Question

描述一下Struts2如何将resquest ,response的对象封装到ServletActionContext对象里面的？

希望能提供思路，思路正确就直接采纳！！！

Answer 1

最简单暴力的，给你看下ServletActionContext源码，你就知道咋回事儿了......

/**
* Sets the HTTP servlet request object.
*
* @param request the HTTP servlet request object.
*/
public static void setRequest(HttpServletRequest request) {
ActionContext.getContext().put(HTTP_REQUEST, request);
}

/**
* Gets the HTTP servlet request object.
*
* @return the HTTP servlet request object.
*/
public static HttpServletRequest getRequest() {
return (HttpServletRequest) ActionContext.getContext().get(HTTP_REQUEST);
}

/**
* Sets the HTTP servlet response object.
*
* @param response the HTTP servlet response object.
*/
public static void setResponse(HttpServletResponse response) {
ActionContext.getContext().put(HTTP_RESPONSE, response);
}

/**
* Gets the HTTP servlet response object.
*
* @return the HTTP servlet response object.
*/
public static HttpServletResponse getResponse() {
return (HttpServletResponse) ActionContext.getContext().get(HTTP_RESPONSE);
}

思路的话，简单直接一点，通过注入来实现封装的~