[英]org.hibernate.MappingException: Could not determine type for: at table: for columns: [org.hibernate.mapping.Column(plant)
[英]Could not determine type for: String, at table: STUDENT, for columns: [org.hibernate.mapping.Column(SNAME)]
在我執行此簡單的休眠程序時,如何解決此異常...請幫助我。 我收到此異常:
Exception in thread "main" org.hibernate.MappingException: Could not determine type for: String, at table: STUDENT, for columns: [org.hibernate.mapping.Column(SNAME)]
映射文件:
<?xml version = "1.0" encoding = "utf-8"?>
<hibernate-mapping>
<class name = "Student" table = "STUDENT" >
<meta attribute="Class description">
This contains Student details.
</meta>
<id name="id" type="int" column="id">
<generator class="native"/>
</id>
<property name="name" column="SNAME" type="String"/>
<property name="mNo" column="MNO" type="String"/>
<property name="marks" column="MARKS" type="String"/>
</class>
配置文件:
<?xml version = "1.0" encoding = "utf-8"?>
<hibernate-configuration>
<session-factory>
<!-- <property name="hibernate.dialect">org.hibernate.dialect.MySQLdialect</property> -->
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/firsthibernate</property>
<property name="hibernate.connection.user">root</property>
<property name="hibernate.connection.password">asdf</property>
<mapping resource="Student.hbm.xml"/>
</session-factory>
Pojo課:
public class Student {
private int id;
private String name;
private String mNo;
private String marks;
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 String getmNo() {
return mNo;
}
public void setmNo(String mNo) {
this.mNo = mNo;
}
public String getMarks() {
return marks;
}
public void setMarks(String marks) {
marks = marks;
}
}
測試類別:
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
public class DemoStudent {
public static void main(String[] args) {
Student st=new Student();
st.setId(1);
st.setName("Amit");
st.setmNo("8927070972");
st.setMarks("98%");
Configuration cfg=new Configuration();
cfg.configure();
SessionFactory sf=cfg.buildSessionFactory();
Session s=sf.openSession();
Transaction tr=s.beginTransaction();
tr.begin();
s.save(st);
tr.commit();
}
}
預先感謝...當我執行這個簡單的休眠程序時。 我得到這個,請在我在該程序中出錯的地方提供幫助。
在休眠映射文件中,使用type作為字符串,而不是String。
<property name="name" column="SNAME"
type="string"/>
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