素数面孔中的onRowEdit（RowEditEvent事件）并没有让我获得更新值

时间：2015-03-03 05:35:28

标签： jsf primefaces datatable roweditor

我正在尝试使用带有primefaces的jsf更新行这里是我的每个文件的代码但是当我调试时我没有获得更新值它每次都给我一个旧的值并且保持与旧的相同。

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;
    }
}
}

提前致谢〜：）

2 个答案:

答案 0 :(得分：3)

认为可能是因为数据库值列表

#{userTypeTabMenuBean.userTypeMasters}

总是从数据库中检索，这就是getObject（）返回旧值（实际上是数据库中的值）的原因

更新方法getUserTypeMasters（），如下所示

if (userTypeMasters == null){

        userTypeMasters = userTypeMasterDAO.getAllUserTypes();

}

return userTypeMasters ;

答案 1 :(得分：1)

正确的Primefaces遵循严格的结构，我认为必须使用@PostConstruct注释添加init（）方法。

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

这是解决方案。

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);
        }
    }
}

就是这样〜：）

感谢@Swathi提示。

相关问题
最新问题