ssh完成对oracle数据库的增删查改

上篇博文已经完成利用Myeclipse 2014完成对ssh 三大框架的整合，这篇博文将通过一个书本管理的项目来熟悉框架对oracle数据库的操作，先上效果。

1.效果图

1.1 书本列表：

1.2 增加图书

1.3 修改图书

2. 文件配置

2.1 文件结构

2.2 web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">  <display-name>SSH_Book</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>  <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>  <listener>    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>  <context-param>    <param-name>contextConfigLocation</param-name>    <param-value>WEB-INF/applicationContext.xml</param-value>  </context-param></web-app>

2.3 applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?><beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p"xmlns:aop="http://www.springframework.org/schema/aop"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-4.0.xsd"xmlns:tx="http://www.springframework.org/schema/tx"><!-- 定义数据源Bean，使用C3P0数据源实现，并注入数据源的必要信息 --><bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"destroy-method="close"p:driverClass="oracle.jdbc.driver.OracleDriver"p:jdbcUrl="jdbc:oracle:thin:@localhost:1521:orcl"p:user="scott"p:password="123456"p:maxPoolSize="40"p:minPoolSize="2"p:initialPoolSize="2"p:maxIdleTime="30"/><!-- 定义Hibernate的SessionFactory，SessionFactory需要依赖数据源，注入dataSource --><bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean" p:dataSource-ref="dataSource"><!-- mappingResources用来列出全部映射文件 --><property name="annotatedClasses"><list><!-- 以下用来列出所有的PO类--><value>org.crazyit.booksys.domain.Book</value></list></property><!-- 定义Hibernate SessionFactory的属性 --><property name="hibernateProperties"><props><!-- 指定Hibernate的连接方言 --><prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop><!--是否根据Hiberante映射创建数据表 --><prop key="hibernate.hbm2ddl.auto">update</prop><prop key="hibernate.show_sql">true</prop><prop key="hibernate.format_sql">true</prop></props></property></bean><!-- 定义Service组件，并将DAO组件注入Service组件 --><bean id="bookService" class="org.crazyit.booksys.service.impl.BookServiceImpl"p:bookDao-ref="bookDao"/><!-- 定义DAO组件，并将SessionFactory注入DAO组件 --><bean id="bookDao" class="org.crazyit.booksys.dao.impl.BookDaoHibernate4"p:sessionFactory-ref="sessionFactory"/><!-- 配置Hibernate的局部事务管理器，使用HibernateTransactionManager类 --><!-- 该类是PlatformTransactionManager接口针对采用Hibernate的特定实现类 --><!-- 配置HibernateTransactionManager需依赖注入SessionFactory --><bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"p:sessionFactory-ref="sessionFactory"/><!-- 配置事务增强处理Bean,指定事务管理器 --><tx:advice id="txAdvice" transaction-manager="transactionManager"><!-- 用于配置详细的事务定义 --><tx:attributes><!-- 所有以'get'开头的方法是read-only的 --><tx:method name="get*" read-only="true"/><!-- 其他方法使用默认的事务设置，指定超时时长为5秒 --><tx:method name="*" isolation="DEFAULT" propagation="REQUIRED" timeout="5"/></tx:attributes></tx:advice><!-- AOP配置的元素 --><aop:config><!-- 配置一个切入点 --><aop:pointcut id="myPointcut" expression="bean(bookService)"/><!-- 指定在myPointcut切入点应用txAdvice事务增强处理 --><aop:advisor advice-ref="txAdvice" pointcut-ref="myPointcut"/></aop:config></beans>

2.4 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 name="struts.i18n.encoding" value="UTF-8"/><constant name="struts.enable.DynamicMethodInvocation" value="false" /><constant name="struts.devMode" value="true"/><package name="lee" extends="struts-default"><action name="addBook" class="org.crazyit.booksys.action.BookAction"method="add"><!-- 添加图书成功，列出所有图书 --><result name="success" type="redirectAction">listBooks</result><!-- 添加图书失败，跳转到添加图书的表单页 --><result name="error">/WEB-INF/content/bookForm.jsp</result></action><action name="editBook" class="org.crazyit.booksys.action.BookAction"method="edit"><result>/WEB-INF/content/editForm.jsp</result></action><action name="doEditBook" class="org.crazyit.booksys.action.BookAction"method="doEdit"><!-- 修改图书成功，列出所有图书 --><result name="success" type="redirectAction">listBooks</result><!-- 修改图书失败，跳转到添加图书的表单页 --><result name="error">/WEB-INF/content/editForm.jsp</result></action><action name="listBooks" class="org.crazyit.booksys.action.BookAction"method="list"><result>/WEB-INF/content/listBooks.jsp</result></action><action name="deleteBook" class="org.crazyit.booksys.action.BookAction"method="delete"><result type="chain">listBooks</result></action><!-- 让用户直接访问该应用时列出所有视图页面 --><action name="*"><result>/WEB-INF/content/{1}.jsp</result></action></package></struts>    

3. 控制层文件

使用spring提倡是面向接口编程。下面只列出主要文件：

3.1 BookAction.java

package org.crazyit.booksys.action;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import org.crazyit.booksys.domain.Book;import org.crazyit.booksys.service.BookService;import com.opensymphony.xwork2.ActionSupport;public class BookAction extends ActionSupport{private BookService bookService;// 依赖注入BookService组件必须的setter方法。// 该方法的方法名要与BookService的配置id对应public void setBookService(BookService bookService){this.bookService = bookService;}private Book book;private List<Book> books;private int id;public Book getBook(){return book;}public void setBook(Book book){this.book = book;}public List<Book> getBooks(){return books;}public void setBooks(List<Book> books){this.books = books;}public int getId(){return id;}public void setId(int id){this.id = id;}// 处理添加图书的add()方法public String add(){// 调用业务逻辑组件的addBook()方法来处理用户请求int result = bookService.addBook(book);if(result > 0){addActionMessage("恭喜您，图书添加成功！");return SUCCESS;}addActionError("图书添加失败，请重新输入！");return ERROR;}public String list(){setBooks(bookService.getAllBooks());return SUCCESS;}public String delete(){bookService.deleteBook(id);return SUCCESS;}public String edit(){setBook(bookService.getTheBooks(id));return SUCCESS;}public String doEdit(){Map<String, Object> bookMap = new HashMap<String, Object>();bookMap.put("name", book.getName());bookMap.put("price", book.getPrice());bookMap.put("author", book.getAuthor());bookService.doEditBook(bookMap,id);return SUCCESS;}}

3.2 BookDaoHibernate4

package org.crazyit.booksys.dao.impl;import java.util.List;import org.crazyit.booksys.dao.BookDao;import org.crazyit.booksys.domain.Book;import org.crazyit.common.dao.impl.BaseDaoHibernate4;public class BookDaoHibernate4 extends BaseDaoHibernate4<Book>implements BookDao{}

3.3 BookServiceImpl.java

package org.crazyit.booksys.service.impl;import java.util.List;import java.util.Map;import org.crazyit.booksys.dao.BookDao;import org.crazyit.booksys.domain.Book;import org.crazyit.booksys.service.BookService;public class BookServiceImpl implements BookService{private BookDao bookDao;public void setBookDao(BookDao bookDao){this.bookDao = bookDao;}@Overridepublic int addBook(Book book){return (Integer) bookDao.save(book);}@Overridepublic List<Book> getAllBooks(){return bookDao.findAll(Book.class);}@Overridepublic Book getTheBooks(int id){return  bookDao.get(Book.class, id);}@Overridepublic void deleteBook(int id){bookDao.delete(Book.class, id);}@Overridepublic void doEditBook(Map<String, Object> bookinfo,int id){bookDao.updateData(Book.class, id, bookinfo);}}

3.4 BaseDaoHibernate4.java

package org.crazyit.common.dao.impl;import org.hibernate.*;import java.util.List;import java.util.Map;import java.io.Serializable;import java.util.Set;import org.crazyit.common.dao.*;public class BaseDaoHibernate4<T> implements BaseDao<T>{// DAO组件进行持久化操作底层依赖的SessionFactory组件private SessionFactory sessionFactory;// 依赖注入SessionFactory所需的setter方法public void setSessionFactory(SessionFactory sessionFactory){this.sessionFactory = sessionFactory;}public SessionFactory getSessionFactory(){return this.sessionFactory;}// 根据ID加载实体@SuppressWarnings("unchecked")public T get(Class<T> entityClazz , Serializable id){return (T)getSessionFactory().getCurrentSession().get(entityClazz , id);}// 保存实体public Serializable save(T entity){return getSessionFactory().getCurrentSession().save(entity);}// 更新实体public void update(String sql){//getSessionFactory().getCurrentSession().saveOrUpdate(entity);getSessionFactory().getCurrentSession().createQuery(sql).executeUpdate();}// 删除实体public void delete(T entity){getSessionFactory().getCurrentSession().delete(entity);}// 根据ID删除实体public void delete(Class<T> entityClazz , Serializable id){getSessionFactory().getCurrentSession().createQuery("delete " + entityClazz.getSimpleName()+ " en where en.id = ?0").setParameter("0" , id).executeUpdate();}// 根据ID更新实体public void updateData(Class<T> entityClazz , Serializable id, Map<String, Object> bookinfo){String sql = "set ";String mySql;    Set<String> get = bookinfo.keySet();     int len = bookinfo.size();    int i = 0;    System.out.println(len);        for (String key:get) {           // System.out.println(key+","+bookinfo.get(key));            if(i<len-1) sql =  sql + "en." + key+" = '"+bookinfo.get(key)+"', ";else sql =  sql + "en." + key+" = '"+bookinfo.get(key)+"' ";            i++;        }mySql="update " + entityClazz.getSimpleName()+" en "+sql+" where en.id = ?0";System.out.println(mySql);getSessionFactory().getCurrentSession().createQuery(mySql).setParameter("0" , id).executeUpdate();}// 获取所有实体public List<T> findAll(Class<T> entityClazz){return find("select en from "+ entityClazz.getSimpleName() + " en");}// 获取实体总数public long findCount(Class<T> entityClazz){List<?> l = find("select count(*) from "+ entityClazz.getSimpleName());// 返回查询得到的实体总数if (l != null && l.size() == 1 ){return (Long)l.get(0);}return 0;}// 根据HQL语句查询实体@SuppressWarnings("unchecked")protected List<T> find(String hql){return (List<T>)getSessionFactory().getCurrentSession().createQuery(hql).list();}// 根据带占位符参数HQL语句查询实体@SuppressWarnings("unchecked")protected List<T> find(String hql , Object... params){// 创建查询Query query = getSessionFactory().getCurrentSession().createQuery(hql);// 为包含占位符的HQL语句设置参数for(int i = 0 , len = params.length ; i < len ; i++){query.setParameter(i + "" , params[i]);}return (List<T>)query.list();}/** * 使用hql 语句进行分页查询操作 * @param hql 需要查询的hql语句 * @param pageNo 查询第pageNo页的记录 * @param pageSize 每页需要显示的记录数 * @return 当前页的所有记录 */@SuppressWarnings("unchecked")protected List<T> findByPage(String hql, int pageNo, int pageSize){// 创建查询return getSessionFactory().getCurrentSession().createQuery(hql)// 执行分页.setFirstResult((pageNo - 1) * pageSize).setMaxResults(pageSize).list();}/** * 使用hql 语句进行分页查询操作 * @param hql 需要查询的hql语句 * @param params 如果hql带占位符参数，params用于传入占位符参数 * @param pageNo 查询第pageNo页的记录 * @param pageSize 每页需要显示的记录数 * @return 当前页的所有记录 */@SuppressWarnings("unchecked")protected List<T> findByPage(String hql , int pageNo, int pageSize, Object... params){// 创建查询Query query = getSessionFactory().getCurrentSession().createQuery(hql);// 为包含占位符的HQL语句设置参数for(int i = 0 , len = params.length ; i < len ; i++){query.setParameter(i + "" , params[i]);}// 执行分页，并返回查询结果return query.setFirstResult((pageNo - 1) * pageSize).setMaxResults(pageSize).list();}}

4.显示层文件

4.1 listBooks.jsp

<%@ page contentType="text/html; charset=UTF-8" language="java" errorPage="" %><%@taglib prefix="s" uri="/struts-tags"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>添加图书</title></head><body><h3>添加图书</h3><s:form action="addBook"><s:textfield name="book.name" label="书名"/><s:textfield name="book.price" label="价格"/><s:textfield name="book.author" label="作者"/><tr align="center"><td colspan="2"><s:submit value="添加" theme="simple"/><s:reset value="重设" theme="simple"/></td></tr></s:form></body></html>

4.2 bookForm.jsp

<%@ page contentType="text/html; charset=UTF-8" language="java" errorPage="" %><%@taglib prefix="s" uri="/struts-tags"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>添加图书</title></head><body><h3>添加图书</h3><s:form action="addBook"><s:textfield name="book.name" label="书名"/><s:textfield name="book.price" label="价格"/><s:textfield name="book.author" label="作者"/><tr align="center"><td colspan="2"><s:submit value="添加" theme="simple"/><s:reset value="重设" theme="simple"/></td></tr></s:form></body></html>

4.3 editForm.jsp

<%@ page contentType="text/html; charset=UTF-8" language="java" errorPage="" %><%@taglib prefix="s" uri="/struts-tags"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>修改图书</title></head><body><h3>修改图书</h3><s:form action="doEditBook"><input type="hidden" value="${book.id}"  name="id"/><s:textfield name="book.name" label="书名"/><s:textfield name="book.price" label="价格"/><s:textfield name="book.author" label="作者"/><tr align="center"><td colspan="2"><s:submit value="修改" theme="simple"/><s:reset value="重设" theme="simple"/></td></tr></s:form></body></html>

实例代码到这里下载：http://download.csdn.net/detail/zhengxiaojunkite/8502635

注：本文参考《轻量级javaEE企业应用实践》的代码，进行自己改进。