如何使用ssm实现学生信息管理系统

    package com.controller;
    
    
    import java.text.SimpleDateFormat;
    import com.alibaba.fastjson.JSONObject;
    import java.util.*;
    import org.springframework.beans.BeanUtils;
    import javax.servlet.http.HttpServletRequest;
    import org.springframework.web.context.ContextLoader;
    import javax.servlet.ServletContext;
    import com.service.TokenService;
    import com.utils.StringUtil;
    import java.lang.reflect.InvocationTargetException;
    
    import com.service.DictionaryService;
    import org.apache.commons.lang3.StringUtils;
    import com.annotation.IgnoreAuth;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.*;
    import com.baomidou.mybatisplus.mapper.EntityWrapper;
    import com.baomidou.mybatisplus.mapper.Wrapper;
    
    import com.entity.KechengEntity;
    
    import com.service.KechengService;
    import com.entity.view.KechengView;
    import com.service.LaoshiService;
    import com.entity.LaoshiEntity;
    import com.utils.PageUtils;
    import com.utils.R;
    
    /** * 课程
     * 后端接口
     * @author
     * @email
     * @date 2021-03-13
    */
    @RestController
    @Controller
    @RequestMapping("/kecheng")
    public class KechengController {
    private static final Logger logger = LoggerFactory.getLogger(KechengController.class);
    
    @Autowired
    private KechengService kechengService;
    
    
    @Autowired
    private TokenService tokenService;
    @Autowired
    private DictionaryService dictionaryService;
    
    
    //级联表service
    @Autowired
    private LaoshiService laoshiService;
    
    
    /** * 后端列表
    */
    @RequestMapping("/page")
    public R page(@RequestParam Map<String, Object> params, HttpServletRequest request){
        logger.debug("page方法:,,Controller:{},,params:{}",this.getClass().getName(),JSONObject.toJSONString(params));
        String role = String.valueOf(request.getSession().getAttribute("role"));
        if(StringUtil.isNotEmpty(role) && "用户".equals(role)){
            params.put("yonghuId",request.getSession().getAttribute("userId"));
        }
        PageUtils page = kechengService.queryPage(params);
    
        //字典表数据转换
        List<KechengView> list =(List<KechengView>)page.getList();
        for(KechengView c:list){
            //修改对应字典表字段
            dictionaryService.dictionaryConvert(c);
        }
        return R.ok().put("data", page);
    }
    /** * 后端详情
    */
    @RequestMapping("/info/{id}")
    public R info(@PathVariable("id") Long id){
        logger.debug("info方法:,,Controller:{},,id:{}",this.getClass().getName(),id);
        KechengEntity kecheng = kechengService.selectById(id);
        if(kecheng !=null){
            //entity转view
            KechengView view = new KechengView();
            BeanUtils.copyProperties( kecheng , view );//把实体数据重构到view中
    
            //级联表
            LaoshiEntity laoshi = laoshiService.selectById(kecheng.getLaoshiId());
            if(laoshi != null){
                BeanUtils.copyProperties( laoshi , view ,new String[]{ "id", "createDate"});//把级联的数据添加到view中,并排除id和创建时间字段
                view.setLaoshiId(laoshi.getId());
            }
            //修改对应字典表字段
            dictionaryService.dictionaryConvert(view);
            return R.ok().put("data", view);
        }else {
            return R.error(511,"查不到数据");
        }
    
    }
    
    /** * 后端保存
    */
    @RequestMapping("/save")
    public R save(@RequestBody KechengEntity kecheng, HttpServletRequest request){
        logger.debug("save方法:,,Controller:{},,kecheng:{}",this.getClass().getName(),kecheng.toString());
        Wrapper<KechengEntity> queryWrapper = new EntityWrapper<KechengEntity>()
            .eq("laoshi_id", kecheng.getLaoshiId())
            .eq("kecheng_name", kecheng.getKechengName())
            .eq("kecheng_content", kecheng.getKechengContent())
            ;
        logger.info("sql语句:"+queryWrapper.getSqlSegment());
        KechengEntity kechengEntity = kechengService.selectOne(queryWrapper);
        if(kechengEntity==null){
            kecheng.setCreateTime(new Date());
        //  String role = String.valueOf(request.getSession().getAttribute("role"));
        //  if("".equals(role)){
        //      kecheng.set
        //  }
            kechengService.insert(kecheng);
            return R.ok();
        }else {
            return R.error(511,"表中有相同数据");
        }
    }
    
    /** * 修改
    */
    @RequestMapping("/update")
    public R update(@RequestBody KechengEntity kecheng, HttpServletRequest request){
        logger.debug("update方法:,,Controller:{},,kecheng:{}",this.getClass().getName(),kecheng.toString());
        //根据字段查询是否有相同数据
        Wrapper<KechengEntity> queryWrapper = new EntityWrapper<KechengEntity>()
            .notIn("id",kecheng.getId())
            .eq("laoshi_id", kecheng.getLaoshiId())
            .eq("kecheng_name", kecheng.getKechengName())
            .eq("kecheng_content", kecheng.getKechengContent())
            ;
        logger.info("sql语句:"+queryWrapper.getSqlSegment());
        KechengEntity kechengEntity = kechengService.selectOne(queryWrapper);
        if(kechengEntity==null){
            //  String role = String.valueOf(request.getSession().getAttribute("role"));
            //  if("".equals(role)){
            //      kecheng.set
            //  }
            kechengService.updateById(kecheng);//根据id更新
            return R.ok();
        }else {
            return R.error(511,"表中有相同数据");
        }
    }
    
    
    /** * 删除
    */
    @RequestMapping("/delete")
    public R delete(@RequestBody Integer[] ids){
        logger.debug("delete:,,Controller:{},,ids:{}",this.getClass().getName(),ids.toString());
        kechengService.deleteBatchIds(Arrays.asList(ids));
        return R.ok();
    }
    
    
    }
    
    
    
    
    
![](https://ad.itadn.com/c/weblog/blog-img/images/2025-08-18/D3oJtUPVhAwY8OlXf2y0MZxg5RaQ.png)

    package com.service.impl;
    
    
    import java.util.List;
    import java.util.Map;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    
    import com.dao.CommonDao;
    import com.service.CommonService;
    
    
    /** * 系统用户
     * @author yangliyuan
     * @date 2019年10月10日 上午9:17:59
     */
    @Service("commonService")
    public class CommonServiceImpl implements CommonService {
    	
    	@Autowired
    	private CommonDao commonDao;
    
    	@Override
    	public List<String> getOption(Map<String, Object> params) {
    		return commonDao.getOption(params);
    	}
    	
    	@Override
    	public Map<String, Object> getFollowByOption(Map<String, Object> params) {
    		return commonDao.getFollowByOption(params);
    	}
    	
    	@Override
    	public void sh(Map<String, Object> params) {
    		commonDao.sh(params); 
    	}
    
    	@Override
    	public int remindCount(Map<String, Object> params) {
    		return commonDao.remindCount(params);
    	}
    
    	@Override
    	public Map<String, Object> selectCal(Map<String, Object> params) {
    		return commonDao.selectCal(params);
    	}
    	
    	@Override
    	public List<Map<String, Object>> selectGroup(Map<String, Object> params) {
    		return commonDao.selectGroup(params);
    	}
    	
    	@Override
    	public List<Map<String, Object>> selectValue(Map<String, Object> params) {
    		return commonDao.selectValue(params);
    	}
    
    	@Override
    	public List<Map<String, Object>> chartBoth(Map<String, Object> params) {
    		return commonDao.chartBoth(params);
    	}
    
    	@Override
    	public List<Map<String, Object>> chartOne(Map<String, Object> params) {
    		return commonDao.chartOne(params);
    	}
    
    
    	/** * 新的级联字典表的  分组求和统计
    	 * @param params
    	 * @return
    	 */
    	@Override
    	public List<Map<String, Object>> newSelectGroupSum(Map<String, Object> params) {
    		return commonDao.newSelectGroupSum(params);
    	}
    
    
    	/** * 新的级联字典表的  分组条数统计
    	 * @param params
    	 * @return
    	 */
    	@Override
    	public List<Map<String, Object>> newSelectGroupCount(Map<String, Object> params) {
    		return commonDao.newSelectGroupCount(params);
    	}
    
    
    
    }
    
    
    
    
![](https://ad.itadn.com/c/weblog/blog-img/images/2025-08-18/oFHYVd3hfDzOCUcB7gZNS2e5Tpi6.png)

    package com.service.impl;
    
    import com.utils.StringUtil;
    import org.springframework.stereotype.Service;
    import java.lang.reflect.Field;
    import java.util.*;
    import com.baomidou.mybatisplus.plugins.Page;
    import com.baomidou.mybatisplus.service.impl.ServiceImpl;
    import org.springframework.transaction.annotation.Transactional;
    import com.utils.PageUtils;
    import com.utils.Query;
    import org.springframework.web.context.ContextLoader;
    import javax.servlet.ServletContext;
    
    import com.dao.DictionaryDao;
    import com.entity.DictionaryEntity;
    import com.service.DictionaryService;
    import com.entity.view.DictionaryView;
    
    /** * 字典表 服务实现类
     * @author 
     * @since 2021-03-13
     */
    @Service("dictionaryService")
    @Transactional
    public class DictionaryServiceImpl extends ServiceImpl<DictionaryDao, DictionaryEntity> implements DictionaryService {
    
    @Override
    public PageUtils queryPage(Map<String,Object> params) {
        if(params != null && (params.get("limit") == null || params.get("page") == null)){
            params.put("page","1");
            params.put("limit","10");
        }
        Page<DictionaryView> page =new Query<DictionaryView>(params).getPage();
        page.setRecords(baseMapper.selectListView(page,params));
        return new PageUtils(page);
    }
    
     /** * 赋值给字典表
     * @param obj view对象
     */
    public void dictionaryConvert(Object obj) {
        try {
            if (obj == null) return;
            //当前view和entity中的所有types的字段
            List<String> fieldNameList = new ArrayList<>();
            Class tempClass = obj.getClass();
            while (tempClass !=null) {
                Field[] declaredFields = tempClass.getDeclaredFields();
                for (Field f : declaredFields) {
                    f.setAccessible(true);
                    if (f.getType().getName().equals("java.lang.Integer") && f.getName().contains("Types")) {
                        fieldNameList.add(f.getName());
                    }
                }
                tempClass = tempClass.getSuperclass(); //得到父类,然后赋给自己
            }
    
            // 获取监听器中的字典表
            ServletContext servletContext = ContextLoader.getCurrentWebApplicationContext().getServletContext();
            Map<String, Map<Integer, String>> dictionaryMap= (Map<String, Map<Integer, String>>) servletContext.getAttribute("dictionaryMap");
    
            //通过Types的值给Value字段赋值
            for (String s : fieldNameList) {
                Field types = null;
                if(hasField(obj.getClass(),s)){
                    //判断view中有没有这个字段,有就通过反射取出字段
                    types= obj.getClass().getDeclaredField(s);//获取Types私有字段
                }else{
                    //本表中没有这个字段,说明它是父表中的字段,也就是entity中的字段,从entity中取值
                    types=obj.getClass().getSuperclass().getDeclaredField(s);
                }
                Field value = obj.getClass().getDeclaredField(s.replace("Types", "Value"));//获取value私有字段
                //设置权限
                types.setAccessible(true);
                value.setAccessible(true);
    
                //赋值
                if (StringUtil.isNotEmpty(String.valueOf(types.get(obj)))) { //types的值不为空
                    int i = Integer.parseInt(String.valueOf(types.get(obj)));//type
                    String s1 = s.replace("Types", "_types");
                    String s2 = dictionaryMap.get(s1).get(i);
                    value.set(obj, s2);
                } else {
                    new Exception("字典表赋值出现问题::::"+value.getName());
                    value.set(obj, "");
                }
            }
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        } catch (NoSuchFieldException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    /** * 判断本实体有没有这个字段
     * @param c
     * @param fieldName
     * @return
     */
    public boolean hasField(Class c, String fieldName){
        Field[] fields = c.getDeclaredFields();
    
        for (Field f : fields) {
            if (fieldName.equals(f.getName())) {
                return true;
    
            }
    
        }
    
        return false;
    }
    
    }
    
    
    
    
![](https://ad.itadn.com/c/weblog/blog-img/images/2025-08-18/f9v3ar4FewluK6XDyhVczSNLsMq8.png)

    !function(e){function t(e,t){return t*Math.floor(e/t)}function n(e,t,n,r){if("function"==typeof e.strftime)return e.strftime(t);var a=function(e,t){return e=""+e,t=""+(null==t?"0":t),1==e.length?t+e:e},i=[],o=!1,s=e.getHours(),u=12>s;null==n&&(n=["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]),null==r&&(r=["Sun","Mon","Tue","Wed","Thu","Fri","Sat"]);var m;m=s>12?s-12:0==s?12:s;for(var c=0;c<t.length;++c){var l=t.charAt(c);if(o){switch(l){case"a":l=""+r[e.getDay()];break;case"b":l=""+n[e.getMonth()];break;case"d":l=a(e.getDate());break;case"e":l=a(e.getDate()," ");break;case"h":case"H":l=a(s);break;case"I":l=a(m);break;case"l":l=a(m," ");break;case"m":l=a(e.getMonth()+1);break;case"M":l=a(e.getMinutes());break;case"q":l=""+(Math.floor(e.getMonth()/3)+1);break;case"S":l=a(e.getSeconds());break;case"y":l=a(e.getFullYear()%100);break;case"Y":l=""+e.getFullYear();break;case"p":l=u?"am":"pm";break;case"P":l=u?"AM":"PM";break;case"w":l=""+e.getDay()}i.push(l),o=!1}else"%"==l?o=!0:i.push(l)}return i.join("")}function r(e){function t(e,t,n,r){e[t]=function(){return n[r].apply(n,arguments)}}var n={date:e};void 0!=e.strftime&&t(n,"strftime",e,"strftime"),t(n,"getTime",e,"getTime"),t(n,"setTime",e,"setTime");for(var r=["Date","Day","FullYear","Hours","Milliseconds","Minutes","Month","Seconds"],a=0;a<r.length;a++)t(n,"get"+r[a],e,"getUTC"+r[a]),t(n,"set"+r[a],e,"setUTC"+r[a]);return n}function a(e,t){if("browser"==t.timezone)return new Date(e);if(t.timezone&&"utc"!=t.timezone){if("undefined"!=typeof timezoneJS&&"undefined"!=typeof timezoneJS.Date){var n=new timezoneJS.Date;return n.setTimezone(t.timezone),n.setTime(e),n}return r(new Date(e))}return r(new Date(e))}function i(r){r.hooks.processOptions.push(function(r){e.each(r.getAxes(),function(e,r){var i=r.options;"time"==i.mode&&(r.tickGenerator=function(e){var n=[],r=a(e.min,i),o=0,u=i.tickSize&&"quarter"===i.tickSize[1]||i.minTickSize&&"quarter"===i.minTickSize[1]?c:m;null!=i.minTickSize&&(o="number"==typeof i.tickSize?i.tickSize:i.minTickSize[0]*s[i.minTickSize[1]]);for(var l=0;l<u.length-1&&!(e.delta<(u[l][0]*s[u[l][1]]+u[l+1][0]*s[u[l+1][1]])/2&&u[l][0]*s[u[l][1]]>=o);++l);var h=u[l][0],f=u[l][1];if("year"==f){if(null!=i.minTickSize&&"year"==i.minTickSize[1])h=Math.floor(i.minTickSize[0]);else{var k=Math.pow(10,Math.floor(Math.log(e.delta/s.year)/Math.LN10)),d=e.delta/s.year/k;h=1.5>d?1:3>d?2:7.5>d?5:10,h*=k}1>h&&(h=1)}e.tickSize=i.tickSize||[h,f];var g=e.tickSize[0];f=e.tickSize[1];var M=g*s[f];"second"==f?r.setSeconds(t(r.getSeconds(),g)):"minute"==f?r.setMinutes(t(r.getMinutes(),g)):"hour"==f?r.setHours(t(r.getHours(),g)):"month"==f?r.setMonth(t(r.getMonth(),g)):"quarter"==f?r.setMonth(3*t(r.getMonth()/3,g)):"year"==f&&r.setFullYear(t(r.getFullYear(),g)),r.setMilliseconds(0),M>=s.minute&&r.setSeconds(0),M>=s.hour&&r.setMinutes(0),M>=s.day&&r.setHours(0),M>=4*s.day&&r.setDate(1),M>=2*s.month&&r.setMonth(t(r.getMonth(),3)),M>=2*s.quarter&&r.setMonth(t(r.getMonth(),6)),M>=s.year&&r.setMonth(0);var y,S=0,z=Number.NaN;do if(y=z,z=r.getTime(),n.push(z),"month"==f||"quarter"==f)if(1>g){r.setDate(1);var p=r.getTime();r.setMonth(r.getMonth()+("quarter"==f?3:1));var v=r.getTime();r.setTime(z+S*s.hour+(v-p)*g),S=r.getHours(),r.setHours(0)}else r.setMonth(r.getMonth()+g*("quarter"==f?3:1));else"year"==f?r.setFullYear(r.getFullYear()+g):r.setTime(z+M);while(z<e.max&&z!=y);return n},r.tickFormatter=function(e,t){var r=a(e,t.options);if(null!=i.timeformat)return n(r,i.timeformat,i.monthNames,i.dayNames);var o,u=t.options.tickSize&&"quarter"==t.options.tickSize[1]||t.options.minTickSize&&"quarter"==t.options.minTickSize[1],m=t.tickSize[0]*s[t.tickSize[1]],c=t.max-t.min,l=i.twelveHourClock?" %p":"",h=i.twelveHourClock?"%I":"%H";o=m<s.minute?h+":%M:%S"+l:m<s.day?c<2*s.day?h+":%M"+l:"%b %d "+h+":%M"+l:m<s.month?"%b %d":u&&m<s.quarter||!u&&m<s.year?c<s.year?"%b":"%b %Y":u&&m<s.year?c<s.year?"Q%q":"Q%q %Y":"%Y";var f=n(r,o,i.monthNames,i.dayNames);return f})})})}var o={xaxis:{timezone:null,timeformat:null,twelveHourClock:!1,monthNames:null}},s={second:1e3,minute:6e4,hour:36e5,day:864e5,month:2592e6,quarter:7776e6,year:525949.2*60*1e3},u=[[1,"second"],[2,"second"],[5,"second"],[10,"second"],[30,"second"],[1,"minute"],[2,"minute"],[5,"minute"],[10,"minute"],[30,"minute"],[1,"hour"],[2,"hour"],[4,"hour"],[8,"hour"],[12,"hour"],[1,"day"],[2,"day"],[3,"day"],[.25,"month"],[.5,"month"],[1,"month"],[2,"month"]],m=u.concat([[3,"month"],[6,"month"],[1,"year"]]),c=u.concat([[1,"quarter"],[2,"quarter"],[1,"year"]]);e.plot.plugins.push({init:i,options:o,name:"time",version:"1.0"}),e.plot.formatDate=n,e.plot.dateGenerator=a}(jQuery);