Maven 整合FreeMarker使用

pom.xml

 <!-- freemarker jar -->
 <dependency>
     <groupId>org.freemarker</groupId>
     <artifactId>freemarker</artifactId>
     <version>2.3.20</version>
 </dependency>

testFreeMarker.flt

您好${name}，现在在测试FreeMarker功能

FreeMarkerUtil.java

 package pers.kangxu.test.util;

 import java.io.IOException;
 import java.io.StringWriter;
 import java.util.Map;

 import javax.servlet.http.HttpServletRequest;

 import freemarker.template.Configuration;
 import freemarker.template.Template;
 import freemarker.template.TemplateException;

 /**
  *
  * <b>
  *    FreeMarkerUtil
  * </b>
  * @author kangxu
  *
  */
 public class FreeMarkerUtil {

     private static FreeMarkerUtil instance;
     private Configuration config;

     String templatePath = "/freeMarker/";

     /**
      * instance FreeMarkerUtil
      * @return
      */
     public static FreeMarkerUtil instance() {
         if (instance == null) {
             instance = new FreeMarkerUtil();
         }
         return instance;
     }

     /**
      * instance Configuration
      * @param request
      */
     private void configInstance(HttpServletRequest request) {
         if (this.config == null) {
             this.config = new Configuration();
             this.config.setServletContextForTemplateLoading(request.getSession().getServletContext(),templatePath);
         }
     }

     /**
      * 通过模板文件生成字符串
      * @param request
      * @param templateFileName
      * @param propMap
      * @return
      */
     public String geneFileStr(HttpServletRequest request,String templateFileName, Map<String, Object> propMap) {
         configInstance(request);
         StringWriter out = new StringWriter();
         Template tmp;
         try {
             tmp = this.config.getTemplate(templateFileName,"UTF-8");
             tmp.setEncoding("UTF-8");
             tmp.process(propMap, out);
         } catch (IOException e) {
             e.printStackTrace();
         } catch (TemplateException e) {
             e.printStackTrace();
         }
         return out.getBuffer().toString();
     }

 }

TestController.java

 package pers.kangxu.test.controller;

 import java.util.HashMap;
 import java.util.Map;

 import javax.servlet.http.HttpServletRequest;

 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.ResponseBody;

 import pers.kangxu.test.util.FreeMarkerUtil;

 @Controller
 @RequestMapping("/test-default")
 public class TestController {

     @RequestMapping(value="test-freemarker",produces = "application/json; charset=utf-8")
     @ResponseBody
     public String testFreeMarker(HttpServletRequest request){

         Map<String,Object> map = new HashMap<String,Object>();
         map.put("name", "【我是名字】");

         return FreeMarkerUtil.instance().geneFileStr(request, "testFreeMarker.flt", map);
     }
 }

运行结果