Java 实战项目锤炼之网上图书馆管理系统的实现流程

一、项目简述

功能： 区分为管理员用户和普通用户，普通用户：用户登录，个 人信息修改，图书查询，用户借阅，用户归还，管理员用 户：图书馆里，归还管理，借阅信息查询，图书维护，分 类管理，读者管理等等功能。

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 + servlert + html+ css + javascript + jquery + ajax等等。

用户登陆模块代码:

用户登陆模块:
 
@controller
public class logincontroller {
 
    private loginservice loginservice;
 
 
    @autowired
    public void setloginservice(loginservice loginservice) {
        this.loginservice = loginservice;
    }
 
 
    @requestmapping(value = {"/", "/login.html"})
    public string tologin(httpservletrequest request) {
        request.getsession().invalidate();
        return "index";
    }
 
    @requestmapping("/logout.html")
    public string logout(httpservletrequest request) {
        request.getsession().invalidate();
        return "redirect:/login.html";
    }
 
 
    //负责处理logincheck.html请求
    //请求参数会根据参数名称默认契约自动绑定到相应方法的入参中
    @requestmapping(value = "/api/logincheck", method = requestmethod.post)
    public @responsebody
    object logincheck(httpservletrequest request) {
        long id = long.parselong(request.getparameter("id"));
        string passwd = request.getparameter("passwd");
        boolean isreader = loginservice.hasmatchreader(id, passwd);
        boolean isadmin = loginservice.hasmatchadmin(id, passwd);
        hashmap<string, string> res = new hashmap<>();
        if (isadmin) {
            admin admin = new admin();
            admin.setadminid(id);
            admin.setpassword(passwd);
            string username = loginservice.getadminusername(id);
            admin.setusername(username);
            request.getsession().setattribute("admin", admin);
            res.put("statecode", "1");
            res.put("msg", "管理员登陆成功！");
        } else if (isreader) {
            readercard readercard = loginservice.findreadercardbyreaderid(id);
            request.getsession().setattribute("readercard", readercard);
            res.put("statecode", "2");
            res.put("msg", "读者登陆成功！");
        } else {
            res.put("statecode", "0");
            res.put("msg", "账号或密码错误！");
        }
        return res;
    }
 
    @requestmapping("/admin_main.html")
    public modelandview toadminmain(httpservletresponse response) {
        return new modelandview("admin_main");
    }
 
    @requestmapping("/reader_main.html")
    public modelandview toreadermain(httpservletresponse response) {
        return new modelandview("reader_main");
    }
 
    @requestmapping("/admin_repasswd.html")
    public modelandview readminpasswd() {
        return new modelandview("admin_repasswd");
    }
 
    @requestmapping("/admin_repasswd_do")
    public string readminpasswddo(httpservletrequest request, string oldpasswd, string newpasswd, string renewpasswd, redirectattributes redirectattributes) {
        admin admin = (admin) request.getsession().getattribute("admin");
        long id = admin.getadminid();
        string password = loginservice.getadminpassword(id);
        if (password.equals(oldpasswd)) {
            if (loginservice.adminrepassword(id, newpasswd)) {
                redirectattributes.addflashattribute("succ", "密码修改成功！");
                return "redirect:/admin_repasswd.html";
            } else {
                redirectattributes.addflashattribute("error", "密码修改失败！");
                return "redirect:/admin_repasswd.html";
            }
        } else {
            redirectattributes.addflashattribute("error", "旧密码错误！");
            return "redirect:/admin_repasswd.html";
        }
    }
 
    @requestmapping("/reader_repasswd.html")
    public modelandview rereaderpasswd() {
        return new modelandview("reader_repasswd");
    }
 
    @requestmapping("/reader_repasswd_do")
    public string rereaderpasswddo(httpservletrequest request, string oldpasswd, string newpasswd, string renewpasswd, redirectattributes redirectattributes) {
        readercard reader = (readercard) request.getsession().getattribute("readercard");
        long id = reader.getreaderid();
        string password = loginservice.getreaderpassword(id);
        if (password.equals(oldpasswd)) {
            if (loginservice.readerrepassword(id, newpasswd)) {
                redirectattributes.addflashattribute("succ", "密码修改成功！");
                return "redirect:/reader_repasswd.html";
            } else {
                redirectattributes.addflashattribute("error", "密码修改失败！");
                return "redirect:/reader_repasswd.html";
            }
        } else {
            redirectattributes.addflashattribute("error", "旧密码错误！");
            return "redirect:/reader_repasswd.html";
        }
    }
 
    //配置404页面
    @requestmapping("*")
    public string notfind() {
        return "404";
    }
 
}

静态资源和拦截器配置代码:

静态资源和拦截器配置:
 
@configuration
@enablewebmvc
@componentscan("com.library.controller")
public class webconfig extends webmvcconfigureradapter {
 
    @bean
    public viewresolver viewresolver() {
        internalresourceviewresolver resolver = new internalresourceviewresolver();
        resolver.setsuffix(".jsp");
        return resolver;
    }
 
    @override
    public void configuredefaultservlethandling(defaultservlethandlerconfigurer configurer) {
        configurer.enable();
    }
 
    @override
    public void addresourcehandlers(resourcehandlerregistry registry) {
        registry.addresourcehandler("/img/**")
                .addresourcelocations("/static/img/");
        registry.addresourcehandler("/js/**").addresourcelocations("/static/js/");
        registry.addresourcehandler("/css/**").addresourcelocations("/static/css/");
    }
}

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