先说学生端：
先说框架的搭建，本项目使用的是SSH框架，用到的表六张。学生端的有七个功能。都实现了，后期会加上一点优化的功能包括界面设计，更多的检查。
下面是一些比较重要的类的实现
1.增删改查
1 package cn.hp.base.dao;
2
3 import java.io.Serializable;
4 import java.lang.reflect.ParameterizedType;
5 import java.util.List;
6
7 import org.hibernate.Query;
8 import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
9
10 import cn.hp.core.page.PageResult;
11 import cn.hp.core.util.QueryHelper;
12
13 public abstract class BaseDaoImpl<T> extends HibernateDaoSupport implements BaseDao<T> {
14 Class<T> clazz;
15 public BaseDaoImpl()
16 {//BaseDaoImpl<User>获取弗雷德简单类名
17 ParameterizedType pt=(ParameterizedType) this.getClass().getGenericSuperclass();
18 clazz=(Class<T>) pt.getActualTypeArguments()[0];//
19 }
20
21 @Override
22 public void save(T entity) {
23 getHibernateTemplate().save(entity);
24 }
25
26 @Override
27 public void update(T entity) {
28 getHibernateTemplate().update(entity);
29 }
30
31 @Override
32 public void delete(Serializable id) {
33 // TODO Auto-generated method stub
34
35 }
36
37 @Override
38 public T findObjectById(Serializable id) {
39 return getHibernateTemplate().get(clazz, id);//getHibernateTemplate().get(clazz, id);
40 }
41
42 @Override
43 public List<T> findAll() {
44 Query query = getSession().createQuery("from "+clazz.getSimpleName());
45 return query.list();
46 }
47
48 @Override
49 public PageResult getPageResult(QueryHelper queryHelper, int pageNo,
50 int pageSize) {
51 System.out.println(queryHelper.getQueryListHql()+"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
52 Query query=getSession().createQuery(queryHelper.getQueryListHql());
53 List<Object> parameters=queryHelper.getParameters();
54 if(parameters!=null)
55 {
56 for(int i=0;i<parameters.size();i++)
57 {
58 query.setParameter(i, parameters.get(i));
59 }
60 }
61
62 if(pageNo<1) pageNo=1;
63 query.setFirstResult((pageNo-1)*pageSize);//设置数据的起始索引号
64 query.setMaxResults(pageSize);
65 List items= query.list();
66 //获取总记录数
67 Query queryCount=getSession().createQuery(queryHelper.getQuerycountHql());
68 if(parameters!=null)
69 {
70 for(int i=0;i<parameters.size();i++)
71 {
72 queryCount.setParameter(i, parameters.get(i));
73 }
74 }
75 long tptalCount = (Long) queryCount.uniqueResult();
76
77 return new PageResult(tptalCount, pageNo, pageSize, items);
78 }
79
80 }
2.查询助手
1 package cn.hp.core.util;
2
3 import java.util.ArrayList;
4 import java.util.List;
5
6 public class QueryHelper {
7 //from子句
8 private String fromClause="";
9 //where子句
10 private String whereClause="";
11 //order by子句
12 private String orderByClause="";
13
14 private List<Object> parameters;
15 //排序顺序
16 public static String ORDER_BY_DESC="DESC";
17 public static String ORDER_BY_ASC="ASC";
18 /*
19 * 构造from子句
20 * Class clazz实体类
21 * String alias实体类对应的别名
22 */
23 public QueryHelper(Class clazz,String alias)
24 {
25 fromClause="FROM "+clazz.getSimpleName()+" "+alias;
26 }
27 /*
28 * 构造where子句，
29 * condition查询条件语句，列如i.title like ?
30 * params查询条件中对应的查询条件值，例如：%标题%
31 */
32 public void addCondition(String condition,Object... params)
33 {//设置查询条件值到查询条件值集合中
34 if(whereClause.length()>1)
35 {
36 whereClause+=" AND "+condition;
37 }
38 else
39 {
40 whereClause=" WHERE "+condition;
41 }
42 if(parameters==null)
43 {
44 parameters=new ArrayList<Object>();
45 }
46 if(params!=null)
47 {
48 for(Object param:params)
49 {
50 parameters.add(param);
51 }
52 }
53 }
54 public void addOrderByProperty(String property,String order)
55 {//
56 if(orderByClause.length()>1)
57 {
58 orderByClause+=","+property+" "+order;
59 }
60 else
61 {
62 orderByClause=" ORDER BY "+property+" "+order;
63 }
64 }
65
66 //1.查询HQL语句
67 public String getQueryListHql()
68 {
69 return fromClause+whereClause+orderByClause;
70 }
71
72 //1.查询HQL语句
73 public String getQuerycountHql()
74 {
75 return "SELECT count(*) "+fromClause+whereClause;
76 }
77
78 //2.查询HQL语句？对应的条件值集合
79 public List<Object> getParameters()
80 {
81 return parameters;
82 }
83
84 }
3.分页对象
1 package cn.hp.core.page;
2
3 import java.util.ArrayList;
4 import java.util.List;
5
6 public class PageResult {
7 //总记录数
8 private long totalCount;
9 //当前页号
10 private int pageNo;
11 //总页数
12 private int totalPageCount;
13
14 //页大小
15 private int pageSize;
16 //列表记录
17 public List items;
18 //计算总页数
19 public PageResult(long totalCount, int pageNo, int pageSize, List items) {
20 //防止出现空指针异常
21 this.items = items==null?new ArrayList():items;
22 this.totalCount = totalCount;
23 this.pageSize = pageSize;
24 if(totalCount!=0)//计算总页数
25 {
26 int tem=(int)totalCount/pageSize;
27 this.totalPageCount =totalCount%pageSize==0?tem:tem+1;
28 this.pageNo=pageNo;
29 }
30 else
31 {
32 this.pageNo =0;
33 }
34 }
35
36 public long getTotalCount() {
37 return totalCount;
38 }
39 public void setTotalCount(long totalCount) {
40 this.totalCount = totalCount;
41 }
42 public int getPageNo() {
43 return pageNo;
44 }
45 public void setPageNo(int pageNo) {
46 this.pageNo = pageNo;
47 }
48 public int getTotalPageCount() {
49 return totalPageCount;
50 }
51 public void setTotalPageCount(int totalPageCount) {
52 this.totalPageCount = totalPageCount;
53 }
54 public int getPageSize() {
55 if(pageSize<1) pageSize=1;
56 return pageSize;
57 }
58 public void setPageSize(int pageSize) {
59 this.pageSize = pageSize;
60 }
61 public List getItems() {
62 return items;
63 }
64 public void setItems(List items) {
65 this.items = items;
66 }
67
68 }
4.BaseAction，接收页面传过来的常用参数，其他的Action都继承于它。
1 package cn.hp.stu.action;
2
3 import cn.hp.core.page.PageResult;
4
5 import com.opensymphony.xwork2.ActionSupport;
6
7 public class BaseAction extends ActionSupport{
8
9 protected PageResult pageResult;
10 private int pageNo;
11 private int pageSize;
12 protected String[] selectedRow;
13
14
15 public String[] getSelectedRow() {
16 return selectedRow;
17 }
18
19 public void setSelectedRow(String[] selectedRow) {
20 this.selectedRow = selectedRow;
21 }
22
23 private static int DEFAULT_PAGE_SIZE=3;
24
25
26 public PageResult getPageResult() {
27 return pageResult;
28 }
29
30 public void setPageResult(PageResult pageResult) {
31 this.pageResult = pageResult;
32 }
33
34 public int getPageSize() {
35 if(pageSize<1) pageSize=DEFAULT_PAGE_SIZE;
36 return pageSize;
37 }
38
39 public void setPageSize(int pageSize) {
40 this.pageSize = pageSize;
41 }
42
43 public int getPageNo() {
44 return pageNo;
45 }
46
47 public void setPageNo(int pageNo) {
48 this.pageNo = pageNo;
49 }
50 }
5.接收页面参数的StuAction，主要有上传，下载，跳转等等
1 package cn.hp.stu.action;
2
3 import java.io.File;
4 import java.io.FileInputStream;
5 import java.io.IOException;
6 import java.io.InputStream;
7 import java.util.Date;
8 import java.util.List;
9
10 import javax.annotation.Resource;
11 import javax.servlet.ServletOutputStream;
12 import javax.servlet.http.HttpServletResponse;
13
14 import org.apache.commons.io.FileUtils;
15 import org.apache.commons.lang.StringUtils;
16 import org.apache.commons.logging.Log;
17 import org.apache.commons.logging.LogFactory;
18 import org.apache.struts2.ServletActionContext;
19
20 import cn.hp.core.entity.Classinfo;
21 import cn.hp.core.entity.Stu;
22 import cn.hp.core.entity.StuWork;
23 import cn.hp.core.entity.TeaWork;
24 import cn.hp.core.stu.Constant;
25 import cn.hp.core.util.QueryHelper;
26 import cn.hp.stu.service.StuService;
27 import cn.hp.stuwork.service.StuWorkService;
28 import cn.hp.teawork.service.TeaWorkService;
29
30 /*
31 * 上传作业需修改
32 */
33 public class StuAction extends BaseAction{
34 private Stu stu;//
35
36 private String stuUserName;//学生的用户名
37 private Integer stuScore;//学生的分数
38 private String stuPassword;//密码
39 private String mail;//邮箱
40
41 private String fileName;//上传作业的文件名
42
43 private String msg;//显示相应的错误消息
44
45 private String username;
46 private String password;
47 private String RoleType;
48
49 private File word;
50 private String wordFileName;
51 private String wordContentType;
52
53 private Date submitTime;
54 @Resource
55 private StuService stuService;
56
57 private StuWork stuWork;
58 @Resource
59 private StuWorkService stuWorkService;
60
61 private Classinfo classinfo;//查找学生的时候顺便把他的班级查找出来。
62
63 @Resource
64 private TeaWorkService teaWorkService;
65 //顶部
66 public String top()
67 {
68
69 return "top";
70 }
71
72 //左部的页面
73 public String left()
74 {
75 return "left";
76 }
77
78 //跳转到学生注册界面
79 public String registUI()
80 {
81 return "registUI";
82 }
83
84 //跳转到框架的主界面
85 public String frame()
86 {
87 return "frame";
88 }
89
90 //跳转到教师发布信息的页面
91 public String teaPub()
92 {
93 QueryHelper queryHelper=new QueryHelper(TeaWork.class, "t");
94 queryHelper.addCondition("t.teaId =? or t.teaId =?", 1,2);
95 pageResult=teaWorkService.findTeapubByStu(queryHelper,getPageNo(),getPageSize());
96 return "teapubUI";
97 }
98
99 //加载教师评论
100 public String teacomm()
101 {
102 Stu stu=(Stu) ServletActionContext.getRequest().getSession().getAttribute(Constant.STU);
103 pageResult=stuWorkService.findCommentByStu("hepan",getPageNo(),getPageSize());
104 return "teacomm";
105 }
106
107 //保存学生的注册信息
108 public String regist()
109 {
110 if(StringUtils.isNotBlank(stu.getStuUserName())&&StringUtils.isNotBlank(stu.getStuPassword()))
111 {
112 List<Stu> ls=stuService.fingStuByUsername(stu.getStuUserName());
113 if(ls.size()>0&&ls!=null)
114 {
115 msg="用户已经存在";
116 return "registUI";
117 }
118 stuService.save(stu);
119 }
120 else
121 {
122 msg="用户名或密码为空";
123 return "registUI";
124 }
125 return "home";
126 }
127
128
129 public String loginUI()
130 {
131 return "loginUI";
132 }
133
134 //查询出分数前十的学生,跳转到转到榜样学习的界面
135 public String learn()
136 {
137 System.out.println("chaxun..................");
138 QueryHelper queryHelper=new QueryHelper(StuWork.class, "w");
139 queryHelper.addOrderByProperty("w.score ",QueryHelper.ORDER_BY_DESC);
140 pageResult=stuService.getPageResult(queryHelper,getPageNo(),getPageSize());
141 return "sup_listUI";
142 }
143
144 //用户点击登陆之后执行的代码
145 public String login()
146 {
147 if(null!=RoleType&&RoleType.equals("rbStudent")&&StringUtils.isNotBlank(username)&&StringUtils.isNotBlank(password))
148 {
149 List<Stu> ls=stuService.fingStuByUsernameAndPassword(username,password);
150 if(ls.size()>0&&ls!=null)
151 {
152 Stu st=ls.get(0);
153 ServletActionContext.getRequest().getSession().setAttribute(Constant.STU, st);
154 Log log = LogFactory.getLog(getClass());
155 return "frame";
156 }
157 else
158 {
159 setMsg("用户名或密码错误");
160 }
161 return "home";
162 }
163 else
164 {
165 setMsg("亲输入用户名密码");
166 }
167 return "home";
168 }
169
170 //跳转到学生列表界面
171 public String listUI()
172 {
173 QueryHelper queryHelper=new QueryHelper(Stu.class, " s ");
174 //从当前的Session中获取用户的信息，进行查找显示在相应的页面上
175 // Stu stu1 = (Stu) ServletActionContext.getRequest().getSession().getAttribute(Constant.STU);
176 // queryHelper.addCondition("s.stuUserName=? ", stu1.getStuUserName());
177 queryHelper.addCondition("s.stuUserName=? ", "hepan");
178 pageResult=stuService.getPageResult(queryHelper,getPageNo(),getPageSize());
179 return "listUI";
180 }
181
182 //依据用户名搜索学生的信息
183 public String doSearch()
184 {
185 if(StringUtils.isNotBlank(stu.getStuUserName()))
186 {
187 QueryHelper queryHelper=new QueryHelper(Stu.class, "s");
188 queryHelper.addCondition(" s.stuUserName like ?", "%"+stu.getStuUserName()+"%");
189 pageResult=stuService.getPageResult(queryHelper,getPageNo(),getPageSize());
190 }
191 return "listUI";
192 }
193
194 //跳转到编辑学生页面
195 public String editUI()
196 {
197 Stu stu1 = (Stu) ServletActionContext.getRequest().getSession().getAttribute(Constant.STU);
198 /*if(StringUtils.isNotBlank(stu.getStuUserName()))
199 {
200 stu=stuService.findObjectById(stu.getStuUserName());
201 }*/
202 stu=stuService.findObjectById("hepan");
203 return "editUI";
204 }
205
206 //保存编辑
207 public String edit()
208 {
209 System.out.println(stu.getStuScore());
210 System.out.println(stu);
211 if(StringUtils.isNotBlank(stu.getStuUserName()))
212 {
213 stuService.update(stu);
214 }
215 return listUI();
216 }
217
218 //处理上传文件的页面
219 public String upLoad()
220 {
221 String realPath = ServletActionContext.getServletContext().getRealPath("upload/stu");
222 System.out.println(realPath);
223 System.out.println(wordFileName);
224 try {
225 FileUtils.copyFile(word, new File(realPath, wordFileName));
226 } catch (IOException e) {
227 // TODO Auto-generated catch block
228 e.printStackTrace();
229 }
230 //把上传时间写入相应的表中
231 StuWork stuWork=new StuWork();
232 //设定学生提交作业的时间
233 Date time= new java.sql.Date(new java.util.Date().getTime());
234
235 stuWork.setSubmitTime(time);
236 stuWork.setWorkPath(fileName);//保存学生上传的文件名
237 Stu stu = (Stu) ServletActionContext.getRequest().getSession().getAttribute(Constant.STU);//从Session里面获取学生
238 stuWork.setStu(stu);
239
240 stuWork.setTeaWork(teaWorkService.findObjectById(1));
241
242 stuWorkService.save(stuWork);
243 return listUI();
244 }
245
246 //实现文件的下载
247 public void downLoad() throws IOException
248 {
249 HttpServletResponse response = ServletActionContext.getResponse();
250 response.setContentType("text/plain;charset=UTF-8");
251 response.setHeader("Content-Disposition", "attachment;filename="
252 +new String(this.fileName.getBytes(),"ISO-8859-1"));
253 String realPath = ServletActionContext.getServletContext().getRealPath("upload/tea/"+fileName);
254 InputStream in=new FileInputStream(realPath);
255 ServletOutputStream outputStream = response.getOutputStream();
256 byte [] buf=new byte[1024];
257
258 while(in.read(buf)!=-1)
259 {
260 outputStream.write(buf);
261 }
262 if(in!=null)
263 {
264 in.close();
265 }
266 if(outputStream!=null)
267 {
268 outputStream.close();
269 }
270 }
271
272 public File getWord() {
273 return word;
274 }
275
276 public void setWord(File word) {
277 this.word = word;
278 }
279
280 public String getWordFileName() {
281 return wordFileName;
282 }
283
284 public void setWordFileName(String wordFileName) {
285 this.wordFileName = wordFileName;
286 }
287
288 public String uploadUI()
289 {
290 return "uploadUI";
291 }
292
293 public Stu getStu() {
294 return stu;
295 }
296
297 public void setStu(Stu stu) {
298 this.stu = stu;
299 }
300
301 public Integer getStuScore() {
302 return stuScore;
303 }
304
305 public void setStuScore(Integer stuScore) {
306 this.stuScore = stuScore;
307 }
308
309 public String getStuUserName() {
310 return stuUserName;
311 }
312
313 public void setStuUserName(String stuUserName) {
314 this.stuUserName = stuUserName;
315 }
316
317 public String getStuPassword() {
318 return stuPassword;
319 }
320
321 public void setStuPassword(String stuPassword) {
322 this.stuPassword = stuPassword;
323 }
324
325 public String getMsg() {
326 return msg;
327 }
328
329 public void setMsg(String msg) {
330 this.msg = msg;
331 }
332
333 public void addActionError(String anErrorMessage){
334 String s=anErrorMessage;
335 System.out.println(s+"TUUUUUUUUUUUUUUUUU");
336 }
337
338 public void addActionMessage(String aMessage){
339 String s=aMessage;
340 }
341
342 public void addFieldError(String fieldName, String errorMessage){
343 String s=errorMessage;
344 String f=fieldName;
345 System.out.println(f);
346 }
347
348 public String getWordContentType() {
349 return wordContentType;
350 }
351
352 public void setWordContentType(String wordContentType) {
353 this.wordContentType = wordContentType;
354 }
355
356
357 public String getFileName() {
358 return fileName;
359 }
360
361 public void setFileName(String fileName) {
362 System.out.println(fileName);
363 this.fileName = fileName;
364 }
365
366
367
368 public String getMail() {
369 return mail;
370 }
371
372 public void setMail(String mail) {
373 this.mail = mail;
374 }
375
376 public StuService getStuService() {
377 return stuService;
378 }
379
380 public void setStuService(StuService stuService) {
381 this.stuService = stuService;
382 }
383
384 public String getUsername() {
385 return username;
386 }
387
388 public void setUsername(String username) {
389 this.username = username;
390 }
391
392 public String getPassword() {
393 return password;
394 }
395
396 public void setPassword(String password) {
397 this.password = password;
398 }
399
400 public String getRoleType() {
401 return RoleType;
402 }
403
404 public void setRoleType(String roleType) {
405 RoleType = roleType;
406 }
407
408 public Date getSubmitTime() {
409 return submitTime;
410 }
411
412 public void setSubmitTime(Date submitTime) {
413 this.submitTime = submitTime;
414 }
415
416 public StuWork getStuWork() {
417 return stuWork;
418 }
419
420 public void setStuWork(StuWork stuWork) {
421 this.stuWork = stuWork;
422 }
423
424
425 private String workId;//作业id
426 private TeaWork teaWork;//教师作业
427 private String workPath;//作业的提交路径
428 private Integer score;//分数
429 private String comment;//教师的品论
430 public String getWorkId() {
431 return workId;
432 }
433
434 public void setWorkId(String workId) {
435 this.workId = workId;
436 }
437
438 public TeaWork getTeaWork() {
439 return teaWork;
440 }
441
442 public void setTeaWork(TeaWork teaWork) {
443 this.teaWork = teaWork;
444 }
445
446 public String getWorkPath() {
447 return workPath;
448 }
449
450 public void setWorkPath(String workPath) {
451 this.workPath = workPath;
452 }
453
454 public Integer getScore() {
455 return score;
456 }
457
458 public void setScore(Integer score) {
459 this.score = score;
460 }
461
462 public String getComment() {
463 System.out.println(comment+"1111111111111111111");
464 return comment;
465 }
466
467 public void setComment(String comment) {
468 this.comment = comment;
469 }
470
471 public Classinfo getClassinfo() {
472 return classinfo;
473 }
474
475 public void setClassinfo(Classinfo classinfo) {
476 this.classinfo = classinfo;
477 }
478
479 }
界面预览现在还没加上界面的美化，简单地预览一下，功能都实现了。
界面后期会增强：包括美化，增加js，HTML，JQuery等等
时间： 2024-10-06 13:49:32