如何在我的操作中獲得ServletRequest
實例?Struts2:如何在ActionSupport中獲取ServletRequest實例
我實現ServletRequestAware
但我沒能獲得請求對象的動作。
struts.xml的
<package name="default" extends="struts-default,json-default">
<action name="Cart"
class="struts.cart.action.CartAction">
<interceptor-ref name="json">
<param name="contentType">application/json</param>
</interceptor-ref>
<result type="json"/>
</action>
</package>
我正在使用Ajax/JavaScript調用:
req.onreadystatechange = onReadyState;
req.open(POST, Cart.action, false);
req.setRequestHeader("Content-Type", "application/json; charset=utf-8");
req.send(JSONstr);
JSON對象:
var data = { cartItem: {
modelNo: $('#modelNo').val(),
description: $('#description').val(),
price: $('#price').val(),
action: $('#action').val(),
quantity: $('#quantity').val()
}};
JSONstr = JSON.stringify(data);
操作:
public class CartAction extends ActionSupport implements ServletRequestAware {
private HttpServletRequest request;
private Map cartItem = new HashMap();
public String execute() throws Exception {
System.out.println("request " + cartItem); // getting here cartitem
System.out.println("request " + request); // request null
}
public void setServletRequest(HttpServletRequest httpServletRequest) {
this.request = httpServletRequest;
}
public Map getCartItem() {
return cartItem;
}
public void setCartItem(Map cartItem) {
this.cartItem = cartItem;
}
}
雖然此方法有效,執行'ServletRequestAware'是優選的。 – 2013-02-26 16:20:53