通过FreeMarkerclasspath加载方式生成静态页面

package htmlskin;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.Calendar;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;

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

public class FreeMarkerTest {

private Configuration cfg;// FreeMarker配置实例

public static void main(String[] args) {
FreeMarkerTest test = new FreeMarkerTest();

Map<String, Object> root = new HashMap<String, Object>();
root.put("message", "Hello FreeMarker.");
String ftl = "/ftl/test.ftl";
boolean flag = test.genericHtmlFile(ftl, root);
if(flag){
System.out.println("创建静态HTML页面成功！");
}else{
System.out.println("创建静态HTML页面失败！");
}
}

/**
* 获取FreeMarker配置实例
* @return
*/
public Configuration getConfiguration() {
if (null == cfg) {
cfg = new Configuration();
//通过classpath加载方式
cfg.setClassForTemplateLoading(this.getClass(), "/htmlskin");
}
return cfg;
}

/**
* 生成HTML页面
* @param ftl FreeMarker模版文件
* @param root 模版数据
* @return true->生成静态页面成功 false->生成静态页面失败
*/
public boolean genericHtmlFile(String ftl, Map<String, Object> root) {
try {
Template template = getConfiguration().getTemplate(ftl);
String projectPath = System.getProperty("user.dir");
String htmlPath = projectPath + File.separator + "html";
String path = createDirs(htmlPath, genericFilePath());
String name = genericFileName();
// System.out.println(path+name);

File file = new File(path + name);
Writer out = new BufferedWriter(new OutputStreamWriter(
new FileOutputStream(file)));
template.process(root, out);
} catch (FileNotFoundException e) {
return false;
} catch (IOException e) {
return false;
} catch (TemplateException e) {
return false;
}
return true;
}

/**
* 生成存储文件子路径
* 格式：\yyyy\MM\dd\
* @return 文件子路径
*/
public String genericFilePath() {
Calendar calendar = Calendar.getInstance();
int year = calendar.get(Calendar.YEAR);// 年
int month = calendar.get(Calendar.MONTH);// 月
int day = calendar.get(Calendar.DAY_OF_MONTH);// 日

String year_str = "";
String month_str = "";
String day_str = "";

year_str = String.valueOf(year);
month_str = month < 10 ? "0" + month : month + "";
day_str = day < 10 ? "0" + day : day + "";

// 拼接子路径
StringBuffer sb = new StringBuffer();
sb.append(File.separator);
sb.append(year_str);
sb.append(File.separator);
sb.append(month_str);
sb.append(File.separator);
sb.append(day_str);
sb.append(File.separator);
return sb.toString();
}

/**
* 生成文件名称
* 格式：yyyyMMddHHmmss4位随机数
* @return 文件名称
*/
public String genericFileName() {
//创建日历类
Calendar calendar = Calendar.getInstance();
int year = calendar.get(Calendar.YEAR);//年
int month = calendar.get(Calendar.MONTH);//月
int day = calendar.get(Calendar.DAY_OF_MONTH);//日
int hour = calendar.get(Calendar.HOUR_OF_DAY);//时
int minus = calendar.get(Calendar.MINUTE);//分
int second = calendar.get(Calendar.SECOND);//秒
//创建生成随机数类
Random random = new Random();

String year_str = year + "";
String month_str = month < 10 ? "0" + month : month + "";
String day_str = day < 10 ? "0" + day : day + "";
String hour_str = hour < 10 ? "0" + hour : hour + "";
String minus_str = minus < 10 ? "0" + minus : minus + "";
String second_str = second < 10 ? "0" + second : second + "";
// System.out.println("year=" + year + ",month=" + month + ",day=" + day
// + ",hour=" + hour + ",minus=" + minus + ",second=" + second);

StringBuffer sb = new StringBuffer();
sb.append(year_str);
sb.append(month_str);
sb.append(day_str);
sb.append(hour_str);
sb.append(minus_str);
sb.append(second_str);
sb.append(random.nextInt(8999) + 1000);

return sb.toString() + ".html";
}

/**
* 创建目录
* @param parentDir 父目录
* @param subDir 子目录
* @return 存储文件全目录
*/
public String createDirs(String parentDir, String subDir) {
//System.out.println("父目录：" + parentDir);
//System.out.println("子目录：" + parentDir + subDir);
String path = parentDir + subDir;

File parentFile = new File(parentDir);
if (parentFile.exists()) {
File subFile = new File(path);
if (!subFile.exists()) {
subFile.mkdirs();
}
}
return path;
}
}