onRowEdit（RowEditEvent事件）在素數面沒有讓我更新值

我想更新行使用primefaces這裏的jsf是我的代碼爲每個文件，但是當我調試我沒有得到更新值它給了我一個每一次都保留舊的價值，並堅持它與舊的一樣。onRowEdit（RowEditEvent事件）在素數面沒有讓我更新值

user-type.xhtml

<!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:ui="http://java.sun.com/jsf/facelets" 
    xmlns:h="http://java.sun.com/jsf/html" 
    xmlns:f="http://java.sun.com/jsf/core" 
    xmlns:p="http://primefaces.org/ui"> 
<h:head> 
</h:head> 
<h:body style="align:center;"> 

    <div style="width: 100%"> 
     <h:form id="form"> 
      <div style="float: left; width: 54%;"> 
       <p:growl id="msgs" showDetail="true" /> 
       <p:dataTable id="userTypesTbl" var="varUserType" 
        value="#{userTypeTabMenuBean.userTypeMasters}" editable="true" 
        style="margin-bottom:20px" rowIndexVar="rowIndex"> 
        <f:facet name="header">User Type Managging</f:facet> 

        <p:ajax event="rowEdit" listener="#{userTypeTabMenuBean.onRowEdit}" 
         update=":form:msgs" /> 
        <p:ajax event="rowEditCancel" 
         listener="#{userTypeTabMenuBean.onRowCancel}" update=":form:msgs" /> 

        <p:column headerText="Sr."> 
         #{rowIndex+1}. 
        </p:column> 

        <p:column headerText="Type"> 
         <p:cellEditor> 
          <f:facet name="output"> 
           <h:outputText value="#{varUserType.type}" /> 
          </f:facet> 
          <f:facet name="input"> 
           <p:inputText value="#{varUserType.type}" style="width:100%" 
            label="type" /> 
          </f:facet> 
         </p:cellEditor> 
        </p:column> 
        <p:column> 
         <f:facet name="header">View</f:facet> 
         <p:commandButton update=":form" oncomplete="userTypeDialog.show()" 
          icon="ui-icon-search" title="View"> 
          <f:setPropertyActionListener value="#{userType}" 
           var="#{selectedUserType}" 
           target="#{userTypeTabMenuBean.selectedUserType}" /> 
         </p:commandButton> 
        </p:column> 

        <p:column style="width:32px;"> 
         <f:facet name="header">Edit</f:facet> 
         <p:rowEditor /> 
        </p:column> 

        <p:column style="width:32px;align-items: center;"> 
         <f:facet name="header">Delete</f:facet> 
         <h:commandLink 
          action="#{userTypeTabMenuBean.deleteAction(varUserType)}"> 
          <h:graphicImage library="images" name="delete.png" height="45%" 
           width="50%" /> 
         </h:commandLink> 
        </p:column> 
       </p:dataTable> 
       <ui:debug hotkey="x" /> 

       <p:dialog header="User type detail" widgetVar="userTypeDialog" 
        resizable="false" width="330" showEffect="explode" 
        hideEffect="explode"> 
        <h:panelGrid id="display" columns="2" cellpadding="4"> 
         <h:outputText value="ID : " /> 
         <h:outputText value="#{userTypeTabMenuBean.selectedUserType.id}" /> 
         <h:outputText value="TYPE: " /> 
         <h:outputText value="#{userTypeTabMenuBean.selectedUserType.type}" /> 
        </h:panelGrid> 
       </p:dialog> 
      </div> 
      <div style="float: right; width: 44%;"> 
       <p:panel menuTitle="Add User Type." header="Add User Type."> 
        <h:outputText value="User type *:" /> 
        <p:inputText value="#{userTypeTabMenuBean.userType}" 
         title="Enter User Type.." id="myUserType" 
         style="margin:0px 10px 0px 10px;"></p:inputText> 
        <p:commandButton value="Add Type" 
         action="#{userTypeTabMenuBean.saveAction}" ajax="false"> 
        </p:commandButton> 
       </p:panel> 
      </div> 
     </h:form> 
    </div> 
</h:body> 
</html>

UserTypeTabMenuBean.java

package com.convoy.gpack.managedbean; 

import java.io.Serializable; 
import java.util.List; 

import javax.faces.application.FacesMessage; 
import javax.faces.bean.ManagedBean; 
import javax.faces.bean.SessionScoped; 
import javax.faces.context.FacesContext; 

import org.apache.log4j.Logger; 
import org.primefaces.event.RowEditEvent; 

import com.convoy.gpack.dao.UserTypeMasterDAO; 
import com.convoy.gpack.pack.models.UserTypeMaster; 

@ManagedBean(name = "userTypeTabMenuBean") 
@SessionScoped 
public class UserTypeTabMenuBean implements Serializable { 
private static final long serialVersionUID = 1467465633405172689L; 
private static final Logger logger = Logger 
     .getLogger(UserTypeTabMenuBean.class); 
private List<UserTypeMaster> userTypeMasters; 
private UserTypeMasterDAO userTypeMasterDAO = new UserTypeMasterDAO(); 
private UserTypeMaster selectedUserType; 
private String userType; 

public List<UserTypeMaster> getUserTypeMasters() { 
    userTypeMasters = userTypeMasterDAO.getAllUserTypes(); 
    logger.info("getUserTypeMasters=" + userTypeMasters); 
    return userTypeMasters; 
} 

public String deleteAction(UserTypeMaster userTypeMaster) { 
    logger.info("Deleting the object with id = " + userTypeMaster.getId()); 
    UserTypeMasterDAO userTypeMasterDAO = new UserTypeMasterDAO(); 
    int result = userTypeMasterDAO.deleteUserType(userTypeMaster); 
    userTypeMasters.remove(userTypeMaster); 
    if (result == 1) { 
     FacesMessage msg = new FacesMessage(
       "User type deleted successfuly."); 
     FacesContext.getCurrentInstance().addMessage(null, msg); 
    } else { 
     FacesMessage msg = new FacesMessage("Failed to delete user types."); 
     FacesContext.getCurrentInstance().addMessage(null, msg); 
    } 
    return null; 
} 

public void onRowEdit(RowEditEvent event) { 
    UserTypeMaster userTypeMaster = (UserTypeMaster) event.getObject(); 
    logger.info("UPDATING THE USER TYPE MASTER : " 
      + userTypeMaster.getType()); 
    UserTypeMasterDAO userTypeMasterDAO = new UserTypeMasterDAO(); 
    userTypeMasterDAO.saveOrUpdateUserTypeMaster(userTypeMaster); 
    logger.info("UPDATING THE USER TYPE MASTER : " 
      + userTypeMaster.getType()); 

    FacesMessage msg = new FacesMessage("Edited type ", 
      ((UserTypeMaster) event.getObject()).getType() + ""); 
    FacesContext.getCurrentInstance().addMessage(null, msg); 
} 

public void onRowCancel(RowEditEvent event) { 
    FacesMessage msg = new FacesMessage("Editing Cancelled for ", 
      ((UserTypeMaster) event.getObject()).getType() + ""); 
    FacesContext.getCurrentInstance().addMessage(null, msg); 
} 

public UserTypeMaster getSelectedUserType() { 
    return selectedUserType; 
} 

public void setSelectedUserType(UserTypeMaster selectedUserType) { 
    this.selectedUserType = selectedUserType; 
} 

public String getUserType() { 
    return userType; 
} 

public void setUserType(String userType) { 
    this.userType = userType; 
} 

public void saveAction() { 
    logger.info("Saving the object to database...." + userType); 
    if (userType.trim().length() < 1) { 
     FacesMessage msg = new FacesMessage("Can not save empty user type."); 
     FacesContext.getCurrentInstance().addMessage(null, msg); 
    } 
    UserTypeMasterDAO userTypeMasterDAO = new UserTypeMasterDAO(); 
    UserTypeMaster userTypeMaster = new UserTypeMaster(); 
    userTypeMaster.setType(userType); 
    int result = userTypeMasterDAO 
      .saveOrUpdateUserTypeMaster(userTypeMaster); 
    if (result == 1) { 
     FacesMessage msg = new FacesMessage("User type saved."); 
     FacesContext.getCurrentInstance().addMessage(null, msg); 
    } else { 
     FacesMessage msg = new FacesMessage("Failed to save user type."); 
     FacesContext.getCurrentInstance().addMessage(null, msg); 
    } 
} 
}

UserTypeMasterDAO.java

package com.convoy.gpack.dao; 

import java.io.Serializable; 
import java.util.ArrayList; 
import java.util.List; 

import org.hibernate.Criteria; 
import org.hibernate.Session; 
import org.hibernate.Transaction; 

import com.convoy.gpack.hibernate.util.HibernateUtil; 
import com.convoy.gpack.pack.models.UserTypeMaster; 

public class UserTypeMasterDAO implements Serializable { 

/** 
* 
*/ 
private static final long serialVersionUID = -4005898944892506760L; 

public UserTypeMaster getUserTypeById(long long1) { 

    return null; 
} 

public List<String> getAllUserTypesInString() { 
    try { 
     Session session = HibernateUtil.getSessionFactory().openSession(); 
     Transaction transaction = session.beginTransaction(); 
     Criteria criteria = session.createCriteria(UserTypeMaster.class); 
     @SuppressWarnings("unchecked") 
     List<UserTypeMaster> userTypeMasters = criteria.list(); 
     List<String> userTypeMastersString = new ArrayList<String>(); 
     for (UserTypeMaster userTypeMaster : userTypeMasters) { 
      userTypeMastersString.add(userTypeMaster.getType()); 
     } 
     transaction.commit(); 
     session.close(); 
     return userTypeMastersString; 
    } catch (Exception e) { 
     e.printStackTrace(); 
     return null; 
    } 
} 

public List<UserTypeMaster> getAllUserTypes() { 
    try { 
     Session session = HibernateUtil.getSessionFactory().openSession(); 
     Transaction transaction = session.beginTransaction(); 
     Criteria criteria = session.createCriteria(UserTypeMaster.class); 
     @SuppressWarnings("unchecked") 
     List<UserTypeMaster> userTypeMasters = criteria.list(); 
     transaction.commit(); 
     session.close(); 
     return userTypeMasters; 
    } catch (Exception e) { 
     e.printStackTrace(); 
     return null; 
    } 
} 

public int saveOrUpdateUserTypeMaster(UserTypeMaster userTypeMaster) { 
    try { 
     Session session = HibernateUtil.getSessionFactory().openSession(); 
     Transaction transaction = session.beginTransaction(); 
     userTypeMaster.setType(userTypeMaster.getType().toUpperCase()); 
     session.saveOrUpdate(userTypeMaster); 
     transaction.commit(); 
     session.close(); 
     return 1; 
    } catch (Exception e) { 
     e.printStackTrace(); 
     return -1; 
    } 

} 

public int deleteUserType(UserTypeMaster userTypeMaster) { 
    try { 
     Session session = HibernateUtil.getSessionFactory().openSession(); 
     Transaction transaction = session.beginTransaction(); 
     session.delete(userTypeMaster); 
     transaction.commit(); 
     session.close(); 
     return 1; 
    } catch (Exception e) { 
     e.printStackTrace(); 
     return -1; 
    } 
} 
}

在此先感謝〜:)

來源

2015-03-03 Gopal00005

在這個和一般在互聯網上有幾個職位。檢查這些並回到鏈接，爲什麼每個都不適合你 – Kukeltje 2015-03-03 20:23:36

親愛的@Kukeltje經過長時間的搜索我發佈了這個問題，但最後我得到了@ PostConstruct註釋的線索順便說一句，感謝您的回覆。：P – Gopal00005 2015-03-04 05:32:32

究竟Primefaces遵循嚴格的結構，我認爲這是強制性的添加init（）方法用@PostConstruct註釋。

@PostConstruct 
public void init(){ 
    userTypeMasters = userTypeMasterDAO.getAllUserTypes(); 
}

下面是解決方案。

package com.convoy.gpack.managedbean; 

import java.io.Serializable; 
import java.util.List; 

import javax.annotation.PostConstruct; 
import javax.faces.application.FacesMessage; 
import javax.faces.bean.ManagedBean; 
import javax.faces.bean.SessionScoped; 
import javax.faces.context.FacesContext; 

import org.apache.log4j.Logger; 
import org.primefaces.event.RowEditEvent; 

import com.convoy.gpack.dao.UserTypeMasterDAO; 
import com.convoy.gpack.pack.models.UserTypeMaster; 

@ManagedBean(name = "userTypeTabMenuBean") 
@SessionScoped 
public class UserTypeTabMenuBean implements Serializable { 
    private static final long serialVersionUID = 1467465633405172689L; 
    private static final Logger logger = Logger 
      .getLogger(UserTypeTabMenuBean.class); 
    private List<UserTypeMaster> userTypeMasters; 
    private UserTypeMasterDAO userTypeMasterDAO = new UserTypeMasterDAO(); 
    private UserTypeMaster selectedUserType; 
    private String userType; 

// This is the required method to get the datatable list. 
    @PostConstruct 
    public void init() { 
     userTypeMasters = userTypeMasterDAO.getAllUserTypes(); 
     logger.info("getUserTypeMasters=" + userTypeMasters); 
    } 

    public List<UserTypeMaster> getUserTypeMasters() { 
     return userTypeMasters; 
    } 

    public String deleteAction(UserTypeMaster userTypeMaster) { 
     logger.info("Deleting the object with id = " + userTypeMaster.getId()); 
     UserTypeMasterDAO userTypeMasterDAO = new UserTypeMasterDAO(); 
     int result = userTypeMasterDAO.deleteUserType(userTypeMaster); 
     userTypeMasters.remove(userTypeMaster); 
     if (result == 1) { 
      FacesMessage msg = new FacesMessage(
        "User type deleted successfuly."); 
      FacesContext.getCurrentInstance().addMessage(null, msg); 
     } else { 
      FacesMessage msg = new FacesMessage("Failed to delete user types."); 
      FacesContext.getCurrentInstance().addMessage(null, msg); 
     } 
     return null; 
    } 

    public void onRowEdit(RowEditEvent event) { 
     UserTypeMaster userTypeMaster = (UserTypeMaster) event.getObject(); 
     logger.info("UPDATING THE USER TYPE MASTER : " 
       + userTypeMaster.getType()); 
     UserTypeMasterDAO userTypeMasterDAO = new UserTypeMasterDAO(); 
     userTypeMasterDAO.saveOrUpdateUserTypeMaster(userTypeMaster); 
     logger.info("UPDATING THE USER TYPE MASTER : " 
       + userTypeMaster.getType()); 

     FacesMessage msg = new FacesMessage("Edited type ", 
       ((UserTypeMaster) event.getObject()).getType() + ""); 
     FacesContext.getCurrentInstance().addMessage(null, msg); 
    } 

    public void onRowCancel(RowEditEvent event) { 
     FacesMessage msg = new FacesMessage("Editing Cancelled for ", 
       ((UserTypeMaster) event.getObject()).getType() + ""); 
     FacesContext.getCurrentInstance().addMessage(null, msg); 
    } 

    public UserTypeMaster getSelectedUserType() { 
     return selectedUserType; 
    } 

    public void setSelectedUserType(UserTypeMaster selectedUserType) { 
     this.selectedUserType = selectedUserType; 
    } 

    public String getUserType() { 
     return userType; 
    } 

    public void setUserType(String userType) { 
     this.userType = userType; 
    } 

    public void saveAction() { 
     logger.info("Saving the object to database...." + userType); 
     if (userType.trim().length() < 1) { 
      FacesMessage msg = new FacesMessage("Can not save empty user type."); 
      FacesContext.getCurrentInstance().addMessage(null, msg); 
     } 
     UserTypeMasterDAO userTypeMasterDAO = new UserTypeMasterDAO(); 
     UserTypeMaster userTypeMaster = new UserTypeMaster(); 
     userTypeMaster.setType(userType); 
     int result = userTypeMasterDAO 
       .saveOrUpdateUserTypeMaster(userTypeMaster); 
     if (result == 1) { 
      FacesMessage msg = new FacesMessage("User type saved."); 
      FacesContext.getCurrentInstance().addMessage(null, msg); 
      init(); 
     } else if (result == -2) { 
      FacesMessage msg = new FacesMessage("User type already exist.."); 
      FacesContext.getCurrentInstance().addMessage(null, msg); 
     } else { 
      FacesMessage msg = new FacesMessage("Failed to save user type."); 
      FacesContext.getCurrentInstance().addMessage(null, msg); 
     } 
    } 
}

就是這樣〜:)

感謝@Swathi的提示。

來源

2015-03-04 05:27:50 Gopal00005

你正在初始化init方法中的userTypeMasters，但從來沒有在Controller中使用它。請使用您使用userTypeMasters的View文件更新您的答案。 – Mazy 2017-07-25 08:10:07

薄ķ這可能是因爲數據庫值列表的

#{userTypeTabMenuBean.userTypeMasters}

這總是從數據庫中檢索，這就是爲什麼的getObject（）返回舊值（實際上是從數據庫中的值）

更新的方法getUserTypeMasters （）如下

if (userTypeMasters == null){ 

     userTypeMasters = userTypeMasterDAO.getAllUserTypes(); 

} 

return userTypeMasters ;

來源

2015-03-03 22:13:30 Swathi

+1是@Swathi你太接近答案了，我發佈了關於init（）方法的真正解決方案... – Gopal00005 2015-03-04 05:06:04

onRowEdit（RowEditEvent事件）在​​素數面沒有讓我更新值

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onRowEdit（RowEditEvent事件）在素數面沒有讓我更新值