Qt5下解决了中文乱码的程序，可以用来参考其中解决乱码的方法

#include "ann.h" #include <time.h> #include <stdlib.h> #include <math.h> #include <stdio.h> Ann::Ann(QWidget * parent):QWidget(parent) { V=NULL; W=NULL; x=NULL; y=NULL; error=NULL; error=new D[6000]; F_label = new QLabel(QStringLiteral("设置泛化样本数:")); F_line=new QLineEdit(); F_openBtn=new QPushButton(QStringLiteral("选择泛化样本文件")); F_openline=new QLineEdit(); F_Btn=new QPushButton(QStringLiteral("泛化")); F_Btn->setEnabled(false); I_label = new QLabel(QStringLiteral("输入层神经元个数:")); H_label = new QLabel(QStringLiteral("隐藏层神经元个数:")); O_label = new QLabel(QStringLiteral("输出层神经元个数:")); S_label = new QLabel(QStringLiteral("神经网络学习速率:")); P_label = new QLabel(QStringLiteral("神经网络误差精度:")); N_label = new QLabel(QStringLiteral("训练网络的样本数:")); file_label=new QPushButton(QStringLiteral("打开文件")); I_line = new QLineEdit(); I_line->setValidator(new QIntValidator(1, 100, this)); H_line = new QLineEdit(); H_line->setValidator(new QIntValidator(1, 100, this)); O_line = new QLineEdit(); O_line->setValidator(new QIntValidator(1, 100, this)); S_line = new QLineEdit(); P_line = new QLineEdit(); N_line = new QLineEdit(); file_line = new QLineEdit(); setBtn = new QPushButton(QStringLiteral("设置")); openBtn = new QPushButton(QStringLiteral("开始训练")); openBtn->setEnabled(false); saveBtn = new QPushButton(QStringLiteral("保存权值并回想")); list = new QListWidget(this); plotter=new Plotter(this); QHBoxLayout * HLayout10 = new QHBoxLayout; HLayout10->addWidget(F_label); HLayout10->addWidget(F_line); HLayout10->addWidget(F_openBtn); HLayout10->addWidget(F_openline); HLayout10->addWidget(F_Btn); QHBoxLayout * HLayout8 = new QHBoxLayout; HLayout8->addWidget(file_label); HLayout8->addWidget(file_line); HLayout8->addWidget(openBtn); QHBoxLayout * HLayout9 = new QHBoxLayout; HLayout9->addWidget(setBtn); HLayout9->addWidget(saveBtn); QHBoxLayout * HLayout7 = new QHBoxLayout; HLayout7->addWidget(N_label); HLayout7->addWidget(N_line); QHBoxLayout * HLayout6 = new QHBoxLayout; HLayout6->addWidget(P_label); HLayout6->addWidget(P_line); QHBoxLayout * HLayout1 = new QHBoxLayout; HLayout1->addWidget(I_label); HLayout1->addWidget(I_line); QHBoxLayout * HLayout2 = new QHBoxLayout; HLayout2->addWidget(H_label); HLayout2->addWidget(H_line); QHBoxLayout * HLayout3 = new QHBoxLayout; HLayout3->addWidget(O_label); HLayout3->addWidget(O_line); QHBoxLayout * HLayout4 = new QHBoxLayout; HLayout4->addWidget(S_label); HLayout4->addWidget(S_line); QVBoxLayout * VLayout1 = new QVBoxLayout; VLayout1->addLayout(HLayout8); VLayout1->addLayout(HLayout1); VLayout1->addLayout(HLayout2); VLayout1->addLayout(HLayout3); VLayout1->addLayout(HLayout4); VLayout1->addLayout(HLayout6); VLayout1->addLayout(HLayout7); VLayout1->addLayout(HLayout9); QHBoxLayout * HLayout5 = new QHBoxLayout; HLayout5->addLayout(VLayout1); HLayout5->addWidget(list); QVBoxLayout * VLayout2 = new QVBoxLayout; VLayout2->addLayout(HLayout5); VLayout2->addWidget(plotter); VLayout2->addLayout(HLayout10); setLayout(VLayout2); connect(setBtn,SIGNAL(clicked()),this,SLOT(setup())); connect(file_label,SIGNAL(clicked()),this,SLOT(openfiledlg())); connect(openBtn,SIGNAL(clicked()),this,SLOT(R_data())); connect(saveBtn,SIGNAL(clicked()),this,SLOT(Save_Q())); connect(this,SIGNAL(send(D *,int )),plotter,SLOT(curve(D *,int ))); connect(this,SIGNAL(send1(D *,D *,int )),plotter,SLOT(curve1(D *,D *,int ))); connect(F_openBtn,SIGNAL(clicked()),this,SLOT(openfiledlg1())); connect(F_Btn,SIGNAL(clicked()),this,SLOT(F_test())); setWindowTitle(QStringLiteral("陈琦-神经网络用具")); } void Ann::openfiledlg() { QString s = QFileDialog::getOpenFileName(this,QStringLiteral("文件对话框"),QDir::currentPath()+"/data","text files(*.txt)"); //file_line -> setText(s.toAscii()); file_line -> setText(s); } void Ann::openfiledlg1() { if(F_line->text().isEmpty()) { QMessageBox::warning(this,QStringLiteral("警告"),QStringLiteral("请先设置泛化样本数!"),QMessageBox::Ok); } else { F_Btn->setEnabled(true); QString s = QFileDialog::getOpenFileName(this,QStringLiteral("文件对话框"),QDir::currentPath()+"/data","text files(*.txt)"); F_openline -> setText(s); } } void Ann::setup() { openBtn->setEnabled(true); if(I_line->text().trimmed().isEmpty()|H_line->text().trimmed().isEmpty() |O_line->text().trimmed().isEmpty()|S_line->text().trimmed().isEmpty() |P_line->text().trimmed().isEmpty()|N_line->text().trimmed().isEmpty()) { QMessageBox::warning(this,QStringLiteral("警告"),QStringLiteral("设置错误,请重新设置!"),QMessageBox::Ok); } else { IN=I_line->text().trimmed().toInt(); HN=H_line->text().trimmed().toInt(); ON=O_line->text().trimmed().toInt(); S=S_line->text().trimmed().toDouble(); P=P_line->text().trimmed().toDouble(); COUNT=N_line->text().trimmed().toInt(); V=new D[IN*HN]; W=new D[HN*ON]; x=new D[COUNT*IN]; y=new D[COUNT*ON]; } } void Ann::InitBp() { srand((unsigned)time(NULL)); for(int i=0;i<IN;i++) { for(int j=0;j<HN;j++) { V[i*HN+j] = rand()/(double)(RAND_MAX); //qDebug()<<"V["<<i<<"]["<<j<<"]:"<<V[i*HN+j]; } } for(int i=0;i<HN;i++) for(int j=0;j<ON;j++) W[i*ON+j] = rand()/(double)(RAND_MAX); } D Ann::fnet(D net) { //Sigmoid函数,神经网络激活函数 return 1/(1+exp(-net)); } void Ann::R_data() { openBtn->setEnabled(false); QFile file(file_line->text()); if(!file.exists()) { QMessageBox::warning(0,QStringLiteral("警告"),QStringLiteral("样本数据不存在!"),QMessageBox::Ok); return; } if(!file.open(QIODevice::ReadOnly)) { QMessageBox::warning(0,QStringLiteral("警告"),QStringLiteral("读取样本数据失败!"),QMessageBox::Ok); return; } QTextStream in(&file); in.setIntegerBase(10); for(int i=0;i<COUNT;i++) { int j = 0; while(j!=(IN+ON)&&!in.atEnd()) { if(j>(IN-1)) { in >> y[i*ON+(j-IN)]; //qDebug()<<"y["<<i<<"]["<<(j-IN)<<"]:"<<y[i*ON+(j-IN)]; } else { in >> x[i*IN+j]; //qDebug()<<"x["<<i<<"]["<<j<<"]:"<<x[i*IN+j]; } j++; } } InitBp(); TrainBp(); } void Ann::F_test() { COUNT=F_line->text().trimmed().toInt(); F_Btn->setEnabled(false); QFile file(F_openline->text()); if(!file.exists()) { QMessageBox::warning(0,QStringLiteral("警告"),QStringLiteral("样本数据不存在!"),QMessageBox::Ok); return; } if(!file.open(QIODevice::ReadOnly)) { QMessageBox::warning(0,QStringLiteral("警告")