Question

我在mysql数据库中有3条记录，这些是

mysql> select name,dob,gender,profession,relationship,dependent from family;
+------+------------+--------+------------+--------------+-----------+
| name | dob        | gender | profession | relationship | dependent |
+------+------------+--------+------------+--------------+-----------+
| XYZ  | 1991-02-10 | MALE   | DEVELOPER  | BROTHER      | TRUE      |
| ABC  | 1991-02-10 | FEMALE | DEVELOPER  | SISTER       | TRUE      |
| DEF  | 1991-02-10 | FEMALE | DEVELOPER  | SISTER       | TRUE      |
+------+------------+--------+------------+--------------+-----------+
3 rows in set (0.00 sec)

当我试图在我的jsp页面中显示这些记录时，下面的代码总是只显示三次第一条记录，

 Family fa=null;
 List members = session.createQuery("FROM Family").list();
 for (Iterator iterator = members.iterator(); iterator.hasNext();){ 
     fa= (Family) iterator.next();
     f[i]=new Family(
                fa.getname(),
                 fa.getdob(),
                    fa.getgender(),
                     fa.getprofession(),
                     fa.getrelationship(),
                     fa.getdependent()
             );
     f[i].setname(fa.getname()); 
     System.out.println(f[i].getname());
     i++;
    fa=null;
 }
 HttpSession ses=request.getSession();
 ses.setAttribute("f",f);
 ses.setAttribute("i", String.valueOf(i));

当我运行此代码时，我得到以下输出

 XYZ
 XYZ
 XYZ

请告诉我这段代码出了什么问题。

我在这里展示了＆family;家庭。＆＃39;代码

 package com.lms.model;

import org.apache.struts.action.ActionForm;

public class Family extends ActionForm
{
int id;
String employee_no;
String name;
String nominee;
String dob;
int age;
String nationality;
String blood_group;
String gender;
String profession;
String relationship;
String dependent;
String medi_claim;
String medi_history;
public Family(){}
public Family(
        String name,
        String dob,
        String gender,
        String profession,
        String relationship,
        String dependent){
    this.name=name;
    this.dob=dob;
    this.gender=gender;
    this.profession=profession;
    this.relationship=relationship;
    this.dependent=dependent;
}
public String getemployee_no()
{
    return employee_no;
}
public void setemployee_no(String str)
{
    employee_no=str;
}
public int getid()
{
    return id;
}
public void setid(int str)
{
    id=str;
}
public String getname()
{
    return name;
}
public void setname(String str)
{
    name=str;
}
public String getnominee()
{
    return nominee;
}
public void setnominee(String str)
{
    nominee=str;
}public String getdob()
{
    return dob;
}
public void setdob(String str)
{
    dob=str;
}public int getage()
{
    return age;
}
public void setage(int str)
{
    age=str;
}public String getnationality()
{
    return nationality;
}
public void setnationality(String str)
{
    nationality=str;
}
public String getblood_group()
{
    return blood_group;
}
public void setblood_group(String str)
{
    blood_group=str;
}public String getgender()
{
    return gender;
}
public void setgender(String str)
{
    gender=str;
}public String getprofession()
{
    return profession;
}
public void setprofession(String str)
{
    profession=str;
}public String getrelationship()
{
    return relationship;
}
public void setrelationship(String str)
{
    relationship=str;
}public String getdependent()
{
    return dependent;
}
public void setdependent(String str)
{
    dependent=str;
}public String getmedi_claim()
{
    return medi_claim;
}
public void setmedi_claim(String str)
{
    medi_claim=str;
}public String getmedi_history()
{
    return medi_history;
}
public void setmedi_history(String str)
{
    medi_history=str;
}
 }

jsp代码是

          <%
    HttpSession ss=request.getSession();
    int i=Integer.parseInt(ss.getAttribute("i").toString());
    Family f[]=(Family[])(ss.getAttribute("f"));
    for(int j=0;j<i;j++)
    {
    %>
    <tr>
        <td><%=f[j].getname()%></td>
        <td><%=f[j].getdob()%></td>
        <td><%=f[j].getgender()%></td>
        <td><%=f[j].getprofession()%></td>
        <td><%=f[j].getrelationship()%></td>
        <td><%=f[j].getdependent()%></td>
        <td>edit</td>
        <td>delete</td>
    </tr>
    <%} %>

仅为家庭pojo的

映射代码是：

    <class name="com.lms.model.Family" table="family">
    <meta attribute="class-description">
        This class contains the details of employee family. 
     </meta>
    <id name="id" type="int" column="id">
        <generator class="native"/>
     </id>
    <property name="employee_no" column="empno" type="string"  />
    <property name="name" column="name" type="string"  />
    <property name="nominee" column="nominated" type="string"  />
    <property name="dob" column="dob" type="string"  />
    <property name="age" column="age" type="int"  />
    <property name="nationality" column="nationality" type="string"  />
    <property name="blood_group" column="blood_group" type="string"  />
    <property name="gender" column="gender" type="string"  />
    <property name="profession" column="profession" type="string"  />
    <property name="relationship" column="relationship" type="string"  />
    <property name="dependent" column="dependent" type="string"  />
    <property name="medi_claim" column="medi_claim" type="string"  />
    <property name="medi_history" column="medi_history" type="string"  />
    </class>

Answer 1

最后我得到了结果。在代码中我忘记在会话中保存id，我更改了代码，当我添加下面的代码

   Family fm = new Family(f.getname(),f.getnominee(),f.getdob(),f.getage (),f.getnationality(), f.getblood_group(),f.getgender(),f.getprofession(),f.getrelationship(), f.getdependent(),f.getmedi_claim(),f.getmedi_history());
   fmID = (Integer) session.save(fm);
 List members = session.createQuery("FROM Family").list();
 for (Iterator iterator = members.iterator(); iterator.hasNext();){ 
     fa= (Family) iterator.next();
     System.out.println(fa.getname());
     f[i]=fa;
     i++;
 }

我得到了结果。非常感谢你的朋友们的指导。

从hibernate查询中获取错误的结果

1 个答案: