目录
一、读数据
1、简单对象读取
{
"app": "xnwVideo",
"src": "C:\\build-video\\Output",
"dest": "C:\\build-video\\1.0.32",
"version": "1.0.32",
"build": 32,
"note": "布局json读取",
"act": "All"
} CBinBuf buf;
buf.ReadFile("jsonInfo.json");
CJsonObj json(buf);
CBinBuf app, src, des, note, build, fullVersion, act;
json.getString("app", app);
json.getString("src", src);
json.getString("dest", des);
json.getString("note", note);
json.getString("build", build);
json.getString("version", fullVersion);
json.getString("act", act);2、数组读取
文件如下：
[
{
"id": "Integrated Webcam:\\\\?\\usb#22vid_0c45&pid_671f&mi_00#226&8c5ffc6&0&0000#22{65e8773d-8f56-11d0-a3b9-00a0c9223196}\\global",
"res": "1280x720"
},
{
"id": "XSplit VCam:\\\\?\\root#22image#220000#22{65e8773d-8f56-11d0-a3b9-00a0c9223196}\\global",
"res": "1280x720"
},
{
"id": "YY开播:",
"res": "1280x720"
},
{
"id": "c922 Pro Stream Webcam:\\\\?\\usb#22vid_046d&pid_085c&mi_00#227&1e59b99a&0&0000#22{65e8773d-8f56-11d0-a3b9-00a0c9223196}\\global",
"res": "1920x1080"
}
]读取方式：
std::map<std::string, std::string > camIDResMap_;
CBinBuf buf;
buf.ReadFile(jsonPath.c_str());
CJsonObj json(buf);
for (int i = 0; i < json.get_arry_size(); ++i)
{
CJsonObj * pJson = json.get_arry_at(i);
string id, res;
pJson->getString("id", id);
pJson->getString("res", res);
camIDResMap_[id] = res;
}
类似的还有：
for (int i = 0; i < class_info->get_arry_size(); ++i) {
CJsonObj* pJson = class_info->get_arry_at(i);
std::string courseID, chapterID, qID, chapterName, startTime, endTime, className, imgUrl;
int nStatus;
pJson->getString("course.id", courseID);
pJson->getString("id", chapterID);
pJson->getString("class.qid", qID);
pJson->getString("name", chapterName);
pJson->getString("start_time", startTime);
pJson->getString("end_time", endTime);
nStatus = pJson->getInt("live_status");
/*
CJsonObj* pCourseJson = pJson->getObj("course", err);
pCourseJson->getString("name", className);
pCourseJson->getString("cover_url", imgUrl);
*/
pJson->getString("course.name", className);
pJson->getString("course.cover_url", imgUrl);
//time
long iStartTime = atoi(startTime.c_str());
long iEndTime = atoi(endTime.c_str());
std::string timeStr = GetTimeStr(iStartTime, iEndTime);
//添加列表中
ui::ListContainerElement* pItem = dynamic_cast<ui::ListContainerElement*>(ui::GlobalManager::CreateBoxWithCache(L"myClass/myclass_list_item.xml"));
myClass_list->Add(pItem);
if (curCourseId==courseID&&curChapterId==chapterID)
{
m_pCurItem = pItem; //刷新后，重置当前节点
bCurItemReseted = TRUE;
}
//详细信息设置
SetText(pItem, L"courseName", nbase::UTF8ToUTF16(className).c_str());
SetText(pItem, L"chapterName", nbase::UTF8ToUTF16(chapterName).c_str());
SetText(pItem, L"time", MyString::stows(timeStr).c_str());//asic->utf
SetDataID(pItem, L"time", startTime);
SetDataID(pItem, L"courseName", endTime); //此项利用上，保存这节课结束时间
std::wstring statusStr;
switch (nStatus)
{
case 0:
statusStr = L"未开始";
break;
case 1:
statusStr = L"正在直播";
break;
case 4:
statusStr = L"正在直播";
break;
case 2:
statusStr = L"已结束";
break;
case 3:
statusStr = L"缺课";
break;
}
SetText(pItem, L"live_status", statusStr);
ui::Control* pClassPhoto = (ui::Control*)pItem->FindSubControl(L"classPhoto");
if (pClassPhoto)
{
//根据Json 传来的照片网址，与本地地址映射
//之所以加?做分隔符，是因为文件名不能包含?
std::wstring url = nbase::UTF8ToUTF16(imgUrl);
//此段代码用于线程下载时使用
std::wstring IndexStr = std::to_wstring(i);
std::wstring pathTemp = MyString::format(L"tmp\\classPhoto%s.png", IndexStr.c_str());
std::wstring localPath = IndexStr + L"?" + localFoldPathW + pathTemp;
std::wstring remotePath = IndexStr + L"|" + url;
AddMapItem(remotePath, localPath);
///
xnw_http_download(imgUrl.c_str(), GetHWND(), i);
}
ui::Button* pEnterLSRoomBtn = (ui::Button*)pItem->FindSubControl(L"enterLiveRoom_Btn");
pEnterLSRoomBtn->AttachClick(nbase::Bind(&MyClassForm::EnterRoom, this, std::placeholders::_1));
pItem->SetUTF8DataID(courseID); //设置item标识为章节ID
pEnterLSRoomBtn->SetUTF8DataID(chapterID);
pClassPhoto->SetUTF8DataID(qID);
}
if (!bCurItemReseted)
{
m_pCurItem = NULL;
}
}3、对象读取
{
"list": [
{
"name": "亮度92",
"props": {
"BacklightCompensation": 1,
"Brightness": 92,
"ColorEnable": 16,
"Contrast": 91,
"Gain": 16,
"Gamma": 62,
"Hue": 91,
"Saturation": 255,
"Sharpness": 62,
"WhiteBalance": -1
},
"control": {
"Exposure": -4,
"Focus": 0,
"Iris": 100,
"Pan": 0,
"Roll": 0,
"Tilt": 0,
"Zoom": 100
}
},
{
"name": "高亮170",
"props": {
"BacklightCompensation": 0,
"Brightness": 170,
"ColorEnable": 3,
"Contrast": 128,
"Gain": 3,
"Gamma": 188,
"Hue": 128,
"Saturation": 128,
"Sharpness": 188,
"WhiteBalance": -1
},
"control": {
"Exposure": -4,
"Focus": 0,
"Iris": 100,
"Pan": 0,
"Roll": 0,
"Tilt": 0,
"Zoom": 100
}
}
]
}对象的值又是数组的情况下，读取方式
CJsonObj ampJson(jsonS.c_str());
{
int nCount = 0;
int err;
CJsonObj* arry = ampJson.getObj("list", err);
if (arry && arry->isarray()) {
nCount = arry->get_arry_size();
std::string s;
std::wstring name;
for (int i = 0; i < arry->get_arry_size(); ++i) {
CJsonObj* pJson = arry->get_arry_at(i);
pJson->getString("name", s);
name = to_wchar_t(s);
g_SelfCamAmpPropNameVec.push_back(name);
}
}
}类似的还有
CBinBuf bfJson;
if(bfJson.ReadFile(m_file)) {
load(bfJson, 0); void load(const char* jstr, int merge) {
uint32_t now = (uint32_t)time(0);
CJsonObj js(jstr);
m_tm = js.getInt("tm", 0);
m_tmReport = js.getInt("tmReport", now);
int err;
CJsonObj* pList = js.getObj("list", err);
if(pList) {
std::vector<CDNINFO> v, vOld;
if(merge) {
for(int i=0; i<m_vCdn.size(); ++i) vOld.push_back(m_vCdn[i]);
}
m_vCdn.clear();
for(int i=0; i<pList->get_arry_size(); ++i) {
CDNINFO c;
CJsonObj* pItem = pList->get_arry_at(i);
c.from(pItem);
add(c, merge, vOld);
}
}
}
二、写数据
1、简单生成JSON
CJsonString bf("{");
bf.append_item("file", szUtf8);
bf.append_item("url", cbitem->url);
bf.append_item("wparam",(uint64_t)cbitem->wParam);
bf.close("}");又如，
void MakeDefaultJson(CJsonString &jsonStr){
jsonStr.append_item("is_beauty_on", 1); //美颜全局开关，0为关，1为开，默认为1
//滤镜
jsonStr.append_item("filter_level", 0); //0-10 ->[0,1] 取值范围 0.0-1.0,0.0为无效果，1.0为最大效果，默认值1.0
jsonStr.append_item("filter_name", "origin");
//美白
jsonStr.append_item("color_level", 2); //0-20 [0,2.0] 取值范围 0.0-2.0,0.0为无效果，2.0为最大效果，默认值0.2
//红润
jsonStr.append_item("red_level", 5); //0-20 [0,2.0] 取值范围 0.0-2.0,0.0为无效果，2.0为最大效果，默认值0.5
//磨皮程度
jsonStr.append_item("blur_level", 60); //[0,6.0] 磨皮程度，取值范围0.0-6.0，默认6.0
jsonStr.append_item("skin_detect", 0); //肤色检测开关，0为关，1为开 默认0
jsonStr.append_item("nonskin_blur_scale", 0); //0-10 [0,1]肤色检测之后非肤色区域的融合程度，取值范围0.0-1.0，默认0.0
jsonStr.append_item("heavy_blur", 0); //朦胧磨皮开关，0为清晰磨皮，1为朦胧磨皮
jsonStr.append_item("blur_type", 2); //此参数优先级比heavy_blur低，在使用时要将heavy_blur设为0，0 清晰磨皮 1 朦胧磨皮 2精细磨皮
jsonStr.append_item("blur_use_mask", 0); //ios端默认为1，其他端默认为0。1为开启基于人脸的磨皮mask，0为不使用mask正常磨皮。只在blur_type为2时生效。
jsonStr.append_item("sharpen", 2); //锐化程度，取值范围0.0-1.0，默认0.2
jsonStr.close();
//jsonStr.WriteFile("jsonInfoRes.json");
}2、对象数组JSON
CJsonString jsonStr;
jsonStr.begin("[");
for (auto &it : camIDResMap)
{
CJsonString camJson;
camJson.begin("{");
camJson.append_item("id", it.first.c_str());
camJson.append_item("res", it.second.c_str());
camJson.close("}");
jsonStr.append_obj(camJson);
}
jsonStr.close("]");
jsonStr.WriteFile(m_camjsonPath);3、嵌套对象
{
"list": [
{
"name": "亮度92",
"props": {
"BacklightCompensation": 1,
"Brightness": 92
},
"control": {
"Exposure": -4,
"Zoom": 100
}
},
{
"name": "高亮170",
"props": {
"BacklightCompensation": 0,
"WhiteBalance": -1
},
"control": {
"Exposure": -4,
"Zoom": 100
}
}
]
}
CJsonString jsonStr;
jsonStr.begin("[");
int nCount = 0;
for (auto &it : selfCamPros_)
{
std::map<std::string, int> &Map = it.second;
std::wstring nameW = it.first;
std::map<std::string, int> &ctlMap = selfCamControls_[nameW];
std::string name = to_string(nameW);
CJsonString camAllJson;
camAllJson.begin("{");
camAllJson.append_item("name", name.c_str());
CJsonString ampJsonObj;
ampJsonObj.begin("{");
auto oneAmpIt = ampMap.begin();
while (oneAmpIt != ampMap.end())
{
ampJsonObj.append_item(oneAmpIt->first.c_str(), oneAmpIt->second);
oneAmpIt++;
}
ampJsonObj.close("}");
camAllJson.append_obj("props", ampJsonObj);
CJsonString ctlJsonObj;
ctlJsonObj.begin("{");
auto oneCtlIt = ctlMap.begin();
while (oneCtlIt != ctlMap.end())
{
ctlJsonObj.append_item(oneCtlIt->first.c_str(), oneCtlIt->second);
oneCtlIt++;
}
ctlJsonObj.close("}");
camAllJson.append_obj("control", ctlJsonObj);
camAllJson.close("}");
jsonStr.append_obj(camAllJson);
}
jsonStr.close("]");
CJsonString listObjJsonS;
listObjJsonS.begin("{");
listObjJsonS.append_obj("list", jsonStr);
listObjJsonS.close("}");
listObjJsonS.WriteFile(sysJsonPath);又如，
CJsonString js, list;
js.append_item_u32("tm", m_tm);
js.append_item_u32("tmReport", m_tmReport);
format_json(list);
js.append_obj("list", list);
js.close("}");
js.WriteFile(m_file); void format_json(CJsonString& js) {
js.begin("[");
size_t n = m_vCdn.size();
for(int i=0; i<n; ++i) {
CDNINFO& c = m_vCdn[i];
CJsonString cdn;
c.format(cdn);
js.append_obj(cdn);
}
js.close("]");
}
又如，
CJsonString js,list;
list.begin("[");
for (auto it = nameVec.begin(); it != nameVec.end(); it++)
{
CJsonString jsObj;
std::wstring name = *it;
if (name == L"类别")
continue;
std::string name8 = nbase::UTF16ToUTF8(name);
jsObj.begin("{");
jsObj.append_item("name", name8.c_str());
jsObj.close("}");
list.append_obj(jsObj);
}
list.close("]");
js.append_obj("list", list);
js.close("}");
js.WriteFile("d:\\name.json");三、一个综合例子
{
"nameArr": [
{
"account": "张三"
},
{
"account": "王五"
},
{
"account": "李四"
}
],
"phoneArr": [
{
"account": "1800000"
}
]
}1、读JSON
std::set<std::wstring> acountSet_;
std::set<std::wstring> acountPhoneSet_;
void ReadAcountSet()
{
std::string path = GetXnwAccountJsonPath();
CBinBuf buf;
if (buf.Read(path.c_str()))
{
CJsonObj json(buf);
int err;
CJsonObj* arry = json.getObj("nameArr", err);
if (arry && arry->isarray())
{
for (int i = 0; i < arry->get_arry_size(); ++i)
{
CJsonObj * pJson = arry->get_arry_at(i);
std::string name;
pJson->getString("account", name);
if (!name.empty())
{
std::wstring namew = nbase::UTF8ToUTF16(name);
acountSet_.insert(namew);
}
}
}
arry = json.getObj("phoneArr", err);
if (arry && arry->isarray())
{
for (int i = 0; i < arry->get_arry_size(); ++i)
{
CJsonObj * pJson = arry->get_arry_at(i);
std::string name;
pJson->getString("account", name);
std::wstring namew = nbase::UTF8ToUTF16(name);
acountPhoneSet_.insert(namew);
}
}
}
}2、写JSON
void SaveAcountSet(){
std::string path = GetXnwAccountJsonPath();
CJsonString listJsonStr;
listJsonStr.begin("{");
CJsonString jsonStr;
jsonStr.begin("[");
for (auto &it : acountSet_)
{
std::string name = nbase::UTF16ToUTF8(it);
CJsonString json;
json.begin("{");
json.append_item("account", name.c_str());
json.close("}");
jsonStr.append_obj(json);
}
jsonStr.close("]");
listJsonStr.append_obj("nameArr", jsonStr);
CJsonString jsonStr2;
jsonStr2.begin("[");
for (auto &it : acountPhoneSet_)
{
std::string name = nbase::UTF16ToUTF8(it);
CJsonString json;
json.begin("{");
json.append_item("account", name.c_str());
json.close("}");
jsonStr2.append_obj(json);
}
jsonStr2.close("]");
listJsonStr.append_obj("phoneArr", jsonStr2);
listJsonStr.close("}");
listJsonStr.WriteFile(path.c_str());
}
