1，首先：導入FreeMarker的Jar文件

2，寫一個JavaBean用于封裝數據

package freemarker;

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public class UserInfo {

???????? private String uname=null;

???????? private int uage = 0;

???????? public String getUname() {

?????????????????? return uname;

???????? }

???????? public void setUname(String uname) {

?????????????????? this.uname = uname;

???????? }

???????? public int getUage() {

?????????????????? return uage;

???????? }

???????? public void setUage(int uage) {

?????????????????? this.uage = uage;

???????? }

}

3，寫一個測試用的Test

package freemarker;

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import java.io.File;

import java.io.FileOutputStream;

import java.io.OutputStreamWriter;

import java.io.Writer;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

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import freemarker.template.Configuration;

import freemarker.template.Template;

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public class FreeMarkerTest {

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???????? private Configuration cfg = null;

????????

???????? public Configuration getConf(){

?????????????????? return cfg;

???????? }

????????

???????? public void init() throws Exception {

?????????????????? cfg = new Configuration();

?????????????????? cfg.setDirectoryForTemplateLoading(new File("bin/freemarker"));//模板文件所在的位置

???????? }

???????? public static void main(String[] args) throws Exception {

?????????????????? FreeMarkerTest obj = new FreeMarkerTest();

?????????????????? obj.init();

?????????????????? Map root = new HashMap();

?????????????????? UserInfo u = new UserInfo();

?????????????????? u.setUname("熊師虎");

?????????????????? u.setUage(100);

?????????????????? List strList = new ArrayList();

?????????????????? strList.add("aa");

?????????????????? strList.add("bb");

?????????????????? strList.add("cc");

?????????????????? strList.add("dd");

??????????????????

?????????????????? root.put("strlist", strList);

?????????????????? root.put("u", "u");//放入用戶的信息，在模板中可以取到用戶的信息

?????????????????? root.put("htag", "<h1>我是一級標題</h1>");

?????????????????? Template t = obj.getConf().getTemplate("Test.ftl");

???????? ???????? //在WebRoot目錄下構建一個test1.html

?????????????????? Writer out = new OutputStreamWriter(new FileOutputStream("WebRoot/eg.html"),"GBK");

?????????????????? t.process(root, out);//開始轉化處理

?????????????????? System.out.println("Successfull.....");

???????? }

}

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4，寫一個Servlet

package control;

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import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStreamWriter;

import java.io.Writer;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

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import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

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import freemarker.UserInfo;

import freemarker.template.Configuration;

import freemarker.template.Template;

import freemarker.template.TemplateException;

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public class FreeMarkerServletextends HttpServlet {

???????? public FreeMarkerServlet() {

?????????????????? super();

???????? }

????????

???????? @Override

???????? public void destroy() {

?????????????????? super.destroy();

???????? }

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???????? public void doGet(HttpServletRequest request, HttpServletResponse response)

??????????????????????????? throws ServletException, IOException {

?????????????????? Configuration cfg=new Configuration();

?????????????????? //String path=this.getServletContext().getRealPath("bin/freemarker");

?????????????????? //cfg.setDirectoryForTemplateLoading(new File(path));

?????????????????? cfg.setServletContextForTemplateLoading(this.getServletContext(), "bin/freemarker");

?????????????????? Template tp=cfg.getTemplate("test.ftl");

?????????????????? //因為這個是一個Servlet，所以要用這個，并且由于在Content-Type中配置的字符集都是UTF-8,所以在此處要也設置成UTF-8

?????????????????? Writer out=new OutputStreamWriter(new FileOutputStream(this.getServletContext().getRealPath(".")+"/eg.html"),"utf-8");???//注意的是這里的字符集定要和自己配置的字符集是相同的，否則將出現亂碼。并且注意OutputStreamWriter轉為Writer的方法。

?????????????????? //PrintWriter out=new PrintWriter(new FileOutputStream(new File(this.getServletContext().getRealPath(".")+"/eg.html")));如果為servelet則response.getOutputStream()

?????????????????? Map root = new HashMap();

?????????????????? UserInfo u=new UserInfo();

?????????????????? u.setUname("熊師虎");

?????????????????? u.setUage(100);

?????????????????? root.put("u", u);//放入用戶的信息，在模板中可以取到用戶的信息

??????????????????

?????????????????? List strlist=new ArrayList();

?????????????????? strlist.add("aa");

?????????????????? strlist.add("bb");

?????????????????? strlist.add("cc");

?????????????????? strlist.add("dd");

?????????????????? root.put("strlist", strlist);

??????????????????

?????????????????? root.put("htag", "<h1>我是一級標題</h1>");

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?????????????????? try {

??????????????????????????? tp.process(root, out);

?????????????????? } catch (TemplateException e) {

??????????????????????????? // TODO Auto-generated catch block

??????????????????????????? e.printStackTrace();

?????????????????? }

?????????????????? System.out.println("Successfull................");

??????????????????

????????

?????????????????? out.flush();

?????????????????? out.close();

???????? }

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???????? public void doPost(HttpServletRequest request, HttpServletResponse response)

??????????????????????????? throws ServletException, IOException {

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?????????????????? doGet(request, response);

???????? }

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}

5、配置servlet的url-pattern為：FreeMarkerServlet

6、運行FreeMarkerTest或訪問FreeMarkerServlet，用以生成e.html

7、訪問e.html，即在瀏覽器中輸入：http://localhost:8080/freemarker/eg.html

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總結

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