net.ymate.platform.mvc.web.view.impl.FreeMarkerView.java Source code

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Here is the source code for net.ymate.platform.mvc.web.view.impl.FreeMarkerView.java

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/*
 * Copyright 2007-2107 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.ymate.platform.mvc.web.view.impl;

import java.io.BufferedWriter;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.Map.Entry;

import net.ymate.platform.mvc.web.context.WebContext;
import net.ymate.platform.mvc.web.support.TemplateHelper;
import net.ymate.platform.mvc.web.view.AbstractWebView;

import org.apache.commons.lang.StringUtils;

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

/**
 * <p>
 * FreeMarkerView
 * </p>
 * <p>
 * FreeMarker
 * </p>
 * 
 * @author (suninformation@163.com)
 * @version 0.0.0
 *          <table style="border:1px solid gray;">
 *          <tr>
 *          <th width="100px">?</th><th width="100px"></th><th
 *          width="100px"></th><th width="100px"></th>
 *          </tr>
 *          <!--  Table ?? -->
 *          <tr>
 *          <td>0.0.0</td>
 *          <td></td>
 *          <td></td>
 *          <td>2011-10-31?08:45:22</td>
 *          </tr>
 *          </table>
 */
public class FreeMarkerView extends AbstractWebView {

    protected String path;

    /**
     * 
     */
    public FreeMarkerView() {
    }

    /**
     * 
     * 
     * @param path FTL
     */
    public FreeMarkerView(String path) {
        this.path = path;
    }

    /**
     * 
     * 
     * @param path FTL
     * @param key
     * @param value
     */
    public FreeMarkerView(String path, String key, Object value) {
        this.path = path;
        this.addAttribute(key, value);
    }

    protected Configuration processPath() {
        if (StringUtils.isNotBlank(getContentType())) {
            WebContext.getResponse().setContentType(getContentType());
        }
        for (Entry<String, Object> entry : getAttributes().entrySet()) {
            WebContext.getRequest().setAttribute(entry.getKey(), entry.getValue());
        }
        if (StringUtils.isBlank(this.path)) {
            String _mapping = WebContext.getWebRequestContext().getRequestMapping();
            if (_mapping.endsWith("/")) {
                _mapping.substring(0, _mapping.length() - 1);
            }
            this.path = _mapping + ".ftl";
        } else {
            if (this.path.startsWith(this.getBaseViewPath())) {
                this.path = StringUtils.substringAfter(this.path, this.getBaseViewPath());
            }
            if (!this.path.endsWith(".ftl")) {
                this.path += ".ftl";
            }
        }
        return TemplateHelper.getFreemarkerConfiguration();
    }

    /* (non-Javadoc)
     * @see net.ymate.platform.mvc.web.view.AbstractWebView#renderView()
     */
    protected void renderView() throws Exception {
        Template t = this.processPath().getTemplate(this.path, WebContext.getContext().getLocale());
        t.process(getAttributes(), WebContext.getResponse().getWriter());
    }

    /* (non-Javadoc)
     * @see net.ymate.platform.mvc.web.view.AbstractWebView#render(java.io.OutputStream)
     */
    public void render(OutputStream output) throws Exception {
        Template t = this.processPath().getTemplate(this.path, WebContext.getContext().getLocale());
        t.process(getAttributes(), new BufferedWriter(new OutputStreamWriter(output)));
    }

}