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我在xhtml页面上获取mysql“登录”表数据，然后尝试编辑单行然后更新它。问题是当我单击单行的编辑列时，所有行都变为可编辑。我的XHTML页面的代码是：使用JSF编辑单行mysql
<?xml version="1.0" encoding="ISO-8859-1" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core">
<h:head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Users</title>
<h:outputStylesheet library="css" name="style.css" />
</h:head>
<h:body>
<h1>Users</h1>
<h:form>
<h:dataTable value="#{loginBean.list}" var="list" border="1">
<h:column>
<f:facet name="header">Name</f:facet>
<h:inputText value="#{list.UName}" size="10" rendered="#{list.isEditable}" />
<h:outputText value="#{list.UName}" rendered="#{not list.isEditable}" />
</h:column>
<h:column>
<f:facet name="header">Email</f:facet>
<h:inputText value="#{list.emailAdd}" size="10" rendered="#{list.isEditable}" />
<h:outputText value="#{list.emailAdd}" rendered="#{not list.isEditable}" />
</h:column>
<h:column>
<f:facet name="header">Password</f:facet>
<h:inputText value="#{list.pword}" size="10" rendered="#{list.isEditable}" />
<h:outputText value="#{list.pword}" rendered="#{not list.isEditable}" />
</h:column>
<h:column>
<f:facet name="header">Edit</f:facet>
<h:commandLink value="Edit" action="#{loginBean.editable(list)}"/>
</h:column>
<h:column>
<f:facet name="header">Update</f:facet>
<h:commandLink value="Update" action="#{loginBean.updateAction()}" />
</h:column>
<h:column>
<f:facet name="header">Delete</f:facet>
<h:commandLink value="Delete" action="#{loginBean.deleteAction(list)}" />
</h:column>
</h:dataTable>
</h:form>
</h:body>
</html>
和loginBean类代码：
package com;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.ejb.EJB;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.ManagedProperty;
import javax.faces.bean.ViewScoped;
import javax.persistence.EntityManager;
import entity.Login;
import session.LoginManagerRemote;
/**
* @author asma.fardoos
*
*/
@ManagedBean(name = "loginBean" , eager=true)
@ViewScoped
public class LoginBean implements Serializable {
private static final long serialVersionUID = 1L;
private String emailid;
private String password;
boolean isEditable;
@EJB
LoginManagerRemote loginmanager;
EntityManager em;
List<Login> list=null;
@ManagedProperty(value="#{navigationBean}")
private NavigationBean navigationBean;
public LoginBean(){
}
public String dologin()
{
/**String username = "madiha";
String pass = "madiha";
if (username.equals(emailid) && pass.equals(password)) {
//JOptionPane.showInputDialog("Eggs are not supposed to be green.");
// System.out.print("You are logged IN");
return navigationBean.toWelcome();
}
return navigationBean.tofailure();
*/
System.out.println(">>>> within actionLogin method <<<<");
if (loginmanager.isUserValid(this.emailid, this.password)){
return navigationBean.toWelcome();
}
else
return navigationBean.tofailure();
}
public List<Login> getList() {
System.out.println(">>>> In List method <<<<");
list = new ArrayList<Login>();
list = loginmanager.findAll();
return list;
}
public void setList(List<Login> list) {
this.list = list;
}
public String deleteAction(Login del) {
System.out.println(">>>> I am in delete method <<<<");
loginmanager.delete(del);
return "";
}
public String editable(Login lis)
{System.out.println(">>>> I am in editable method <<<<");
lis.setIsEditable(true);
System.out.println(">>>> I have set editable to true <<<<");
return null;
}
public String editAction(Login lis) {
// LoginManager log = new LoginManager();
//Login test = log.getRecordByID(lis.getId());
loginmanager.Edit(lis);
System.out.println(">>>> I am in editAction method <<<<");
//setIsEditable(true);
return "";
}
public void updateAction() {
// setIsEditable(false);
// Query q = em.createQuery("UPDATE Login SET UName='foziiii' ,emailAdd= 'foziiiii',pword='fozi' WHERE id=21");
// em.persist();
}
public String getEmailid() {
return emailid;
}
public void setEmailid(String emailid) {
this.emailid = emailid;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public void setNavigationBean(NavigationBean navigationBean) {
this.navigationBean = navigationBean;
}
}
和登录实体类，编辑方法是：
@Entity
public class Login implements Serializable {
private static final long serialVersionUID = 1L;
@Id
private int id;
private String emailAdd;
private String pword;
private String UName;
public Login() {
}
public int getId() {
return this.id;
}
public void setId(int id) {
this.id = id;
}
public String getEmailAdd() {
return this.emailAdd;
}
public void setEmailAdd(String emailAdd) {
this.emailAdd = emailAdd;
}
public String getPword() {
return this.pword;
}
public void setPword(String pword) {
this.pword = pword;
}
public String getUName() {
return this.UName;
}
public void setUName(String UName) {
this.UName = UName;
}
@Transient
private boolean isEditable;
public boolean getIsEditable() {
return isEditable;
}
public void setIsEditable(boolean isEditable) {
this.isEditable = isEditable;
}
}
@BalucC我所做的更改，并编辑了问题。请查阅。现在，当我点击编辑链接时，没有任何反应，没有字段可编辑。 – 2014-11-24 10:28:08
您添加了'rowStatePreserved =“true”'..为什么？并请修改您的问题，以便我们可以看到示波器等。我不是BalucC btw .. – 2014-11-24 10:31:45
对不起，我做了更改，请看 – 2014-11-24 10:47:09