Question

我正在尝试使用Omnifaces实现ViewScoped CDI bean。使用jsf页面中的ajax调用使用搜索结果填充listface数据表的Bean方法。如果bean范围设置为session，则一切正常。当我尝试将范围设置为Omnifaces ViewScope时，容器开始多次创建和销毁bean，没有任何理由。这是bean代码：

...
import javax.inject.Named;
import org.omnifaces.cdi.ViewScoped;

@Named
@ViewScoped
public class FindClientBean implements Serializable {

@Inject
private ClientDAO clientDAO;    
@NotNull(message="Search string cannot be empty")   
private String searchString;
private List<Client> resultList;    

@PostConstruct
public void init() {
    System.out.println("init");
}

@PreDestroy
public void end() {
    System.out.println("end");
}

public void findClient() {
    System.out.println("method");
    resultList = clientDAO.findClientByNameOrLastnamePart(searchString);
}

//Getters and setters..    

}

示例输出（一个方法调用有更多的内部和结尾，我跳过了它们）：

01:51:50,044 INFO  [stdout] (http-localhost-127.0.0.1-9090-5) init

01:51:50,044 INFO  [stdout] (http-localhost-127.0.0.1-9090-4) init

01:51:50,044 INFO  [stdout] (http-localhost-127.0.0.1-9090-5) end

01:51:50,045 INFO  [stdout] (http-localhost-127.0.0.1-9090-4) end

01:51:50,045 INFO  [stdout] (http-localhost-127.0.0.1-9090-5) init

01:51:50,045 INFO  [stdout] (http-localhost-127.0.0.1-9090-4) init

01:51:50,046 INFO  [stdout] (http-localhost-127.0.0.1-9090-5) end

01:51:50,046 INFO  [stdout] (http-localhost-127.0.0.1-9090-4) method

01:51:50,047 INFO  [stdout] (http-localhost-127.0.0.1-9090-5) init

01:51:50,047 INFO  [stdout] (http-localhost-127.0.0.1-9090-5) end

01:51:50,048 INFO  [stdout] (http-localhost-127.0.0.1-9090-5) init

01:51:50,048 INFO  [stdout] (http-localhost-127.0.0.1-9090-5) end

01:51:50,049 INFO  [stdout] (http-localhost-127.0.0.1-9090-5) init

01:51:50,049 INFO  [stdout] (http-localhost-127.0.0.1-9090-5) end

它可以是什么？没有找到相关问题。我的配置：JBoss AS 7.1，Omnifaces 1.6.3，Primefaces 4.0

Answer 1

我遇到了同样的问题。它对我不起作用的原因是，在我的项目属性中 - ＆gt; Project Facets是3.0版的动态Web项目

但在web.xml中项目保存为2.5

所以我只是将2.5改为3.0看起来像这样：

<?php  

    $username = "some username";
    $password = "some password";
    $hostname = "localhost";
    $databasename = "some database";

    //connection to the database
        $dbhandle = mysql_connect($hostname, $username, $password) 
        or die("Unable to connect to MySQL");
        @mysqli_select_db($databasename,$dbhandle);

    //select a database to work with
        $selected = mysql_select_db("mydeos_calendar",$dbhandle) 
        or die("Could not select mydeos_calendar");

    //execute the SQL query and return records
        $result = mysql_query("SELECT * FROM appointments ");
        $num=mysql_numrows($result);

    mysql_close();

    echo"<br><b><center>All Appointments</center></b><br><br>";

    // see if any rows were returned 
        if (mysql_num_rows($result) > 0) { 

    // print them one after another 
        echo "<table cellpadding=10 cellspacing=3 border=1 class=sortable>"; 
        echo "<tr><th>Date/Time</th><th>LEP</th> <th>Language</th> <th>Insurance</th><th>Nature</th><th>Duration</th><th>With</th><th>Vendor</th><th>Status</th><th>Appointment Type</th><th>Actions</th></tr>"; 
            while($row = mysql_fetch_row($result)) { 
    require "appointmentrows.php";

        echo '<td><a href="something">Edit</a>&nbsp;|&nbsp;<a href="something">Delete</a></td>';
        echo "</tr>"; } 
            echo "</table>"; } 
        else { 

    // print status message 
    echo "No Appointments Found!"; 
    } 

    $i=0;
    while ($i < $num) { 

    $appointment=mysql_result($result,$i,"appointment");
    $nature=mysql_result($result,$i,"nature");
    $duration=mysql_result($result,$i,"duration");
    $status=mysql_result($result,$i,"status");
    $language=mysql_result($result,$i,"language");
    $lep=mysql_result($result,$i,"lep");
    $vendor=mysql_result($result,$i,"vendor");
    $insurance=mysql_result($result,$i,"insurance");
    $client=mysql_result($result,$i,"client");
    $invoiceformat=mysql_result($result,$i,"invoiceformat");
    $appointmenttype=mysql_result($result,$i,"appointmenttype");
    $i++;
    }

?>

Omnifaces viewscoped bean一遍又一遍地重新创建

1 个答案: