SSH框架搭建demo

1、新建Java Web工程

2、添加Struts2.1框架支持

去除冲突包：antlr-2.7.2.jar

一般项目加上这三个包足够，后期可以视项目需求增加支持包：

2.1配置web.xml文件

增加struts2的配置，增加容器对struts2的初始化。增加代码如下：这些配置代码对于struts2是不变的，直接复制到web.xml即可。

<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>

2.2配置struts.xml文件

<?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>
</struts>

3、添加Spring框架支持

一般添加这6个支持包

效果图：

3.1配置web.xml文件

初始化加载spring资源配置文件

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/applicationContext.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>

4、配置数据源

此处用oracle数据库作为数据源：

create user ssh identified by 1234;
grant dba to ssh with admin option;
create table people (
id varchar2(32) primary key,
username varchar2(32),
password varchar2(32)
);
insert into PEOPLE (ID, USERNAME, PASSWORD) values ('1', 'John', '1234');
insert into PEOPLE (ID, USERNAME, PASSWORD) values ('2', 'Tom', '1234');

驱动包直接用oracle自带的jdbc驱动包即可，路径如上图所示。

5、添加Hibernate框架支持

删除冲突包：asm.jar和cglib-2.1.3.jar

切换到MyEclipse Database Explorer视图：

选择我们建立的链接SSH，点开，找到对应的table，people，右键

6、代码设计

为了方便管理代码，先建立四个package，如下图：

在com.ssh.dao下建立一个接口，IPeopleDAO.java

package com.ssh.dao;
import java.util.List;
import com.ssh.people.People;
public interface IPeopleDAO {
public People findById(String id);
public List findByUsername(Object username);
public void save(People people);
}

把PeopleDAO拖到com.ssh.dao.impl下

PeopleDAO.java里要加implements IPeopleDAO

修改后：

在com.ssh.service下建立IPeopleService.java

package com.ssh.service;
import com.ssh.people.People;
public interface IPeopleService {
public People getPeopleById(String id);
public People getPeopleByUsername(String username);
public void addPeople(People people);
}

在com.ssh.service.impl下建立PeopleService.java

package com.ssh.service.impl;
import java.util.List;
import com.ssh.dao.IPeopleDAO;
import com.ssh.people.People;
import com.ssh.service.IPeopleService;
public class PeopleService implements IPeopleService{
private IPeopleDAO peopleDAO;
public People getPeopleById(String id) {
return peopleDAO.findById(id);
}
public People getPeopleByUsername(String username) {
List list = peopleDAO.findByUsername(username);
if(list.size() == 0){
return null;
}else{
return (People)list.get(0);
}
}
public void addPeople(People people) {
peopleDAO.save(people);
}
public IPeopleDAO getPeopleDAO() {
return peopleDAO;
}
public void setPeopleDAO(IPeopleDAO peopleDAO) {
this.peopleDAO = peopleDAO;
}
}

效果图：

接着要在applicationContext.xml中添加一个bean的信息

<bean id="peopleService" class="com.ssh.service.impl.PeopleService">
<property name="peopleDAO">
<ref bean="PeopleDAO"></ref>
</property>
</bean>

整个applicationContext.xml的全部内容

<?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:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName"
value="oracle.jdbc.OracleDriver">
</property>
<property name="url"
value="jdbc:oracle:thin:@localhost:1521/orcl">
</property>
<property name="username" value="ssh"></property>
<property name="password" value="1234"></property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.Oracle9Dialect
</prop>
</props>
</property>
<property name="mappingResources">
<list>
<value>com/ssh/people/People.hbm.xml</value></list>
</property>
</bean>
<bean id="PeopleDAO" class="com.ssh.dao.impl.PeopleDAO">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>
<bean id="peopleService" class="com.ssh.service.impl.PeopleService">
<property name="peopleDAO">
<ref bean="PeopleDAO"></ref>
</property>
</bean>
</beans>

创建处理action的文件，新建com.ssh.action包，新建LoginAction.java文件

package com.ssh.action;
import com.opensymphony.xwork2.ActionSupport;
import com.ssh.people.People;
import com.ssh.service.IPeopleService;
public class LoginAction extends ActionSupport{
private String username;
private String password;
private IPeopleService peopleService;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public IPeopleService getPeopleService() {
return peopleService;
}
public void setPeopleService(IPeopleService peopleService) {
this.peopleService = peopleService;
}
public String execute(){
People people = peopleService.getPeopleByUsername(username);
if(people == null) return "error";
if(people.getPassword().equals(password))
return "success";
else return "error";
}
public void validate(){
if(username == null || username.length() == 0){
super.addActionError("用户名不能为空");
}
if(password == null || password.length() == 0){
super.addActionError("密码不能为空");
}
}
}

配置applicationContext.xml文件：

<bean id="loginAction" class="com.ssh.action.LoginAction" scope="prototype">
<property name="peopleService" ref="peopleService"></property>
</bean>

配置struts.xml文件：

<?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>
<package name="com" extends="struts-default" namespace="/">
<action name="login" class="loginAction">
<result name="success">/index.jsp</result>
<result name="input">/login.jsp</result>
<result name="error">/login.jsp</result>
</action>
</package>
</struts>

新增login.jsp文件：

<%@ 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+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>登录页面</title>
</head>
<body>
<s:form name="form" action="login.action" method="post">
<s:textfield name="username" label="username"></s:textfield>
<s:password name="password" label="password"></s:password>
<s:submit label="submit"></s:submit>
</s:form>
<s:actionerror/>
</body>
</html>

6.1完整的struts.xml文件

<?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>
<package name="com" extends="struts-default" namespace="/">
<action name="login" class="loginAction">
<result name="success">/index.jsp</result>
<result name="input">/login.jsp</result>
<result name="error">/login.jsp</result>
</action>
</package>
</struts>

6.2完整的web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name></display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<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>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/applicationContext.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
</web-app>

6.3完整的applicationContext.xml

<?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:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName"
value="oracle.jdbc.OracleDriver">
</property>
<property name="url"
value="jdbc:oracle:thin:@localhost:1521/orcl">
</property>
<property name="username" value="ssh"></property>
<property name="password" value="1234"></property>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.Oracle9Dialect
</prop>
</props>
</property>
<property name="mappingResources">
<list>
<value>com/ssh/people/People.hbm.xml</value></list>
</property>
</bean>
<bean id="PeopleDAO" class="com.ssh.dao.impl.PeopleDAO">
<property name="sessionFactory">
<ref bean="sessionFactory" />
</property>
</bean>
<bean id="peopleService" class="com.ssh.service.impl.PeopleService">
<property name="peopleDAO">
<ref bean="PeopleDAO"></ref>
</property>
</bean>
<bean id="loginAction" class="com.ssh.action.LoginAction" scope="prototype">
<property name="peopleService" ref="peopleService"></property>
</bean>
</beans>