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

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最新推荐文章于 2021-03-04 09:18:49 发布

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分类专栏： SpringMVC学习文章标签： springmvc

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本文介绍如何搭建SpringMVC框架的基础环境，包括配置web.xml、springmvc-servlet.xml等关键文件，实现简单的页面渲染功能。

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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