思路
将指定路径下的xml文件读取到列表中
插入和删除按钮仅完成界面上的插入，不对xml文件进行操作
保存按钮，清空xml文件，并遍历界面列表中的数据存入xml文件
1. pro文件中引入xml库
#添加xml库QT += core gui xml
2. .h文件
#ifndef TESTXML_H#define TESTXML_H#include <QMainWindow>#include <QDomComment>//QDomNodeList头文件#include <QDir>#include <QFile>#include <QDebug>#include <QPushButton>namespace Ui {class TestXml;}class TestXml : public QMainWindow{Q_OBJECTpublic:explicit TestXml(QWidget *parent = nullptr);~TestXml();private slots:void on_pushButton_wXml_clicked();//写入xml数据void on_pushButton_rXml_clicked();//读取xml数据void on_pushButton_insert_clicked();//插入void on_deleteBtn_slot();//删除private:Ui::TestXml *ui;QFile m_file;QString currFilePath; //当前文件路径QString currFileName; //当前文件名字};#endif // TESTXML_H
3…cpp文件
#include "testxml.h"#include "ui_testxml.h"TestXml::TestXml(QWidget *parent) :QMainWindow(parent),ui(new Ui::TestXml){ui->setupUi(this);QDir dir;currFilePath = "D:/wmt/test/TestXml";//根据自己的目录来写currFileName = "/TestXml.xml";//文件名}TestXml::~TestXml(){delete ui;}void TestXml::on_pushButton_rXml_clicked(){m_file.setFileName(currFilePath + currFileName); //没有则创建文件if(! m_file.open(QIODevice::ReadOnly | QFile::Text)){qDebug() << " Read Open false";return;}QDomDocument doc;if(!doc.setContent(&m_file)){m_file.close();qDebug() << " Read Open Xml false";return;}int rowNum= ui->tableWidget->rowCount();for(int i = 0 ; i < rowNum ; i++)//清空列表{ui->tableWidget->removeRow(0);}QDomElement root = doc.documentElement(); //读取根节点QDomNode node = root.firstChild(); //读取第一个父节点while(!node.isNull()){QDomNodeList sonList = node.childNodes(); //读取子结点集合QString rootName = node.toElement().tagName(); //读取父节点名字if(pare("people") == 0) //读取子结点数据{int row=ui->tableWidget->rowCount();//表格行数ui->tableWidget->insertRow(row);for(int sonNode = 0;sonNode < sonList.size();sonNode++){QDomElement sonElement = sonList.at(sonNode).toElement(); //获取子结点if(sonElement.toElement().tagName().compare("Id") == 0)//与取出子结点进行对比{ui->tableWidget->setItem(row,0,new QTableWidgetItem(sonElement.text()));}else if(sonElement.toElement().tagName().compare("Name") == 0){ui->tableWidget->setItem(row,1,new QTableWidgetItem(sonElement.text()));}else if(sonElement.toElement().tagName().compare("Sex") == 0){ui->tableWidget->setItem(row,2,new QTableWidgetItem(sonElement.text()));}}QPushButton *btn=new QPushButton;btn->setText("删除");btn->setStyleSheet("QPushButton{border:none;background:transparent;}");ui->tableWidget->setCellWidget(row,3,btn);connect(btn,SIGNAL(clicked()),this,SLOT(on_deleteBtn_slot()));}node = node.nextSibling(); //读取下一父节点}m_file.close();}//读取xml数据void TestXml::on_pushButton_wXml_clicked(){m_file.setFileName(currFilePath + currFileName); //没有则创建文件if(!m_file.open(QIODevice::ReadWrite | QIODevice::Truncate | QFile::Text)){qDebug() << " Write Open false";return;}QDomDocument doc;QDomProcessingInstruction version;version = doc.createProcessingInstruction("xml","version = \"1.0\" encoding = \"GB2312\"");doc.appendChild(version);QDomElement root = doc.createElement("data"); //创建顶节点doc.appendChild(root);for(int i=0;i<ui->tableWidget->rowCount();i++){QDomElement itemRootElement = doc.createElement("people"); //创建父节点{QDomElement node1 = doc.createElement("Id"); //创建子结点QDomText domText1 = doc.createTextNode("Id");domText1.setData(ui->tableWidget->item(i,0)->text()); //设置子结点数据node1.appendChild(domText1); //将子节点数据绑定itemRootElement.appendChild(node1);//将子节点绑定到父节点QDomElement node2 = doc.createElement("Name");QDomText domText2 = doc.createTextNode("Name");domText2.setData(ui->tableWidget->item(i,1)->text());node2.appendChild(domText2);itemRootElement.appendChild(node2);QDomElement node3 = doc.createElement("Sex");QDomText domText3 = doc.createTextNode("Sex");domText3.setData(ui->tableWidget->item(i,2)->text());node3.appendChild(domText3);itemRootElement.appendChild(node3);}root.appendChild(itemRootElement); //绑定到顶结点}m_file.write(doc.toString().toLocal8Bit().data());m_file.close();}//插入void TestXml::on_pushButton_insert_clicked(){if(ui->lineEdit_id->text().isEmpty() || ui->lineEdit_name->text().isEmpty()){qDebug()<<"输入内容为空";return;}QPushButton *btn=new QPushButton;btn->setText("删除");btn->setStyleSheet("QPushButton{border:none;background:transparent;}");int row = ui->tableWidget->rowCount();ui->tableWidget->insertRow(row);ui->tableWidget->setItem(row,0,new QTableWidgetItem(ui->lineEdit_id->text()));ui->tableWidget->setItem(row,1,new QTableWidgetItem(ui->lineEdit_name->text()));ui->tableWidget->setItem(row,2,new QTableWidgetItem(ui->comboBox_sex->currentText()));ui->tableWidget->setCellWidget(row,3,btn);connect(btn,SIGNAL(clicked()),this,SLOT(on_deleteBtn_slot()));ui->lineEdit_id->clear();//清除输入框ui->lineEdit_name->clear();}//删除void TestXml::on_deleteBtn_slot(){ui->tableWidget->removeRow(ui->tableWidget->currentRow());}
4. xml文件如下
5. 运行效果图
源码下载链接
/download/WMT1520/21738505
参考链接：
/weixin_43519792/article/details/106366530
