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1、杨教授大学堂 精心创作的优秀程序员 职业提升必读系列资料基于J2EE Struts框架的课程设计实训项目BBS论坛系统构建系统持久层中各个实体PO类（第1/2部分）1.1.1 构造出本Web项目中的DAO层的各个实体PO类组件1、本项目中的各个PO的类图2、在数据访问层中添加各个PO类建立UserInfoBasePO实体类（1）UserInfoBasePO基类，包名称为com.px1987.webbbs.dao，并实现java.io.Serializable接口（2）添加下面的各个成员属性private String id;private String userName;private Str
2、ing userPassWord;private int userType;private String aliaoName;private String passWordAsk;private String userImage;private String registerTime;private String passWordAnswer;private String userMail;private int userSex;private String userBirthDay;private String userComeFrom;private String userResume;（
3、3）并为这些成员属性提供get/set方法（4）最后产生出下面的代码package com.px1987.webbbs.dao;public class UserInfoBasePO implements java.io.Serializable private static final long serialVersionUID = 1L;private String id;private String userName;private String userPassWord;private int userType;private String aliaoName;private Stri
4、ng passWordAsk;private String userImage;private String registerTime;private String passWordAnswer;private String userMail;private int userSex;private String userBirthDay;private String userComeFrom;private String userResume;public UserInfoBasePO() public String getAliaoName() return aliaoName;public
5、 void setAliaoName(String aliaoName) this.aliaoName = aliaoName;public String getId() return id;public void setId(String id) this.id = id;public String getPassWordAnswer() return passWordAnswer;public void setPassWordAnswer(String passWordAnswer) this.passWordAnswer = passWordAnswer;public String ge
6、tPassWordAsk() return passWordAsk;public void setPassWordAsk(String passWordAsk) this.passWordAsk = passWordAsk;public String getRegisterTime() return registerTime;public void setRegisterTime(String registerTime) this.registerTime = registerTime;public String getUserBirthDay() return userBirthDay;pu
7、blic void setUserBirthDay(String userBirthDay) this.userBirthDay = userBirthDay;public String getUserComeFrom() return userComeFrom;public void setUserComeFrom(String userComeFrom) this.userComeFrom = userComeFrom;public String getUserImage() return userImage;public void setUserImage(String userImag
8、e) this.userImage = userImage;public String getUserMail() return userMail;public void setUserMail(String userMail) this.userMail = userMail;public String getUserName() return userName;public void setUserName(String userName) this.userName = userName;public String getUserPassWord() return userPassWor
9、d;public void setUserPassWord(String userPassWord) this.userPassWord = userPassWord;public String getUserResume() return userResume;public void setUserResume(String userResume) this.userResume = userResume;public int getUserSex() return userSex;public void setUserSex(int userSex) this.userSex = user
10、Sex;public int getUserType() return userType;public void setUserType(int userType) this.userType = userType;Overridepublic int hashCode() final int PRIME = 31;int result = 1;result = PRIME * result + (aliaoName = null) ? 0 : aliaoName.hashCode();result = PRIME * result + (id = null) ? 0 : id.hashCod
11、e();result = PRIME * result + (passWordAnswer = null) ? 0 : passWordAnswer.hashCode();result = PRIME * result + (passWordAsk = null) ? 0 : passWordAsk.hashCode();result = PRIME * result + (registerTime = null) ? 0 : registerTime.hashCode();result = PRIME * result + (userBirthDay = null) ? 0 : userBi
12、rthDay.hashCode();result = PRIME * result + (userComeFrom = null) ? 0 : userComeFrom.hashCode();result = PRIME * result + (userImage = null) ? 0 : userImage.hashCode();result = PRIME * result + (userMail = null) ? 0 : userMail.hashCode();result = PRIME * result + (userName = null) ? 0 : userName.has
13、hCode();result = PRIME * result + (userPassWord = null) ? 0 : userPassWord.hashCode();result = PRIME * result + (userResume = null) ? 0 : userResume.hashCode();result = PRIME * result + userSex;result = PRIME * result + userType;return result;Overridepublic boolean equals(Object obj) if (this = obj)
14、return true;if (obj = null)return false;if (getClass() != obj.getClass()return false;final UserInfoBasePO other = (UserInfoBasePO) obj;if (aliaoName = null) if (other.aliaoName != null)return false; else if (!aliaoName.equals(other.aliaoName)return false;if (id = null) if (other.id != null)return fa
15、lse; else if (!id.equals(other.id)return false;if (passWordAnswer = null) if (other.passWordAnswer != null)return false; else if (!passWordAnswer.equals(other.passWordAnswer)return false;if (passWordAsk = null) if (other.passWordAsk != null)return false; else if (!passWordAsk.equals(other.passWordAs
16、k)return false;if (registerTime = null) if (other.registerTime != null)return false; else if (!registerTime.equals(other.registerTime)return false;if (userBirthDay = null) if (other.userBirthDay != null)return false; else if (!userBirthDay.equals(other.userBirthDay)return false;if (userComeFrom = nu
17、ll) if (other.userComeFrom != null)return false; else if (!userComeFrom.equals(other.userComeFrom)return false;if (userImage = null) if (other.userImage != null)return false; else if (!userImage.equals(other.userImage)return false;if (userMail = null) if (other.userMail != null)return false; else if
18、 (!userMail.equals(other.userMail)return false;if (userName = null) if (other.userName != null)return false; else if (!userName.equals(other.userName)return false;if (userPassWord = null) if (other.userPassWord != null)return false; else if (!userPassWord.equals(other.userPassWord)return false;if (u
19、serResume = null) if (other.userResume != null)return false; else if (!userResume.equals(other.userResume)return false;if (userSex != other.userSex)return false;if (userType != other.userType)return false;return true;3、在数据访问层中添加各个PO类建立UserInfoPO实体类（1）UserInfoPO类，包名称为com.px1987.webbbs.dao并继承于com.px19
20、87.webbbs.dao.UserInfoBasePO基类（2）添加下面的各个成员属性private Map contactMethod = new HashMap();private String userSign;private int emailVisible;private int acceptAdvise;（3）并为这些成员属性提供get/set方法（4）最后产生出下面的代码package com.px1987.webbbs.dao;import java.util.ArrayList;import java.util.HashMap;import java.util.HashSe
21、t;import java.util.Map;import java.util.Set;public class UserInfoPO extends UserInfoBasePO private Map contactMethod = new HashMap();private String userSign;private int emailVisible;private int acceptAdvise;public UserInfoPO() public int getAcceptAdvise() return acceptAdvise;public void setAcceptAdv
22、ise(int acceptAdvise) this.acceptAdvise = acceptAdvise;public Map getContactMethod() return contactMethod;public void setContactMethod(Map contactMethod) this.contactMethod = contactMethod;public int getEmailVisible() return emailVisible;public void setEmailVisible(int emailVisible) this.emailVisibl
23、e = emailVisible;public String getUserSign() return userSign;public void setUserSign(String userSign) this.userSign = userSign;public void addOneContactMethod(String oneContactMethodKey,String oneContactMethodValue) /该方法为“帮助方法”contactMethod.put(oneContactMethodKey,oneContactMethodValue);public Strin
24、g getOneContactMethod(String oneContactMethodKey) /该方法为“帮助方法”return (String)contactMethod.get(oneContactMethodKey);/在“一”端（UserInfo）的PO类中增加一个“多”端（BBSInfo）的集合对象的属性private Set bbsInfos = new HashSet();public Set getBbsInfos()return bbsInfos;public void setBbsInfos(Set bbsInfos) this.bbsInfos = bbsInfos
25、;public ArrayList getBBSInfoSByUser() /利用该方法可以获得该用户所发表的BBS信息ArrayList allBBSInfosByOneUser=null;allBBSInfosByOneUser=new ArrayList();java.util.Iterator allBBSInfoItemIterator = getBbsInfos().iterator();while(allBBSInfoItemIterator.hasNext()BBSInfoPO oneBBSInfo=(BBSInfoPO)allBBSInfoItemIterator.next(
26、);allBBSInfosByOneUser.add(oneBBSInfo);return allBBSInfosByOneUser;Overridepublic int hashCode() final int PRIME = 31;int result = super.hashCode();result = PRIME * result + acceptAdvise;result = PRIME * result + (bbsInfos = null) ? 0 : bbsInfos.hashCode();result = PRIME * result + (contactMethod =
27、null) ? 0 : contactMethod.hashCode();result = PRIME * result + emailVisible;result = PRIME * result + (userSign = null) ? 0 : userSign.hashCode();return result;Overridepublic boolean equals(Object obj) if (this = obj)return true;if (!super.equals(obj)return false;if (getClass() != obj.getClass()retu
28、rn false;final UserInfoPO other = (UserInfoPO) obj;if (acceptAdvise != other.acceptAdvise)return false;if (bbsInfos = null) if (other.bbsInfos != null)return false; else if (!bbsInfos.equals(other.bbsInfos)return false;if (contactMethod = null) if (other.contactMethod != null)return false; else if (
29、!contactMethod.equals(other.contactMethod)return false;if (emailVisible != other.emailVisible)return false;if (userSign = null) if (other.userSign != null)return false; else if (!userSign.equals(other.userSign)return false;return true;4、在数据访问层中添加各个PO类建立AdminUserInfoPO实体类（1）AdminUserInfoPO类，包名称为com.p
30、x1987.webbbs.dao并且也继承于com.px1987.webbbs.dao.UserInfoBasePO类（2）添加下面的成员属性private String workUnit;private String studyHistory;private String studySchool;private String idCardNo;（3）并这些成员属性提供get/set方法（4）最后产生出下面的代码package com.px1987.webbbs.dao;public class AdminUserInfoPO extends UserInfoBasePO private St
31、ring workUnit;private String studyHistory;private String studySchool;private String idCardNo;public AdminUserInfoPO() public String getIdCardNo() return idCardNo;public void setIdCardNo(String idCardNo) this.idCardNo = idCardNo;public String getStudyHistory() return studyHistory;public void setStudy
32、History(String studyHistory) this.studyHistory = studyHistory;public String getStudySchool() return studySchool;public void setStudySchool(String studySchool) this.studySchool = studySchool;public String getWorkUnit() return workUnit;public void setWorkUnit(String workUnit) this.workUnit = workUnit;
33、Overridepublic int hashCode() final int PRIME = 31;int result = super.hashCode();result = PRIME * result + (idCardNo = null) ? 0 : idCardNo.hashCode();result = PRIME * result + (studyHistory = null) ? 0 : studyHistory.hashCode();result = PRIME * result + (studySchool = null) ? 0 : studySchool.hashCo
34、de();result = PRIME * result + (workUnit = null) ? 0 : workUnit.hashCode();return result;Overridepublic boolean equals(Object obj) if (this = obj)return true;if (!super.equals(obj)return false;if (getClass() != obj.getClass()return false;final AdminUserInfoPO other = (AdminUserInfoPO) obj;if (idCard
35、No = null) if (other.idCardNo != null)return false; else if (!idCardNo.equals(other.idCardNo)return false;if (studyHistory = null) if (other.studyHistory != null)return false; else if (!studyHistory.equals(other.studyHistory)return false;if (studySchool = null) if (other.studySchool != null)return f
36、alse; else if (!studySchool.equals(other.studySchool)return false;if (workUnit = null) if (other.workUnit != null)return false; else if (!workUnit.equals(other.workUnit)return false;return true;5、在数据访问层中添加各个PO类建立BBSInfoPO实体类（1）BBSInfoPO类，包名称为com.px1987.webbbs.dao，并实现java.io.Serializable接口（2）添加下面的成员属
37、性private String author; private String title; private int replay; private int hits; private String sendInfoTime; private String content;/private Clob content; private int mailto; private String abstractText; private String lastUpdateTime; private int bbsIconID; private int bbsTypeID; private int bbs
38、TitleID; private String userID; private Integer id;（3）并为这些成员属性提供get/set方法（4）最后产生出下面的代码package com.px1987.webbbs.dao;import java.sql.*;import java.util.*;public class BBSInfoPO implements java.io.Serializableprivate String author;private String title;private int replay;private int hits;private String
39、 sendInfoTime;private String content;/private Clob content;private int mailto;private String abstractText;private String lastUpdateTime;private int bbsIconID;private int bbsTypeID;private int bbsTitleID;private String userID;private int bbsID;public BBSInfoPO()public String getAbstractText() return
40、abstractText;public void setAbstractText(String abstractText) this.abstractText = abstractText;public String getAuthor() return author;public void setAuthor(String author) this.author = author;public int getBbsIconID() return bbsIconID;public void setBbsIconID(int bbsIconID) this.bbsIconID = bbsIcon
41、ID;public int getBbsTitleID() return bbsTitleID;public void setBbsTitleID(int bbsTitleID) this.bbsTitleID = bbsTitleID;public int getBbsTypeID() return bbsTypeID;public void setBbsTypeID(int bbsTypeID) this.bbsTypeID = bbsTypeID;public String getContent() return content;public void setContent(String
42、 content) this.content = content;public int getHits() return hits;public void setHits(int hits) this.hits = hits;public String getLastUpdateTime() return lastUpdateTime;public void setLastUpdateTime(String lastUpdateTime) this.lastUpdateTime = lastUpdateTime;public int getMailto() return mailto;public void setMailto(int mailto) this.mailto = mailto;public int getReplay() return replay;public void setReplay(int replay) this.replay = replay;
