学习日记 » json

json数据分析http网页抓取

admin — Thu, 04 Apr 2013 14:04:34 +0000

主要是对一些通用功能的简单封装，包括：
json数据分析类
文件访问类，
htttp链接类（支持异步链接，一句代码即可抓取一个网页）
线程池类，
任务类
正则表达式类，主要是对开源的pcre的封装
字符串类，嵌入正则表达式支持
……
源码链接地址：
https://github.com/qqjack/MyLibOfMySelf
欢迎修改，完善，添加新通用功能。。谢谢

int main(int argc, char* argv[])
{
	CMyAsyncHttp  asyncHttp;

//	CMyThreadPool	threadPool(true);

	CMyAsyncHttp::InitalHttp();
//	asyncHttp.SetTargetThreadPool(&threadPool);
	asyncHttp.SetAcceptType("*/*");
	asyncHttp.AddHttpHeader("Accept-Charset: utf-8\r\n");
	asyncHttp.AddHttpHeader("Accept-Encoding: gzip, deflate\r\n");
	asyncHttp.Get("http://www.youku.com/","");

	WaitForSingleObject(asyncHttp.m_FinishNotify,-1);
	return 0;
}

Qt 解析 JSON 一例

admin — Thu, 04 Apr 2013 13:05:55 +0000

QString http_response =
            "{\"key\":\"a99fdd865c2-10000\",\"oid\":1000055,\"expires
\":0000,\"secret\" :\"509c03edfdc7\",\"sign\":\"f0dd9e5226d0e77\"}";

QScriptValue sc;
QScriptEngine engine;
sc = engine.evaluate("value = " + http_response);

QScriptValueIterator it(sc);
while (it.hasNext()) {
    it.next();
    qDebug() << it.name() << ": " << it.value().toString();
}

Qjson 将 QVariant 对象转为 JSON 数据

admin — Thu, 04 Apr 2013 13:03:45 +0000

//cpp
QVariantList people;
QVariantMap bob;
bob.insert("Name", "Bob");
bob.insert("Phonenumber", 123);
QVariantMap alice;
alice.insert("Name", "Alice");
alice.insert("Phonenumber", 321);
people << bob << alice;
QJson::Serializer serializer;
QByteArray json = serializer.serialize(people);
qDebug() << json;

//qDebug
"[ { "Name" : "Bob", "Phonenumber" : 123 },
   { "Name" : "Alice", "Phonenumber" : 321 } ]"

Qjson: QObject 对象序列化为 JSON 数据

admin — Thu, 04 Apr 2013 12:34:47 +0000

//Person.h
class Person : public QObject
{
 Q_OBJECT

 Q_PROPERTY(QString name READ name WRITE setName)
 Q_PROPERTY(int phoneNumber READ phoneNumber WRITE setPhoneNumber)
 Q_PROPERTY(Gender gender READ gender WRITE setGender)
 Q_PROPERTY(QDate dob READ dob WRITE setDob)
 Q_ENUMS(Gender)

public:
   Person(QObject* parent = 0);
   ~Person();

   QString name() const;
   void setName(const QString& name);

   int phoneNumber() const;
   void setPhoneNumber(const int  phoneNumber);

   enum Gender {Male, Female};
   void setGender(Gender gender);
   Gender gender() const;

   QDate dob() const;
   void setDob(const QDate& dob);

 private:
   QString m_name;
   int m_phoneNumber;
   Gender m_gender;
   QDate m_dob;
};

//.cpp
Person person;
person.setName("Flavio");
person.setPhoneNumber(123456);
person.setGender(Person::Male);
person.setDob(QDate(1982, 7, 12));

QVariantMap variant = QObjectHelper::qobject2qvariant(&person);
Serializer serializer;
qDebug() << serializer.serialize( variant);

//qDebug
{ "dob" : "1982-07-12",
  "gender" : 0,
  "name" : "Flavio",
  "phoneNumber" : 123456 }