spring-webmvc 4.3.4 与 freemarker、easyui 整合

一、所需lib包

二、web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID" version="2.5">
    
    <filter>
        <filter-name>characterEncodingFilter</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>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
      </filter-mapping>
    
    <!-- 配置DispatchcerServlet -->
    <servlet>
        <servlet-name>springDispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 配置Spring mvc下的配置文件的位置和名称 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
</web-app>

三、src/springmvc.xml 配置

<?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:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
      http://www.springframework.org/schema/context 
      http://www.springframework.org/schema/context/spring-context-4.0.xsd 
      http://www.springframework.org/schema/mvc 
      http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
        
        
        <!-- 配置自动扫描的包 -->
        <context:component-scan base-package="com.lixj"></context:component-scan>
        <!-- 配置以下内容以支持静态资源访问 -->
        <mvc:default-servlet-handler/>
        <mvc:annotation-driven>
          <mvc:message-converters>
             <!-- 避免返回JSON出现下载文件 -->
            <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
              <property name="supportedMediaTypes">
               <list>
                  <value>text/html;charset=UTF-8</value>
               </list>
              </property>
            </bean>
          </mvc:message-converters>
        </mvc:annotation-driven>
         
        <!-- 配置视图解析器 如何把handler 方法返回值解析为实际的物理视图 
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name = "prefix" value="/views/"></property>
            <property name = "suffix" value = ".jsp"></property>
        </bean>
        -->
        <!-- 设置freeMarker的配置文件路径 -->  
        <bean id="freemarkerConfiguration" class="org.springframework.beans.factory.config.PropertiesFactoryBean">  
            <property name="location" value="classpath:freemarker.properties"/>  
        </bean>
    
        <!-- 配置freeMarker的模板路径 -->  
        <bean class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">  
            <property name="freemarkerSettings" ref="freemarkerConfiguration"/>  
            <property name="templateLoaderPath">  
                <value>/ftl/</value>  
            </property>  
            <property name="freemarkerVariables">
                <map>
                    <entry key="xml_escape" value-ref="fmXmlEscape" />
                </map>
            </property>
        </bean>
      
        <!-- 配置freeMarker视图解析器 -->  
        <bean id="viewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">  
            <property name="viewClass" value="org.springframework.web.servlet.view.freemarker.FreeMarkerView"/>  
            <property name="contentType" value="text/html; charset=utf-8"/>  
            <property name="cache" value="false"/>
            <property name = "suffix" value = ".ftl"></property>
            <property name="exposeRequestAttributes" value="true" />
            <property name="exposeSessionAttributes" value="true" />
            <property name="exposeSpringMacroHelpers" value="true" />
        </bean>
        
        <bean id="fmXmlEscape" class="freemarker.template.utility.XmlEscape" />
        
        <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
          <property name="maxUploadSize" value="1046666000"/>
          <property name="maxInMemorySize" value="4096" />
          <property name="defaultEncoding" value="UTF-8"></property>
        </bean>
        
</beans>

四、src/freemarker.properties 配置

#设置标签类型：square_bracket:[]     auto_detect:[]<>    
tag_syntax=auto_detect
#模版缓存时间，单位：秒
template_update_delay=0
default_encoding=UTF-8
output_encoding=UTF-8
locale=zh_CN
#设置数字格式 ，防止出现 000.00    
number_format=#
#变量为空时，不会报错 
classic_compatible=true
#这个表示每个freemarker的视图页面都会自动引入这个ftl文件。里面定议的就是一些宏，如text文本框，各种form元素   
#auto_import="/WEB-INF/templates/index.ftl" as do 

五、FreemarkerController.java 代码

package com.lixj;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import org.springframework.web.multipart.MultipartFile;

@Controller
public class FreemarkerController {
    
     @RequestMapping("/hi")
     public String sayHello(ModelMap map){
         System.out.println("say hi....");
         map.put("name","kimi");
         map.put("name2","李");
         return "hi";
     }
     
    @RequestMapping(value = "/hi/{id}/{name}")
    public String helloPathVar(@PathVariable(value = "id") Integer id,
            @PathVariable(value = "name") String name, ModelMap map) {
        System.out.println("PathVariable  id=" + id + "   name=" + name);
        map.put("id",id);
        map.put("name",name);
        return "hi";
    }
    
    @RequestMapping(value = "/testPojo") //, method = RequestMethod.POST
    public String testPojo(@RequestParam(value = "flag", required = false, defaultValue = "yes") String flag,
            User user, ModelMap map) {
        System.out.println("flag: " + flag);
        System.out.println("testPojo: " + user.toString());
        map.put("name", user.getUsername());
        return "hi";
    }
    
    @RequestMapping(value="/json")
    @ResponseBody
    public Object getJson(){
        HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();
        List list = new ArrayList();
        Map<String, Object> map1 = new HashMap<String, Object>();
        map1.put("text", "LIXJ");
        map1.put("id", "123");
        list.add(map1);
        
        Map<String, Object> map2 = new HashMap<String, Object>();
        map2.put("text", "测试");
        map2.put("id", "222");
        list.add(map2);
        return list;
    }
    
    @RequestMapping("/fileUpload")
    public String fileUpload(@RequestParam("file") MultipartFile file, HttpServletRequest request) {
        if (!file.isEmpty()) {
                 try {
                    String filePath = request.getSession().getServletContext().getRealPath("/") + "upload/"
                       + file.getOriginalFilename();
                     file.transferTo(new File(filePath));
                } catch (IllegalStateException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
        }
        return "redirect:/index.jsp";
    }
}

六、index.jsp代码

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <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 name="content-type" content="text/html; charset=UTF-8">
    <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">
    -->
    <link rel="stylesheet" type="text/css" href="/easyui/themes/default/easyui.css">
    <link rel="stylesheet" type="text/css" href="/easyui/themes/icon.css">
    <script type="text/javascript" src="/easyui/jquery.min.js"></script>
    <script type="text/javascript" src="/easyui/jquery.easyui.min.js"></script>
    
  </head>
  
  <body>

<form action="/fileUpload" method="post" accept-charset="utf-8" enctype="multipart/form-data">
     <input type="file" name="file" >
     <input type="hidden" name="flag" value="update"><br>
    username: <input type="text" name="username"><br>

    password: <input type="password" name="password"><br>

    email: <input type="text" name="email"><br>

    age: <input type="text" name="age"><br>

    city: <input type="text" name="address.city"><br>

    province: <input type="text" name="address.province"><br>

    <input type="submit" value="submit">

</form><br/><br/>
<div style="margin-bottom:20px">
     <input id="language" class="easyui-combobox" name="language" style="120px" data-options="
                    url:'/json',
                    method:'get',
                    valueField: 'id',
                    textField: 'text',
                    label: 'Language:',
                    labelPosition: 'top'
                    " />
</div>

  </body>
</html>

七、webRoot/ftl/hi.ftl  代码：
<html>
<body>
    <h1>id=${id} : name=${name}  name2=${name2}</h1><br/>
</body>
</html>

八、页面访问地址  http://localhost:90/hi/1/33