如何通过,我想使用的显示标记从JSP删除/编辑的动作类在Struts2的行中的值?(How to p

2019-11-01 13:54发布

我想创建编辑,删除在显示标签的链接与Struts2的。 这是我的JSP代码

<%@ page contentType="text/html; charset=UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%@taglib uri="http://displaytag.sf.net" prefix="display" %>
<html>
<head>

    <title>Contact Manager - display tag Example</title>
    <link href="css/style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<display:table  name="contactList" requestURI="" pagesize="10" export="true" cellpadding="1" uid="sr"  cellspacing="1" size="50"
    defaultorder="ascending" sort="list" style="width:850"
     id="row">
            <display:column property="id" title="serial no" sortable="true"   />
            <display:column property="lastName" title="TV Show" sortable="true"   />
            <display:column property="firstName" title="User Name" sortable="true"  />
            <display:column property="emailId" title="Email Id" sortable="true"  />

            <display:column media="html"
    title="Delete"
    style="text-align:center">
    <s:url id="deleteUrl" action="deleteLink">
    <s:param name="id1" value="#attr.row.id" />
    </s:url>
    <s:a href="%{deleteUrl}">
         Delete
    </s:a>
</display:column>

<display:column media="html"
title="edit"
style="text-align:center">
<a href="deleteLink?id=<s:property value="id"/>">edit</a>
</display:column>

             <display:setProperty name="export.excel.filename" value="ActorDetails.xls"/>
            <display:setProperty name="export.pdf.filename" value="ActorDetails.pdf"/>
            <display:setProperty name="export.pdf" value="true" />
        </display:table>



</body>
</html>

这是我的动作类:

    package net.viralpatel.contact.view;

    import java.util.List;

    import net.viralpatel.contact.controller.ContactManager;
    import net.viralpatel.contact.model.Contact;

    import com.opensymphony.xwork2.ActionSupport;


    public class ContactAction extends ActionSupport implements ModelDriven<Contact>,Preparable {

        private static final long serialVersionUID = 9149826260758390091L;

        private Contact contact;
        private List<Contact> contactList;


        private ContactManager linkController;

        public ContactAction() {
            linkController = new ContactManager();
        }



        public String getRecords()
        {
            contactList =linkController.lSist();

            return SUCCESS;
        } 

        public String deleteRecord()
        {
           System.out.println(contact.getId());

            return SUCCESS;
        } 

        public Contact getContact() {
            return contact;
        }

        public List<Contact> getContactList() {
            return contactList;
        }

        public void setContact(Contact contact) {
            this.contact = contact;
        }

        public void setContactList(List<Contact> contactsList) {
            this.contactList = contactsList;
        }


@Override
    public Contact getModel() {

        return contact;
    }

    @Override
    public void prepare() throws Exception {
        // TODO Auto-generated method stub
        contact = new Contact();
    }
    }

如何获取这是我从JSP页面上删除对在ContactAction类的deleteRecord()方法的行中的属性值? 这里的声明

System.out.println("ID IS "+contact.getId());

给出了一个输出:ID为空

请提出了一些解决方案。

谢谢

这是联系豆

package net.viralpatel.contact.model;

import java.io.Serializable;
import java.sql.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;

@Entity
@Table(name="Contacts")
public class Contact implements Serializable{

    private static final long serialVersionUID = -8767337896773261247L;

    private Long id;
    private String firstName;
    private String lastName;
    private String emailId;
    private String cellNo;
    private Date birthDate;
    private String website;

    private Date created;

    @Id
    @GeneratedValue
    @Column(name="id")
    public Long getId() {
        return id;
    }
    @Column(name="firstname")
    public String getFirstName() {
        return firstName;
    }
    @Column(name="lastname")
    public String getLastName() {
        return lastName;
    }
    @Column(name="email_id")
    public String getEmailId() {
        return emailId;
    }
    @Column(name="cell_no")
    public String getCellNo() {
        return cellNo;
    }
    @Column(name="birthdate")
    public Date getBirthDate() {
        return birthDate;
    }
    @Column(name="website")
    public String getWebsite() {
        return website;
    }
    @Column(name="created")
    public Date getCreated() {
        return created;
    }
    public void setId(Long id) {
        this.id = id;
    }
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
    public void setEmailId(String emailId) {
        this.emailId = emailId;
    }
    public void setCellNo(String cellNo) {
        this.cellNo = cellNo;
    }
    public void setBirthDate(Date birthDate) {
        this.birthDate = birthDate;
    }
    public void setCreated(Date created) {
        this.created = created;
    }
    public void setWebsite(String website) {
        this.website = website;
    }
}

Answer 1:

您可以使用

#attr.uidOfYourTable.property

你的情况

<display:column media="html" title="edit" style="text-align:center">
   <a href="deleteLink?id=<s:property value="#attr.sr.id"/>">edit</a>
</display:column>

(留出一个事实,即你的编辑链接指向一个DeleteLink行动:O)



Answer 2:

下面是对文件说,关于显示:表标签:

ID:请参见 “UID”。

UID:用来标识该表的唯一ID。 代表当前行的目的也加入到pageContext中以这个名字,这样就可以使用$ {} UID引用它在塔主体 。 您还可以使用uid_rowNum来指代当前行号。 在同一页面中的两个表不能有相同的ID(分页和排序都将影响)。 如果没有指定“htmlId”相同的值将被用于所生成的表格的HTML标识。

(重点煤矿)

之间因此选择iduid (不指定两次ID作为你正在做)在你的标签,而不是同时使用,然后(假设你保持UID),使用$ {SR}指当前元素:

<s:param name="id1" value="${sr.id}" />


Answer 3:

此处,答案是我们可以使用<s:bean>实例化豆类,然后<s:param>充当setter方法,其值可以在bean类联系的使用动作类getter方法检索

<display:column media="html"
    title="Delete"
    style="text-align:center">
    <s:url id="deleteUrl" action="deleteLink">
    <s:bean name="net.viralpatel.contact.model.Contact"></s:bean>
    <s:param name="id" value="#attr.row.id"></s:param>
    <s:param name="firstName" value="#attr.row.firstName"></s:param>
    </s:url>
    <s:a href="%{deleteUrl}">
         Delete
    </s:a>
</display:column>


Answer 4:

你可以这样写:

     <display:column property="status" title="Status" sortable="true" paramId="aid" paramProperty="aid" href="/MsgSystem/adminread" />


文章来源: How to pass the values in the row that i want to delete/edit to the action class from jsp in struts2 using display tag?