大虾们，给点建议吧
本人大四，现在开始着手准备毕业设计，想做一个网站，但是不知道具体要做什么系统，大家给点意见吧。
[解决办法]
毕业了 似乎大家都有这个想法
但是会呗事实打败的，lz还是找个工作，好好积累经验比较好
[解决办法]
常见的信息管理系统吧，可以借此温习本科知识，学习点新的内容
[解决办法]
package 信息管理系统;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.ObjectInputStream;import java.io.ObjectOutputStream;import java.io.Serializable;import java.util.ArrayList;import java.util.Collections;import java.util.Comparator;import java.util.List;import java.util.Scanner;import java.util.Set;import java.util.TreeSet;public class StudentManageSystem { /** StudentManager中提供的操作菜单 * */ public static void showMenus() { String format = " %s\n"; System.out.println("----------------功能菜单------------------"); System.out.printf(format, "0. 退出管理"); System.out.printf(format, "1. 功能菜单"); System.out.printf(format, "2. 显示学生"); System.out.printf(format, "3. 查询学生"); System.out.printf(format, "4. 添加学生"); System.out.printf(format, "5. 删除学生"); System.out.printf(format, "6. 修改学生"); System.out.printf(format, "7. 读取学生"); System.out.printf(format, "8. 保存学生"); System.out.println("-------------------结束------------------"); System.out.println(); } /** 管理学生信息 * */ public void manageStudents() throws IOException { Scanner scanner = new Scanner(System.in); StudentDao sd = new StudentDao(); StudentService ss = new StudentService(sd, scanner); showMenus(); int op = -1; while (op != 0) { System.in.skip(System.in.available()); System.out.print("输入菜单编号: "); op = scanner.nextInt(); scanner.nextLine(); // 吃掉输入菜单编号后无效的回车字符 try { switch (op) { case 0: break; case 1: showMenus(); break; case 2: ss.showStudents(); break; case 3: ss.findStudents(); break; case 4: ss.addStudent(); break; case 5: ss.removeStudent(); break; case 6: ss.updateStudent(); break; case 7: ss.readStudents(); break; case 8: ss.saveStudents(); break; default: System.out.println("没有提供此项操作\n"); } } catch (Exception e) { System.out.println("\t" + e.getMessage() + "\n"); } } } public static void main(String[] args) throws IOException { StudentManageSystem sm = new StudentManageSystem(); sm.manageStudents(); System.out.println("程序结束"); }}/** Service中的很多功能都是委托给Dao对象去完成 * */class StudentService { private StudentDao studentDao; private Scanner scanner; public StudentService(StudentDao studentDao, Scanner scanner) { this.studentDao = studentDao; this.scanner = scanner; } // 添加学生 public void addStudent() { System.out.print("输入学生资料进行添加，格式为id|name|age: "); // name|age String info = scanner.nextLine(); Student s = Student.buildStudent(info); if (studentDao.hasStudent(s)) { throw new RuntimeException("此学生信息已经存在"); } studentDao.addStudent(s); System.out.println("\t添加成功\n"); } // 删除学生 public void removeStudent() { System.out.print("输入学生id进行删除: "); int id = scanner.nextInt(); Student s = studentDao.findStudent(id); if (s == null) { System.out.println("\t查无此学生"); } else { studentDao.removeStudent(s); System.out.println("\t已经删除学生: " + s); } System.out.println(); } /** 修改学生信息 * */ public void updateStudent() { System.out.print("修改学生信息，输入学生id: "); int id = scanner.nextInt(); Student s = studentDao.findStudent(id); if (s == null) { System.out.println("\t查无此学生"); } else { scanner.nextLine(); // 吃掉回车 System.out.println("\t学生: " + s); System.out.print("\t输入新的信息，格式为name|age: "); String line = scanner.nextLine().trim(); if (!line.matches("\\w+\\|\\d+")) { throw new RuntimeException("输入的修改学生信息格式不对"); } // 修改已搜索到的学生信息 String[] infos = line.split("\\|"); String name = infos[0]; int age = Integer.parseInt(infos[1]); s.setName(name); s.setAge(age); System.out.println("\t修改完成"); } System.out.println(); } /** 输入学生的学号或者姓名进行查找 * */ public void findStudents() { System.out.print("输入学生ID或者姓名进行查询: "); String info = scanner.nextLine().trim(); List<Student> ss = new ArrayList<Student>(); // 如果输入的是数字，默认为学号 if (info.matches("\\d+")) { int id = Integer.parseInt(info); Student s = studentDao.findStudent(id); if (s != null) { ss.add(s); } } else { ss = studentDao.findStudents(info); } // 输出查询结果 if (ss.size() == 0) { System.out.println("查无此学生"); } else { for (Student s : ss) { System.out.println("\t" + s); } } System.out.println(); } /** 显示已经有的学生信息 * */ public void showStudents() { Set<Student> students = studentDao.getStudents(); if (students.size() == 0) { System.out.println("\t列表中还没有任何学生"); return; } System.out.println("========所有学生信息========"); for (Student s : students) { System.out.println("\t" + s); } System.out.println(); } public void saveStudents() { studentDao.saveStudents(); System.out.println("\t保存成功"); } public void readStudents() { studentDao.readStudents(); System.out.println("\t读取完成"); }}/** 对学生数据进行执久化操作 * */class StudentDao { private Set<Student> students; private String fileName = "students.dat"; public StudentDao() { students = new TreeSet<Student>(new StudentComparator()); } /** 添加学生 * */ public void addStudent(Student student) { students.add(student); } /** 删除学生 * */ public void removeStudent(Student student) { students.remove(student); } /** 使用学生的id进行查找 * */ public Student findStudent(int id) { for (Student s : students) { if (s.getId() == id) { return s; } } return null; } /** 使用学生的名字查找进行查找 * */ public List<Student> findStudents(String name) { List<Student> found = new ArrayList<Student>(); for (Student s : students) { if (s.getName().equals(name)) { found.add(s); } } return found; } /** 判断学生是否已经存在 * */ public boolean hasStudent(Student s) { return students.contains(s); } /** 返回学生列表的视图，不可修改 * */ public Set<Student> getStudents() { return Collections.unmodifiableSet(students); } /** 把学生信息保存到文件 * */ public void saveStudents() { ObjectOutputStream oos = null; try { oos = new ObjectOutputStream(new FileOutputStream(fileName)); oos.writeObject(students); } catch (Exception e) { e.printStackTrace(); throw new RuntimeException("保存失败"); } finally { if (oos != null) { try { oos.close(); } catch (Exception e2) { } } } } /** 从文件读取学生信息 * */ public void readStudents() { ObjectInputStream ois = null; try { ois = new ObjectInputStream(new FileInputStream(fileName)); Set<Student> readObject2 = (Set<Student>) ois.readObject(); Set<Student> readObject = readObject2; students = readObject; } catch (Exception e) { e.printStackTrace(); throw new RuntimeException("读取失败"); } finally { if (ois != null) { try { ois.close(); } catch (Exception e2) { } } } }}/** 学生类，可以序列化保存到文件 * */class Student implements Serializable { private static final long serialVersionUID = 1L; private int id; private int age; private String name; public Student() { } public Student(int id, String name, int age) { this.id = id; this.age = age; this.name = name; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getId() { return id; } public void setId(int id) { this.id = id; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } // Info format: id|name|age public static Student buildStudent(String studentInfo) { if (!studentInfo.matches("\\d+\\|\\w+\\|\\d+")) { throw new RuntimeException( "The student information's format should be \"id|name|age\" without quote"); } String[] infos = studentInfo.split("\\|"); int id = Integer.parseInt(infos[0]); String name = infos[1].trim(); int age = Integer.parseInt(infos[2]); return new Student(id, name, age); } @Override public int hashCode() { return id; } @Override public boolean equals(Object obj) { if (obj == null || obj.getClass() != this.getClass()) { return false; } Student other = (Student) obj; if (other.id == this.id) { return true; } return false; } @Override public String toString() { return String.format("ID:%d, Name:%s, Age:%d", id, name, age); }}// 使用TreeSet时需要的比较器class StudentComparator implements Comparator<Student>, Serializable { private static final long serialVersionUID = 1L; public int compare(Student s1, Student s2) { return s1.getId() - s2.getId(); }}
[解决办法]
网站太多了，都没啥意思了，我当时毕业每个人都是什么什么系统。你可以换个思路哇。做个电梯的系统，这个很不错哦。加油
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