FreeMarker解析字符串模板

    /**
     * Created: 2007-2-1
     * Modified: 2007-2-1
     * 
     * Author: Keven Chen
     */
    package freemarker.loader;
    import java.io.IOException;
    import java.io.Reader;
    import java.io.StringReader;
    import java.util.HashMap;
    import java.util.Map;
    import freemarker.cache.TemplateLoader;
    /**
     * @author Keven Chen
     * @version $Revision 1.0 $
     *
     */
    public class StringTemplateLoader implements TemplateLoader {
     private static final String DEFAULT_TEMPLATE_KEY = "_default_template_key";
     private Map templates = new HashMap();
     
     public StringTemplateLoader(String defaultTemplate){
      if(defaultTemplate != null && !defaultTemplate.equals("")){
       templates.put(DEFAULT_TEMPLATE_KEY, defaultTemplate);
      }
     }
     
     public void AddTemplate(String name,String template){
      if(name == null || template == null
        || name.equals("") || template.equals("")){
       return ;
      }
      if(!templates.containsKey(name)){
       templates.put(name, template);
      }
     }
     
     public void closeTemplateSource(Object templateSource) throws IOException {
      
     }
     public Object findTemplateSource(String name) throws IOException {
      if(name == null || name.equals("")){
       name = DEFAULT_TEMPLATE_KEY;
      }
      return templates.get(name);
     }
     public long getLastModified(Object templateSource) {
      return 0;
     }
     public Reader getReader(Object templateSource, String encoding)
       throws IOException {
      return new StringReader((String) templateSource);
     }
    }
/**
 * Created: 2007-2-1
 * Modified: 2007-2-1
 *
 * Author: Keven Chen
 */
package freemarker;

import java.io.File;
import java.io.OutputStreamWriter;
import java.io.StringWriter;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import freemarker.loader.ClassPathTemplateLoader;
import freemarker.loader.StringTemplateLoader;
import freemarker.template.Configuration;
import freemarker.template.Template;

/**
 * @author Keven Chen
 * @version $Revision 1.0 $
 *
 */
public class Test {

    public static void main(String[] args) throws Exception {
        Configuration cfg = new Configuration();
        cfg.setTemplateLoader(new StringTemplateLoader("欢迎：${user}"));
        cfg.setDefaultEncoding("UTF-8");

        Template template = cfg.getTemplate("");

        Map root = new HashMap();
        root.put("user", "Keven Chen");

        StringWriter writer = new StringWriter();
        template.process(root, writer);
        System.out.println(writer.toString());
    }

}

评论

3 楼 can4you 2010-09-19  

/**
 * Created: 2007-2-1
 * Modified: 2007-2-1
 * 
 * Author: Keven Chen
 */
package freemarker.loader;

import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.util.HashMap;
import java.util.Map;

import freemarker.cache.TemplateLoader;

/**
 * @author Keven Chen
 * @version $Revision 1.0 $
 *
 */
public class StringTemplateLoader implements TemplateLoader {
 private static final String DEFAULT_TEMPLATE_KEY = "_default_template_key";
 private Map templates = new HashMap();
 
 public StringTemplateLoader(String defaultTemplate){
  if(defaultTemplate != null && !defaultTemplate.equals("")){
   templates.put(DEFAULT_TEMPLATE_KEY, defaultTemplate);
  }
 }
 
 public void AddTemplate(String name,String template){
  if(name == null || template == null
    || name.equals("") || template.equals("")){
   return ;
  }
  if(!templates.containsKey(name)){
   templates.put(name, template);
  }
 }
 
 public void closeTemplateSource(Object templateSource) throws IOException {
  
 }

 public Object findTemplateSource(String name) throws IOException {
  if(name == null || name.equals("")){
   name = DEFAULT_TEMPLATE_KEY;
  }
  return templates.get(name);
 }

 public long getLastModified(Object templateSource) {
  return 0;
 }

 public Reader getReader(Object templateSource, String encoding)
   throws IOException {
  return new StringReader((String) templateSource);
 }

}

   
/**   
 * Created: 2007-2-1   
 * Modified: 2007-2-1   
 *    
 * Author: Keven Chen   
 */   
package freemarker;    
   
import java.io.File;    
import java.io.OutputStreamWriter;    
import java.io.StringWriter;    
import java.util.Date;    
import java.util.HashMap;    
import java.util.Map;    
   
import freemarker.loader.ClassPathTemplateLoader;    
import freemarker.loader.StringTemplateLoader;    
import freemarker.template.Configuration;    
import freemarker.template.Template;    
   
/**   
 * @author Keven Chen   
 * @version $Revision 1.0 $   
 *   
 */   
public class Test {    
   
    public static void main(String[] args) throws Exception {    
        Configuration cfg = new Configuration();    
        cfg.setTemplateLoader(new StringTemplateLoader("欢迎：${user}"));    
        cfg.setDefaultEncoding("UTF-8");    
   
        Template template = cfg.getTemplate("");    
            
        Map root = new HashMap();    
        root.put("user", "Keven Chen");    
            
        StringWriter writer = new StringWriter();    
        template.process(root, writer);    
        System.out.println(writer.toString());          
    }    
   
} 

2 楼 抛出异常的爱 2010-03-01  

Map valuesMap = HashMap();
valuesMap.put("animal", "quick brown fox");
valuesMap.put("target", "lazy dog");
String templateString = "The ${animal} jumped over the ${target}.";
StrSubstitutor sub = new StrSubstitutor(valuesMap);
String resolvedString = sub.replace(templateString);

google了一下....只找到您的贴子...
以上引自
http://commons.apache.org/lang/api-release/org/apache/commons/lang/text/StrSubstitutor.html

为了以后再找方便.....

1 楼 lunzi 2009-03-17  

good! 正好需要，谢了！