service(业务逻辑类)、web(控制类)
数据库名:bai
建立users表 ,数据库脚本
CREATE TABLE users( id int(11) NOT NULL auto_increment , username varchar(50) default NULL, password varchar(50) default NULL, PRIMARY KEY (id) ); |
利用Myeclipse生成model和dao(最好自己构建可以减少冗余代码)
转到MyEclipse数据库浏览视图下,双击mydb进行连接
右键点击users表,选择Hibernate反向工程
选择生成目录为app.model,勾选创建POJO即创建表对应的Javabean,同时创建映射文件hbm.xml,勾选更新hibernate配置,勾选创建spring dao。
下一步,选择id生成策略为native,因为users主键自增,或者在下一步中选择也可以
点击完成,回到代码视图查看工程变化,model包下面增加了Users.java、UsersDAO.java、Users.hbm.xml三个文件
将UsersDAO移动到dao包中,并抽出接口IUsersDAO
因为位置移动需要修改applicationContex.xml中的配置
<bean id="UsersDAO" class="app.dao.UsersDAO"> <property name="sessionFactory"> <ref bean="sessionFactory"></ref> </property> </bean> |
a)编写service层代码,创建IUsersService接口和UsersService实现类,编写CRUD的方法。
IUsersService接口 package app.service; import java.util.List; import app.model.Users; public interface IUsersService { public List<Users>findAll(); public List<Users> findByUsername (String uname);v public Users findByUid(Integer uid); public void addUsers(Users u) throws Exception ; public void updateUsers(Users u) throws Exception ; public void delUsers(Integer uid) throws Exception ; public Users login(String uname,String upass); } UsersService实现类 package app.service; import java.util.List; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import app.dao.IUsersDAO; import app.dao.UsersDAO; import app.model.Users;
public class UsersService implements IUsersService { private static final Logger log = LoggerFactory.getLogger(UsersService.class); private IUsersDAO usersDAO=null; public void setUsersDAO(IUsersDAO usersDAO) { this.usersDAO = usersDAO; } public void addUsers(Users u) throws Exception { usersDAO.save(u); } public void delUsers (Integer uid) throws Exception { usersDAO.delete(findByUid(uid)); } public List<Users> findAll() { return usersDAO.findAll(); } public List<Users> findByUsername(String uname) { return usersDAO.findByUsername(uname); } public Users findByUid(Integer uid) { return usersDAO.findById(uid); } public Users login(String uname, String upass) {
List list = usersDAO.findByUsername(uname); if(null==list||list.size()==0) return null; Users u=(Users) usersDAO.findByUsername(uname).get(0); if(null==u) return null; if(uname.equals(u.getUsername())&&upass.equals(u.getPassword())) return u; else return null; } public void updateUsers (Users u) throws Exception { usersDAO.attachDirty(u); } } |
b)编写web层UsersAction代码,用于对用户增删改查进行处理
package app.web; import java.util.ArrayList; import java.util.List; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.context.ApplicationContext; import app.model.Users; import app.service.IUsersService; import com.opensymphony.xwork2.ActionContext; import com.opensymphony.xwork2.ActionSupport; public class UsersAction extends ActionSupport{ private static final Logger log = LoggerFactory.getLogger(UsersAction.class); private Integer uid=new Integer(0);//用于修改删除时传参数 private Users u=new Users();//用于增改 private List<Users> userList=new ArrayList<Users>();//用于查询 private IUsersService usersService=null; public String addUser() throws Exception{ try { usersService.addUsers(u); } catch (Exception e) { log.error("保存用户错误",e); return ERROR; } return SUCCESS; } public String listUser() throws Exception{ userList=usersService.findAll(); return SUCCESS; } public String editUser() throws Exception{ try { u=usersService.findByUid(uid); } catch (Exception e) { log.error("修改用户错误",e); return ERROR; } return SUCCESS; } public String updateUser() throws Exception{ try { usersService.updateUsers(u); } catch (Exception e) { log.error("更新用户错误",e); return ERROR; } return SUCCESS; } public String delUser() throws Exception{ try { usersService.delUsers(uid); } catch (Exception e) { log.error("删除用户错误",e); return ERROR; } return SUCCESS; } public String login() throws Exception{ try { Users loginUser=usersService.login(u.getUsername(), u.getPassword()); if(null!=loginUser){ ActionContext context=ActionContext.getContext(); context.getSession().put("LOGINUSER",loginUser); return SUCCESS; } } catch (Exception e) { log.error("登录查询错误",e); return ERROR; } return INPUT; } public void setUsersService(IUsersService usersService) { this.usersService = usersService; } public Users getU() { return u; } public void setU(Users u) { this.u = u; } public List<Users>getUserList() { return userList; } public void setUserList(List<Users>userList) { this.userList = userList; } public Integer getUid() { return uid; } public void setUid(Integer uid) { this.uid = uid; } } |
a)补充applicationContext.xml配置文件,装配注入关系和事务处理
增加spring配置文件节点的命名空间,否则事务处理节点不识别:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> |
增加装配关系
<bean id="UsersDAO" class="app.dao.UsersDAO"> <property name="sessionFactory"> <ref bean="sessionFactory"></ref> </property> </bean> <bean id="UsersService" class="app.service.UsersService"> <property name="usersDAO" ref="UsersDAO"/> </bean> <bean id="UsersAction" class="app.web.UsersAction"> <property name="usersService" ref="UsersService"/> </bean> |
增加事务处理机制
<!--配置事务管理器--> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory"> <ref bean="sessionFactory"/> </property> </bean> <!--配置事务的传播特性--> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="save*" propagation="REQUIRED"/> <tx:method name="update*" propagation="REQUIRED"/> <tx:method name="delete*" propagation="REQUIRED"/> <tx:method name="add*" propagation="REQUIRED"/> <tx:method name="del*" propagation="REQUIRED"/> <tx:method name="*" read-only="true"/> </tx:attributes> </tx:advice> <!-- 哪些类的哪些方法参与事务 --> <aop:config> <aop:pointcut id="allServiceMethod" expression="execution(* app.service.*.*(..))"/> <aop:advisor pointcut-ref="allServiceMethod" advice-ref="txAdvice"/> </aop:config> </beans> |
b)配置Struts.xml
<?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> <constant name="struts.objectFactory" value="spring"></constant> <package name="usermanage" extends="struts-default"> <action name="addUser" class="UsersAction" method="addUser"> <result name="success" type="redirect">listUser.action</result> <result name="error">/error.jsp</result> </action> <action name="editUser" class="UsersAction" method="editUser"> <result name="success">/user/user_edit.jsp</result> </action> <action name="updateUser" class="UsersAction" method="updateUser"> <result name="success" type="redirect">listUser.action</result> <result name="error">/error.jsp</result> </action> <action name="delUser" class="UsersAction" method="delUser"> <result name="success" type="redirect">listUser.action</result> <result name="error">/error.jsp</result> </action> <action name="listUser" class="UsersAction" method="listUser"> <result name="success">/user/user_list.jsp</result> </action> <action name="login" class="UsersAction" method="login"> <result name="success">/index.jsp</result> <result name="input">/login.jsp</result> <result name="error">/error.jsp</result> </action> </package> </struts> |
c)配置web.xml,设定applicationContex.xml的加载位置,如果放在WEB-INF下则不需要设定,配置监听
<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> |
a)页面关键代码
User_add.jsp
<body> <s:form action="addUser"> <table border="1"> <tr><s:textfield label="用户名" name="u.uname"></s:textfield></tr> <tr><s:textfield label="密码" name="u.upass"></s:textfield></tr> <tr><td colspan="2"><s:submit value="保存"></s:submit></td></tr> </table> </s:form> </body> |
User_edit.jsp
<body> <s:form action="updateUser"> <table border="1"> <s:hidden name="u.uid"></s:hidden> <tr><s:textfield label="用户名" name="u.uname"></s:textfield></tr> <tr><s:textfield label="密码" name="u.upass"></s:textfield></tr> <tr><td colspan="2"><s:submit value="保存"></s:submit></td></tr> </table> </s:form>
</body> |
User_list.jsp
<body> <table border="1"> <tr><td>编号</td><td>用户名</td><td>密码</td><td>操作</td></tr> <s:iterator value="userList"> <tr> <td>${uid}</td> <td>${uname }</td> <td>${upass }</td> <td><a href='<s:url action="editUser"><s:param name="uid" value="uid" /></s:url>'>修改</a> <a onclick="return confirm('确定要删除吗?');" href='<s:url action="delUser"><s:param name="uid" value="uid" /></s:url>'>删除</a></td> </tr> </s:iterator> </table> </body> |
Login.jsp
<s:form action="login"> <table border="1"> <tr><s:textfield label="用户名" name="u.uname"></s:textfield></tr> <tr><s:textfield label="密码" name="u.upass"></s:textfield></tr> <tr><td colspan="2"><s:submit value="登录"></s:submit></td></tr> </table> </s:form> |
http://localhost:8080/ssh/login.jsp