页面有变化会导致,从代码上看: if (sameDocumentNavigation) loadSameDocumentItem(item); else loadDifferentDocumentItem(item, loadType); 而loadDifferentDocumentItem函数 switch (loadType) { case FrameLoadTypeReload: case FrameLoadTypeReloadFromOrigin: request.setCachePolicy(ReloadIgnoringCacheData); break; case FrameLoadTypeBack: case FrameLoadTypeBackWMLDeckNotAccessible: case FrameLoadTypeForward: case FrameLoadTypeIndexedBackForward: // If the first load within a frame is a navigation within a back/forward list that was attached // without any of the items being loaded then we should use the default caching policy (<rdar://problem/8131355>). if (m_stateMachine.committedFirstRealDocumentLoad() && !itemURL.protocolIs("https")) request.setCachePolicy(ReturnCacheDataElseLoad); break; case FrameLoadTypeStandard: case FrameLoadTypeRedirectWithLockedBackForwardList: break; case FrameLoadTypeSame: default: ASSERT_NOT_REACHED(); } action = NavigationAction(itemOriginalURL, loadType, false); }
LOAD_CACHE_ONLY 试了这个模式么?
LOAD_CACHE_ONLY 试了这个模式么?
试了,还是会有刷新的情况
LOAD_CACHE_ONLY 试了这个模式么?
试了,还是会有刷新的情况我试过,不会重新加载,是有一个刷新的动作,但是是从cache中加载的,并不会重新请求服务器
LOAD_CACHE_ONLY 试了这个模式么?
试了,还是会有刷新的情况我试过,不会重新加载,是有一个刷新的动作,但是是从cache中加载的,并不会重新请求服务器
有没有什么办法能把这个刷新的动作也去掉,就是保持页面离开时什么样 back回来还是什么样,因为有ajax调用会修改页面里的东西,如果有刷新的动作页面会有变化
if (sameDocumentNavigation)
loadSameDocumentItem(item);
else
loadDifferentDocumentItem(item, loadType);
而loadDifferentDocumentItem函数
switch (loadType) {
case FrameLoadTypeReload:
case FrameLoadTypeReloadFromOrigin:
request.setCachePolicy(ReloadIgnoringCacheData);
break;
case FrameLoadTypeBack:
case FrameLoadTypeBackWMLDeckNotAccessible:
case FrameLoadTypeForward:
case FrameLoadTypeIndexedBackForward:
// If the first load within a frame is a navigation within a back/forward list that was attached
// without any of the items being loaded then we should use the default caching policy (<rdar://problem/8131355>).
if (m_stateMachine.committedFirstRealDocumentLoad() && !itemURL.protocolIs("https"))
request.setCachePolicy(ReturnCacheDataElseLoad);
break;
case FrameLoadTypeStandard:
case FrameLoadTypeRedirectWithLockedBackForwardList:
break;
case FrameLoadTypeSame:
default:
ASSERT_NOT_REACHED();
} action = NavigationAction(itemOriginalURL, loadType, false);
}
if (!addedExtraFields)
addExtraFieldsToRequest(request, m_loadType, true, formData); loadWithNavigationAction(request, action, false, loadType, 0);
而最后一个函数 无论从不从cache拿数据 都会刷新
这个在webkit的loader目录一下的一个类里面 在android的系统架构的native层中