pro_mvb
سه شنبه 28 آذر 1391, 17:47 عصر
این پیج Jsp رو که اجرا میکنم
<form name="showAll">
<%
Data data=new Data();
Crud crud=new Crud();
List list =crud.select();
for(int i=0;i<=list.size();i++){
Object[] o= (Object[])list.get(i);
out.print("name is:"+o[0]);%>
<br><%
out.print("price is:"+o[1]);
%>
<br>
<% out.print("desc is:"+o[2]); } %>
</form>
این ارور رو میده:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /select.jsp at line 21
18: Crud crud=new Crud();
19: List list =crud.select();
20: for(int i=0;i<=list.size();i++){
21: Object[] o= (Object[])list.get(i);
22: out.print("name is:"+o[0]);%>
23: <br><%
24: out.print("price is:"+o[1]);
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handle JspException(JspServletWrapper.java:567)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:471)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:389)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:333)
javax.servlet.http.HttpServlet.service(HttpServlet .java:722)
org.netbeans.modules.web.monitor.server.MonitorFil ter.doFilter(MonitorFilter.java:393)
root cause
java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 3
java.util.Vector.get(Vector.java:744)
org.apache.jsp.select_jsp._jspService(select_jsp.j ava:86)
org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet .java:722)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:433)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:389)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:333)
javax.servlet.http.HttpServlet.service(HttpServlet .java:722)
org.netbeans.modules.web.monitor.server.MonitorFil ter.doFilter(MonitorFilter.java:393)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.22 logs.
Apache Tomcat/7.0.22
دردش چیه؟
اینم بقیه کلاس ها اگرنیازه:
package ir.acm.org.entity;
import javax.persistence.*;
@Entity
@Table(name="product")
public class Data {
@Id @Column(name="ID")
private int id;
@Column(name="name")
private String name;
@Column(name="description")
private String description;
@Column (name="price")
private int price;
public void setID(int id){
this.id=id;
}
public int getID(){
return id;
}
public void setName(String name){
this.name=name;
}
public String getName(){
return name;
}
public void setDescription(String desc){
this.description=desc;
}
public String getDescription(){
return description;
}
public void setPrice(int price){
this.price=price;
}
public int getPrice(){
return price;
}
}
و
package ir.acm.org.controller;
import javax.persistence.*;
import ir.acm.org.entity.Data;
import java.util.List;
public class Crud {
private EntityManager em;
private Data data;
public Crud(){
EntityManagerFactory emf= Persistence.createEntityManagerFactory("myJPA");
this.em=emf.createEntityManager();
}
public List select(){
List list=null;
Query q=em.createQuery("select data.name , data.price , data.description , data.id from Data data");
list=q.getResultList();
return list;
}
}
<form name="showAll">
<%
Data data=new Data();
Crud crud=new Crud();
List list =crud.select();
for(int i=0;i<=list.size();i++){
Object[] o= (Object[])list.get(i);
out.print("name is:"+o[0]);%>
<br><%
out.print("price is:"+o[1]);
%>
<br>
<% out.print("desc is:"+o[2]); } %>
</form>
این ارور رو میده:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /select.jsp at line 21
18: Crud crud=new Crud();
19: List list =crud.select();
20: for(int i=0;i<=list.size();i++){
21: Object[] o= (Object[])list.get(i);
22: out.print("name is:"+o[0]);%>
23: <br><%
24: out.print("price is:"+o[1]);
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handle JspException(JspServletWrapper.java:567)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:471)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:389)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:333)
javax.servlet.http.HttpServlet.service(HttpServlet .java:722)
org.netbeans.modules.web.monitor.server.MonitorFil ter.doFilter(MonitorFilter.java:393)
root cause
java.lang.ArrayIndexOutOfBoundsException: Array index out of range: 3
java.util.Vector.get(Vector.java:744)
org.apache.jsp.select_jsp._jspService(select_jsp.j ava:86)
org.apache.jasper.runtime.HttpJspBase.service(Http JspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet .java:722)
org.apache.jasper.servlet.JspServletWrapper.servic e(JspServletWrapper.java:433)
org.apache.jasper.servlet.JspServlet.serviceJspFil e(JspServlet.java:389)
org.apache.jasper.servlet.JspServlet.service(JspSe rvlet.java:333)
javax.servlet.http.HttpServlet.service(HttpServlet .java:722)
org.netbeans.modules.web.monitor.server.MonitorFil ter.doFilter(MonitorFilter.java:393)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.22 logs.
Apache Tomcat/7.0.22
دردش چیه؟
اینم بقیه کلاس ها اگرنیازه:
package ir.acm.org.entity;
import javax.persistence.*;
@Entity
@Table(name="product")
public class Data {
@Id @Column(name="ID")
private int id;
@Column(name="name")
private String name;
@Column(name="description")
private String description;
@Column (name="price")
private int price;
public void setID(int id){
this.id=id;
}
public int getID(){
return id;
}
public void setName(String name){
this.name=name;
}
public String getName(){
return name;
}
public void setDescription(String desc){
this.description=desc;
}
public String getDescription(){
return description;
}
public void setPrice(int price){
this.price=price;
}
public int getPrice(){
return price;
}
}
و
package ir.acm.org.controller;
import javax.persistence.*;
import ir.acm.org.entity.Data;
import java.util.List;
public class Crud {
private EntityManager em;
private Data data;
public Crud(){
EntityManagerFactory emf= Persistence.createEntityManagerFactory("myJPA");
this.em=emf.createEntityManager();
}
public List select(){
List list=null;
Query q=em.createQuery("select data.name , data.price , data.description , data.id from Data data");
list=q.getResultList();
return list;
}
}