Freemark使用实例

 

import java.io.File; import java.io.IOException; import java.io.StringWriter; import java.util.HashMap; import java.util.Locale; import java.util.Map; import org.apache.log4j.Logger; import freemarker.template.Configuration; import freemarker.template.DefaultObjectWrapper; import freemarker.template.Template; import freemarker.template.TemplateException; import freemarker.template.TemplateModelException;  /**  * Add one sentence class summary here.  * Add class deion here.  *  * @author AllenJ  * @version 1.0, 2008-1-2  * @since 1.0  */ public class SoapRequest {   private static Logger logger = Logger.getLogger(SoapRequest.class);  public SoapRequest() {   logger.debug("SoapRequest()");   // TODO Auto-generated constructor stub  } public String init(String orderId,String name){  //配置对象   Configuration cfg = new Configuration();     try {         //Set directory for loading template   cfg.setDirectoryForTemplateLoading(new File("template/"));  } catch (IOException e) {   logger.error("SR-INIT-1001:"+"Set directory error,for "+e.getMessage());  }  cfg.setObjectWrapper(new DefaultObjectWrapper());    //共享变量是指所有模板都能访问的变量，在configuration中设置, 数据模型中rootMap的变量将会隐藏同名的共享变量。   try {   cfg.setSharedVariable("constant_1", "Constant_1");  } catch (TemplateModelException tme) {   logger.error("SR-INIT-1002:"+"Set shared variable error,for "+tme.getMessage());  }   Map rootMap = new HashMap();   rootMap.put("orderID", orderId);   rootMap.put("name",name);       //得到模板对象,Configuration对Template对象进行缓存。   Template template=null;   try {    template = cfg.getTemplate("soapRequest.ftl", Locale.US);  } catch (IOException e) {   logger.error("SR-INIT-1003:"+"get template fail,for "+e.getMessage());  }    //合并模板和数据模型  StringWriter writer = new StringWriter();  try {   template.process(rootMap, writer);  } catch (TemplateException e) {   logger.error("SR-INIT-1004:"+"process template data fail,for "+e.getMessage());   e.printStackTrace();  } catch (IOException e) {   logger.error("SR-INIT-1005:"+"IO fail,for "+e.getMessage());  }  writer.flush();  try {   writer.close();  } catch (IOException e) {   logger.error("SR-INIT-1006:"+"can't close the IO Stream,for "+e.getMessage());  }  return writer.toString(); }    public static void main(String[] args) {   SoapRequest soapRequest=new SoapRequest();   logger.info(soapRequest.init("007","Allen"));  } } 示意图如下： 输出结果： <SOAP:Envelope xmlns:SOAP="http://schemas.xmlsoap.org/soap/envelope/">  <SOAP:Body>         <getORDER>          <ORDERID>007</ORDERID>          <NAME>Allen</NAME>         </getORDER>         <getConstant>          <CONSTANT>Constant_1</CONSTANT>         </getConstant>  </SOAP:Body> </SOAP:Envelope>   源文件