java学生管理系统，带服务器（本地），写入到本地文件。

package com.bwf.aClient; import java.io.IOException; import java.io.ObjectOutputStream; import java.util.Scanner; import com.bwf.bean.Request; import com.bwf.bean.Response; public class ClientFunction { private Scanner sc = null; private ObjectOutputStream oos; public void setOos(ObjectOutputStream oos) { this.oos = oos; } public ClientFunction(Scanner sc){ this.sc = sc; } /**登录身份选择界面*/ public void startMenu() throws IOException{ System.out.println(" 1-管理员登录 ,2-学生登录,0-退出"); int chose = sc.nextInt(); switch (chose) { case 0: cancle(); break; case 1: login(); break; case 2: sLogin(); break; default: startMenu(); break; } } /**退出*/ public void cancle(){ Request request = new Request(Request.TYPE_CANCLE); try { oos.writeObject(request); oos.flush(); } catch (IOException e) { e.printStackTrace(); } } /**注销*/ public void exit(){ Request request = new Request(Request.TYPE_EXIT); try { oos.writeObject(request); oos.flush(); } catch (IOException e) { e.printStackTrace(); } } public void exitResult(Response response) throws IOException{ System.out.println(response.getContent()); if(response.getContent().equals("注销成功！")){ startMenu(); } } /**管理员登录界面*/ public void login() throws IOException{ System.out.println("请输入管理员账号："); String aID = sc.next(); System.out.println("请输入管理员密码:"); String aPwd = sc.next(); // 包装成对象 Request request = new Request(Request.TYPE_ALOGIN); request.setaId(aID); request.setaPassword(aPwd); // 发送给服务器 oos.writeObject(request); oos.flush(); } /** 打印管理员登录的结果*/ public void loginResult(Response response) throws IOException{ System.out.println(response.getContent()); if(response.getContent().equals("登录成功！")){ adminMenu(); }else{ startMenu(); } } /**学生登录界面*/ public void sLogin() throws IOException{ System.out.println("请输入学生账号："); String sId = sc.next(); System.out.println("请输入学生密码:"); String sPwd = sc.next(); // 包装成对象 Request request = new Request(Request.TYPE_SLOGIN); request.setsId(sId); request.setsPassword(sPwd); // 发送给服务器 oos.writeObject(request); oos.flush(); } /** 打印学生登录的结果*/ public void sLoginResult(Response response) throws IOException{ System.out.println(response.getContent()); if(response.getContent().equals("登录成功！")){ studentMenu(); }else{ startMenu(); } } /**管理员操作界面*/ public void adminMenu() throws IOException{ System.out.println("1-添加学生,2-查询学生,3-修改密码,4-修改班级,5-修改成绩,0-注销"); int chose = sc.nextInt(); switch (chose) { case 0: exit(); break; case 1: add(); break; case 2: look(); break; case 3: modifyPassword(); break; case 4: modifyClass(); break; case 5: modifyScore(); break; default: adminMenu(); break; } } /**学生操作界面*/ public void studentMenu() throws IOException{ System.out.println("1-查询信息,2-修改密码,0-注销"); int chose = sc.nextInt(); switch (chose) { case 0: exit(); break; case 1: studentLook(); break; case 2: rePassword(); break; default: studentMenu(); break; } } /**管理员请求添加*/ private void add() throws IOException{ System.out.println("请输入学号"); String sId = sc.next(); System.out.println("请输入密码"); String sPassword = sc.next(); System.out.println("请输入班级"); String sClass = sc.next(); System.out.println("请输入成绩"); Double sScore = sc.nextDouble(); //包装 Request request = new Request(Request.TYPE_ADD); request.setsId(sId); request.setsPassword(sPassword); request.setsClass(sClass); request.setsScore(sScore); //发送给服务器 oos.writeObject(request); oos.flush(); } /** 打印添加的结果*/ public void addResult(Response response) throws IOException{ System.out.println(response.getContent()); adminMenu(); } /**管理员查看学生信息*/ public void look(){ Request request = new Request(Request.TYPE_LOOK); try { oos.writeObject(request); oos.flush(); } catch (IOException e) { e.printStackTrace(); } } /**打印查看结果 */ public void lookResult(Response response) throws IOException{ System.out.println(response.getContent()); adminMenu(); } /**请求修改密码*/ private void modifyPassword() { System.out.println("请输入要修改的学号"); String sId = sc.next(); System.out.println("请输入修改密码"); String sPassword = sc.next(); /**包装*/ Request request = new Request(Request.TYPE_MODIFYPS); request.setsId(sId); request.setsPassword(sPassword); /**发送给服务器*/ try { oos.writeObject(request); oos.flush(); } catch (IOException e) { e.printStackTrace(); } } /** 打印修改的结果*/ public void modifyPasswordResult(Response response) throws IOException{ System.out.println(response.getContent()); adminMenu(); } /**请求修改班级*/ private void modifyClass() throws IOException{ System.out.println("请输入要修改的学号"); String sId = sc.next(); System.out.println("请输入修改班级"); String sClass = sc.next(); /**包装*/ Request request = new Request(Request.TYPE_MODIFYCLASS); request.setsId(sId); request.setsClass(sClass); //发送给服务器 oos.writeObject(request); oos.flush(); } /** 打印添加的结果*/ public void modifyClassResult(Response response) throws IOException{ System.out.println(response.getContent()); adminMenu(); } /**请求修改成绩*/ private void modifyScore() throws IOException{ System.out.println("请输入要修改的学号"); String sId = sc.next(); System.out.println("请输入修改成绩"); Double sScore = sc.nextDouble(); //包装请求 Request request = new Request(Request.TYPE_MODIFYSCORE); request.setsId(sId); request.setsScore(sScore); //发送给服务器 oos.writeObject(request); oos.flush(); } /** 打印添加的结果*/ public void modifyScoreResult(Response response) throws IOException{ System.out.println(response.getContent()); adminMenu(); } /**学生查看学生信息*/ public void studentLook(){ Request request = new Request(Request.TYPE_SLOOK); try { //发送给服务器 oos.writeObject(request); oos.flush(); } catch (IOException e) { e.printStackTrace(); } } /**打印学生查看结果 */ public void studentLookResult(Response response) throws IOException{ System.out.println(response.getContent()); studentMenu(); } /**学生请求修改密码*/ private void rePassword() { System.out.println("请输入原始密码"); String sId = sc.next(); System.out.println("请输入修改密码"); String sPassword = sc.next(); /**包装*/ Request request = new Request(Request.TYPE_REPS); request.setsId(sId); request.setsPassword(sPassword); /**发送给服务器*/ try { oos.writeObject(request); oos.flush(); } catch (IOException e) { e.printStackTrace(); } } /** 打印学生修改的结果*/ public void rePasswordResult(Response response) throws IOException{ System.out.println(response.getContent()); studentMenu(); } }