Question

index.jsp

    <%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Inventory</title>
    </head>
    <body>
        <form action="checkInventory.jsp" method="post">
<table>
    <tr>
        <td colspan="2" align="center"><b>Add the item in Inventory</b></td>
    </tr>
    <tr><td>Item Name</td>
        <td><input name="itemname" maxlength="25" size="50" /></td>
    </tr>
    <tr><td>Description</td>
        <td><textarea rows="5" cols="36" name="description"></textarea></td>
    </tr>
    <tr><td>Quantity:</td>
        <td><input name="quantity" maxlength="4" size="5"/></td>
    </tr>
    <tr><td colspan="2">
            <input type="submit" name="AddToInventory" value="AddToInventory"/>
        </td></tr>
</table>
</form>
    </body>
</html>

inventory.java

package myAPP;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name="inventory")
public class inventory 
{
    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    @Column(name="itemid", unique=true, updatable=false)
    private Integer itemid;
    @Column(name="itemName")
    private String itemName;
    @Column(name="description")
    private String description;
    @Column(name="quantity")
    private Integer quantity;
    @Column(name="addedDate")
    private String addedDate;

    public inventory()
    {

    }

    public Integer getItemID()
    {
        return itemid;
    }
    public void setItemID(Integer itemid)
    {
        this.itemid=itemid;
    }

    public String getItemName()
    {
        return itemName;
    }
    public void setItemName(String itemName)
    {
        this.itemName=itemName;
    }
    public String getDescription()
    {
        return description;
    }
    public void setDescription(String description)
    {
        this.description=description;
    }
    public Integer getQuantity()
    {
        return quantity;
    }
    public void setQuantity(Integer quantity)
    {
        this.quantity=quantity;
    }
    public String getAddedDate()
    {
        return addedDate;
    }
    public void setAddedDate(String addedDate)
    {
        this.addedDate=addedDate;
    }

}

checkInventory.jsp

<%@page import="java.util.Iterator"%>
<%@page import="javax.persistence.Persistence"%>
<%@page import="java.util.List"%>
<%@page import="myAPP.inventory"%>
<%@page import="javax.persistence.EntityTransaction"%>
<%@page import="javax.persistence.EntityManager"%>
<%@page import="javax.persistence.EntityManagerFactory"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<%!
private EntityManagerFactory eMF;
private EntityManager eM;
private EntityTransaction eT;
List<inventory>inv;
%>
<%eMF=Persistence.createEntityManagerFactory("INVJPAPU");
eM=eMF.createEntityManager();

String submit=request.getParameter("AddToInventory");
if(submit!=null&&("AddToInventory").equals(submit))
{
    try
    {
        String itemname=request.getParameter("itemname");
        String description=request.getParameter("description");
        String quantity1=request.getParameter("quantity");
        int quantity=Integer.parseInt(quantity1);
        String addedDate=new java.util.Date().toString();

        inventory inv=new inventory();
        inv.setItemName(itemname);
        inv.setDescription(description);
        inv.setQuantity(quantity);
        inv.setAddedDate(addedDate);
        eT=eM.getTransaction();
        eT.begin();
        eM.persist(inv);
        eT.commit();
    }
    catch(RuntimeException e)
    {
        if(eT!=null)eT.rollback();
        throw e;
    }
    response.sendRedirect("checkInventory.jsp");
}

try
{
    inv=eM.createQuery("SELECT i from Inventory i").getResultList();
}
catch(RuntimeException e)
{
    throw e;
}

eM.close();
%>


<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Inventory</title>
    </head>
    <body>
                    <table border="1"><tr><td colspan="5" align="center">
                                <b><Click<a href="index.jsp"></a>to add items in the inventory</b>
                            </td></tr>
                        <tr><td>Item No</td>
                            <td>Item Name</td>
                            <td Description</td>
                            <td>Quantity</td>
                            <td>Added Date & Time</td>
                        </tr>
                        <%
                        Iterator iterator=inv.iterator();
                        while(iterator.hasNext())
                        {
                        inventory objInv=(inventory)iterator.next();
                        %>

                        <tr><td><b><%=objInv.getItemID()%></b></td>
                            <td><b><%=objInv.getItemName()%></b></td>
                            <td><b><%=objInv.getDescription()%></b></td>
                            <td><b><%=objInv.getQuantity()%></b></td>
                            <td><b><%=objInv.getAddedDate()%></b></td>
                        </tr>
                        <%
                        }
                        %>
                </td></table>
    </body>
</html>

库存表

create table Inventory(itemid int PRIMARY KEY AUTO_INCREMENT, itemName varchar(50), description varchar(200), quantity int(40),addedDate varchar(40));

persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.1" xmlns="http://xmlns.jcp.org/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/persistence http://xmlns.jcp.org/xml/ns/persistence/persistence_2_1.xsd">
  <persistence-unit name="INVJPAPU" transaction-type="RESOURCE_LOCAL">
    <non-jta-data-source>jdbc/inventory</non-jta-data-source>
    <exclude-unlisted-classes>false</exclude-unlisted-classes>
    <properties/>
  </persistence-unit>
</persistence>

我正面临“ jdbc /库存”的查找失败根本原因：

javax.persistence.PersistenceException：异常[EclipseLink-7060] （Eclipse Persistence Services-2.5.2.v20140319-9ad6abd）： org.eclipse.persistence.exceptions.ValidationException异常说明：无法获取数据源[jdbc /库存]。内部异常：javax.naming.NamingException：查找失败的“ jdbc /库存” SerialContext [myEnv = {java.naming.factory.initial = com.sun.enterprise.naming.impl.SerialInitContextFactory， java.naming.factory.state = com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl， java.naming.factory.url.pkgs = com.sun.enterprise.naming} [Root 异常是javax.naming.NameNotFoundException：找不到库存]

Error Image

我已附上上面的错误屏幕截图。请帮助我解决问题。

谢谢！

找不到库存（JSP程序），对“ jdbc /库存”的查找失败

0 个答案: