Qt词典搜索

Qt词典搜索

采用阿凡达数据-API数据接口及爱词霸API数据接口实现词典搜索功能，实例字符串搜索接口分别为：中文词组采用“词典”，中文单个字采用“中华字典”，英文或其他字符采用“爱词霸”；
对应的API接口：
http://api.avatardata.cn/CiHai/LookUp?key=[申请的APPKEY]&keyword=[搜索内容]
http://api.avatardata.cn/XinHuaZiDian/LookUp?key=[申请的APPKEY]&content=[搜索内容]
http://dict-co.iciba.com/api/dictionary.php?key=[申请的APPKEY]&w=[搜索内容]

1.字符串搜索分类

void DictLookUpKeyRequest(const QString &strSearchKey)
{
    QString strDictLookupKey = strSearchKey.trimmed();
    if (strDictLookupKey.isEmpty())
    {
        emit DictLookUpKeyFinished(false, "---INVALID_URL---");
        return;
    }

    QString strLookUpUrl = "";    
    if (strDictLookupKey.contains(QRegExp("[\\x4e00-\\x9fa5]")))
    {
        //search key contains Chinese character
        if (strDictLookupKey.contains(QRegExp("[A-Za-z0-9]")))
        {
            emit DictLookUpKeyFinished(false, "---NO_SUPPORT---");
            return;
        }

        if (strDictLookupKey.size() >= 2)
        {
            strLookUpUrl = QString("http://api.avatardata.cn/CiHai/LookUp?key=d19e2a742a7b467c83a63bdd263b371b&keyword=%1").arg(strSearchKey);            
        }
        else
        {
            strLookUpUrl = QString("http://api.avatardata.cn/XinHuaZiDian/LookUp?key=175dcbe2c06e49db9eef7f76045ddb55&content=%1").arg(strSearchKey);
        }
    }
    else
    {
        //search other key
        strLookUpUrl = QString("http://dict-co.iciba.com/api/dictionary.php?key=B602AC1E01426961CADF60B71CA97484&w=%1").arg(strSearchKey);
    }

    HttpDictLookUpRequest(strLookUpUrl); //QNetworkRequest
}

2.QNetworkRequest搜索网络请求

void HttpDictLookUpRequest(const QUrl& url)
{
    QNetworkReply *reply = mpManager->get(QNetworkRequest(url));

    connect(reply, &QNetworkReply::finished, this, [this]()
    {
        QNetworkReply* reply = static_cast<QNetworkReply*>(sender());
        reply->deleteLater();

        if (reply->error())
        {
            emit HttpGetRequestFinished(false, "");
        }
        else
        {
            emit HttpGetRequestFinished(true, reply->readAll());
        }
    });
}

3.搜索返回数据处理

void OnDictLookUpResult(bool bFinsihed, const QString& DictLookUpKeyReplyStr)
{
    QString strTextResult = QString("< font color=#6e6e6e >%1</font>").arg(tr("The query word is not entered in the dictionary, please try again later"));
    if (bFinsihed)
    {
        if (DictLookUpKeyReplyStr.contains("</dict>"))
        {
            //iciba search result
            if (!DictLookUpKeyReplyStr.contains("<acceptation>"))
            {
                mpTextEdit->setText(strTextResult);
                return;
            }

            QXmlStreamReader reader(DictLookUpKeyReplyStr);
            while (!reader.atEnd())
            {
                reader.readNext();
                if (reader.isStartElement())
                {
                    if (reader.name().contains("key"))
                    {
                        strTextResult = "";
                        strTextResult.append(QString("< font color=#4a4a4a ><b>%1</b></font>").arg(reader.readElementText()));
                    }
                    else if (reader.name().contains("pos") || reader.name().contains("acceptation"))
                    {
                        strTextResult.append(QString("< font color=#6e6e6e ><br>%1</font>").arg(reader.readElementText()));
                    }                    
                }
            }
        }
        else
        {
            QJsonParseError jsonParseError;
            QJsonDocument jsonDocument = QJsonDocument::fromJson(DictLookUpKeyReplyStr.toUtf8(), &jsonParseError);
            if (jsonParseError.error == QJsonParseError::NoError)
            {
                QJsonObject jsonObj = jsonDocument.object();
                int returnValue = jsonObj.value("return_code").toInt();
                if (returnValue == 0)
                {
                    QJsonObject resultJsonObj = jsonObj.value("result").toObject();
                    if (!resultJsonObj.value("words").toString().isEmpty())
                    {
                        //CiHai search result
                        strTextResult = QString("< font color=#4a4a4a ><b>%1</b></font>").arg(resultJsonObj.value("words").toString());
                        strTextResult.append(QString("< font color=#6e6e6e ><br>%1</font>").arg(resultJsonObj.value("content").toString()));

                    }
                    else
                    {
                        //XinHuaZiDian search result
                        QJsonArray resultArray = jsonObj.value("result").toArray(); 
                        if (resultArray.size() > 0)
                        {
                            QJsonObject resultArrayJsonObj = resultArray.at(0).toObject();
                            strTextResult = QString("< font color=#4a4a4a ><b>%1</b></font>").arg(resultArrayJsonObj.value("hanzi").toString());
                            if (!resultArrayJsonObj.value("jianjie").toString().isEmpty())
                            {
                                strTextResult.append(QString("< font color=#6e6e6e ><br>%1</font>").arg(resultArrayJsonObj.value("jianjie").toString()));
                            }
                            if (!resultArrayJsonObj.value("xiangjie").toString().isEmpty())
                            {
                                strTextResult.append(QString("< font color=#6e6e6e ><br>%1</font>").arg(resultArrayJsonObj.value("xiangjie").toString()));
                            }                                
                        }
                    }
                }
            }

        }        
    }

    mpTextEdit->setText(strTextResult);
}