一、项目简述（+需求文档+ppt）
功能：卡管理，卡消费，卡充值，图书借阅，消费，记录，注销等等功能。
二、项目运行
环境配置：
jdk1.8 + tomcat8.5 + mysql + eclispe（intellij idea,eclispe,myeclispe,sts都支持）
项目技术：
jsp + servlet + html+ css + javascript + jquery + ajax 等等
用户管理操作控制层:
/**
* 用户管理操作
*/
@controller
@requestmapping("/user")
public class usercontroller {
@autowired
private userservice userservice;
/**
* 用户添加页面
* @return
*/
@getmapping("/add")
public string create() {
return "user/add";
}
/**
* 用户添加操作
* @param user
* @return
*/
@postmapping("/add")
@responsebody
public map<string, object> add(@requestbody user user) {
if(stringutils.isempty(user.getusername())){
return mapcontrol.getinstance().error("请填写用户名").getmap();
}
if(stringutils.isempty(user.getname())){
return mapcontrol.getinstance().error("请填写名称").getmap();
}
if(stringutils.isempty(user.getuserpwd())){
return mapcontrol.getinstance().error("请填写密码").getmap();
}
int result = userservice.create(user);
if (result <= 0) {
return mapcontrol.getinstance().error().getmap();
}
return mapcontrol.getinstance().success().getmap();
}
/**
* 根据id删除
* @param id
* @return
*/
@postmapping("/delete/{id}")
@responsebody
public map<string, object> delete(@pathvariable("id") integer id) {
int result = userservice.delete(id);
if (result <= 0) {
return mapcontrol.getinstance().error().getmap();
}
return mapcontrol.getinstance().success().getmap();
}
//批量删除
@postmapping("/delete")
@responsebody
public map<string, object> delete(string ids) {
int result = userservice.delete(ids);
if (result <= 0) {
return mapcontrol.getinstance().error().getmap();
}
return mapcontrol.getinstance().success().getmap();
}
/**
* 编辑用户信息操作
* @param user
* @return
*/
@postmapping("/edit")
@responsebody
public map<string, object> edit(@requestbody user user) {
if(stringutils.isempty(user.getusername())){
return mapcontrol.getinstance().error("请填写用户名").getmap();
}
if(stringutils.isempty(user.getname())){
return mapcontrol.getinstance().error("请填写名称").getmap();
}
if(stringutils.isempty(user.getuserpwd())){
return mapcontrol.getinstance().error("请填写密码").getmap();
}
int result = userservice.update(user);
if (result <= 0) {
return mapcontrol.getinstance().error().getmap();
}
return mapcontrol.getinstance().success().getmap();
}
/**
* 根据id查询，跳转修改页面
* @param id
* @param modelmap
* @return
*/
@getmapping("/edit/{id}")
public string edit(@pathvariable("id") integer id, modelmap modelmap) {
user user = userservice.detail(id);
modelmap.addattribute("user", user);
return "user/edit";
}
//查询所有
@postmapping("/query")
@responsebody
public map<string, object> query(@requestbody user user) {
list<user> list = userservice.query(user);
integer count = userservice.count(user);
return mapcontrol.getinstance().success().page(list, count).getmap();
}
//跳转列表页面
@getmapping("/list")
public string list() {
return "user/list";
}
}
登录控制层：
@controller
public class logincontroller {
@autowired
private userservice userservice;
@autowired
private teacherservice teacherservice;
@autowired
private studentservice studentservice;
//跳转登录页面
@getmapping("/login")
public string login() {
return "login";
}
//登录操作
@postmapping("/login")
@responsebody
public map<string, object> login(string username, string password, string captcha, string type, httpsession session) {
//判断用户名、密码、用户类型、验证码是否为空
if (stringutils.isempty(username) || stringutils.isempty(password) || stringutils.isempty(captcha) || stringutils.isempty(type)) {
return mapcontrol.getinstance().error("用户名或密码不能为空").getmap();
}
//获取系统生成的验证码
string _captcha = (string) session.getattribute("captcha");
//先判断验证码是否正确
if (!(captcha.tolowercase()).equals(_captcha.tolowercase())) {
//验证码错误
return mapcontrol.getinstance().error("验证码错误").getmap();
}
//判断用户类型
if ("1".equals(type)) { //管理员验证登录
user user = userservice.login(username, md5utils.getmd5(password)); //对密码进行加密处理，因为数据库中存储的是加密后的密码
if (user != null) {
session.setattribute("user", user);
session.setattribute("type", 1);
return mapcontrol.getinstance().success().add("data", user).getmap();
} else {
return mapcontrol.getinstance().error("用户名或密码错误").getmap();
}
}
if ("2".equals(type)) { //老师验证登录
teacher teacher = teacherservice.login(username, md5utils.getmd5(password));
if (teacher != null) {
session.setattribute("user", teacher);
session.setattribute("type", "2");
return mapcontrol.getinstance().success().add("data", teacher).getmap();
} else {
return mapcontrol.getinstance().error("用户名或密码错误").getmap();
}
}
if ("3".equals(type)) { //学生验证登录
student student = studentservice.login(username, md5utils.getmd5(password));
if (student != null) {
session.setattribute("user", student);
session.setattribute("type", "3");
return mapcontrol.getinstance().success().add("data", student).getmap();
} else {
return mapcontrol.getinstance().error("用户名或密码错误").getmap();
}
}
return mapcontrol.getinstance().getmap();
}
}
生成验证码：
@controller
@requestmapping("/captcha")
public class captchacontroller {
private char[] codesequence = {'a', '1', 'b', 'c', '2', 'd', '3', 'e', '4', 'f', '5', 'g', '6', 'h', '7', 'i', '8', 'j',
'k', '9', 'l', '1', 'm', '2', 'n', 'p', '3', 'q', '4', 'r', 's', 't', 'u', 'v', 'w',
'x', 'y', 'z'};
@requestmapping("/code")
public void getcode(httpservletresponse response, httpsession session) throws ioexception {
int width = 80;
int height = 37;
random random = new random();
//设置response头信息
//禁止缓存
response.setheader("pragma", "no-cache");
response.setheader("cache-control", "no-cache");
response.setdateheader("expires", 0);
//生成缓冲区image类
bufferedimage image = new bufferedimage(width, height, 1);
//产生image类的graphics用于绘制操作
graphics g = image.getgraphics();
//graphics类的样式
g.setcolor(this.getcolor(200, 250));
g.setfont(new font("times new roman", 0, 28));
g.fillrect(0, 0, width, height);
//绘制干扰线
for (int i = 0; i < 40; i++) {
g.setcolor(this.getcolor(130, 200));
int x = random.nextint(width);
int y = random.nextint(height);
int x1 = random.nextint(12);
int y1 = random.nextint(12);
g.drawline(x, y, x + x1, y + y1);
}
//绘制字符
string strcode = "";
for (int i = 0; i < 4; i++) {
string rand = string.valueof(codesequence[random.nextint(codesequence.length)]);
strcode = strcode + rand;
g.setcolor(new color(20 + random.nextint(110), 20 + random.nextint(110), 20 + random.nextint(110)));
g.drawstring(rand, 13 * i + 6, 28);
}
//将字符保存到session中用于前端的验证
session.setattribute("captcha", strcode.tolowercase());
g.dispose();
imageio.write(image, "jpeg", response.getoutputstream());
response.getoutputstream().flush();
}
public color getcolor(int fc, int bc) {
random random = new random();
if (fc > 255)
fc = 255;
if (bc > 255)
bc = 255;
int r = fc + random.nextint(bc - fc);
int g = fc + random.nextint(bc - fc);
int b = fc + random.nextint(bc - fc);
return new color(r, g, b);
}
}
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