Freemarker 自定义TemplateLoader解析字符串

/**
 * 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 freemarker.cache.TemplateLoader;

/**
 * @author Keven Chen
 * @version $Revision 1.0 $
 *
 */
public class StringTemplateLoader implements TemplateLoader {

    private String template;

    public StringTemplateLoader(String template){
        this.template = template;
        if(template == null){
            this.template = "";
        }
    }

    public void closeTemplateSource(Object templateSource) throws IOException {
        ((StringReader) templateSource).close();
    }

    public Object findTemplateSource(String name) throws IOException {
        return new StringReader(template);
    }

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

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

}