Java数据类型，Hibernate数据类型，标准sql数据类型之间的对应表

 javabean                              *.hbm.xml                                                     数据库表                   

Java数据类型	Hibernate数据类型	标准SQL数据类型 (PS:对于不同的DB可能有所差异)
byte、java.lang.Byte	byte	TINYINT
short、java.lang.Short	short	SMALLINT
int、java.lang.Integer	integer	INGEGER
long、java.lang.Long	long	BIGINT
float、java.lang.Float	float	FLOAT
double、java.lang.Double	double	DOUBLE
java.math.BigDecimal	big_decimal	NUMERIC
char、java.lang.Character	character	CHAR(1)
boolean、java.lang.Boolean	boolean	BIT
java.lang.String	string	VARCHAR
boolean、java.lang.Boolean	yes_no	CHAR(1)('Y'或'N')
boolean、java.lang.Boolean	true_false	CHAR(1)('Y'或'N')
java.util.Date、java.sql.Date	date	DATE
java.util.Date、java.sql.Time	time	TIME
java.util.Date、java.sql.Timestamp	timestamp	TIMESTAMP
java.util.Calendar	calendar	TIMESTAMP
java.util.Calendar	calendar_date	DATE
byte[]	binary	VARBINARY、BLOB
java.lang.String	text	CLOB
java.io.Serializable	serializable	VARBINARY、BLOB
java.sql.Clob	clob	CLOB
java.sql.Blob	blob	BLOB
java.lang.Class	class	VARCHAR
java.util.Locale	locale	VARCHAR
java.util.TimeZone	timezone	VARCHAR
java.util.Currency	currency	VARCHAR

 

贴点源码对比的看看

package my.bean;
public class adv {
private int id;
  private String username;
  private String telphone;
  private String content;
  public adv() {
  }
  public int getId() {
    return id;
  }
  public void setId(int id) {
    this.id = id;
  }
  public String getUsername() {
    return username;
  }
  public void setUsername(String username) {
    this.username = username;
  }
  public String getTelphone() {
    return telphone;
  }
  public void setTelphone(String telphone) {
    this.telphone = telphone;
  }
  public String getContent() {
    return content;
  }
  public void setContent(String content) {
    this.content = content;
  }
}

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping package="my.bean">
 <class
  name="adv"
  table="adv"
 >
  <id
   name="id"
   type="int"
   column="id"
  >
        <generator class="identity"/>
  </id>

  <property
   name="username"
   column="username"
   type="string"
   not-null="false"
  />
     <property
   name="telphone"
   column="telphone"
   type="string"
   not-null="false"
  />
     <property
   name="content"
   column="content"
   not-null="false"
  />
      
 </class>
</hibernate-mapping>