Struts2.3.16.1+Hibernate4.3.4+Spring4.0.2 框架整合
最新版Struts2+Hibernate+Spring整合
目前为止三大框架最新版本是：
struts2.3.16.1
hibernate4.3.4
spring4.0.2
其中struts2和hibernate的下载方式比较简单，但是spring下载有点麻烦，可以直接复制下面链接下载最新版spring
一. 所需的jar包（其中aopaliance-1.0.jar，是spring所依赖的jar，直接复制粘贴到谷歌百度就有的下载）
| 框架 |
版本 |
所需jar包 |
| Struts2 |
2.3.16.1 |
 |
| Hibernate |
4.3.4 |
| spring |
4.0.2 |
| 其它 |
无 |
二. 创建一张表
CREATE TABLE `user` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`user_name` varchar(20) DEFAULT NULL,
`password` varchar(20) DEFAULT NULL,
`address` varchar(100) DEFAULT NULL,
`phone_number` varchar(20) DEFAULT NULL,
`create_time` datetime DEFAULT NULL,
`update_time` datetime DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULTCHARSET=utf8;
---并插入一条数据
INSERT INTO `user` VALUES ("1', 'test','test', 'test', 'test', '2014-03-29 00:48:14', '2014-03-29 00:48:17');
三. 先看下myeclipse的目录结构
四. 配置文件
1. web.xml
<!--?xml version="1.0" encoding="UTF-8"?-->
<web-app version="3.0" 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_3_0.xsd">
<display-name></display-name>
<!-- 添加对spring的支持 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 添加对struts2的支持 -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<!-- 当hibernate+spring配合使用的时候，如果设置了lazy=true,那么在读取数据的时候，当读取了父数据后，
hibernate会自动关闭session，这样，当要使用子数据的时候，系统会抛出lazyinit的错误，
这时就需要使用spring提供的 OpenSessionInViewFilter,OpenSessionInViewFilter主要是保持Session状态
知道request将全部页面发送到客户端，这样就可以解决延迟加载带来的问题 -->
<filter>
<filter-name>openSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
<init-param>
<param-name>singleSession</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-mapping>
<filter-name>openSessionInViewFilter</filter-name>
<url-pattern>*.do,*.action</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
2. 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"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<!-- 加载数据库属性配置文件 -->
<context:property-placeholder location="classpath:db.properties" />
<!-- 数据库连接池c3p0配置 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="jdbcUrl" value="${db.url}"></property>
<property name="driverClass" value="${db.driverClassName}"></property>
<property name="user" value="${db.username}"></property>
<property name="password" value="${db.password}"></property>
<property name="maxPoolSize" value="40"></property>
<property name="minPoolSize" value="1"></property>
<property name="initialPoolSize" value="1"></property>
<property name="maxIdleTime" value="20"></property>
</bean>
<!-- session工厂 -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="configLocation" value="classpath:hibernate.cfg.xml"/>
<!-- 自动扫描注解方式配置的hibernate类文件 -->
<property name="packagesToScan">
<list>
<value>com.bufoon.entity</value>
</list>
</property>
</bean>
<!-- 配置事务管理器 -->
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<!-- 配置事务通知属性 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<!-- 定义事务传播属性 -->
<tx:attributes>
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="edit*" propagation="REQUIRED" />
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="new*" propagation="REQUIRED" />
<tx:method name="set*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="change*" propagation="REQUIRED" />
<tx:method name="get*" propagation="REQUIRED" read-only="true" />
<tx:method name="find*" propagation="REQUIRED" read-only="true" />
<tx:method name="load*" propagation="REQUIRED" read-only="true" />
<tx:method name="*" propagation="REQUIRED" read-only="true" />
</tx:attributes>
</tx:advice>
<!-- 应用普通类获取bean
<bean id="appContext" class="com.soanl.util.tool.ApplicationUtil"/>-->
<!-- 配置事务切面 -->
<aop:config>
<aop:pointcut id="serviceOperation"
expression="execution(* com.bufoon.service..*.*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="serviceOperation" />
</aop:config>
<!-- 自动加载构建bean -->
<context:component-scan base-package="com.bufoon" />
</beans>
3. db.properties
db.driverClassName=com.mysql.jdbc.Driver db.url=jdbc:mysql://localhost:3306/test db.username=root db.password=root
4. hibernate.cfg.xml
<!--?xml version='1.0' encoding='UTF-8'?-->
<hibernate-configuration>
<session-factory>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="jdbc.batch_size">20</property>
<property name="connection.autocommit">true</property>
<!-- 显示sql语句 -->
<property name="show_sql">true</property>
<property name="connection.useUnicode">true</property>
<property name="connection.characterEncoding">UTF-8</property>
<!-- 缓存设置 -->
<property name="cache.provider_configuration_file_resource_path">/ehcache.xml</property>
<property name="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory</property>
<property name="cache.use_query_cache">true</property>
</session-factory>
</hibernate-configuration>
5. struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
"http://struts.apache.org/dtds/struts-2.1.7.dtd">
<struts>
<!-- 配置为开发模式 -->
<constant name="struts.devMode" value="false" />
<!-- 配置扩展名为action -->
<constant name="struts.action.extension" value="action" />
<!-- 配置主题 -->
<constant name="struts.ui.theme" value="simple" />
<!-- 配置上传文件大小此处默认为20M -->
<constant name="struts.multipart.maxSize" value="2097152" />
<!-- 国际化编码 -->
<constant name="struts.i18n.encoding" value="UTF-8" />
<!-- 定位视图资源的根路径。默认值为/WEB-INF/content -->
<constant value="/WEB-INF/templates" name="struts.convention.result.path" />
<!-- 指定convention扫描以xxx结尾的包 -->
<constant value="action" name="struts.convention.package.locators" />
<!-- 是否将Action类转换成小写 -->
<constant value="false" name="struts.convention.package.lowercase" />
<!-- 是否将actionName分割,去掉action部分,以大写字母作为分割 -->
<constant name="struts.convention.action.name.separator" value="_" />
<!-- 浏览器是否缓存静态内容 ，开发阶段最好关闭-->
<constant name="struts.serve.static.browserCache" value="false"/>
<!-- 当struts的配置文件修改后,系统是否自动重新加载该文件,默认值为false(生产环境下使用),开发阶段最好打开 -->
<constant name="struts.configuration.xml.reload" value="true"/>
<!-- 配置使用Spring管理Action -->
<constant name="struts.objectFactory" value="spring"/>
<!-- 让struts2始终先考虑spring的自动装箱 -->
<constant name="struts.objectFactory.spring.autoWire.alwaysRespect" value="true" />
<!-- 设置默认的父包
<constant value="MAIN" name="struts.convention.default.parent.package" />
<package name="MAIN" extends="struts-default" namespace="/">
</package>
-->
<package name="default" namespace="/" extends="struts-default">
<interceptors>
<!-- 声明一个拦截器 进行登录检查 -->
<interceptor name="checkePrivilege" class="com.oa168.interceptor.CheckPrivilegeInterceptor"></interceptor>
<!-- 重新定义defaultStack拦截器栈，需要先判断权限 -->
<interceptor-stack name="defaultStack">
<interceptor-ref name="checkePrivilege" />
<interceptor-ref name="defaultStack" />
</interceptor-stack>
</interceptors>
<!-- 配置全局的Result -->
<global-results>
<result name="loginUI">/WEB-INF/jsp/userAction/loginUI.jsp</result>
<result name="noPrivilegeError">/noPrivilegeError.jsp</result>
</global-results>
<!-- 测试用的action，当与Spring整合后，class属性写的就是Spring中bean的名称
不需要写com.oa168.test.TestAction形式
所以整合就是在Action类中加入@Controller @Scope("prototype")
并在Web.xml中加入监听器
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext*.xml</param-value>
</context-param>
-->
<action name="test" class="testAction">
<result name="success">/test.jsp</result>
</action>
<!-- 首页 -->
<action name="homeAction_*" class="homeAction" method="{1}">
<result name="{1}">/WEB-INF/jsp/homeAction/{1}.jsp</result>
<!--
<result name="index">/WEB-INF/jsp/homeAction/Index.jsp</result>
<result name="top">/WEB-INF/jsp/homeAction/Top.jsp</result>
<result name="bottom">/WEB-INF/jsp/homeAction/Bottom.jsp</result>
<result name="left">/WEB-INF/jsp/homeAction/Left.jsp</result>
<result name="mainFrame">/WEB-INF/jsp/homeAction/MainFrame.jsp</result> -->
</action>
</package>
</struts>
FreeMark的配置
为了在FreeMarker模板中使用标签库，可按如下步骤进行
1.将struts-tags.tld文件复制到WEB-INF目录下
即将系统所需的标签库定义文件(*.tld文件)复制到web应用中。对于基于struts2框架的JAVA_Web应用，则需要将Struts2-core.jar包解压，取出其中的struts-tags.tld文件，并复制到web应用的WEB-INF目录下。同时所需的最少Jar包如下图
2.在web.xml文件中启动JspSupportServlet
在web.xml文件中作如下配置，如下：
<servlet>
<servlet-name>JspSupportServlet</servlet-name>
<servlet-class>org.apache.struts2.views.JspSupportServlet</servlet-class>
<!--配置JspSupportServlet自启动-->
<load-on-startup>1</load-on-startup>
</servlet>
此配置本人没配FreeMark一样可以，具体用处有待研究。
3. 在FreeMarker模板文件中使用“assign指令”导入标签库
导入标签库的代码如下：
<#--定义web-inf/strust-tags.tld文件对应的标签库前缀为s--> <#assigns=JspTaglibs["/WEB-INF/struts-tags.tld"]/>
说明：在上面导入的标签库定义文件中，指定了标签库前缀为s,而该前缀对应的标签库定义文件主放置在/WEB-INF/struts-tags.tld路径下、
4.完毕
经过上述步骤后，即可在应用的FreeMarker模板中使用Struts2标签。在FreeMarker模板中增加了标签库定义后，就可以在FreeMarker模板中使用Struts2标签了。在FreeMarker使用标签与在jsp中使用标签略有差别.
补充说明
我们不能直接通过浏览器直接请求该页面，否则看到的不是我们想要的结果，而是该模板页面的源代码（因为WEB容器默认不会处理 FreeMarker模板页面）。
正如前面使用FreeMarker模板作为视图组件时看到的，FreeMarker作为视图组件是由Servlet负责加载该模板，并使用数据模型填充该模板，并且填充后的标准HTML响应输出给浏览者。
在Strtus2框架的支持下，Struts2框架充当了之前的Servlet角色，只要浏览者的请求经过了Struts2处理后，Struts2框架就会自动加载FreeMarker模板，并使用数据模型填充该模板，并且将最后的HTML页面输出给浏览者.。
为了让所有的用户请求都经过Struts2框架处理，我们将所有的FreeMarker模板文件放在web-inf/ftl路径下.
因为浏览者无法直接访问web-inf/ftl路径下的资源，所以我们在struts.xml配置文中增加了如下配置片段：
<action name="*">
<result type="freemarker">/WEB-INF/ftl/{1}.ftl</result>
</action>
也就是把原来的Action中的result属性中type值改成“freemarker”
五. JAVA类
1.BaseDAO.java(网上找的一个)
package com.bufoon.dao;
import java.io.Serializable;
import java.util.List;
/**
* 基础数据库操作类
*
* @author ss
*
*/
public interface BaseDAO<T> {
/**
* 保存一个对象
*
* @param o
* @return
*/
public Serializable save(T o);
/**
* 删除一个对象
*
* @param o
*/
public void delete(T o);
/**
* 更新一个对象
*
* @param o
*/
public void update(T o);
/**
* 保存或更新对象
*
* @param o
*/
public void saveOrUpdate(T o);
/**
* 查询
*
* @param hql
* @return
*/
public List<T> find(String hql);
/**
* 查询集合
*
* @param hql
* @param param
* @return
*/
public List<T> find(String hql, Object[] param);
/**
* 查询集合
*
* @param hql
* @param param
* @return
*/
public List<T> find(String hql, List<Object> param);
/**
* 查询集合(带分页)
*
* @param hql
* @param param
* @param page
* 查询第几页
* @param rows
* 每页显示几条记录
* @return
*/
public List<T> find(String hql, Object[] param, Integer page, Integer rows);
/**
* 查询集合(带分页)
*
* @param hql
* @param param
* @param page
* @param rows
* @return
*/
public List<T> find(String hql, List<Object> param, Integer page, Integer rows);
/**
* 获得一个对象
*
* @param c
* 对象类型
* @param id
* @return Object
*/
public T get(Class<T> c, Serializable id);
/**
* 获得一个对象
*
* @param hql
* @param param
* @return Object
*/
public T get(String hql, Object[] param);
/**
* 获得一个对象
*
* @param hql
* @param param
* @return
*/
public T get(String hql, List<Object> param);
/**
* select count(*) from 类
*
* @param hql
* @return
*/
public Long count(String hql);
/**
* select count(*) from 类
*
* @param hql
* @param param
* @return
*/
public Long count(String hql, Object[] param);
/**
* select count(*) from 类
*
* @param hql
* @param param
* @return
*/
public Long count(String hql, List<Object> param);
/**
* 执行HQL语句
*
* @param hql
* @return 响应数目
*/
public Integer executeHql(String hql);
/**
* 执行HQL语句
*
* @param hql
* @param param
* @return 响应数目
*/
public Integer executeHql(String hql, Object[] param);
/**
* 执行HQL语句
*
* @param hql
* @param param
* @return
*/
public Integer executeHql(String hql, List<Object> param);
}
2. BaseDAOImpl.java
package com.bufoon.dao.impl;
import java.io.Serializable;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
import com.bufoon.dao.BaseDAO;
@Repository("baseDAO")
@SuppressWarnings("all")
public class BaseDAOImpl<T> implements BaseDAO<T> {
private SessionFactory sessionFactory;
public SessionFactory getSessionFactory() {
return sessionFactory;
}
@Autowired
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
private Session getCurrentSession() {
return sessionFactory.getCurrentSession();
}
public Serializable save(T o) {
return this.getCurrentSession().save(o);
}
public void delete(T o) {
this.getCurrentSession().delete(o);
}
public void update(T o) {
this.getCurrentSession().update(o);
}
public void saveOrUpdate(T o) {
this.getCurrentSession().saveOrUpdate(o);
}
public List<T> find(String hql) {
return this.getCurrentSession().createQuery(hql).list();
}
public List<T> find(String hql, Object[] param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.length > 0) {
for (int i = 0; i < param.length; i++) {
q.setParameter(i, param[i]);
}
}
return q.list();
}
public List<T> find(String hql, List<Object> param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.size() > 0) {
for (int i = 0; i < param.size(); i++) {
q.setParameter(i, param.get(i));
}
}
return q.list();
}
public List<T> find(String hql, Object[] param, Integer page, Integer rows) {
if (page == null || page < 1) {
page = 1;
}
if (rows == null || rows < 1) {
rows = 10;
}
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.length > 0) {
for (int i = 0; i < param.length; i++) {
q.setParameter(i, param[i]);
}
}
return q.setFirstResult((page - 1) * rows).setMaxResults(rows).list();
}
public List<T> find(String hql, List<Object> param, Integer page, Integer rows) {
if (page == null || page < 1) {
page = 1;
}
if (rows == null || rows < 1) {
rows = 10;
}
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.size() > 0) {
for (int i = 0; i < param.size(); i++) {
q.setParameter(i, param.get(i));
}
}
return q.setFirstResult((page - 1) * rows).setMaxResults(rows).list();
}
public T get(Class<T> c, Serializable id) {
return (T) this.getCurrentSession().get(c, id);
}
public T get(String hql, Object[] param) {
List<T> l = this.find(hql, param);
if (l != null && l.size() > 0) {
return l.get(0);
} else {
return null;
}
}
public T get(String hql, List<Object> param) {
List<T> l = this.find(hql, param);
if (l != null && l.size() > 0) {
return l.get(0);
} else {
return null;
}
}
public Long count(String hql) {
return (Long) this.getCurrentSession().createQuery(hql).uniqueResult();
}
public Long count(String hql, Object[] param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.length > 0) {
for (int i = 0; i < param.length; i++) {
q.setParameter(i, param[i]);
}
}
return (Long) q.uniqueResult();
}
public Long count(String hql, List<Object> param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.size() > 0) {
for (int i = 0; i < param.size(); i++) {
q.setParameter(i, param.get(i));
}
}
return (Long) q.uniqueResult();
}
public Integer executeHql(String hql) {
return this.getCurrentSession().createQuery(hql).executeUpdate();
}
public Integer executeHql(String hql, Object[] param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.length > 0) {
for (int i = 0; i < param.length; i++) {
q.setParameter(i, param[i]);
}
}
return q.executeUpdate();
}
public Integer executeHql(String hql, List<Object> param) {
Query q = this.getCurrentSession().createQuery(hql);
if (param != null && param.size() > 0) {
for (int i = 0; i < param.size(); i++) {
q.setParameter(i, param.get(i));
}
}
return q.executeUpdate();
}
}
3. UserService.java
package com.bufoon.service.user;
import java.util.List;
import com.bufoon.entity.User;
public interface UserService {
public void saveUser(User user);
public void updateUser(User user);
public User findUserById(int id);
public void deleteUser(User user);
public List<User> findAllList();
public User findUserByNameAndPassword(String username, String password);
}
4. UserServiceImpl.java
package com.bufoon.service.user.impl;
import java.util.List;
import javax.annotation.Resource;
import org.springframework.stereotype.Service;
import com.bufoon.dao.BaseDAO;
import com.bufoon.entity.User;
import com.bufoon.service.user.UserService;
@Service("userService")
public class UserServiceImpl implements UserService {
@Resource
private BaseDAO<User> baseDAO;
@Override
public void saveUser(User user) {
baseDAO.save(user);
}
@Override
public void updateUser(User user) {
baseDAO.update(user);
}
@Override
public User findUserById(int id) {
return baseDAO.get(User.class, id);
}
@Override
public void deleteUser(User user) {
baseDAO.delete(user);
}
@Override
public List<User> findAllList() {
return baseDAO.find(" from User u order by u.createTime");
}
@Override
public User findUserByNameAndPassword(String username, String password) {
return baseDAO.get(" from User u where u.userName = ? and u.password = ? ", new Object[] { username, password });
}
}
5
. LoginAction
package com.bufoon.action;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.ServletActionContext;
import org.springframework.stereotype.Controller;
import com.bufoon.entity.User;
import com.bufoon.service.user.UserService;
import com.opensymphony.xwork2.ActionSupport;
@Controller
public class LoginAction extends ActionSupport {
private static final long serialVersionUID = 1L;
@Resource
private UserService userService;
private String username;
private String password;
public String login(){
HttpServletRequest request = ServletActionContext.getRequest();
User user = userService.findUserByNameAndPassword(username, password);
if (user != null) {
request.setAttribute("username", username);
return SUCCESS;
} else {
return ERROR;
}
}
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;
}
}
6
. Util.java
package com.bufoon.util;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.security.MessageDigest;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.bufoon.entity.User;
import com.bufoon.service.user.UserService;
import sun.misc.BASE64Encoder;
/**
* 通用工具类
*/
public class Util {
/**
* 对字符串进行MD5加密
*
* @param str
* @return String
*/
public static String md5Encryption(String str) {
String newStr = null;
try {
MessageDigest md5 = MessageDigest.getInstance("MD5");
BASE64Encoder base = new BASE64Encoder();
newStr = base.encode(md5.digest(str.getBytes("UTF-8")));
} catch (Exception e) {
e.printStackTrace();
}
return newStr;
}
/**
* 判断字符串是否为空
*
* @param str
* 字符串
* @return true：为空； false：非空
*/
public static boolean isNull(String str) {
if (str != null && !str.trim().equals("")) {
return false;
} else {
return true;
}
}
}
六. JSP文件
1. login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<html>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<form action="${pageContext.request.contextPath}/user/login.action" method="post">
username：<input type="text" name="username"> <br>
password：<input type="password" name="password"> <br>
<input type="submit" value="login"><input type="reset" value="reset">
</form>
2
. success.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
<form action="${pageContext.request.contextPath}/user/login.action" method="post">
username：<input type="text" name="username"> <br>
password：<input type="password" name="password"> <br>
<input type="submit" value="login"><input type="reset" value="reset">
</form>
================================================================ENDING========================================================