转载 Eclipse下的SSH开发例子

阅读量：5934 次

发布时间：2019-06-19

本文共 36948 字，大约阅读时间需要 123 分钟。

前言

确实好久没有写过了，一直以来把写博文当作自己学习的总结，当作做过的笔记，随时都可以拿出来看看。不过最近习惯了用OneNote和印象笔记，所以就很少在论坛写博文。但是偶尔看到几篇被转载了，也小小的虚荣了下。这种虚荣大神们已经习以为常，他们是不能理解的。

好吧，转入正题。

参加工作从事Java Web开发将近两年，也没有完整的搭建出一个SSH框架的项目，说出来确实有点不好意思，并且前一段一个朋友问我搭建过SSH框架没，我都没有好意思说没有。所以才有了搭建一个SSH框架项目的想法，因此有了今天的这篇博文。

这篇博文的目的

尝试搭建一个完整的SSH框架项目。

给以后的自己，也给别人一个参考。

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]
1. create table user(
2. userId int auto_increment,
3. userName varchar(16) not null,
4. password varchar(16) not null,
5. gender int not null,
6. primary key(userId)
7. );

使用Spring3.1时出现错误的详细信息。
[plain]
1. SEVERE: Context initialization failed
2. 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
3. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1445)
4. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
5. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:459)
6. at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
7. at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
8. at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
9. at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
10. at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567)
11. at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
12. at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
13. at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:381)
14. at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283)
15. at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
16. at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4723)
17. at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5226)
18. at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5221)
19. at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
20. at java.util.concurrent.FutureTask.run(FutureTask.java:166)
21. at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
22. at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
23. at java.lang.Thread.run(Thread.java:722)
24. Caused by: java.lang.NullPointerException
25. at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.scanPackages(LocalSessionFactoryBuilder.java:138)
26. at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:294)
27. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1504)
28. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1442)
29. ... 20 more
31. 七月 13, 2013 6:48:44 下午 org.apache.catalina.core.StandardContext listenerStart
32. SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
33. 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
34. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1445)
35. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:522)
36. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:459)
37. at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:294)
38. at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:225)
39. at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:291)
40. at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
41. at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:567)
42. at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
43. at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:464)
44. at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:381)
45. at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283)
46. at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
47. at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4723)
48. at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5226)
49. at org.apache.catalina.core.StandardContext$1.call(StandardContext.java:5221)
50. at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
51. at java.util.concurrent.FutureTask.run(FutureTask.java:166)
52. at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
53. at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
54. at java.lang.Thread.run(Thread.java:722)
55. Caused by: java.lang.NullPointerException
56. at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.scanPackages(LocalSessionFactoryBuilder.java:138)
57. at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:294)
58. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1504)
59. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1442)
60. ... 20 more

整合Spring时候，使用Hibernate时点击注册报错信息。
[plain]
1. java.lang.reflect.InvocationTargetException
2. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
3. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
4. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
5. java.lang.reflect.Method.invoke(Method.java:601)
6. com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452)
7. com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291)
8. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254)
9. com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
10. com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
11. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
12. com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263)
13. org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
14. com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
15. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
16. com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
17. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
18. com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
19. com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
20. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
21. com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
22. com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
23. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
24. com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)
25. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
26. org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
27. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
28. org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
29. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
30. org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243)
31. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
32. com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
33. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
34. com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
35. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
36. org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:270)
37. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
38. com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
39. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
40. com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
41. com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
42. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
43. com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
44. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
45. org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
46. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
47. com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190)
48. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
49. com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
50. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
51. org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
52. org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:498)
53. org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
54. org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
56. root cause
58. java.lang.NoSuchMethodError: org.hibernate.SessionFactory.openSession()Lorg/hibernate/classic/Session;
59. org.springframework.orm.hibernate3.SessionFactoryUtils.doGetSession(SessionFactoryUtils.java:323)
60. org.springframework.orm.hibernate3.SessionFactoryUtils.getSession(SessionFactoryUtils.java:235)
61. org.springframework.orm.hibernate3.HibernateTemplate.getSession(HibernateTemplate.java:457)
62. org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:392)
63. org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
64. org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:683)
65. com.ynwi.ssh.daoImpl.UserDao.saveObject(UserDao.java:12)
66. com.ynwi.ssh.serviceImpl.UserManagerImpl.regUser(UserManagerImpl.java:23)
67. com.ynwi.ssh.action.RegisterAction.execute(RegisterAction.java:29)
68. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
69. sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
70. sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
71. java.lang.reflect.Method.invoke(Method.java:601)
72. com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452)
73. com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291)
74. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254)
75. com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
76. com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
77. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
78. com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263)
79. org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
80. com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
81. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
82. com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
83. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
84. com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
85. com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
86. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
87. com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
88. com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
89. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
90. com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)
91. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
92. org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
93. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
94. org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
95. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
96. org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243)
97. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
98. com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
99. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
100. com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
101. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
102. org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:270)
103. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
104. com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
105. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
106. com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
107. com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
108. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
109. com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
110. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
111. org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
112. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
113. com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190)
114. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
115. com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
116. com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
117. org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
118. org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:498)
119. org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
120. 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]

<?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>

[html]

<%@ 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="value"

name="user.gender" label="性别" value="1"></s:select>

<s:submit value="注册"></s:submit>

</s:form>

</body>

</html>

用户表单类UserForm.java的内容。

[java]

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]

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]

<?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>

<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>

<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]

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]

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]

<?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。

[java]

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]

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。

[html]

<?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。

[html]

<?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>

<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>

<property name="dialect">org.hibernate.dialect.MySQLDialect</property>

<property name="show_sql">true</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]

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]

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。

[html]

<?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">

<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>

<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>

<bean id="userManager" class="com.ynwi.ssh.serviceImpl.UserManagerImpl">

<property name="dao">

<ref bean="baseDao" />

</property>

</bean>

<bean id="regAction" class="com.ynwi.ssh.action.RegisterAction">

<property name="userManager">

<ref bean="userManager" />

</property>

</bean>

</beans>

修改后的接口类Dao和实现类UserDao的内容。

BaseDao.java

[java]

package com.ynwi.ssh.dao;

import org.hibernate.HibernateException;

public interface BaseDao {

public void saveObject(Object obj) throws HibernateException;

}

UserDao.java

[java]

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]

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。

[java]

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。

[html]

<?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。

[html]

<?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。可以下载。

如何快速开发SSH框架项目

1. 创建Dynamic Web Project并且导入jar包。
2. 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。
3. 在WEB_INF下面创建web.xml并配置Struts的Filter和Spring的Listener。
4. 在WEB-INF下面创建applicationContext.xml并配置数据源，sessionFactory，Transaction以及各Beans信息。
5. 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。