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\r\n<#-- if指令的用法-->\r\n<#-- 在指令標(biāo)籤內(nèi)直接使用變量名得到文本值-->\r\n<#if flag == 1>\r\n flag = 1\r\n<#elseif flag ==2>\r\n flag = 2\r\n<#else>\r\n <#-- 在指令標(biāo)籤外使用 ${變量名} 的格式來(lái)得到文本值-->\r\n flag!=1 && flag!=2 flag的值為：${flag}\r\n<\/#if>\r\n<\/p>\r\n

----------------------------------------------------------<\/p>\r\n示例二輸出結(jié)果：\r\n

\r\n<#-- 判斷變量是否存在-->\r\n<#if noExistList??>\r\n List存在\r\n<#else>\r\n List不存在\r\n<\/#if>\r\n<\/p>\r\n

----------------------------------------------------------<\/p>\r\n示例三輸出結(jié)果：\r\n

\r\n<#-- list指令的用法,as可設(shè)置別名-->\r\n<#list strList as sl>\r\n <#-- 在變量名后加 _index 得到變量在容器中的序號(hào)，從0開(kāi)始-->\r\n <#if sl_index == 0>\r\n 我的博客地址是：${sl}\r\n <#else>\r\n ${sl}\r\n <\/#if>\r\n<\/#list>\r\n<\/p>\r\n

<\/p>\r\n直接使用下標(biāo)訪問(wèn)List：${strList[0]}${strList[1]}${strList[2]}\r\n<\/p>\r\n

----------------------------------------------------------<\/p>\r\n示例四輸出結(jié)果：\r\n

\r\n<#-- 使用 ${變量名.變量名} 獲取容器對(duì)象的子對(duì)象-->\r\n${strMap.mapKey0}${strMap.mapKey1}${strMap.mapKey2}\r\n<\/p>\r\n

----------------------------------------------------------<\/p>\r\n示例五輸出結(jié)果：\r\n

\r\n<#-- 當(dāng)變量是日期對(duì)象時(shí)，可使用函數(shù)使其按格式輸出-->\r\n${nowTime?string(\"yyyy-MM-dd\")}\r\n<\/p>\r\n<\/body>\r\n<\/html><\/pre>

step3. Run and debug

Deploy the project to tomcat and run it, enter in the browser: http:\/\/localhost:8080\/the project name you set\/helloWorld.htm
For more Freemarker common instruction usage examples and related articles, please pay attention to the PHP Chinese website! <\/p>"}

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Freemarker common instruction usage examples

高洛峰

Jan 05, 2017 pm 01:53 PM

freemarker

My development environment
Framework: springmvc+freemarker
Development tool: springsource-tool-suite-2.9.0
JDK version: 1.6.0_29
tomcat version: apache-tomcat-7.0 .26

step1. Write the controller file, the code is as follows:

package www.asuan.com.controller;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class HelloWorldController {
    @RequestMapping("/helloWorld")
    public String helloWorld(Model model) {
        // 示例一
        int flag = 0;
        model.addAttribute("flag", flag);
        // 示例二
        List<String> noExistList = new ArrayList<String>();
        noExistList = null;
        model.addAttribute("noExistList", noExistList);
        // 示例三
        List<String> strList = new ArrayList<String>();
        strList.add("www.");
        strList.add("cnblogs.");
        strList.add("com/sunang");
        model.addAttribute("strList", strList);
        // 示例四
        Map<String, String> strMap = new HashMap<String, String>();
        strMap.put("mapKey0", "www.");
        strMap.put("mapKey1", "cnblogs.");
        strMap.put("mapKey2", "com/sunang");
        model.addAttribute("strMap", strMap);
        // 示例五
        Date nowTime = new Date();
        model.addAttribute("nowTime", nowTime);//傳輸時(shí)間對(duì)象
        return "helloWorld.ftl";
    }
}

step2. Write the ftl file, the code is as follows:

<html>
<body>
示例一輸出結(jié)果：
<p>
<#-- if指令的用法-->
<#-- 在指令標(biāo)籤內(nèi)直接使用變量名得到文本值-->
<#if flag == 1>
    flag = 1
<#elseif flag ==2>
    flag = 2
<#else>
    <#-- 在指令標(biāo)籤外使用   ${變量名}   的格式來(lái)得到文本值-->
    flag!=1 && flag!=2 flag的值為：${flag}
</#if>
</p>
<p>----------------------------------------------------------</p>
示例二輸出結(jié)果：
<p>
<#-- 判斷變量是否存在-->
<#if noExistList??>
    List存在
<#else>
    List不存在
</#if>
</p>
<p>----------------------------------------------------------</p>
示例三輸出結(jié)果：
<p>
<#-- list指令的用法,as可設(shè)置別名-->
<#list strList as sl>
    <#-- 在變量名后加   _index   得到變量在容器中的序號(hào)，從0開(kāi)始-->
    <#if sl_index == 0>
        我的博客地址是：${sl}
    <#else>
        ${sl}
    </#if>
</#list>
</p>
<p><p></p>
直接使用下標(biāo)訪問(wèn)List：${strList[0]}${strList[1]}${strList[2]}
</p>
<p>----------------------------------------------------------</p>
示例四輸出結(jié)果：
<p>
<#-- 使用    ${變量名.變量名}   獲取容器對(duì)象的子對(duì)象-->
${strMap.mapKey0}${strMap.mapKey1}${strMap.mapKey2}
</p>
<p>----------------------------------------------------------</p>
示例五輸出結(jié)果：
<p>
<#-- 當(dāng)變量是日期對(duì)象時(shí)，可使用函數(shù)使其按格式輸出-->
${nowTime?string("yyyy-MM-dd")}
</p>
</body>
</html>

step3. Run and debug

Deploy the project to tomcat and run it, enter in the browser: http://localhost:8080/the project name you set/helloWorld.htm
For more Freemarker common instruction usage examples and related articles, please pay attention to the PHP Chinese website!

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