1，首先：导入FreeMarker的Jar文件
2，写一个JavaBean用于封装数据
package freemarker;
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，写一个测试用的Test
package freemarker;
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;
import freemarker.template.Configuration;
import freemarker.template.Template;
public class FreeMarkerTest {
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("熊师虎");
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");//放入用户的信息，在模板中可以取到用户的信息
root.put("htag", "<h1>我是一级标题</h1>");
Template t = obj.getConf().getTemplate("Test.ftl");
//在WebRoot目录下构建一个test1.html
Writer out = new OutputStreamWriter(new FileOutputStream("WebRoot/eg.html"),"GBK");
t.process(root, out);//开始转化处理
System.out.println("Successfull.....");
}
}
4，写一个Servlet
package control;
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;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import freemarker.UserInfo;
import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateException;
public class FreeMarkerServletextends HttpServlet {
public FreeMarkerServlet() {
super();
}
@Override
public void destroy() {
super.destroy();
}
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");
//因为这个是一个Servlet，所以要用这个，并且由于在Content-Type中配置的字符集都是UTF-8,所以在此处要也设置成UTF-8
Writer out=new OutputStreamWriter(new FileOutputStream(this.getServletContext().getRealPath(".")+"/eg.html"),"utf-8"); //注意的是这里的字符集定要和自己配置的字符集是相同的，否则将出现乱码。并且注意OutputStreamWriter转为Writer的方法。
//PrintWriter out=new PrintWriter(new FileOutputStream(new File(this.getServletContext().getRealPath(".")+"/eg.html")));////如果为servelet则response.getOutputStream()
Map root = new HashMap();
UserInfo u=new UserInfo();
u.setUname("熊师虎");
u.setUage(100);
root.put("u", u);//放入用户的信息，在模板中可以取到用户的信息
List strlist=new ArrayList();
strlist.add("aa");
strlist.add("bb");
strlist.add("cc");
strlist.add("dd");
root.put("strlist", strlist);
root.put("htag", "<h1>我是一级标题</h1>");
try {
tp.process(root, out);
} catch (TemplateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("Successfull................");
out.flush();
out.close();
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
}
5、配置servlet的url-pattern为：FreeMarkerServlet
6、运行FreeMarkerTest或访问FreeMarkerServlet，用以生成e.html
7、访问e.html，即在浏览器中输入：http://localhost:8080/freemarker/eg.html