package org.douyu.plugins.jsp;
import douyu.mvc.Context;
import douyu.mvc.ViewException;
import douyu.mvc.ViewManager;
/**
*
* @author ZHH
*
*/
public class JspViewManager implements ViewManager {
private Context douyuContext;
JspViewManager(Context douyuContext) {
this.douyuContext = douyuContext;
}
private String defaultViewFileName() {
//不能使用File.separatorChar，必需使用uri规范中的'/'，否则jsp会找不到文件
StringBuilder viewFileName = new StringBuilder(50);
viewFileName.append('/'); //相对于应用上下文的绝对路径
viewFileName.append(douyuContext.getControllerClassName().replace('.', '/'));
viewFileName.append(".");
viewFileName.append(douyuContext.getActionName());
viewFileName.append(".jsp");
return viewFileName.toString();
}
@Override
public void out() {
out(defaultViewFileName());
}
@Override
public void out(String viewFileName) {
try {
douyuContext.getHttpServletRequest().getRequestDispatcher(viewFileName).include(douyuContext.getHttpServletRequest(),
douyuContext.getHttpServletResponse());
} catch (Throwable t) {
throw new ViewException(t);
}
}
@Override
public void put(String key, Object value) {
//TODO 会覆盖己存在的值
douyuContext.getHttpServletRequest().setAttribute(key, value);
}
}