FreeMarker应用示例

FreeMarker应用实例
package mon.util;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.util.HashMap;
import java.util.Map;
import org.apache.log4j.Logger;
import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateExceptionHandler;
/**
* FreeMarker 帮助类
* @author liud44
*
*/
publicclass FreeMarkerManager {
privatestatic Logger log =
Logger.getLogger(FreeMarkerManager.class);
privatestatic Configuration cfg;
static{
try {
cfg = new Configuration(Configuration.VERSION_2_3_25);
cfg.setDefaultEncoding("UTF-8");
/*Examples:
Relative base path (will load from the
com.example.myapplication.templates package):
new
ClassTemplateLoader(com.example.myapplication.SomeClass.class, "templates")
Absolute base path:
new
ClassTemplateLoader(somepackage.SomeClass.class,
"/com/example/myapplication/templates")*/
//cfg.setDirectoryForTemplateLoading(new
File("/com/example/myapplication/templates"));
cfg.setClassForTemplateLoading(FreeMarkerManager.class, "/");
cfg.setTemplateExceptionHandler(TemplateExceptionHandler.RE THROW_HANDLER);
} catch (Exception e) {
// TODO Auto-generated catch block
log.error("freemarker.template.Configuration init error", e);
}
}
/**
* 通过freemarker获取模板内容并返回
* @param root
* @param TemplatePath
* @return
*/
publicstatic String process(Map<String, Object> root , String TemplatePath){
Writer out = null;
try {
Template temp = cfg.getTemplate(TemplatePath);
out = new StringWriter();
temp.process(root, out);
out.flush();
return out.toString();
} catch (Exception e) {
// TODO Auto-generated catch block
log.error("freeMarkerManager process", e);
}finally{
if(out != null){
try {
out.close();
} catch (IOException e) {
// TODO Auto-generated catch block
log.error("freeMarkerManager out.close", e);
}
}
}
return"";
}
publicstaticvoid main(String[] args) {
Map data = new HashMap();
data.put("abc", "123444");
System.out.println(FreeMarkerManager.process(data, "/com/xxx/common/util/testFreeMarker.txt"));
}
}。