eclipse搭建web项目开发环境
下面是一个jpa2+eclipselink、struts2、spring的框架
工具：
eclipse、tomcat、mysql、jdk
jar包：
struts2：注意版本尽量一致。（需要注解的jar包：struts2-convention-plugin-2.1.8.1.jar）
eclipselink：eclipselink.jar。忘了ejb3-persistence.jar这个包需不需要加了，还是加上吧
spring：可以搜索一下每个jar包的作用，为了省事就全部加进来，还有aopalliance.jar这个包。与spring整合的适合加上struts2-spring-plugin-2.3.1.2.jar
json、dom、log相关的jar：ezmorph-1.0.6.jar、jdom-2.0.5.jar、dom4j-1.6.1.jar、json-lib-2.3-jdk15.jar、log4j-1.2.14.jar
数据库驱动包：mysql-connector-java-5.1.7-bin.jar
commons工具包：要有哪些加哪些如：commons-beanutils-1.9.1.jar、commons-codec-1.9.jar、commons-collections4-4.0.jar、commons-lang-2.4.jar（注意版本）
准备工作：
下载好软件安装、jar包、创建好测试数据库及表、调好eclipse字体（eclipse[Version: Indigo Service Release 2]默认字体中文显示太小调成5号就好点了），
打开eclipse加入user lib web需要的jar包：javaee的jar包，，这几个包我是从myeclipse中拷贝来的，可以下载到
1，新建Dynamic Web Project 名字model1，将项目编码改为utf-8，在java build path中加入上面添加的那个javaee user lib
2，
（1）配置eclipselink：新建一个source folder config，在config下新建META-INF目录，在META-INF下新建persistence.xml
persistence.xml配置如下：
<?xml version="1.0" encoding="UTF-8"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0"> <persistence-unit name="test_pu" transaction-type="RESOURCE_LOCAL"> <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider> <class>net.codeodel.po.AgencyInfo</class> <properties> <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" /> <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/ims" /> <property name="javax.persistence.jdbc.user" value="root" /> <property name="javax.persistence.jdbc.password" value="root" /> </properties> </persistence-unit> </persistence>
（2）配置spring：在config下新建applicationContext.xml
applicationContext.xml配置如下：
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd"> <!--scan --> <context:component-scan base-package="net.codeodel" ></context:component-scan> <!--jpa --> <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean"> <property name="persistenceUnitName" value="test_pu" /> </bean> <!--jpa事物管理 --> <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="entityManagerFactory" /> </bean> <!--使用注解标明事物 --> <tx:annotation-driven transaction-manager="transactionManager" /> </beans>
（3）配置struts2（及国际化的实现）：在config下新建struts.xml
struts.xml内容如下：
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"><struts> <constant name="struts.objectFactory" value="spring" /> <!-- 上传文件大小 --> <constant name="struts.multipart.maxSize" value="1000000000" ></constant> <constant name="struts.action.extension" value="action" /> <constant name="struts.ognl.allowStaticMethodAccess" value="true" /> <constant name="struts.ui.theme" value="simple" /> <constant name="struts.i18n.encoding" value="utf-8" /> <!-- 国际化 --> <constant name="struts.locale" value="zh_CN" /> <constant name="struts.custom.i18n.resources" value="Message" /> <!-- 当struts的配置文件修改后,系统是否自动重新加载该文件，开发阶段最好打开 --> <constant name="struts.configuration.xml.reload" value="true" /> <!-- 设置浏览器是否缓存静态内容，默认为TRUE 开发阶段最好关闭 --> <constant name="struts.server.static.browserCache" value ="false"/> <!-- 便于排错,打印出更详细的错误信息 --> <constant name="struts.devMode" value="true" /> <package name="base-json" extends="json-default"> </package> <include file="struts/*.xml" /> </struts>
在config下新建struts文件夹，之后的所有action对应的struts配置都放在这个目录下
在config下新建Message_zh_CN.properties这里是国际化用的（在action中取值可以用getText，action要继承了actionsupport才能取到，页面采用标签获取）
（4）配置log4j：在config下新建log4j.properties
log4j.properties的内容如下：
# Global logging configuration
log4j.rootLogger=ERROR, fileout
#shutdown framework log
log4j.logger.org.springframework=ERROR
log4j.logger.com.opensymphony=ERROR
log4j.logger.org.apache=ERROR
log4j.logger.org.logicalcobwebs=ERROR
log4j.logger.freemarker.cache=ERROR
log4j.logger.freemarker.beans=ERROR
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.conversionPattern=[%p,%c{1},%t] %m%n
# Rolling log file output...
log4j.appender.logfile.DatePattern=.yyyy-MM-dd
log4j.appender.fileout=org.apache.log4j.RollingFileAppender
log4j.appender.fileout.File=${model1.root}/j2eetestout.log
log4j.appender.fileout.MaxFileSize=1024KB
log4j.appender.fileout.MaxBackupIndex=1
log4j.appender.fileout.layout=org.apache.log4j.PatternLayout
log4j.appender.fileout.layout.conversionPattern=%d{yyyy-MM-dd HH:mm:ss} %5p %c,%t:%L - %m%n
这个配置是随便找来的，那个${model1.root}是在web.xml中有配置，是项目发布后的绝对路径
（5）配置web.xml
web.xml配置如下：
<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <context-param> <param-name>webAppRootKey</param-name> <param-value>model1.root</param-value> </context-param> <!-- spring --> <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> <!-- 利用spring，实现不用关闭工程更改log4j的配置，--> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>/WEB-INF/classes/log4j.properties</param-value> </context-param> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <!-- spring 统一使用utf-8 防止中文乱码 --> <filter> <filter-name>CharsetFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharsetFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- struts2 --> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <filter> <filter-name>action cleanup</filter-name> <filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class> </filter> <filter-mapping> <filter-name>action cleanup</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <!-- session --> <session-config> <session-timeout>60</session-timeout> </session-config> </web-app>
整个框架基本的东西就ok了
下面是basedao的示例：
package net.codeodel.dao; import java.util.List; public interface BaseDAO { /** * 查询对象 * @param clz 对象类 * @param id */ public <T> T getObject(Class<T> clz, Object id) ; /** * 查询对象列表 * @param page 分页用 */ public List<?> findObject(final String ql, final List<Object> paramList, final int... page) ; /** * 查询对象总数 */ public int getObjectCount(final String ql, final List<Object> paramList) ; /** * 新增对象 * @param obj */ public void addObject(Object obj) ; /** * 修改对象 * @param obj */ public <T> T updObject(T t) ; /** * 添加或修改 * @param obj */ public Object mergeObject(Object obj) ; /** * 删除对象 * @param obj */ public void delObject(Object obj) ; /** * 执行ql * @param ql * @param paramList */ public int exec(final String ql, final List<Object> paramList) ; }
baseDaoImpl：
package net.codeodel.daoImpl; import java.util.List; import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory; import javax.persistence.PersistenceException; import javax.persistence.Query; import net.codeodel.dao.BaseDAO; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.orm.jpa.JpaCallback; import org.springframework.orm.jpa.JpaTemplate; public class BaseDAOImpl implements BaseDAO { private JpaTemplate jpaTemplate; @Autowired public void setEntityManagerFactory(EntityManagerFactory emf) { this.jpaTemplate = new JpaTemplate(emf); } public JpaTemplate getJpaTemplate() { return jpaTemplate; } @Override public void addObject(Object obj) { getJpaTemplate().persist(obj) ; } @Override public void delObject(Object obj) { getJpaTemplate().remove(obj) ; } @Override public <T> T getObject(Class<T> clz, Object id) { return getJpaTemplate().find(clz, id) ; } @Override public Object mergeObject(Object obj) { return getJpaTemplate().merge(obj) ; } @Override public <T> T updObject(T t) { // if( t.getId() == null ){ // throw new RuntimeException("ID不能为空") ; // } return getJpaTemplate().merge(t) ; } @SuppressWarnings("unchecked") @Override public List findObject(final String ql, final List<Object> paramList, final int... page) { List ret = getJpaTemplate().executeFind(new JpaCallback() { @Override public List doInJpa(EntityManager em) throws PersistenceException { Query q = em.createQuery(ql) ; int counter = 1 ; if( paramList != null ){ for (Object o : paramList) { q.setParameter(counter++, o) ; } } if( page != null && page.length == 2 ){ int startRow = page[0] ; int pageSize = page[1] ; if(startRow>=0){ q.setFirstResult(startRow); } if(pageSize>0){ q.setMaxResults(pageSize); } } return q.getResultList(); } }) ; return ret ; } @Override public int getObjectCount(final String ql, final List<Object> paramList) { List ret = getJpaTemplate().executeFind(new JpaCallback() { @Override public List doInJpa(EntityManager em) throws PersistenceException { Query q = em.createQuery(ql) ; int counter = 1 ; if( paramList != null ){ for (Object o : paramList) { q.setParameter(counter++, o) ; } } return q.getResultList(); } }) ; if( ret.size() == 0 ){ return 0 ; } return Integer.parseInt( ret.get(0).toString() ) ; } @Override public int exec(final String ql, final List<Object> paramList) { Integer ret = (Integer) getJpaTemplate().execute(new JpaCallback() { @Override public Integer doInJpa(EntityManager em) throws PersistenceException { Query q = em.createQuery(ql) ; int counter = 1 ; if( paramList != null ){ for (Object o : paramList) { q.setParameter(counter++, o) ; } } return q.executeUpdate() ; } }) ; return ret ; } }
下面是hibernate、spring、struts2的jar包（大部分是和上面相同的）--------------------------------------------------------------------------
jar包：
struts2：注意版本尽量一致。（需要注解的jar包：struts2-convention-plugin-2.1.8.1.jar）
hibernate：hibernate3.jar，ejb3-persistence.jar、hibernate-jpa-2.0-api-1.0.0.Final.jar、jta-1.1.jar、commons-collections-3.1.jar（别加重复了，注意版本）、slf4j-api-1.5.8.jar（日志api）、slf4j-log4j12-1.5.8.jar（日志）
spring：可以搜索一下每个jar包的作用，为了省事就全部加进来，还有aopalliance.jar这个包。与spring整合的适合加上struts2-spring-plugin-2.3.1.2.jar
json、dom、log相关的jar：ezmorph-1.0.6.jar、jdom-2.0.5.jar、dom4j-1.6.1.jar、json-lib-2.3-jdk15.jar、log4j-1.2.14.jar
数据库驱动包：mysql-connector-java-5.1.7-bin.jar
commons工具包：要有哪些加哪些如：commons-beanutils-1.9.1.jar、commons-codec-1.9.jar、commons-collections4-4.0.jar、commons-lang-2.4.jar（注意版本）
