vip.justlive.oxygen.web.result.ThymeleafViewResultHandler Maven / Gradle / Ivy

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/*
 *  Copyright (C) 2019 justlive1
 *
 *  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 vip.justlive.oxygen.web.result;

import vip.justlive.oxygen.core.config.ConfigFactory;
import vip.justlive.oxygen.core.constant.Constants;
import vip.justlive.oxygen.core.util.ClassUtils;
import vip.justlive.oxygen.web.WebConf;
import vip.justlive.oxygen.web.http.Request;
import vip.justlive.oxygen.web.http.Response;
import vip.justlive.oxygen.web.router.RoutingContext;

/**
 * thymeleaf 视图处理
 *
 * @author wubo
 */
public class ThymeleafViewResultHandler implements ResultHandler {

  private static final boolean THYMELEAF_SUPPORTED = ClassUtils
      .isPresent("org.thymeleaf.Thymeleaf");

  private final String suffix;
  private ThymeleafResolver resolver;

  public ThymeleafViewResultHandler() {
    this.suffix = ConfigFactory.load(WebConf.class).getThymeleafViewSuffix();
  }

  @Override
  public boolean support(Result result) {
    if (THYMELEAF_SUPPORTED && result != null && ViewResult.class
        .isAssignableFrom(result.getClass())) {
      ViewResult data = (ViewResult) result;
      return data.getPath() != null && data.getPath().endsWith(suffix);
    }
    return false;
  }

  @Override
  public void apply(RoutingContext ctx, Result result) {
    ViewResult data = (ViewResult) result;
    Request request = ctx.request();
    Response response = ctx.response();
    response.setContentType(Constants.TEXT_HTML);
    check();
    response.write(resolver.handler(request, response, data.getPath(), data.getData()));
  }

  private synchronized void check() {
    if (resolver == null) {
      resolver = new ThymeleafResolver();
    }
  }
}