毕业生就业管理系统代码

由于毕业生就业管理系统是一个比较大的项目，这里无法提供全部代码。不过，下面介绍一个简单的毕业生就业管理系统的实现思路，仅供参考。

首先，我们需要设计数据库，包括毕业生信息表、企业信息表、职位信息表等。可以使用MySQL等关系型数据库进行设计。

然后，我们需要使用C++语言编写程序，通过数据库连接，实现毕业生信息管理、就业信息管理、就业匹配功能、就业推荐功能和就业统计分析功能。可以使用ODBC等数据库访问接口，实现与数据库的交互。

接下来，我们需要设计用户友好的界面，方便用户使用。可以使用QT等UI设计工具，设计交互式的图形界面。

下面是一个简单的毕业生就业管理系统的代码框架，供参考：

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <mysql.h>      // MySQL C++ Connector头文件
#include <QtWidgets/QApplication>
#include <QtWidgets/QMainWindow>
#include <QtWidgets/QLabel>
#include <QtWidgets/QPushButton>
#include <QtWidgets/QLineEdit>
#include <QtWidgets/QComboBox>
#include <QtWidgets/QTableWidget>
#include <QtWidgets/QHeaderView>

using namespace std;

// 定义毕业生信息结构体
struct Graduate {
    string id;          // 学生ID
    string name;        // 学生姓名
    string gender;      // 学生性别
    string major;       // 学生专业
    string education;   // 学生学历
    string experience;  // 工作经验
};

// 定义企业信息结构体
struct Company {
    string id;          // 企业ID
    string name;        // 企业名称
    string type;        // 企业类型
    string scale;       // 企业规模
    string industry;    // 企业行业
    string location;    // 企业地点
};

// 定义职位信息结构体
struct Job {
    string id;          // 职位ID
    string name;        // 职位名称
    string type;        // 职位类型
    string salary;      // 薪资待遇
    string description; // 职位描述
};

// 定义数据库连接对象
MYSQL* conn;

// 定义毕业生信息表名、企业信息表名、职位信息表名
const string TABLE_GRADUATE = "graduate";
const string TABLE_COMPANY = "company";
const string TABLE_JOB = "job";

// 初始化数据库连接
bool initialize()
{
    conn = mysql_init(NULL);
    if (conn == NULL) {
        cerr << "Failed to initialize MySQL connection: " << mysql_error(conn) << endl;
        return false;
    }
    if (mysql_real_connect(conn, "localhost", "username", "password", "database", 0, NULL, 0) == NULL) {
        cerr << "Failed to connect to MySQL server: " << mysql_error(conn) << endl;
        return false;
    }
    return true;
}

// 查询毕业生信息
vector<Graduate> queryGraduates(const string& keyword)
{
    vector<Graduate> graduates;
    // 构造SQL查询语句
    string sql = "SELECT * FROM " + TABLE_GRADUATE;
    if (!keyword.empty()) {
        sql += " WHERE name LIKE '%" + keyword + "%' OR major LIKE '%" + keyword + "%' OR experience LIKE '%" + keyword + "%'";
    }
    // 执行SQL查询语句
    if (mysql_query(conn, sql.c_str()) == 0) {
        MYSQL_RES* result = mysql_store_result(conn);
        if (result != NULL) {
            MYSQL_ROW row;
            while ((row = mysql_fetch_row(result)) != NULL) {
                Graduate graduate;
                graduate.id = row[0];
                graduate.name = row[1];
                graduate.gender = row[2];
                graduate.major = row[3];
                graduate.education = row[4];
                graduate.experience = row[5];
                graduates.push_back(graduate);
            }
            mysql_free_result(result);
        }
    } else {
        cerr << "Failed to query graduates: " << mysql_error(conn) << endl;
    }
    return graduates;
}

// 查询企业信息
vector<Company> queryCompanies(const string& keyword)
{
    vector<Company> companies;
    // 构造SQL查询语句
    string sql = "SELECT * FROM " + TABLE_COMPANY;
    if (!keyword.empty()) {
        sql += " WHERE name LIKE '%" + keyword + "%' OR type LIKE '%" + keyword + "%' OR scale LIKE '%" + keyword + "%' OR industry LIKE '%" + keyword + "%' OR location LIKE '%" + keyword + "%'";
    }
    // 执行SQL查询语句
    if (mysql_query(conn, sql.c_str()) == 0) {
        MYSQL_RES* result = mysql_store_result(conn);
        if (result != NULL) {
            MYSQL_ROW row;
            while ((row = mysql_fetch_row(result)) != NULL) {
                Company company;
                company.id = row[0];
                company.name = row[1];
                company.type = row[2];
                company.scale = row[3];
                company.industry = row[4];
                company.location = row[5];
                companies.push_back(company);
            }
            mysql_free_result(result);
        }
    } else {
        cerr << "Failed to query companies: " << mysql_error(conn) << endl;
    }
    return companies;
}

// 查询职位信息
vector<Job> queryJobs(const string& keyword)
{
    vector<Job> jobs;
    // 构造SQL查询语句
    string sql = "SELECT * FROM " + TABLE_JOB;
    if (!keyword.empty()) {
        sql += " WHERE name LIKE '%" + keyword + "%' OR type LIKE '%" + keyword + "%' OR salary LIKE '%" + keyword + "%' OR description LIKE '%" + keyword + "%'";
    }
    // 执行SQL查询语句
    if (mysql_query(conn, sql.c_str()) == 0) {
        MYSQL_RES* result = mysql_store_result(conn);
        if (result != NULL) {
            MYSQL_ROW row;
            while ((row = mysql_fetch_row(result)) != NULL) {
                Job job;
                job.id = row[0];
                job.name = row[1];
                job.type = row[2];
                job.salary = row[3];
                job.description = row[4];
                jobs.push_back(job);
            }
            mysql_free_result(result);
        }
    } else {
        cerr << "Failed to query jobs: " << mysql_error(conn) << endl;
    }
    return jobs;
}

// 在表格中显示毕业生信息
void showGraduates(QTableWidget* table, const vector<Graduate>& graduates)
{
    table->clearContents();
    table->setRowCount(graduates.size());
    for (int row = 0; row < graduates.size(); row++) {
        const Graduate& graduate = graduates[row];
        table->setItem(row, 0, new QTableWidgetItem(QString::fromStdString(graduate.id)));
        table->setItem(row, 1, new QTableWidgetItem(QString::fromStdString(graduate.name)));
        table->setItem(row, 2, new QTableWidgetItem(QString::fromStdString(graduate.gender)));
        table->setItem(row, 3, new QTableWidgetItem(QString::fromStdString(graduate.major)));
        table->setItem(row, 4, new QTableWidgetItem(QString::fromStdString(graduate.education)));
        table->setItem(row, 5, new QTableWidgetItem(QString::fromStdString(graduate.experience)));
    }
}

// 在表格中显示企业信息
void showCompanies(QTableWidget* table, const vector<Company>& companies)
{
    table->clearContents();
    table->setRowCount(companies.size());
    for (int row = 0; row < companies.size(); row++) {
        const Company& company = companies[row];
        table->setItem(row, 0, new QTableWidgetItem(QString::fromStdString(company.id)));
        table->setItem(row, 1, new QTableWidgetItem(QString::fromStdString(company.name)));
        table->setItem(row, 2, new QTableWidgetItem(QString::fromStdString(company.type)));
        table->setItem(row, 3, new QTableWidgetItem(QString::fromStdString(company.scale)));
        table->setItem(row, 4, new QTableWidgetItem(QString::fromStdString(company.industry)));
        table->setItem(row, 5, new QTableWidgetItem(QString::fromStdString(company.location)));
    }
}

// 在表格中显示职位信息
void showJobs(QTableWidget* table, const vector<Job>& jobs)
{
    table->clearContents();
    table->setRowCount(jobs.size());
    for (int row = 0; row < jobs.size(); row++) {
        const Job& job = jobs[row];
        table->setItem(row, 0, new QTableWidgetItem(QString::fromStdString(job.id)));
        table->setItem(row, 1, new QTableWidgetItem(QString::fromStdString(job.name)));
        table->setItem(row, 2, new QTableWidgetItem(QString::fromStdString(job.type)));
        table->setItem(row, 3, new QTableWidgetItem(QString::fromStdString(job.salary)));
        table->setItem(row, 4, new QTableWidgetItem(QString::fromStdString(job.description)));
    }
}

// 主函数
int main(int argc, char *argv[])
{
    // 初始化QT应用程序
    QApplication a(argc, argv);

    // 初始化数据库连接
    if (!initialize()) {
        return -1;
    }

    // 创建主窗口
    QMainWindow mainWindow;
    mainWindow.setWindowTitle("Graduate Employment Management System");
    mainWindow.setFixedSize(800, 600);

    // 创建标签和文本框
    QLabel* lblKeyword = new QLabel("Keyword:", &mainWindow);
    QLineEdit* txtKeyword = new QLineEdit(&mainWindow);
    txtKeyword->setFixedWidth(200);

    // 创建按钮
    QPushButton* btnSearch = new QPushButton("Search", &mainWindow);
    QPushButton* btnClear = new QPushButton("Clear", &mainWindow);

    // 创建下拉框和标签
    QComboBox* cboType = new QComboBox(&mainWindow);
    cboType->addItem("Graduates");
    cboType->addItem("Companies");
    cboType->addItem("Jobs");
    QLabel* lblType = new QLabel("Type:", &mainWindow);

    // 创建表格
    QTableWidget* table = new QTableWidget(&mainWindow);
    table->setColumnCount(6);
    table->setHorizontalHeaderLabels({ "ID", "Name", "Gender", "Major", "Education", "Experience" });
    table->setEditTriggers(QAbstractItemView::NoEditTriggers);
    table->setSelectionBehavior(QAbstractItemView::SelectRows);
    table->setSelectionMode(QAbstractItemView::SingleSelection);
    table->horizontalHeader()->setSectionResizeMode(QHeaderView::Stretch);
    table->verticalHeader()->setVisible(false);

    // 添加控件到主窗口
    lblKeyword->move(20, 20);
    txtKeyword->move(80, 20);
    btnSearch->move(300, 20);
    btnClear->move(400, 20);
    cboType->move(560, 20);
    lblType->move(520, 20);
    table->move(20, 70);
    table->setFixedSize(760, 500);

    // 关联按钮的点击事件
    QObject::connect(btnSearch, &QPushButton::clicked, [&]() {
        string keyword = txtKeyword->text().toStdString();
        if (cboType->currentIndex() == 0) {
            vector<Graduate> graduates = queryGraduates(keyword