java web分页查询初试 (一)

ssh2分页查询初试，放着记录学习一下。

entity:student.java:

[html]
package com.zte.entity;

/**
* 数据持久化，跟数据库的的相应的表的字段是对应的。
*
*
*/
public class Student
{

private Integer id;

private String name;

private Integer age;

private Integer score;

private String email;

private String phone;

public String getEmail()
{
return email;
}

public void setEmail(String email)
{
this.email = email;
}

public String getPhone()
{
return phone;
}

public void setPhone(String phone)
{
this.phone = phone;
}

public Integer getId()
{
return id;
}

public void setId(Integer id)
{
this.id = id;
}

public String getName()
{
return name;
}

public void setName(String name)
{
this.name = name;
}

public Integer getAge()
{
return age;
}

public void setAge(Integer age)
{
this.age = age;
}

public Integer getScore()
{
return score;
}

public void setScore(Integer score)
{
this.score = score;
}

}

package com.zte.entity;

/**
* 数据持久化，跟数据库的的相应的表的字段是对应的。
*
*
*/
public class Student
{

private Integer id;

private String name;

private Integer age;

private Integer score;

private String email;

private String phone;

public String getEmail()
{
return email;
}

public void setEmail(String email)
{
this.email = email;
}

public String getPhone()
{
return phone;
}

public void setPhone(String phone)
{
this.phone = phone;
}

public Integer getId()
{
return id;
}

public void setId(Integer id)
{
this.id = id;
}

public String getName()
{
return name;
}

public void setName(String name)
{
this.name = name;
}

public Integer getAge()
{
return age;
}

public void setAge(Integer age)
{
this.age = age;
}

public Integer getScore()
{
return score;
}

public void setScore(Integer score)
{
this.score = score;
}

}
Student.hbm.xml:

[html]
< xml version="1.0" encoding="UTF-8" >

< xml version="1.0" encoding="UTF-8" >

dao层:StudentDao.java

[html]
public interface StudentDao
{
public QueryResult getScrollData(int firstindex, int maxresult); // 获得分页记录
}

public interface StudentDao
{
public QueryResult getScrollData(int firstindex, int maxresult); // 获得分页记录
}
StudentDaoImpl.java:

[html]
public class StudentImpl implements StudentDao
{

private SessionFactory sessionFactory;// 通过spring注入数据持久化工厂(相当于spring帮你设置好了
// 对象，直接通过getter/setter的方式获取)

public SessionFactory getSessionFactory()
{
return sessionFactory;
}

public void setSessionFactory(SessionFactory sessionFactory)
{
this.sessionFactory = sessionFactory;
}
@Override
public QueryResult getScrollData(int firstindex, int maxresult)
{
QueryResult retuslt = new QueryResult();
Query query =
sessionFactory.getCurrentSession().createQuery("from Student");
System.out.println("query---size---before>>>" + query.list().size());
retuslt.setTotalrecord(query.list().size());
query.setFirstResult(firstindex).setMaxResults(maxresult);
System.out.p