apache freemarker is a temlpate engine:
output = Template + data - model
直接上干货,有兴趣可以直接引用。。。
example:
1.build a spring hibernate springMVC project; add freemarker.jar too buildpath...
2.相关配置文件如下,
web.xml
<?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">
<!-- Spring -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
classpath*:spring-main.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 使用Filter解决中文乱码问题 -->
<filter>
<filter-name>encodingFilter</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>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- SpringMVC前端控制器 -->
<servlet>
<servlet-name>springmvc_alspd</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>
contextConfigLocation
</param-name>
<param-value>
classpath*:spring-mvc.xml
</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>springmvc_alspd</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 解决:Could not obtain transaction-synchronized Session for current thread -->
<filter>
<filter-name>SpringOpenSessionInViewFilter</filter-name>
<filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>SpringOpenSessionInViewFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
spring-main.xml
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:cache="http://www.springframework.org/schema/cache" xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-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/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.0.xsd"
default-autowire="byName" default-lazy-init="true">
<!-- 引入properties文件 -->
<!-- <context:property-placeholder location="classpath*:config/jdbc.properties"
/> -->
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location">
<value>classpath:jdbc.properties</value>
<!-- <value></WEB-INF/jdbc.properties</value> -->
</property>
</bean>
<!-- 定义数据库连接池数据源bean destroy-method="close"的作用是当数据库连接不使用的时候,就把该连接重新放到数据池中,方便下次使用调用 -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<!-- 设置JDBC驱动名称 -->
<property name="driverClass" value="${jdbc.driver}" />
<!-- 设置JDBC连接URL -->
<property name="jdbcUrl" value="${jdbc.url}" />
<!-- 设置数据库用户名 -->
<property name="user" value="${jdbc.username}" />
<!-- 设置数据库密码 -->
<property name="password" value="${jdbc.password}" />
<!-- 设置连接池初始值 -->
<property name="initialPoolSize" value="5" />
</bean>
<!-- 配置sessionFactory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<!-- 数据源 -->
<property name="dataSource" ref="dataSource" />
<!-- hibernate的相关属性配置 -->
<property name="hibernateProperties">
<value>
<!-- 设置数据库方言 -->
hibernate.dialect=org.hibernate.dialect.MySQLDialect
<!-- 设置自动创建|更新|验证数据库表结构 -->
hibernate.hbm2ddl.auto=update
<!-- 是否在控制台显示sql -->
hibernate.show_sql=false
<!-- 是否格式化sql,优化显示 -->
hibernate.format_sql=true
<!-- 是否开启二级缓存 -->
hibernate.cache.use_second_level_cache=false
<!-- 是否开启查询缓存 -->
hibernate.cache.use_query_cache=false
<!-- 数据库批量查询最大数 -->
hibernate.jdbc.fetch_size=50
<!-- 数据库批量更新、添加、删除操作最大数 -->
hibernate.jdbc.batch_size=50
<!-- 是否自动提交事务 -->
hibernate.connection.autocommit=true
<!-- 指定hibernate在何时释放JDBC连接 -->
hibernate.connection.release_mode=auto
<!-- 创建session方式 hibernate4.x 的方式 -->
hibernate.current_session_context_class=org.springframework.orm.hibernate4.SpringSessionContext
<!-- javax.persistence.validation.mode默认情况下是auto的,就是说如果不设置的话它是会自动去你的classpath下面找一个bean-validation**包
所以把它设置为none即可 -->
javax.persistence.validation.mode=none
</value>
</property>
<!-- 自动扫描实体对象 -->
<property name="packagesToScan" value="com.alspd.job.entity" />
</bean>
<!-- 定义事务管理 -->
<bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<tx:attributes>
<tx:method name="save*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="create*" propagation="REQUIRED" />
<tx:method name="insert*" propagation="REQUIRED" />
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="merge*" propagation="REQUIRED" />
<tx:method name="del*" propagation="REQUIRED" />
<tx:method name="remove*" propagation="REQUIRED" />
<tx:method name="put*" propagation="REQUIRED" />
<tx:method name="execute*" propagation="REQUIRED"
rollback-for="Exception.class" />
<tx:method name="tes*" propagation="REQUIRED" />
<tx:method name="use*" propagation="REQUIRED" />
<!--hibernate4必须配置为开启事务 否则 getCurrentSession()获取不到 -->
<tx:method name="get*" propagation="REQUIRED" read-only="true" />
<tx:method name="count*" propagation="REQUIRED" read-only="true" />
<tx:method name="find*" propagation="REQUIRED" read-only="true" />
<tx:method name="list*" propagation="REQUIRED" read-only="true" />
<tx:method name="*" propagation="REQUIRED" rollback-for="Exception.class" />
</tx:attributes>
</tx:advice>
<bean id="transactionProxy"
class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
abstract="true" lazy-init="true">
<property name="transactionManager" ref="transactionManager"></property>
<property name="transactionAttributes">
<props>
<prop key="add*">PROPAGATION_REQUIRED,-Exception</prop>
<prop key="save*">PROPAGATION_REQUIRED,-Exception</prop>
<prop key="tes*">PROPAGATION_REQUIRED,-Exception</prop>
<prop key="execute*">PROPAGATION_REQUIRED,-Exception</prop>
<prop key="modify*">PROPAGATION_REQUIRED,-Exception</prop>
<prop key="update*">PROPAGATION_REQUIRED,-Exception</prop>
<prop key="delete*">PROPAGATION_REQUIRED,-Exception</prop>
<prop key="remove*">PROPAGATION_REQUIRED,-Exception</prop>
<prop key="query*">PROPAGATION_REQUIRED, readOnly,-Exception</prop>
<prop key="load*">PROPAGATION_REQUIRED, -Exception</prop>
</props>
</property>
</bean>
<!-- 开启注解扫描 -->
<context:component-scan base-package="com.alspd.job">
<context:exclude-filter expression="org.springframework.stereotype.Controller"
type="annotation" />
</context:component-scan>
<!-- 配置声明式事务:方法一,在Service实现类或者public实现方法上使用注解@Transactional,则此类或方法就会启用事务机制 -->
<tx:annotation-driven transaction-manager="transactionManager" />
<!-- 下面三个Bean的配置可有可无,但配置后用处更大,通常用于BaseDao类、其他Dao类或特殊工具类中 -->
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate4.HibernateTemplate"
p:sessionFactory-ref="sessionFactory" />
<bean id="hibernateDaoSupport"
class="org.springframework.orm.hibernate4.support.HibernateDaoSupport"
p:hibernateTemplate-ref="hibernateTemplate" abstract="true" />
<bean id="sessionFactoryUtils" class="org.springframework.orm.hibernate4.SessionFactoryUtils"
abstract="true" />
<!-- Freemarker配置 -->
<bean id="freemarkerConfig"
class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
<property name="templateLoaderPath" value="/WEB-INF/templates/" />
<property name="freemarkerSettings">
<props>
<prop key="template_update_delay">0</prop>
<prop key="default_encoding">UTF-8</prop>
<prop key="number_format">0.##########</prop>
<prop key="datetime_format">yyyy-MM-dd HH:mm:ss</prop>
<prop key="classic_compatible">true</prop>
<prop key="template_exception_handler">ignore</prop>
</props>
</property>
</bean>
</beans>
springMVC.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:context="http://www.springframework.org/schema/context"
xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<!-- 开启注解扫描 -->
<context:component-scan base-package="com.alspd.job"
use-default-filters="false">
<context:include-filter expression="org.springframework.stereotype.Controller"
type="annotation" />
</context:component-scan>
<!-- 开启RequestMapping注解 -->
<mvc:annotation-driven />
<!-- TODO mvc:resource -->
<!-- 处理请求转发 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- 上传文件拦截,设置最大上传文件大小 10M=10*1024*1024(B)=10485760 bytes -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="1048576000" />
</bean>
<!-- 在处理器实现Controller时,需要配置bean -->
<!-- <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/>
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/> -->
<bean name="/hello" class="com.alspd.job.controller.HelloController" />
<!-- 自定义HandlerInterceptor配置 -->
<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/test/**" />
<bean class="com.alspd.job.common.MyInterceptor"></bean>
</mvc:interceptor>
<mvc:interceptor>
<mvc:mapping path="/test/**" />
<bean class="com.alspd.job.common.MyInterceptor2"></bean>
</mvc:interceptor>
</mvc:interceptors>
<!--视图解释器 -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
<property name="order" value="1"></property>
<property name="suffix">
<value>.ftl</value>
</property>
<property name="contentType" value="text/html;charset=UTF-8"></property>
</bean>
</beans>
来一个Controller:
@RequestMapping("freemarker")
public String freemarker(HttpServletRequest req, HttpServletResponse resp) {
Configuration configuration = new Configuration();
configuration.setServletContextForTemplateLoading(req.getSession()
.getServletContext(), "/WEB-INF/templates");
List<TUser> userList = service.getUserList();
Map<String,Object> root = new HashMap<>();
root.put("list", userList);
Template template;
Writer out;
try {
template = configuration.getTemplate("test.ftl");
out = resp.getWriter();
template.process(root, out);
} catch (Exception e) {
e.printStackTrace();
}
return "user";
}
记得***.tfl文件啊
example:
<html>
<head>
<title>freeMarker test</title>
</head>
<body>
<#list list as user>
userId:${user.id}
userName:${user.name}
userPassword:${user.password}
userPhone:${user.phone}
<br/>
<hr/>
</#list>
<hr/>
</body>
</html>
orver。。。