Java实战在线选课系统的实现流程

一、项目简述

功能： 系统分为三个角色。最高权限管理员，学生，教师，包括 学生管理，教师管理，课程管理，选课，退课，成绩查 询。，教学课程，查看选课名单等等功能完全齐备。

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 +spring + springmvc + mybatis + bootstrap4+ css + javascript + jquery + ajax + particles.js+ maven等等。

用户管理控制器:

/**
 * 用户管理控制器
 */
@requestmapping("/user/")
@controller
public class usercontroller {
    @autowired
    private iuserservice userservice;
    @autowired
    private iroleservice roleservice;
 
    @resource
    private processengineconfiguration configuration;
    @resource
    private processengine engine;
 
    @getmapping("/index")
    @apioperation("跳转用户页接口")
    @preauthorize("hasrole('管理员')")
    public string index(string menuid,model model){
        list<role> roles = queryallrole();
        model.addattribute("roles",roles);
        model.addattribute("menuid",menuid);
        //用户首页
        return "views/user/user_list";
    }
 
    @getmapping("/listpage")
    @apioperation("查询用户分页数据接口")
    @apiimplicitparams({
            @apiimplicitparam(name = "userquery", value = "用户查询对象", defaultvalue = "userquery对象")
    })
    @responsebody
    @preauthorize("hasrole('管理员')")
    public pagelist listpage(userquery userquery){
        return  userservice.listpage(userquery);
    }
 
    //添加用户
    @postmapping("/adduser")
    @apioperation("添加用户接口")
    @responsebody
    public map<string,object> adduser(user user){
        map<string, object> ret = new hashmap<>();
        ret.put("code",-1);
        if(stringutils.isempty(user.getusername())){
            ret.put("msg","请填写用户名");
            return ret;
        }
        if(stringutils.isempty(user.getpassword())){
            ret.put("msg","请填写密码");
            return ret;
        }
        if(stringutils.isempty(user.getemail())){
            ret.put("msg","请填写邮箱");
            return ret;
        }
        if(stringutils.isempty(user.gettel())){
            ret.put("msg","请填写手机号");
            return ret;
        }
        if(stringutils.isempty(user.getheadimg())){
            ret.put("msg","请上传头像");
            return ret;
        }
        if(userservice.adduser(user)<=0) {
            ret.put("msg", "添加用户失败");
            return ret;
        }
        ret.put("code",0);
        ret.put("msg","添加用户成功");
        return ret;
    }
 
    /**
     * 修改用户信息操作
     * @param user
     * @return
     */
    @postmapping("/editsaveuser")
    @apioperation("修改用户接口")
    @preauthorize("hasrole('管理员')")
    @responsebody
    public message editsaveuser(user user){
        if(stringutils.isempty(user.getusername())){
          return message.error("请填写用户名");
        }
        if(stringutils.isempty(user.getemail())){
            return message.error("请填写邮箱");
        }
        if(stringutils.isempty(user.gettel())){
            return message.error("请填写手机号");
        }
        try {
            userservice.editsaveuser(user);
            return message.success();
        } catch (exception e) {
            e.printstacktrace();
            return message.error("修改用户信息失败");
        }
 
    }
 
    //添加用户
    @getmapping("/deleteuser")
    @apioperation("删除用户接口")
    @apiimplicitparams({
            @apiimplicitparam(name = "id", value = "如:88",required = true)
    })
    @preauthorize("hasrole('管理员')")
    @responsebody
    public ajaxresult deleteuser(@requestparam(required = true) long id){
        ajaxresult ajaxresult = new ajaxresult();
        try {
            userservice.deleteuser(id);
        } catch (exception e) {
            e.printstacktrace();
            return new ajaxresult("删除失败");
        }
 
        return ajaxresult;
    }
 
    @postmapping(value="/deletebatchuser")
    @apioperation("批量删除用户接口")
    @preauthorize("hasrole('管理员')")
    @responsebody
    public ajaxresult deletebatchuser(string ids){
        string[] idsarr = ids.split(",");
        list list = new arraylist();
        for(int i=0;i<idsarr.length;i++){
            list.add(idsarr[i]);
        }
        try{
            userservice.batchremove(list);
            return new ajaxresult();
        }catch(exception e){
           return new ajaxresult("批量删除失败");
        }
    }
 
    //查询所有角色
    public list<role> queryallrole(){
        return roleservice.queryall();
    }
 
    //添加用户的角色
    @postmapping("/adduserrole")
    @apioperation("添加用户角色接口")
    @apiimplicitparams({
            @apiimplicitparam(name = "parammap", value = "如:{userid:1,[1,2,3,4]]}")
    })
    @responsebody
    public ajaxresult adduserrole(@requestbody map parammap){
        ajaxresult ajaxresult = new ajaxresult();
        string userid = (string)parammap.get("userid");
        list roleids = (list) parammap.get("roleids");
        try {
            //添加用户对应的角色
            roleservice.adduserrole(userid,roleids);
            return ajaxresult;
        }catch (exception e){
            e.printstacktrace();
            return new ajaxresult("保存角色失败");
        }
 
    }
 
 
 
 
    //添加用户
    @requestmapping("/regsaveuser")
    @responsebody
    public long addteacher(user user){
        system.out.println("保存用户...."+user);
        userservice.adduser(user);
 
        //保存工作流程操作
        identityservice is = engine.getidentityservice();
        // 添加用户组
        org.activiti.engine.identity.user userinfo = userservice.saveuser(is, user.getusername());
        // 添加用户对应的组关系
        group stugroup = new groupentityimpl();
        stugroup.setid("stugroup");
        group tgroup = new groupentityimpl();
        tgroup.setid("tgroup");
        if(user.gettype() == 2) {
            //保存老师组
            userservice.saverel(is, userinfo, tgroup);
        }
        if(user.gettype() == 3) {
            //保存学生组
            userservice.saverel(is, userinfo, stugroup);
        }
 
        long userid = user.getid();
        return userid;
    }
 
    /**
     * 修改密码页面
     * @return
     */
    @requestmapping(value="/update_pwd",method=requestmethod.get)
    public string updatepwd(){
        return "views/user/update_pwd";
    }
 
    /**
     * 修改密码操作
     * @param oldpwd
     * @param newpwd
     * @return
     */
    @responsebody
    @postmapping("/update_pwd")
    public message updatepassword(@requestparam(name="oldpwd",required=true)string oldpwd,
                                  @requestparam(name="newpwd",required=true)string newpwd){
        string username = commonutils.getloginuser().getusername();
        user userbyusername = userservice.finduserbyusername(username);
        if(userbyusername!=null){
            string password = userbyusername.getpassword();
            bcryptpasswordencoder bcryptpasswordencoder = new bcryptpasswordencoder();
            boolean matches = bcryptpasswordencoder.matches(oldpwd, password);
            if(!matches){
                return message.error("旧密码不正确");//true
            }
            userbyusername.setpassword(bcryptpasswordencoder.encode(newpwd));
 
            if(userservice.edituserpassword(userbyusername)<=0){
                return message.error("密码修改失败");
            }
        }
        return message.success();
    }
 
    /**
     * 清除缓存
     * @param request
     * @param response
     * @return
     */
    @responsebody
    @postmapping("/clear_cache")
    public message clearcache(httpservletrequest request, httpservletresponse response) throws servletexception, ioexception {
        response.setheader("cache-control","no-store");
        response.setheader("pragrma","no-cache");
        response.setdateheader("expires",0);
      return  message.success();
    }
}

角色控制器：

@controller
public class rolecontroller {
 
    @autowired
    private iroleservice roleservice;
 
    @autowired
    private ipermissionservice permissionservice;
 
 
 
 
    @preauthorize("hasrole('管理员')")
    @responsebody
    @requestmapping("/role/doadd")
    public string doadd(role role){
        //角色添加
        return "ok";
    }
    //添加角色
    @requestmapping("/role/addrole")
    @preauthorize("hasrole('管理员')")
    @responsebody
    public ajaxresult addrole(role role){
        system.out.println("保存角色...."+role);
        try {
            roleservice.saverole(role);
            return new ajaxresult();
        } catch (exception e) {
            e.printstacktrace();
            return new ajaxresult("操作失败");
        }
    }
 
    @preauthorize("hasrole('管理员')")
    @requestmapping("/role/index")
    public string index(model model){
        list<permission> permisisons = permissionservice.findallpermisisons();
        model.addattribute("permissions",permisisons);
        //返回角色
        return "views/role/role_list";
    }
 
    @requestmapping("/role/listpage")
    @responsebody
    public pagelist listpage(rolequery rolequery){
        system.out.println("传递参数:"+rolequery);
        return  roleservice.listpage(rolequery);
    }
 
 
    //修改用户editsaveuser
    @requestmapping("/role/editsaverole")
    @responsebody
    public ajaxresult editsaverole(role role){
        system.out.println("修改角色...."+role);
        try {
            roleservice.editsaverole(role);
            return new ajaxresult();
        } catch (exception e) {
            e.printstacktrace();
        }
        return new ajaxresult("修改失败");
    }
 
    //添加角色
    @requestmapping("/role/deleterole")
    @responsebody
    public ajaxresult deleterole(long id){
        system.out.println("删除角色...."+id);
        ajaxresult ajaxresult = new ajaxresult();
        try {
            roleservice.deleterole(id);
        } catch (exception e) {
            e.printstacktrace();
            return new ajaxresult("删除失败");
        }
        return ajaxresult;
    }
 
    //添加角色权限 addrolepermission
    @requestmapping("/role/addrolepermission")
    @responsebody
    public ajaxresult addrolepermission(@requestbody map parammap){
        ajaxresult ajaxresult = new ajaxresult();
        string roleid = (string)parammap.get("roleid");
        list permissionids = (list) parammap.get("permissionids");
        try {
            //添加角色对应的权限
            roleservice.addrolepermission(roleid,permissionids);
            return ajaxresult;
        }catch (exception e){
            e.printstacktrace();
            return new ajaxresult("保存权限失败");
        }
 
    }
 
}

学生控制器：

@requestmapping("/student")
@controller
@api(tags = "学生管理接口")
public class studentcontroller {
 
    @autowired
    private iuserservice userservice;
 
    @autowired
    private icourseservice courseservice;
 
    @autowired
    private iclassesservice classesservice;
    @resource
    private processengine engine;
 
    @autowired
    private ioperaterlogservice operaterlogservice;
 
    //老师列表
    //后台查询学生列表
    @requestmapping("/index")
    public string index(model model){
        //用户首页
        model.addattribute("courses",courseservice.queryall());
        model.addattribute("classes",classesservice.queryall());
        return "views/student/student_list";
    }
 
    @requestmapping("/listpage")
    @responsebody
    public pagelist listpage(userquery userquery){
        userquery.settype(3l);//2表示老学生
        return  userservice.listpage(userquery);
    }
 
    /**
     * 添加学生操作
     * @param user
     * @return
     */
    @postmapping("/addsavestu")
    @apioperation("添加学生接口")
    @preauthorize("hasrole('管理员')")
    @responsebody
    public message addsavestudent(user user){
        if(stringutils.isempty(user.getusername())){
            return message.error("请填写用户名");
        }
        if(stringutils.isempty(user.getpassword())){
            return message.error("请填写密码");
        }
        if(stringutils.isempty(user.getemail())){
            return message.error("请填写邮箱");
        }
        if(stringutils.isempty(user.gettel())){
            return message.error("请填写手机号");
        }
        if(stringutils.isempty(user.getstunum())){
            return message.error("请填写学号");
        }
        user userbyusername = userservice.finduserbyusername(user.getusername());
        if(userbyusername!=null){
            return message.error("用户名已存在");
        }
        if(userservice.findbystunum(user.getstunum())!=null){
            return message.error("该学号已存在");
        }
        user.settype(3);
        if(userservice.adduser(user)<=0){
            return message.error("学生添加失败");
        }
        //保存工作流程操作
        identityservice is = engine.getidentityservice();
        // 添加用户组
        org.activiti.engine.identity.user userinfo = userservice.saveuser(is, user.getusername());
        // 添加用户对应的组关系
        group stugroup = new groupentityimpl();
        stugroup.setid("stugroup");
        userservice.saverel(is, userinfo, stugroup);
        operaterlogservice.add("添加学生成功,学生名称:"+user.getusername());
        return message.success();
    }
 
 
 
    //修改用户editsaveuser
    @postmapping("/editsavestu")
    @apioperation("修改学生接口")
    @preauthorize("hasrole('管理员')")
    @responsebody
    public message editsavestu(user user){
        if(stringutils.isempty(user.getusername())){
            return message.error("请填写用户名");
        }
        if(stringutils.isempty(user.getemail())){
            return message.error("请填写邮箱");
        }
        if(stringutils.isempty(user.gettel())){
            return message.error("请填写手机号");
        }
        user userbyusername = userservice.finduserbyusername(user.getusername());
        if(userbyusername!=null){
            if(!userbyusername.getid().equals(user.getid())){
                return message.error("该用户名已存在");
            }
        }
        try {
            userservice.editsaveuser(user);
            operaterlogservice.add("编辑学生成功,学生名称:"+user.getusername());
            return message.success();
        } catch (exception e) {
            e.printstacktrace();
            return message.error("学生编辑失败");
        }
 
    }
 
    //editsavestuxk
    @postmapping("/editsavestuxk")
    @apioperation("修改用户接口")
    @apiimplicitparams({
            @apiimplicitparam(name = "user", value = "学生选课")
    })
    @responsebody
    public ajaxresult editsavestuxk(user user){
        try {
            userservice.editsavexk(user);
            operaterlogservice.add("修改学生选课成功,学生名称:"+user.getusername());
            return new ajaxresult();
        } catch (exception e) {
            e.printstacktrace();
        }
        return new ajaxresult("修改失败");
    }
 
 
 
}

教师管理控制器：

@requestmapping("/teacher")
@controller
@api(tags = "教师管理接口")
public class teachercontroller {
 
    @autowired
    private iuserservice userservice;
 
    @autowired
    private iclassesservice classesservice;
    @resource
    private processengine engine;
    @autowired
    private ioperaterlogservice operaterlogservice;
 
 
    //老师列表
    @requestmapping("/index")
    public string index(model model){
        //用户首页
        model.addattribute("classes",classesservice.queryall());
        return "views/teacher/teacher_list";
    }
 
    @requestmapping("/listpage")
    @responsebody
    public pagelist listpage(userquery userquery){
        userquery.settype(2l);//2表示老师
        return  userservice.listpage(userquery);
    }
 
    /**
     * 添加教师操作
     * @param user
     * @return
     */
    @postmapping("/addteacher")
    @apioperation("添加教师接口")
    @responsebody
    @preauthorize("hasrole('管理员')")
    public message addteacher(user user){
        if(stringutils.isempty(user.getusername())){
            return message.error("请填写用户名");
        }
        if(stringutils.isempty(user.getpassword())){
            return message.error("请填写密码");
        }
        if(stringutils.isempty(user.getemail())){
            return message.error("请填写邮箱");
        }
        if(stringutils.isempty(user.gettel())){
            return message.error("请填写手机号");
        }
        user userbyusername = userservice.finduserbyusername(user.getusername());
        if(userbyusername!=null){
            return message.error("用户名已存在");
        }
        user.settype(2);
        if(userservice.adduser(user)<=0){
            return message.error("教师添加失败");
        }
        //保存工作流程操作
        identityservice is = engine.getidentityservice();
        // 添加用户组
        org.activiti.engine.identity.user userinfo = userservice.saveuser(is, user.getusername());
        group tgroup = new groupentityimpl();
        tgroup.setid("tgroup");
        userservice.saverel(is, userinfo, tgroup);
        operaterlogservice.add("添加教师成功,教师名称:"+user.getusername());
        return message.success();
    }
 
 
    /**
     * 修改教师操作
     * @param user
     * @return
     */
    @postmapping("/editsavestu")
    @apioperation("修改教师接口")
    @preauthorize("hasrole('管理员')")
    @responsebody
    public message editsavestu(user user){
        if(stringutils.isempty(user.getusername())){
            return message.error("请填写用户名");
        }
        if(stringutils.isempty(user.getemail())){
            return message.error("请填写邮箱");
        }
        if(stringutils.isempty(user.gettel())){
            return message.error("请填写手机号");
        }
        user userbyusername = userservice.finduserbyusername(user.getusername());
        if(userbyusername!=null){
            if(!userbyusername.getid().equals(user.getid())){
                return message.error("该用户名已存在");
            }
        }
        try {
            userservice.editsaveuser(user);
            operaterlogservice.add("编辑教师成功,教师名称:"+user.getusername());
            return message.success();
        } catch (exception e) {
            e.printstacktrace();
            return message.error("教师信息编辑失败");
        }
 
    }
 
 
}

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