有实体user
public class User {
private int id;
private String name;
private int age;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
} }
怎样在映射类User.hbm.xml中设制age的非空默认值?
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="entity">
<class name="User">
<id name="id">
<generator class="native"/>
</id>
<property name="name" />
<property name="age"/>
</class>
</hibernate-mapping>
public class User {
private int id;
private String name;
private int age;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
} }
怎样在映射类User.hbm.xml中设制age的非空默认值?
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="entity">
<class name="User">
<id name="id">
<generator class="native"/>
</id>
<property name="name" />
<property name="age"/>
</class>
</hibernate-mapping>
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<column name="viewdata" sql-type="number(1) default 0"/>
</property>
同时需在相关字段设置:not-null="false"