首页 > 代码库 > JAVA课程结课实验代码(河北省重大技术需求征集系统设计)
JAVA课程结课实验代码(河北省重大技术需求征集系统设计)
第一部分:账号密码类
package IOP; /** * 数1401班 * 20143253 * 吕鹏博 * 时间 2016年12月21日17:45:42 */ import java.io.BufferedReader; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.PrintWriter; import java.util.StringTokenizer; /* * 账号、密码类*/ public class Pass { private String accounts, password;// 账号密码 Pass() { this.accounts = "0"; this.password = "0"; } Pass(String a, String b) { this.accounts = a; this.password = b; } public Pass[] readAccount() { Pass[] a = new Pass[10]; try { BufferedReader in = new BufferedReader(new FileReader("user.txt")); String s1 = in.readLine(); for (int i = 0; i <= 4; i++) { String s = in.readLine(); StringTokenizer t = new StringTokenizer(s, "|"); a[i] = new Pass(t.nextToken(), t.nextToken()); } in.close(); } catch (Exception e) { e.printStackTrace(); } return a; } /* * 验证密码是否正确 */ public boolean isTrue(String a, String b) { boolean i = false;// 不正确输出0 Pass[] p = new Pass[5]; p = this.readAccount(); for (int j = 0; j <= 4; j++) { if (a.equals(p[j].accounts) && b.equals(p[j].password)) { i = true; } // 登录成功 } return i; } /* * 初始化账户文件 */ public void initializeAccount(Pass[] a) throws IOException { PrintWriter in = new PrintWriter(new FileWriter("user.txt"), true); in.println("账号" + "密码"); for (int i = 0; i <= a.length - 1; i++) { in.println(a[i].accounts + "|" + a[i].password); } in.close(); } } class LOginException extends Exception { LOginException(String s) { super(s); } }
第二部分:操作类(包括增删改查等)
package IOP; /** * 数1401班 * 20143253 * 吕鹏博 * 时间 2016年12月21日17:45:42 */ import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.io.PrintWriter; import java.util.Scanner; import java.util.StringTokenizer; class Information { private String infornumber; private String inforname; private String infocontent; private int inforyear; private double infosum; private int infostate; public Information()// 定义默认信息 { infornumber = "000"; inforname = "noname"; infocontent = "noone"; infosum = 0; inforyear = 2016; infostate = 0; } public Information(String a, String b, String c, double d, int e)// 实例化方法 { infornumber = a; inforname = b; infocontent = c; infosum = d; inforyear = e; infostate = 0; } public void setinfornumber(String x) { infornumber = x; } public String getinfornumber() { return infornumber; } public void setinfornam(String Y) { inforname = Y; } public String getinforname() { return inforname; } public void setinfocontent(String z) { infocontent = z; } public String getinfocontent() { return infocontent; } public void setinfosum(double s) { infosum = s; } public double getinfosum() { return infosum; } public void setinfoyear(int s) { inforyear = s; } public int getinfoyear() { return inforyear; } public void setinfostate(int s) { infostate = s; } public double getinfostate() { return infostate; } public String tostring() { return "编号" + this.infornumber + "名称" + this.inforname + "内容" + this.infocontent + "投资金额" + this.infosum + "需求年份" + this.inforyear + "需求状态" + this.infostate; } public void readData(BufferedReader in) throws IOException {// 把一条记录从输出流中读出 String s = in.readLine(); StringTokenizer t = new StringTokenizer(s, "|"); infornumber = t.nextToken(); inforname = t.nextToken(); infocontent = t.nextToken(); infosum = Double.parseDouble(t.nextToken()); inforyear = Integer.parseInt(t.nextToken()); infostate = Integer.parseInt(t.nextToken()); } public void writeData(PrintWriter out) throws IOException {// 把一条记录写入输入流中 out.println( infornumber + "|" + inforname + "|" + infocontent + "|" + infosum + "|" + inforyear + "|" + infostate); } } @SuppressWarnings("serial") class InputException extends Exception { InputException(String s){ super(s);} } public class InformationManage { static void writeall(Information[] tm) {// 把数组从文件中读出,以后只对数组进行操作 try { PrintWriter out = new PrintWriter(new FileWriter("TechInformation.txt")); writeData(tm, out); out.close(); } catch (IOException e) { System.out.print(e); } } static void writeData(Information[] tm2, PrintWriter out) throws IOException {// 把数组存入写入流 out.println(tm2.length); for (Information e : tm2) { e.writeData(out); } } static Information[] readData(BufferedReader in) throws IOException {// 从输出流中读取数组 int n = Integer.parseInt(in.readLine()); Information[] employees = new Information[n]; for (int i = 0; i < n; i++) { employees[i] = new Information(); employees[i].readData(in); } return employees; } @SuppressWarnings("finally") public static Information[] getArray() throws FileNotFoundException {// 从文件中直接取出数组,然后被每个函数调用,进行操作 BufferedReader in = null; Information[] newstaff = null; try { in = new BufferedReader(new FileReader("TechInformation.txt")); newstaff = readData(in); in.close(); } catch (IOException e) { System.out.println(e); } finally { return newstaff; } } public static void showInformation() {//显示所有的信息 BufferedReader in; try { in = new BufferedReader(new FileReader("TechInformation.txt")); Information[] newstaff = null; try { newstaff = readData(in); in.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } for (int i = 0; i < newstaff.length; i++) if (!newstaff[i].getinfornumber().equals("000")) System.out.println(newstaff[i].tostring()); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } } static String addop(int i) {//累加编号,为增添信息的方法做铺垫 String io = ""; if (i / 10 == 0) { io = "00" + String.valueOf(i); } else if (i / 100 == 0 && i % 10 != 0) { io = "0" + String.valueOf(i); } else if (i / 1000 == 0 && i % 100 != 0) { io = String.valueOf(i); } return io; } @SuppressWarnings("resource") public static void addInformation() {//增加信息 String str1 = null; String str2 = null; String str3 = null; String str4 = null; Information stu; double i1 = 0; int count1 = 0; boolean se = true; int i2 = 0; Scanner input0; System.out.println("请输入项目名称:(如:雄鹰计划)\n"); input0 = new Scanner(System.in); str1 = input0.nextLine(); System.out.println("请输入项目内容:(如:xiaoming)\n"); input0 = new Scanner(System.in); str2 = input0.nextLine(); System.out.println("请输入项目金额:(如:200.0)\n"); input0 = new Scanner(System.in); str3 = input0.nextLine(); i1 = Double.parseDouble(str3); System.out.println("请输入项目年限:(如:2016)\n"); while (se) { Scanner input3 = new Scanner(System.in); str4 = input3.nextLine(); i2 = Integer.parseInt(str4); if (i2 > 2016) { System.out.println("请重新输入项目年限:(如:2016)\n"); se = true; try { throw new InputException("超过实际年限\n"); } catch (InputException e) { // TODO Auto-generated catch block e.printStackTrace(); } } else { se = false; } System.out.println("请输入项目年限:(如:2016)\n"); } Information[] newstaff1 = null; try { newstaff1 = getArray(); for (int i = 0; i < newstaff1.length; i++) { if (newstaff1[i].getinforname().equals(str1)) { System.out.println("该项目已存在,请重新添加。"); break; } else if (newstaff1[i].getinforname().equals("noname")) { count1 = i; stu = new Information(addop(i), str1, str2, i1, i2); newstaff1[count1] = stu; System.out.println("存储成功。"); break; } } } catch (FileNotFoundException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } writeall(newstaff1); } public static void deleteInformation() {//删除的方法(可通过项目编号和项目名称分别选择) String key = null; System.out.println("[1]=项目编号\n[2]=项目名称"); @SuppressWarnings("resource") Scanner br = new Scanner(System.in); key = br.nextLine(); int s = Integer.parseInt(key); if (s == 1) { br = new Scanner(System.in); System.out.print("请输入项目编号:"); key = br.nextLine(); } else { br = new Scanner(System.in); System.out.print("请输入项目名称:"); key = br.nextLine(); } int count = 0; Information[] newstaff = null; try { newstaff = getArray(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } for (int i = 0; i < newstaff.length; i++) { if (newstaff[i].getinfornumber().equals(key) || newstaff[i].getinforname().equals(key)) { newstaff[i] = new Information(); System.out.println("删除成功。"); break; } count++; } if (count == newstaff.length) { System.out.println("您所需要删除的信息不存在!"); } writeall(newstaff); } @SuppressWarnings("resource") public static void examInformation()// 审核的方法 { String key = null; Information[] newstaff = null; try { newstaff = getArray(); } catch (FileNotFoundException e) { e.printStackTrace(); } System.out.println("目前所拥有的未审核项目的编号和名称如下所示:"); for(int i=0;i<newstaff.length;i++){ if(newstaff[i].getinfostate()==0&&(!newstaff[i].getinfornumber().equals("000"))&&(!newstaff[i].getinforname().equals("noname"))){ System.out.println("项目编号:"+newstaff[i].getinfornumber()+" 项目名称:"+newstaff[i].getinforname());}} System.out.println("\n请输入你的选择(如(1或2))\n[1]=项目编号\n[2]=项目名称\n"); Scanner br = new Scanner(System.in); key = br.nextLine(); int s = Integer.parseInt(key); Scanner br1; if (s == 1) { br1 = new Scanner(System.in); System.out.print("请输入项目编号:\n"); key = br1.nextLine(); } else { br1 = new Scanner(System.in); System.out.print("请输入项目名称:\n"); key = br1.nextLine(); } int count = 0; int special = 0; for (int i = 0; i < newstaff.length; i++) { if (newstaff[i].getinfornumber().equals(key) || newstaff[i].getinforname().equals(key)) { special = i; break; } count++; } if (count == newstaff.length) { System.out.println("您所要审阅的信息不存在!"); } if (newstaff[special].getinfostate() == 0) { String mes = "****************\n" + "审核技术需求信息" + "\n****************\n" + "1、返回主界面" + "\n2、通过审核" + "\n3、退回审核\n"; System.out.print(mes); Scanner sq = new Scanner(System.in); int cho = sq.nextInt(); switch (cho) { case 1: break; case 2: newstaff[special].setinfostate(1); break; case 3: newstaff[special].setinfostate(2); break; } } else if (newstaff[special].getinfostate() == 1) { System.out.println("已通过审核"); } else if (newstaff[special].getinfostate() == 2) { System.out.println("该信息已被退回"); } System.out.println("审核完毕,返回上一层界面。"); writeall(newstaff); } @SuppressWarnings("resource") public void selectInformation() {//查询方法:(只能用项目名称查询) Information[] a = null; try { a = getArray(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out.print("请输入要查询的项目名称\n"); Scanner s = new Scanner(System.in); String name = s.nextLine(); int uo = 0; for (int value = http://www.mamicode.com/0; value < a.length; value++) { if (a[value].getinforname().equals(name)) { uo = value; } } System.out.print(a[uo].tostring() + "\n"); } public void countStudent() {//统计方法 Information[] a = null; try { a = getArray(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } int o = 0, b = 0, c = 0; for (int i = 0; i < a.length; i++) { if (!a[i].getinforname().equals("noname")) { if (a[i].getinfostate() == 0) { o++; } else if (a[i].getinfostate() == 1) { b++; } else if (a[i].getinfostate() == 2) { c++; } } } System.out.print("未审核的需求信息" + o + "\n通过审核的需求信息" + b + "\n未通过审核的需求信息" + c + "\n"); } }
第三部分:主类(在主函数中实现,包括界面等)
package IOP; /** * 数1401班 * 20143253 * 吕鹏博 * 时间 2016年12月21日17:45:42 */ import java.io.FileNotFoundException; import java.io.IOException; import java.util.Scanner; public class WINDOWSHOW { public static void main(String[] args) throws FileNotFoundException { Pass[] a = new Pass[5]; a[0] = new Pass("0", "0"); a[1] = new Pass("1", "1"); a[2] = new Pass("2", "2"); a[3] = new Pass("3", "3"); a[4] = new Pass("4", "4"); try { a[0].initializeAccount(a); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } Information[] a1 = new Information[20]; a1[0] = new Information("001", "a", "1231", 18, 2016); a1[1] = new Information("002", "b", "1231", 18, 2016); a1[2] = new Information("003", "c", "1231", 18, 2016); a1[3] = new Information("004", "d", "1231", 18, 2016); a1[4] = new Information("005", "e", "1231", 18, 2016); for (int i = 5; i < a1.length; i++) { a1[i] = new Information(); } InformationManage sq = new InformationManage(); sq.writeall(a1); try { if (LOgin(a[0])) { operation(sq); } } catch (LOginException e) { // TODO Auto-generated catch block e.printStackTrace(); } System.exit(0); } static void operation(InformationManage sq) {// 把操作过程集成在此方法中. show(); @SuppressWarnings("resource") Scanner in = new Scanner(System.in); int choice = in.nextInt(); while (choice != 7) { switch (choice) { case 1: sq.addInformation(); break; case 2: sq.deleteInformation(); break; case 3: sq.examInformation(); break; case 4: sq.showInformation(); break; case 5: sq.selectInformation(); ; break; case 6: sq.countStudent(); break; } show(); in = new Scanner(System.in); choice = in.nextInt(); } if (choice == 7) { System.out.println("结束"); } } /* * 登录界面,输入账号密码。传入一个Pass实例化的类,用来调用类中的isTrue方法 返回一个整型参数i,1表示高级权限,2表示低级权限 */ static boolean LOgin(Pass a) throws LOginException {// 登录系统时的方法 int j = 1; boolean flag = false; while (j <= 3) { System.out.println("***********************************************"); Scanner in = new Scanner(System.in); System.out.println("请输入账号"); String account = in.nextLine(); System.out.println("请输入密码"); String password = in.nextLine(); if (!a.isTrue(account, password)) { System.out.println("密码错误,请重新输入!您还有" + (3 - j) + "次机会!"); } else { flag = true; break; } j++; } if (j >= 3) throw new LOginException("输入密码错误三次!机器锁定!"); return flag; } public static void show() {// 界面展示,每次只用调用即可,不用每次都写 String s = ""; s = "*****************************************\n"; s = s + " 河北省重大技术征集系统 \n"; s = s + "****************************************\n"; s = s + " 1、录入技术需求信息\n"; s = s + " 2、删除技术需求信息\n"; s = s + " 3、审核技术需求信息\n"; s = s + " 4、显示技术需求信息\n"; s = s + " 5、查询技术需求信息\n"; s = s + " 6、统计技术需求信息\n"; s = s + " 7、退出系统\n"; System.out.print(s); } }
JAVA课程结课实验代码(河北省重大技术需求征集系统设计)
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