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1、環(huán)境：Hibernate3.3.1Maven3.0.4MySQL5.5.13Myeclipse8.6.1建表語(yǔ)句：DROPTABLEIFEXISTS`t_company`;CREATETABLE`t_company`(`companyId`int(10)unsignedNOTNULLAUTO_INCREMENT,`companyName`varchar(30)NOTNULL,PRIMARYKEY(`companyId`))ENGINE=InnoDBAUTO_INCREMENT=3DEFAULTCH
2、ARSET=gb2312;INSERTINTO`t_company`VALUES('1','Sun');INSERTINTO`t_company`VALUES('2','Apache');DROPTABLEIFEXISTS`t_employee`;CREATETABLE`t_employee`(`employeeId`int(10)unsignedNOTNULLAUTO_INCREMENT,`employeeName`varchar(15)NOTNULL,`cid`int(10)unsignedN
3、OTNULL,PRIMARYKEY(`employeeId`))ENGINE=InnoDBAUTO_INCREMENT=6DEFAULTCHARSET=gb2312;INSERTINTO`t_employee`VALUES('1','Tom','1');INSERTINTO`t_employee`VALUES('2','Summ','1');INSERTINTO`t_employee`VALUES('3','Cat','2');INSERTINTO`t_employee`VALUES('4','V
4、inylon','1');INSERTINTO`t_employee`VALUES('5','Dog','2');目錄結(jié)構(gòu)：Employee.javapackagecom.fancy.po;importjavax.persistence.CascadeType;importjavax.persistence.Entity;importjavax.persistence.FetchType;importjavax.persistence.GeneratedValue;importjavax.pers
5、istence.GenerationType;importjavax.persistence.Id;importjavax.persistence.JoinColumn;importjavax.persistence.ManyToOne;importjavax.persistence.Table;/***-----------------------------------------*@文件:Employee.java*@作者:fancy*@郵箱:fancyzero@yeah.net*@時(shí)間:2
6、012-6-10*@描述:實(shí)體類(lèi)*-----------------------------------------*//***下面只說(shuō)@ManyToOne,如需了解其他注解,*可以參考上一篇：http://www.cnblogs.com/fancyzero/archive/2012/06/10/hibernate-one-to-one-annotation.html*/@Entity@Table(name="t_employee")publicclassEmployee{privateInteg
7、eremployeeId;privateStringemployeeName;privateCompanycompany;@Id@GeneratedValue(strategy=GenerationType.AUTO)publicIntegergetEmployeeId(){returnemployeeId;}/***@ManyToOne：多對(duì)一,cascade：級(jí)聯(lián),請(qǐng)參考上一篇*fetch=FetchType.LAZY,延遲加載策略,如果不想延遲加載可以用FetchType.EAGER*/@M
8、anyToOne(cascade={CascadeType.PERSIST,CascadeType.MERGE,CascadeType.REFRESH},fetch=FetchType.LAZY)@JoinColumn(name="cid")publicCompanygetCompany(){returncompany;}publicStringgetEmployeeName(){returnemployeeName;}publicvoidsetEmployeeId(Integer
