IM-linux一款linux下即时通讯软件实现（一）登陆注册实现

此部分比较简单，包含两个dialog。

登陆界面：login.cpp

界面显示部分：

    username_l = new QLabel(tr("用户名"),this);
    username_l->move(70,80);
    username_e = new QLineEdit(this);
    username_e->move(140,80);
    username_e->setPlaceholderText(tr("请输入用户名"));

    password_l = new QLabel(tr("password"),this);
    password_l->move(70,130);
    password_e = new QLineEdit(this);
    password_e->move(140,130);
    password_e->setPlaceholderText(tr("请输入密码"));

    log_btn = new QPushButton(tr("登陆"),this);
    log_btn->move(50,200);
    reg_btn = new QPushButton(tr("注册"),this);
    reg_btn->move(210,200);

    nam = new QNetworkAccessManager(this);

    connect(log_btn,SIGNAL(clicked()),this,SLOT(loginTo()));
    connect(reg_btn,SIGNAL(clicked()),this,SLOT(registerTo()));
    connect(nam,SIGNAL(finished(QNetworkReply*)),this,SLOT(finishedSlot(QNetworkReply*)));

登陆处理逻辑部分：

void Login::loginTo()
{
    if(username_e->text().isEmpty() || password_e->text().isEmpty()) {
        QMessageBox::warning(this,tr("提示"),tr("用户名和密码不能为空！"),QMessageBox::Yes);
        return;
    }
    QUrl url("http://119.29.36.247:8080/campus/webapi/users/log_info");
    QJsonObject log_info;
    log_info.insert("username",username_e->text());
    log_info.insert("password",password_e->text());
    QNetworkRequest request;
    request.setUrl(url);
    request.setHeader(QNetworkRequest::ContentTypeHeader,"application/json");
    nam->post(request,QJsonDocument(log_info).toJson());
}

void Login::finishedSlot(QNetworkReply *reply) {
    QVariant statusCodeV = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
    qDebug()<attribute(QNetworkRequest::RedirectionTargetAttribute);

    if(reply->error() == QNetworkReply::NoError) {
        QByteArray bytes = reply->readAll();
        QString string = QString::fromUtf8(bytes);
        qDebug()<deleteLater();
}

注册界面：register.cpp

界面显示部分：

username_l = new QLabel(tr("用户名"),this);
    username_l->move(70,70);
    username_e = new QLineEdit(this);
    username_e->move(160,70);
    username_e->setPlaceholderText(tr("请输入用户名"));
    password_l = new QLabel(tr("密码"),this);
    password_l->move(70,100);
    password_e = new QLineEdit(this);
    password_e->move(160,100);
    password_e->setPlaceholderText("请输入密码");
    password_e->setEchoMode(QLineEdit::Password);
    repassword_l = new QLabel(tr("确认密码"),this);
    repassword_l->move(70,130);
    repassword_e = new QLineEdit(this);
    repassword_e->move(160,130);
    repassword_e->setPlaceholderText(tr("请再次输入密码"));
    repassword_e->setEchoMode(QLineEdit::Password);
    sex = new QButtonGroup(this);
    sex_man = new QRadioButton(tr("男"),this);
    sex_man->move(70,160);
    sex_man->setChecked(true);
    sex_woman = new QRadioButton(tr("女"),this);
    sex_woman->move(150,160);
    sex->addButton(sex_man,1);
    sex->addButton(sex_woman,2);
    submit = new QPushButton(tr("提交"),this);
    submit->move(70,190);
    cancel = new QPushButton(tr("取消"),this);
    cancel->move(220,190);

    nam = new QNetworkAccessManager(this);

    connect(submit,SIGNAL(clicked(bool)),this,SLOT(reg_submit()));
    connect(cancel,SIGNAL(clicked(bool)),this,SLOT(close()));
    connect(nam,SIGNAL(finished(QNetworkReply*)),this,SLOT(get_reply(QNetworkReply*)));

注册逻辑处理部分：

void Register::reg_submit() {
    if(username_e->text().isEmpty() || password_e->text().isEmpty() || repassword_e->text().isEmpty()) {
        QMessageBox::warning(this,tr("提示"),tr("用户名/密码不能为空！"),QMessageBox::Yes);
    }
    else if(password_e->text() != repassword_e->text()) {
        QMessageBox::warning(this,tr("提示"),tr("两次密码不匹配！"),QMessageBox::Yes);
    }
    else {
        QUrl url("http://119.29.36.247:8080/campus/webapi/users/reg_info");
        QJsonObject reg_info;
        reg_info.insert("username",username_e->text());
        reg_info.insert("password",password_e->text());
        reg_info.insert("sex",sex->checkedId());
        QNetworkRequest request;
        request.setUrl(url);
        request.setHeader(QNetworkRequest::ContentTypeHeader,"application/json");
        nam->post(request,QJsonDocument(reg_info).toJson());
    }
}

void Register::get_reply(QNetworkReply *reply) {
    QVariant statusCodeV = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute);
    qDebug()<attribute(QNetworkRequest::RedirectionTargetAttribute);

    if(reply->error() == QNetworkReply::NoError) {
        QByteArray bytes = reply->readAll();
        QString string = QString::fromUtf8(bytes);
        qDebug()<deleteLater();
}

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