首页 > 代码库 > 转载:eclipse 搭建SSH项目(第二篇,有具体的项目例子)
转载:eclipse 搭建SSH项目(第二篇,有具体的项目例子)
读博文前应该注意:
- 本文提纲:本文通过一个用户注册的实例讲解SSH的整合。创建Struts项目,整合Hibernate,整合Spring。最后总结如何熟练创建SSH项目。
- 仅是创建SSH项目,对于其他的扩展例如Struts的国际化,Hibernate的缓存优化,Spring的AOP等,本博文涉及不到。想学习更多的东西请搜索其他博文。
- 本项目的环境:Windows 8-64位,Eclipse Indigo Service Release 2,Tomcat 7.0,Struts-2.2.3.1,spring-framework-3.2.3.RELEASE(本来使用Spring3.1,但是整合Spring的时候启动服务器报错。错误信息竟然是Spring框架中的方法参数空指针。。。对比Spring3.2版本后,发现在3.2种增加了判断此参数是否为空,所以最终改为用Spring3.2.3的版本。详细错误信息见本目录下5),hibernate-release-4.0.0.CR6(整合Spring3时,可以启动服务器,但是点击注册后调用UserDao类的getHibernateTemplate().save(Obj)时浏览器页面报错,但是服务器没有反应。提示org.hibernate.SessionFactory中有没有openSession(Interceptor interceptor)
方法,但是Spring框架中的代码Session session = (entityInterceptor != null ? sessionFactory.openSession(entityInterceptor) : sessionFactory.openSession())显示用到该方法,虽然调用这段代码的方法传进来的entityInterceptor就为null。。。网上搜索无果,所以最终在整合Spring的时候使用Hibernate-3.6.10.Final。详细错误信息见本目录下6),MySQL 5.5.28下的project数据库。
- user表的创建脚本。
[sql] view plaincopyprint? create table user( userId int auto_increment, userName varchar(16) not null, password varchar(16) not null, gender int not null, primary key(userId) );
- 使用Spring3.1时出现错误的详细信息。
[plain] view plaincopyprint? SEVERE: Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘sessionFactory‘ defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.NullPointerException at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1445) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:459) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:381) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4723) at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5226) at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5221) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.NullPointerException at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.scanPackages(LocalSessionFactoryBuilder.java:138) at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:294) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1504) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1442) ... 20 more 七月 13, 2013 6:48:44 下午 org.apache.catalina.core.StandardContext listenerStart SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘sessionFactory‘ defined in ServletContext resource [/WEB-INF/applicationContext.xml]: Invocation of init method failed; nested exception is java.lang.NullPointerException at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1445) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:459) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:381) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4723) at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5226) at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5221) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) at java.util.concurrent.FutureTask.run(FutureTask.java:166) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.NullPointerException at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.scanPackages(LocalSessionFactoryBuilder.java:138) at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:294) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1504) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1442) ... 20 more
- 整合Spring时候,使用Hibernate时点击注册报错信息。
[plain] view plaincopyprint? java.lang.reflect.InvocationTargetException sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:601) com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452) com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254) com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263) org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:270) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52) org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:498) org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77) org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91) root cause java.lang.NoSuchMethodError: org.hibernate.SessionFactory.openSession()Lorg/hibernate/classic/Session; org.springframework.orm.hibernate3.SessionFactoryUtils.doGetSession(SessionFactoryUtils.java:323) org.springframework.orm.hibernate3.SessionFactoryUtils.getSession(SessionFactoryUtils.java:235) org.springframework.orm.hibernate3.HibernateTemplate.getSession(HibernateTemplate.java:457) org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:392) org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374) org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:683) com.ynwi.ssh.daoImpl.UserDao.saveObject(UserDao.java:12) com.ynwi.ssh.serviceImpl.UserManagerImpl.regUser(UserManagerImpl.java:23) com.ynwi.ssh.action.RegisterAction.execute(RegisterAction.java:29) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:601) com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452) com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254) com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263) org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:270) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171) com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187) com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248) org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52) org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:498) org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77) org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
创建Struts项目
创建工程
- 在Eclipse中创建一个Dynamic Web Project,本文项目名称为SSHProject。
- 把Struts内apps文件夹下的struts2-blank war包用压缩工具解压,然后把WEB-INF/lib内的jar包和WEB-INF下的web.xml文件分别复制到SSHProject项目下的WEB-INF/lib内和WEB-INF下。
- 在src目录下创建相应package。
- 在WebContent下创建Register.jsp文件,并分别创建注册成功和注册失败的Success.jsp和Fail.jsp。
操作完成后的结构如图所示:
编写代码
- web.xml的内容。
[html] view plaincopyprint? <?xml version="1.0" encoding="UTF-8"?> <web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <display-name>SSH Project</display-name> <filter> <filter-name>SSH</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>SSH</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>index.html</welcome-file> </welcome-file-list> </web-app>
- Register.jsp的内容。
[html] view plaincopyprint? <%@ 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>User Register Page</title> </head> <body> <s:form action="register"> <s:textfield name="user.username" label="用户名"></s:textfield> <s:password name="user.password" label="密码"></s:password> <s:select list="#{‘1‘:‘男‘,‘0‘:‘女‘}" listKey="key" listValue="http://www.mamicode.com/value" name="user.gender" label="性别" value="http://www.mamicode.com/1"></s:select> <s:submit value="http://www.mamicode.com/注册"></s:submit> </s:form> </body> </html>
- 用户表单类UserForm.java的内容。
[java] view plaincopyprint?
package com.ynwi.ssh.beans; public class UserForm { private String username; private String password; private int gender; 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 int getGender() { return gender; } public void setGender(int gender) { this.gender = gender; } }
- 注册Action类RegisterAction.java的内容。
[java] view plaincopyprint?
package com.ynwi.ssh.action; import com.opensymphony.xwork2.ActionSupport; import com.ynwi.ssh.beans.UserForm; import com.ynwi.ssh.service.UserManager; import com.ynwi.ssh.serviceImpl.UserManagerImpl; public class RegisterAction extends ActionSupport { private static final long serialVersionUID = 1L; private UserForm user; private UserManager userManager; public UserForm getUser() { return user; } public void setUser(UserForm user) { this.user = user; } public UserManager getUserManager() { return userManager; } public void setUserManager(UserManager userManager) { this.userManager = userManager; } public String execute() { try { this.setUserManager(new UserManagerImpl()); userManager.regUser(user); return SUCCESS; } catch (Exception e) { e.printStackTrace(); return ERROR; } } }
- 验证文件RegisterAction-validation.xml的内容。该xml文件为RegisterAction的验证文件,命名格式固定,为< ActionName >-validation.xml。
[html] view plaincopyprint?
<?xml version="1.0" encoding="GBK"?> <!DOCTYPE validators PUBLIC "-//OpenSymphony Group//XWork Validator 1.0.2//EN" "http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd"> <validators> <!-- 添加对用户名的校验 --> <field name="user.username"> <field-validator type="requiredstring"> <param name="trim">true</param> <message>用户名不能为空</message> </field-validator> <field-validator type="regex"> <param name="expression"><![CDATA[(\w{6,16})]]></param> <message>用户名输入不合法,必须为长度在6~16中间的数字或字母</message> </field-validator> </field> <!-- 添加对密码的校验 --> <field name="user.password"> <field-validator type="requiredstring"> <param name="trim">true</param> <message>密码不能为空</message> </field-validator> <field-validator type="regex"> <param name="expression"><![CDATA[(\w{6,16})]]></param> <message>密码输入不合法,必须为长度在6~16之间的数字或者字母</message> </field-validator> </field> </validators>
- 业务逻辑接口UserManaer.java的内容。
[java] view plaincopyprint?
package com.ynwi.ssh.service; import com.ynwi.ssh.beans.UserForm; public interface UserManager { public void regUser(UserForm user); }
- 业务逻辑实现类UserManagerImpl.java的内容
[java] view plaincopyprint?
package com.ynwi.ssh.serviceImpl; import com.ynwi.ssh.beans.UserForm; import com.ynwi.ssh.service.UserManager; public class UserManagerImpl implements UserManager { @Override public void regUser(UserForm user) { } }
- 配置文件struts.xml的内容。
[html] view plaincopyprint?
<?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> <include file="struts-default.xml" /> <package name="ynwi" extends="struts-default"> <action name="register" class="com.ynwi.ssh.action.RegisterAction"> <result name="input">/Register.jsp</result> <result name="success">/Success.jsp</result> <result name="error">/Fail.jsp</result> </action> </package> </struts>
Success.jsp和Fail.jsp仅仅只是一句提示注册成功和失败的话,这里就不在列出。
运行效果
- 输入访问Register.jsp的地址http://localhost:9090/SSHProject/Register.jsp后。
- 输入用户名和密码不合法时。
- 注册成功时。
在Struts基础上整合Hibernate
整合Hibernate
- 将Hibernate内的lib/required下的jar包和lib/jpa下的jar包复制到SSHProject项目的lib目录下。
- 在上面Struts项目的基础上添加com.ynwi.ssh.dao和com.ynwi.ssh.daoImpl包。分别创建BaseDao接口和UserDao类。
- 在数据库中创建对应的表user来写入要注册的用户。创建表的脚本见前言说明部分。
- 创建user表的Hibernate映射文件。因为这里要创建user表对应的POJO类,所以我这里把之前com.ynwi.ssh.beans包改成com.ynwi.ssh.forms包,用来存放页面传过来的表单数据,新创建com.ynwi.ssh.beans包,用来创建POJO对象来对应数据库中的表。路径:POJO类同目录。
- 建立Hibernate配置文件。路径:src目录下。
- 编写Session工厂类。整合Spring后,数据源的创建和SessionFactory的创建都交给Spring去管理,就无需这个工厂类了,所以这里我临时创建在daoImpl包里面。
- 修改业务逻辑实现类。
操作完成后的结构如图所示:
编写代码
- 接口类BaseDao.java的内容。注意:接口里的两个get/set方法是为了让实现类覆盖。这样使用BaseDao dao = new UserDao()的时候,dao实体中有这两个方法。
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package com.ynwi.ssh.dao; import org.hibernate.HibernateException; import org.hibernate.Session; public interface BaseDao { public void saveObject(Object obj) throws HibernateException; public Session getSession(); public void setSession(Session session); }
- 实现类UserDao.java的内容。
[java] view plaincopyprint?
package com.ynwi.ssh.daoImpl; import org.hibernate.HibernateException; import org.hibernate.Session; import com.ynwi.ssh.dao.BaseDao; public class UserDao implements BaseDao { private Session session; @Override public Session getSession() { return session; } @Override public void setSession(Session session) { this.session = session; } @Override public void saveObject(Object obj) throws HibernateException { session.save(obj); } }
- 表user的POJO类User.java的内容,因为跟UserForm.java内容差不多,所以不再列出。这个比UserForm.java多一个userId属性,因为在表user里面有userId的column。在POJO类里需要跟这个column有映射。
- POJO类User.java的Hibernate映射文件User.hbm.xml的内容。代码<generator class="native"></generator>说明将根据本地数据库的设置来创建userId,如MySQL中将表user的userId设置为自动增长,则在保存记录是,userId将自动增长。对于需要在程序中指定主键的值,则将generator的class属性设置为assigned。
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<?xml version="1.0" encoding=‘UTF-8‘?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" > <hibernate-mapping package="com.ynwi.ssh.beans"> <class name="User" table="user"> <id name="userId" column="userId"> <generator class="native"></generator> </id> <property name="username" column="userName" type="java.lang.String" not-null="true" length="16"></property> <property name="password" column="password" type="java.lang.String" not-null="true" length="16" /> <property name="gender" column="gender" type="java.lang.Integer" length="1" /> </class> </hibernate-mapping>
- Hibernate配置文件Hibernate.cfg.xml的内容。
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<?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> <!-- Database connection settings --> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <property name="connection.url">jdbc:mysql://localhost:3306/project</property> <property name="connection.username">root</property> <property name="connection.password">root</property> <!-- JDBC connection pool (use the built-in) --> <!-- <property name="connection.pool_size">1</property> --> <!-- SQL dialect --> <property name="dialect">org.hibernate.dialect.MySQLDialect</property> <!-- Enable Hibernate‘s automatic session context management --> <!-- <property name="current_session_context_class">thread</property> --> <!-- Disable the second-level cache --> <!-- <property name="cache.provider_class">org.hibernate.cache.internal.NoCacheProvider</property> --> <!-- Echo all executed SQL to stdout --> <property name="show_sql">true</property> <!-- Drop and re-create the database schema on startup --> <!-- <property name="hbm2ddl.auto">update</property> --> <mapping resource="com/ynwi/ssh/beans/User.hbm.xml"/> </session-factory> </hibernate-configuration>
- 工厂类SessionFactory的内容。(这是使用Hibernate4时候的SessionFactory,Hibernate3时候sessionFactory的创建估计会不一样,请自行查阅。)
[java] view plaincopyprint?
package com.ynwi.ssh.daoImpl; import org.hibernate.HibernateException; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import org.hibernate.service.ServiceRegistry; import org.hibernate.service.ServiceRegistryBuilder; public class HibernateSessionFactory { private static final String CFG_FILE_LOCATION = "/Hibernate.cfg.xml"; private static final ThreadLocal<Session> threadLocal = new ThreadLocal<Session>(); private static final Configuration cfg = new Configuration() .configure(CFG_FILE_LOCATION); private static ServiceRegistryBuilder builder = new ServiceRegistryBuilder() .applySettings(cfg.getProperties()); private static ServiceRegistry registry; private static SessionFactory sessionFactory; public static Session currentSession() throws HibernateException { Session session = threadLocal.get(); if (session == null || session.isOpen() == false) { if (sessionFactory == null) { try { registry = builder.buildServiceRegistry(); sessionFactory = cfg.buildSessionFactory(registry); } catch (Exception e) { e.printStackTrace(); } } session = sessionFactory.openSession(); threadLocal.set(session); } return session; } public static void closeSession() throws HibernateException { Session session = threadLocal.get(); threadLocal.set(null); if (session != null) { session.close(); } } }
- 修改后的业务逻辑实现类的内容。
[java] view plaincopyprint?
package com.ynwi.ssh.serviceImpl; import org.hibernate.HibernateException; import org.hibernate.Session; import org.hibernate.Transaction; import com.ynwi.ssh.beans.User; import com.ynwi.ssh.dao.BaseDao; import com.ynwi.ssh.daoImpl.HibernateSessionFactory; import com.ynwi.ssh.daoImpl.UserDao; import com.ynwi.ssh.forms.UserForm; import com.ynwi.ssh.service.UserManager; public class UserManagerImpl implements UserManager { private BaseDao dao; private Session session; public UserManagerImpl() { dao = new UserDao(); } @Override public void regUser(UserForm userForm) throws HibernateException { session = HibernateSessionFactory.currentSession(); dao.setSession(session); // 获取事务 Transaction ts = session.beginTransaction(); // 构造User对象 User user = new User(); user.setUsername(userForm.getUsername()); user.setPassword(userForm.getPassword()); user.setGender(userForm.getGender()); // 保存User对象 dao.saveObject(user); // 提交事务 ts.commit(); // 关闭Session HibernateSessionFactory.closeSession(); } }
运行效果
- 输入访问Register.jsp的地址http://localhost:9090/SSHProject/Register.jsp后。
- 点击注册前后数据库里面的数据。
在Struts + Hibernate项目中整合Spring
整合Spring
- 将Spring内libs目录下包含所有的jar包(不需要复制结尾为sources和javadoc的jar包)到SSHProject项目的lib目录下。
- 编写Spring的配置文件applicationContext.xml。路径:src目录下,需要在web.xml配置context-param指定路径,或者把该文件放在WEB-INF下,跟web.xml同目录。这里由于Spring配置数据源的需要,需要把Hibernate内lib/optional/c3p0下的c3p0-0.9.1.jar复制到lib不目下。
- 修改BaseDao和UserDao。在引入Spring后,需要用Spring进行统一的事务管理,数据源和sessionFactory都交给Spring去生成,因此接口类和实现类BaseDao和UserDao都需要做相应的修改。Spring提供了HibernateDaoSupport类来完成对数据的操作,因此UserDao在实现BaseDao的同时还需要继承HibernateDaoSupport类。并将先前session的操作修改成HibernateTemplate(可通过getHibernateTemplate()方法来获得)的操作。
- 修改业务逻辑实现类。在没有加入Spring之前,业务逻辑实现类的Session的获得,dao的实例化,以及事务的管理都是该类执行管理的。加入Spring后,这些都交给Spring去管理。该类的dao的实例化由Spring注入。
- 修改用户注册的RegisterAction类。同样,RegisterAction类中的userManager的实例化也由Spring注入。
- 删除Hibernate的配置文件Hibernate.cfg.xml和工厂类HibernateSesseionFactory类。他们的工作已经交给Spring去做,已经不再有用。
- 修改web.xml,加载Spring。要想启动时加载Spring的配置文件,需要在web.xml中配置对应的监听器(listenser),并制定Spring的配置文件。
- 修改Struts的配置文件struts.xml。把原来指定的名为register的action的class由原来的路径变为applicationContext.xml文件中该Action的id。
操作完成后的结构如图所示:
编写代码
- Spring的配置文件applicationContext.xml的内容。
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<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd"> <!-- 定义数据源的信息 --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <property name="driverClass"> <value>com.mysql.jdbc.Driver</value> </property> <property name="jdbcUrl"> <value>jdbc:mysql://localhost/project</value> </property> <property name="user"> <value>root</value> </property> <property name="password"> <value>root</value> </property> <property name="maxPoolSize"> <value>80</value> </property> <property name="minPoolSize"> <value>1</value> </property> <property name="initialPoolSize"> <value>1</value> </property> <property name="maxIdleTime"> <value>20</value> </property> </bean> <!--定义Hibernate的SessionFactory --> <!-- SessionFactory使用的数据源为上面的数据源 --> <!-- 指定了Hibernate的映射文件和配置信息 --> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource"> <ref local="dataSource" /> </property> <property name="mappingResources"> <list> <value>com/ynwi/ssh/beans/User.hbm.xml</value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="show_sql">true</prop> <prop key="hibernate.jdbc.batch_size">20</prop> </props> </property> </bean> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> <bean id="baseDao" class="com.ynwi.ssh.daoImpl.UserDao"> <property name="sessionFactory"> <ref bean="sessionFactory" /> </property> </bean> <!--用户注册业务逻辑类 --> <bean id="userManager" class="com.ynwi.ssh.serviceImpl.UserManagerImpl"> <property name="dao"> <ref bean="baseDao" /> </property> </bean> <!-- 用户注册的Action --> <bean id="regAction" class="com.ynwi.ssh.action.RegisterAction"> <property name="userManager"> <ref bean="userManager" /> </property> </bean> <!-- more bean definitions go here --> </beans>
- 修改后的接口类Dao和实现类UserDao的内容。
BaseDao.java
[java] view plaincopyprint?
package com.ynwi.ssh.dao; import org.hibernate.HibernateException; public interface BaseDao { public void saveObject(Object obj) throws HibernateException; }
UserDao.java
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package com.ynwi.ssh.daoImpl; import org.hibernate.HibernateException; import org.springframework.orm.hibernate3.support.HibernateDaoSupport; import com.ynwi.ssh.dao.BaseDao; public class UserDao extends HibernateDaoSupport implements BaseDao { @Override public void saveObject(Object obj) throws HibernateException { getHibernateTemplate().save(obj); } }
- 修改后的业务逻辑实现类UserManagerImpl的内容。
[java] view plaincopyprint?
package com.ynwi.ssh.serviceImpl; import org.hibernate.HibernateException; import org.springframework.beans.BeanUtils; import com.ynwi.ssh.beans.User; import com.ynwi.ssh.dao.BaseDao; import com.ynwi.ssh.forms.UserForm; import com.ynwi.ssh.service.UserManager; public class UserManagerImpl implements UserManager { private BaseDao dao; public void setDao(BaseDao dao) { this.dao = dao; } @Override public void regUser(UserForm userForm) throws HibernateException { User user = new User(); BeanUtils.copyProperties(userForm, user); dao.saveObject(user); } }
- 修改后的用户注册Action类RegisterAction的内容。
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package com.ynwi.ssh.action; import com.opensymphony.xwork2.ActionSupport; import com.ynwi.ssh.forms.UserForm; import com.ynwi.ssh.service.UserManager; public class RegisterAction extends ActionSupport { private static final long serialVersionUID = 1L; private UserForm user; private UserManager userManager; public UserForm getUser() { return user; } public void setUser(UserForm user) { this.user = user; } public void setUserManager(UserManager userManager) { this.userManager = userManager; } public String execute() { try { userManager.regUser(user); return SUCCESS; } catch (Exception e) { e.printStackTrace(); return ERROR; } } }
- 修改后的web.xml的内容。
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<?xml version="1.0" encoding="UTF-8"?> <web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"> <display-name>SSH Project</display-name> <filter> <filter-name>SSH</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>SSH</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <welcome-file-list> <welcome-file>index.html</welcome-file> </welcome-file-list> </web-app>
- 修改后的Struts配置文件struts.xml的内容。
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<?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> <include file="struts-default.xml" /> <package name="ynwi" extends="struts-default"> <action name="register" class="regAction"> <result name="input">/Register.jsp</result> <result name="success">/Success.jsp</result> <result name="error">/Fail.jsp</result> </action> </package> </struts>
运行结果
- 输入访问Register.jsp的地址http://localhost:9090/SSHProject/Register.jsp后。
- 点击注册前后数据库里面的数据。
总结
唠叨
本来想创建Struts2 + Spring3 + Hibernate4的项目,结果行动之后才发现版本之间不兼容的现象挺严重(我自己是这么认为的,如果有大神看出来是我开发中出的问题导致麻烦告知下),不得不把Hibernate4换成Hibernate3。因为中间换框架,所以导致此博文中整合Hibernate部分是否会报错,不过最终的项目是可以执行的。我会把项目打包上传到csdn资源上。可以点击这里下载。
如何快速开发SSH框架项目
- 创建Dynamic Web Project并且导入jar包。
- 我习惯上把classes文件夹由build文件夹内转移到WEB-INF下。在项目上右键Build Path——〉Configure Build Path。设置Default output folder。
- 在WEB_INF下面创建web.xml并配置Struts的Filter和Spring的Listener。
- 在WEB-INF下面创建applicationContext.xml并配置数据源,sessionFactory,Transaction以及各Beans信息。
- 在src目录下创建struts.xml用来配置action信息,模板可以从Struts空项目里面拿。这里的action对应的class应该为applicationContext.xml内对应的class的bean的id。
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