基于注解的SPRINGMVC+FREEMARKER环境搭建

最新推荐文章于 2021-03-04 09:18:49 发布

abel0130

最新推荐文章于 2021-03-04 09:18:49 发布

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本文详细介绍如何使用Spring MVC框架构建一个web应用，包括配置web.xml、创建配置文件、实现Controller建立及视图渲染。

原文地址:http://www.blogjava.net/paulwong/archive/2012/03/19/372220.html

首先用IDE建一个web工程。(这个就不详细介绍了)
引入响应的jar包
web.xml
<?xml version="1.0" ?>
<web-app 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"
    version="3.0">
    
    <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>

    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>
SpringMVC另外一个重要的配置文件。
DispatcherServlet会根绝web.xml中配置的<servlet-name>去找<servlet-name>-servlet.xml的文件来加载spring的一些配置信息。我这里就应该取名叫springmvc-servlet.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:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-2.5.xsd">

    
    <context:component-scan base-package="com.liba.spring.mvc"/>

    
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

        

    
    

    
    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
        <property name="cache" value="true" />
        <property name="prefix" value="" />
        <property name="suffix" value=".ftl" />
        <property name="contentType" value="text/html;charset=UTF-8"></property>
        <property name="requestContextAttribute" value="request" />
        <property name="exposeSpringMacroHelpers" value="true" />
        <property name="exposeRequestAttributes" value="true" />
        <property name="exposeSessionAttributes" value="true" />
    </bean>


    
    
    
</beans>
如果是使用freemarker最为视图模板需要再spring的配置文件applicationContext.xml中加入以下配置
<bean id="freemarkerConfig"
        class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
        <property name="templateLoaderPath" value="/WEB-INF/view/" />
        <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>
Controller建立
import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class SpringMvcController {

    @RequestMapping(value="/welcome",method={RequestMethod.GET})
    public ModelAndView getFirstPage(HttpServletRequest request) {
                //welcom就是视图的名称（welcom.ftl）
        ModelAndView mv = new ModelAndView("welcom");
        mv.addObject("name", "My First Spring Mvc");
        return mv;
    }
}
在url上敲http://localhost:8080/welcome就会到WEB-INF/view/welcom.ftl页面渲染数据
welcom.ftl页面
<!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=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
Hello ${name}
</body>
</html>

页面出来的效果：

Hello My First Spring Mvc