Examples with AtMap org.nutz.mvc.config.AtMap used on opensource projects

Example 1 with AtMap

use of org.nutz.mvc.config.AtMap in project nutz by nutzam.

the class AbstractPathView method createContext.

/**
     * 为一次 HTTP 请求，创建一个可以被表达式引擎接受的上下文对象
     * 
     * @param req
     *            HTTP 请求对象
     * @param obj
     *            入口函数的返回值
     * @return 上下文对象
     */
public static Context createContext(HttpServletRequest req, Object obj) {
    Context context = Lang.context();
    // 复制全局的上下文对象
    Object globalContext = Mvcs.getServletContext().getAttribute(Loading.CONTEXT_NAME);
    if (globalContext != null) {
        context.putAll((Context) globalContext);
    }
    // 请求对象的属性列表
    Map<String, Object> req_attr = new HashMap<String, Object>();
    for (Enumeration<String> en = req.getAttributeNames(); en.hasMoreElements(); ) {
        String tem = en.nextElement();
        if (!tem.startsWith("$"))
            req_attr.put(tem, req.getAttribute(tem));
    }
    // 兼容最初的写法
    context.set("a", req_attr);
    context.set("req_attr", req_attr);
    ActionContext ac = Mvcs.getActionContext();
    if (ac != null)
        context.set("pathargs", Mvcs.getActionContext().getPathArgs());
    HttpSession session = Mvcs.getHttpSession(false);
    if (session != null) {
        Map<String, Object> session_attr = new HashMap<String, Object>();
        for (Enumeration<String> en = session.getAttributeNames(); en.hasMoreElements(); ) {
            String tem = en.nextElement();
            session_attr.put(tem, session.getAttribute(tem));
        }
        context.set("session_attr", session_attr);
    }
    // 请求的参数表,需要兼容之前的p.参数, Fix issue 418
    Map<String, String> p = new HashMap<String, String>();
    for (Object o : Lang.enum2collection(req.getParameterNames(), new ArrayList<String>())) {
        String key = (String) o;
        String value = req.getParameter(key);
        p.put(key, value);
        // 以支持直接获取请求参数
        context.set(key, value);
    }
    context.set("p", p);
    Map<String, String> u = new HashMap<String, String>();
    AtMap at = Mvcs.getAtMap();
    if (at != null) {
        for (Object o : at.keys()) {
            String key = (String) o;
            u.put(key, at.get(key));
        }
        context.set("u", u);
    }
    // 加入返回对象
    if (null != obj)
        context.set(ViewProcessor.DEFAULT_ATTRIBUTE, obj);
    return context;
}