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    输入字段不更新字段

    2023-09-10 19:35:08 作者：秋裤男神ね

    这是完整的源$ C ​​$ C： http://www.sendspace.com/file/ lwxpyf

    我有一个JSF页面，我解决不了的问题。我有一个用于存储应用程序设置成数据库表中的JSF页面。 这是JSF页面的源代码code：

     ＆LT; XML版本=1.0编码=UTF-8＆GT？;
！＆LT; D​​OCTYPE HTML PUBLIC -  // W3C // DTD XHTML 1.0 Strict标准// ENhttp://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
＆LT; HTML的xmlns =htt​​p://www.w3.org/1999/xhtmlXML：LANG =ENLANG =EN
      的xmlns：H =htt​​p://java.sun.com/jsf/html
      的xmlns：F =htt​​p://java.sun.com/jsf/core
      的xmlns：UI =htt​​p://java.sun.com/jsf/facelets＆GT;
    ＆LT; H：头＆GT;
        ＆LT; UI：插入名=标头＆GT;
            ＆LT;用户界面：包括SRC =header.xhtml/＆GT;
        ＆LT; / UI：插入＆gt;
    ＆LT; / H：头＆GT;
    ＆LT; H：身体GT;

        ＆LT; H1＆GT;＆LT; IMG SRC =资源/ CSS /图像/ icon.png在ALT =NVIDIA.com/＆GT;设置中心＆lt; / H1＆GT;
        ＆LT;！ - 层的按钮的黑色背景 - ＆GT;
        ＆LT; D​​IV ID =工具栏的风格=保证金：0汽车;宽度：1180px;高度：30PX;位置：亲属;背景色：黑色＆GT;
            ＆LT;！ - 包括页面导航 - ＆GT;
            ＆LT; UI：插入NAME =导航＆GT;
                ＆LT;用户界面：包括SRC =Navigation.xhtml/＆GT;
            ＆LT; / UI：插入＆gt;

        ＆LT; / DIV＆GT;

        ＆LT; D​​IV ID =greenBand级=UI状态默认UI的角落allh的风格=的位置是：相对;顶端：35px;左：0px;＆GT;
            ＆LT; H：graphicImage的ALT =应用程序设置的风格=的位置是：相对;顶端：-20px;左：9px;值=资源/图像/ logo_application_settings.png/＆GT;
        ＆LT; / DIV＆GT;
        ＆LT; D​​IV ID =main的风格=保证金：0汽车;宽度：1190px;高度：700像素;位置：绝对的;背景颜色：透明;顶部：105px＆GT;

            ＆LT; D​​IV ID =炫魅的风格=保证金：0汽车;宽度：1190px，高度：500px的;位置：绝对的;背景颜色：透明;顶部：80px＆GT;
                ＆LT; H：形式GT;
                    ＆LT; D​​IV ID =settingsdiv的风格=宽度：550px;高度：400像素;位置：绝对的;背景颜色，R;顶：20像素;左：1px的＆GT;

                        ＆所述; H：panelGrid的列=2＆GT;
                            ＆LT; H：panelGroup中＆gt;用户会话超时＆LT; /小时：panelGroup中＆GT;
                            ＆LT; H：panelGroup中＆GT;
                                ＆LT; H：selectOneMenu用于值=＃{ApplicationController.settings ['SessionTTL']}＆GT;
                                    ＆LT; F：选择信息itemValue =＃{ApplicationController.settings ['SessionTTL']}itemLabel =＃{ApplicationController.settings ['SessionTTL']}/＆GT;
                                    ＆LT; F：选择信息itemValue =二itemLabel =方案二/＆GT;
                                    ＆LT; F：选择信息itemValue =三化itemLabel =选项三/＆GT;
                                    ＆LT; F：选择信息itemValue =自定义itemLabel =定义自定义值/＆GT;
                                    ＆LT; F：AJAX渲染=输入/＆GT;
                                ＆LT; / H：selectOneMenu用于＆GT;＆安培; NBSP;
                                ＆LT; H：panelGroup中的id =输入＆GT;
                                    ＆LT; H：inputText的值=＃{ApplicationController.settings ['SessionTTL']}呈现=＃{ApplicationController.settings ['SessionTTL'] =='定制'}要求=真/＆GT;
                                ＆LT; /小时：panelGroup中＆GT;
                            ＆LT; /小时：panelGroup中＆GT;

                            ＆LT; H：panelGroup中＆GT;允许的最大用户和LT; /小时：panelGroup中＆GT;
                            ＆LT; H：panelGroup中＆GT;
                                ＆LT; H：selectOneMenu用于值=＃{ApplicationController.settings ['MaxUsersActive']}＆GT;
                                    ＆LT; F：选择信息itemValue =＃{ApplicationController.settings ['MaxUsersActive']}itemLabel =＃{ApplicationController.settings ['MaxUsersActive']}/＆GT;
                                    ＆LT; F：选择信息itemValue =二itemLabel =方案二/＆GT;
                                    ＆LT; F：选择信息itemValue =三化itemLabel =选项三/＆GT;
                                    ＆LT; F：选择信息itemValue =自定义itemLabel =定义自定义值/＆GT;
                                    ＆LT; F：AJAX渲染=inputl/＆GT;
                                ＆LT; / H：selectOneMenu用于＆GT;＆安培; NBSP;
                                ＆所述; H：panelGroup中的id =inputl＆GT;
                                    ＆LT; H：inputText的值=＃{ApplicationController.settings ['MaxUsersActive']}呈现=＃{ApplicationController.settings ['MaxUsersActive'] =='定制'}要求=真/＆GT;
                                ＆LT; /小时：panelGroup中＆GT;
                            ＆LT; /小时：panelGroup中＆GT;
                        ＆LT; / H：panelGrid的＆GT;



                    ＆LT; / DIV＆GT;

                    ＆LT; D​​IV ID =settingsonediv的风格=宽度：350像素，高度：400像素;位置：绝对的;背景颜色：透明;顶：20像素;左：x 400像素＆GT;



                    ＆LT; / DIV＆GT;

                    ＆LT; D​​IV ID =settingstwodiv的风格=宽度：150像素，高度：60PX;位置：绝对的;背景颜色：透明;顶：380px;左：800px＆GT;

                        ＆LT; H：的commandButton值=保存设置行动=＃{ApplicationController.updateDBSettings}＆GT;
                            ＆LT; F：AJAX渲染=@表执行=@形与GT;＆LT; / F：AJAX＆GT;
                        ＆LT; / H：的commandButton＆GT;

                    ＆LT; / DIV＆GT;


                ＆LT; /小时：形式GT;
            ＆LT; / DIV＆GT;
        ＆LT; / DIV＆GT;

    ＆LT; / H：身体GT;
＆LT; / HTML＆GT;

    这是管理bean：

     的Bean;
进口javax.enterprise.context.SessionScoped;
//或进口javax.faces.bean.SessionScoped;
进口javax.inject.Named;
/ *包括SQL包* /
进口java.sql.Connection中;
。进口的java.sql preparedStatement;
进口java.sql.ResultSet中;
进口值java.sql.SQLException;
进口的java.util.HashMap;
进口javax.annotation.PostConstruct;
进口javax.sql.DataSource的;
进口javax.annotation.Resource;
进口javax.faces.context.FacesContext;
进口javax.inject.Inject;
进口javax.servlet.http.HttpServletRequest;
进口的javax.servlet.http.HttpSession;
//或进口javax.faces.bean.ManagedBean;

进口org.glassfish.osgicdi.OSGiService;

@命名（ApplicationController中）
@SessionScoped
公共类应用实现Serializable {

    / *该散列映射将被用于存储设置和值* /
    私人的HashMap＆LT;字符串，字符串＆GT; settingsMap = NULL;

    公共应用程序（）{
    }

    / *调用的Oracle JDBC连接驱动程序* /
    @Resource（NAME =JDBC /甲骨文）
    私人数据源DS;


    / *散列地图
     *发送该散列映射的设置和值的JSF页面
     * /
    公众的HashMap＆LT;字符串，字符串＆GT;的getSettings（）{
        返回settingsMap;
    }

    / *获取一个哈希地图与设置和值。该表是genarated权
     *后构造函数初始化。
     * /
    @PostConstruct
    公共无效initSettings（）抛出的SQLException
    {
        settingsMap =新的HashMap＆LT;字符串，字符串＆GT;（）;

        如果（DS == NULL）{
                抛出新的SQLException（无法获取数据源）;
        }
        / *初始化到Oracle的连接* /
        数Connection conn = ds.getConnection（）;

        如果（康涅狄格州== NULL）{
                抛出新的SQLException（无法获取数据库连接）;
        }
        / *在SQL语句中得到的所有设置和值* /
        。preparedStatement PS =康恩prepareStatement（SELECT * FROM GLOBALSETTINGS）;

        尝试
        {
            //从数据库中的数据
            ResultSet的结果= ps.executeQuery（）;
            而（result.next（））
            {
               settingsMap.put（result.getString（SettingName），result.getString（SettingValue））;
            }
        }
        最后
        {
            ps.close（）;
            conn.close（）;
        }
    }

    / * JSF返回更新后的值到HashMap中* /

    / *更新设置的值* /
    公共无效updateDBSettings（）抛出的SQLException {

            字符串SQL_Statement = NULL;

            如果（DS == NULL）抛出新的SQLException（）;
        数Connection conn = ds.getConnection（）;
            如果（康涅狄格州== NULL）抛出新的SQLException（）;

    尝试 {
        conn.setAutoCommit（假）;
        布尔致力于= FALSE;
            尝试 {
                   / *将新设置的值与一个SQL语句* /
                   SQL_Statement =UPDATE GLOBALSETTINGS+
                                        SET \SettingValue \=+
                                          CASE+
                                            当\SettingName \='SessionTTL'呢？+
                                            当\SettingName \='MaxUsersActive'呢？+
                                          END+
                                   WHE​​RE \SettingName \IN（'SessionTTL'，'MaxUsersActive'）;
                   / * Exete THRE SQL语句* /
                   preparedStatement updateQuery =康恩prepareStatement（SQL_Statement）。
                   updateQuery.setString（1，settingsMap.get（SessionTTL））;
                   updateQuery.setString（2，settingsMap.get（MaxUsersActive））;

                   updateQuery.executeQuery（）;
                   conn.commit（）;
                   致力于= TRUE;
               } 最后 {
                   如果conn.rollback（）（承诺！）;
                   }
            }
            最后 {
            / *释放资源的所有SQL查询执行后* /
            conn.close（）;
            }
            / *刷新哈希地图
             *获取再从甲骨文设置
             * /
           initSettings（）;

     }


}
    Excel可否设置第一行不被删除 某一字段输入时自动检查是否日期格式 如2012 01 01 不是则无法输入

    这是我面对的问题：

    当我打开JSF页面我得到这个菜单：

    然后我从菜单中选择自定义的：

    我让旁边的菜单中选择此输入字段：

    然后我从键盘输入自定义值：

    但是，当我点击保存按钮，我得到这个。我可以看到，数据库中的字段被更新，但该值是定制

    当我输入相同的值的两倍，我得到这样的：

    我看来，当我点击自定义。我输入自定义值HashMap中没有更新。很奇怪，当我再这样做了HashMap的更新和值是正确的。我该如何解决这个问题呢？

    最良好的祝愿

    修改的

    我怀疑是JSF版本会导致此问题。这是 faces-config.xml中的含量 

     ＆LT; XML版本=1.0＆GT？;
    ＆LT;脸，配置的xmlns =htt​​p://java.sun.com/xml/ns/javaee
       的xmlns：XSI =htt​​p://www.w3.org/2001/XMLSchema-instance
       XSI：的schemaLocation =htt​​p://java.sun.com/xml/ns/javaee
          http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd
       版本=2.0＆GT;
        ＆LT;管理豆＆GT;
            ＆LT;描述＆GT;注释＆LT; /描述＆GT;
            ＆LT;托管豆名称＆gt;的ApplicationController＆LT; /托管豆名称＆gt;
            ＆LT;管理豆级＆GT; com.DX_57.SM_57.Application＆LT; /托管的bean类＆GT;
            ＆LT;托管豆范围＆GT;的要求和LT; /托管豆范围＆GT;
        ＆LT; /管理豆＆GT;
        ＆LT;管理豆＆GT;
            ＆LT;描述＆GT;注释＆LT; /描述＆GT;
            ＆LT;托管豆名称＆gt;＆DashboardController LT; /托管豆名称＆gt;
            ＆LT;管理豆级＆GT; com.DX_57.SM_57.Dashboard＆LT; /托管的bean类＆GT;
            ＆LT;托管豆范围＆GT;的要求和LT; /托管豆范围＆GT;
        ＆LT; /管理豆＆GT;
        ＆LT;管理豆＆GT;
            ＆LT;描述＆GT;注释＆LT; /描述＆GT;
            ＆LT;托管豆名称＆gt;＆DatabaseController LT; /托管豆名称＆gt;
            ＆LT;管理豆级＆GT; com.DX_57.SM_57.Database＆LT; /托管的bean类＆GT;
            ＆LT;托管豆范围＆GT;的要求和LT; /托管豆范围＆GT;
        ＆LT; /管理豆＆GT;
        ＆LT;管理豆＆GT;
            ＆LT;描述＆GT;注释＆LT; /描述＆GT;
            ＆LT;托管豆名称＆gt;＆GeneralController LT; /托管豆名称＆gt;
            ＆LT;管理豆级＆GT; com.DX_57.SM_57.General＆LT; /托管的bean类＆GT;
            ＆LT;托管豆范围＆GT;的要求和LT; /托管豆范围＆GT;
        ＆LT; /管理豆＆GT;
        ＆LT;管理豆＆GT;
            ＆LT;描述＆GT;注释＆LT; /描述＆GT;
            ＆LT;托管豆名称＆gt;＆GlassfishController LT; /托管豆名称＆gt;
            ＆LT;管理豆级＆GT; com.DX_57.SM_57.Glassfish＆LT; /托管的bean类＆GT;
            ＆LT;托管豆范围＆GT;的要求和LT; /托管豆范围＆GT;
        ＆LT; /管理豆＆GT;
        ＆LT;管理豆＆GT;
            ＆LT;描述＆GT;注释＆LT; /描述＆GT;
            ＆LT;托管豆名称＆gt;＆LinuxController LT; /托管豆名称＆gt;
            ＆LT;管理豆级＆GT; com.DX_57.SM_57.Linux＆LT; /托管的bean类＆GT;
            ＆LT;托管豆范围＆GT;的要求和LT; /托管豆范围＆GT;
        ＆LT; /管理豆＆GT;
        ＆LT;管理豆＆GT;
            ＆LT;描述＆GT;注释＆LT; /描述＆GT;
            ＆LT;托管豆名称＆gt;＆LinuxConfigurationController LT; /托管豆名称＆gt;
            ＆LT;管理豆级＆GT; com.DX_57.SM_57.LinuxConfiguration＆LT; /托管的bean类＆GT;
            ＆LT;托管豆范围＆GT;的要求和LT; /托管豆范围＆GT;
        ＆LT; /管理豆＆GT;
        ＆LT;管理豆＆GT;
            ＆LT;描述＆GT;注释＆LT; /描述＆GT;
            ＆LT;托管豆名称＆gt;＆LogController LT; /托管豆名称＆gt;
            ＆LT;管理豆级＆GT; com.DX_57.SM_57.Log＆LT; /托管的bean类＆GT;
            ＆LT;托管豆范围＆GT;的要求和LT; /托管豆范围＆GT;
        ＆LT; /管理豆＆GT;
        ＆LT;管理豆＆GT;
            ＆LT;描述＆GT;注释＆LT; /描述＆GT;
            ＆LT;托管豆名称＆gt;＆OracleController LT; /托管豆名称＆gt;
            ＆LT;管理豆级＆GT; com.DX_57.SM_57.Oracle＆LT; /托管的bean类＆GT;
            ＆LT;托管豆范围＆GT;的要求和LT; /托管豆范围＆GT;
        ＆LT; /管理豆＆GT;
        ＆LT;管理豆＆GT;
            ＆LT;描述＆GT;注释＆LT; /描述＆GT;
            ＆LT;托管豆名称＆gt;＆UpdatesController LT; /托管豆名称＆gt;
            ＆LT;管理豆级＆GT; com.DX_57.SM_57.Updates＆LT; /托管的bean类＆GT;
            ＆LT;托管豆范围＆GT;的要求和LT; /托管豆范围＆GT;
        ＆LT; /管理豆＆GT;
    ＆LT; /面，配置＆GT;

    这是的beans.xml

    内容 

     ＆LT; XML版本=1.0编码=UTF-8＆GT？;
＆LT;豆类的xmlns =htt​​p://java.sun.com/xml/ns/javaee的xmlns：XSI =htt​​p://www.w3.org/2001/XMLSchema-instanceXSI：的schemaLocation =HTTP： //java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/beans_1_0.xsd">
＆LT; /豆＆GT;

    这是的web.xml

    内容 

     ＆LT; XML版本=1.0编码=UTF-8＆GT？;
＆LT; web-app的版本=3.0的xmlns =htt​​p://java.sun.com/xml/ns/javaee的xmlns：XSI =htt​​p://www.w3.org/2001/XMLSchema-instance XSI：的schemaLocation =htt​​p://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    ＆LT;的context-param＆GT;
        ＆LT;参数 - 名称＆gt;＆javax.faces.PROJECT_STAGE LT; /参数 - 名称＆gt;
        ＆LT;参数值＆GT;发展＆LT; /参数值＆GT;
    ＆LT; /的context-param＆GT;
    ＆LT;的servlet＆GT;
        ＆LT; servlet的名称＆gt;面的Servlet＆LT; / Servlet的名称＆gt;
        ＆LT;的servlet类＆GT; javax.faces.w​​ebapp.FacesServlet＆LT; / Servlet的类＆GT;
        ＆所述;负载上启动→1＆其中; /负载上启动＆GT;
    ＆LT; / servlet的＆GT;
    ＆LT; Servlet映射＆GT;
        ＆LT; servlet的名称＆gt;面的Servlet＆LT; / Servlet的名称＆gt;
        ＆LT; URL模式＆GT; * JSF＆LT; / URL模式＆GT;
    ＆LT; / Servlet映射＆GT;

    ＆LT;欢迎-文件列表＆gt;
        ＆LT;欢迎-文件＆gt;的index.html＆LT; /欢迎-文件＆gt;
    ＆LT; /欢迎-文件列表＆gt;
＆LT; / web-app的＆GT;

    他们应该如何才能使用最新版本的JSF更改？

    编辑2在Firefox 我禁用了JavaScript。我测试了code。事实证明，它的作品，但我一定要点击保存按钮每次：

    我选择自定义，然后单击保存按钮

    当我点击保存按钮自定义字段。

    当我输入自定义的值，然后单击保存按钮字段被更新。

    我想，这是行不通的，因为数据不会发送回从JavaScrips到服务器

    修改3 从萤火虫调试的信息：

    我从菜单中选择自定义的：

     ＆LT;更新ID =！j_idt5：输入＆GT;＆LT; [CDATA [＆LT;跨度ID =j_idt5：输入＆GT;＆LT;输入类型=文本 NAME =j_idt5：j_idt15值=自定义/＆GT;＆LT; / SPAN＆GT;]]＆GT;＆LT; /更新＆GT;

    我输入自定义的值：

     ＆LT; XML版本=1.0编码=UTF-8＆GT？;
＆LT;部分响应＆GT;＆LT;修改＆GT;＆LT;更新ID =j_idt5＆GT;＆LT;！[CDATA [
＆LT;形式ID =j_idt5NAME =j_idt5方法=邮报行动=/ SM_57-1.0-快照/ Application.jsfENCTYPE =应用/的X WWW的形式urlen codeD＆GT ;
＆LT;输入类型=隐藏名称=j_idt5值=j_idt5/＆GT;
＆LT;表＆gt;
＆LT; TBODY＆GT;
＆其中; TR＆GT;
＆LT; TD＆gt;用户会话超时＆LT; / TD＆GT;
＆其中; TD＆GT;＆其中;选择的id =j_idt5：j_idt10名称=j_idt5：j_idt10大小=1的onchange =mojarra.ab（此，事件，'valueChange'，0，'j_idt5：输入'） ＆GT; ＆LT;期权价值=自定义选择=选择＆GT;自定义＆LT; /选项＆GT;
    ＆LT;期权价值=二与GT;办法二：LT; /选项＆GT;
    ＆LT;期权价值=三化与GT;办法三＆LT; /选项＆GT;
    ＆LT;期权价值=自定义选择=选择＆GT;定义自定义值小于/选项＆GT;
＆LT; /选择＆GT;＆LT;跨度ID =j_idt5：输入＆GT;＆LT;输入类型=文本名称=j_idt5：j_idt15值=自定义/＆GT;＆LT; / SPAN＆GT;＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆其中; TR＆GT;
＆LT; TD＆GT;允许的最大用户和LT; / TD＆GT;
＆LT; / TR＆GT;
＆LT; / TBODY＆GT;
＆LT; /表＆gt;
＆LT;输入ID =j_idt5：j_idt18类型=提交名称=j_idt5：j_idt18值=保存设置的onclick =mojarra.ab（本，事件，行动，@的形式，@表'）;返回false/＆GT;
＆LT; /形式GT;]]＆GT;＆LT; /更新＆GT;＆LT;更新id="javax.faces.ViewState"><![CDATA[-8356663926661541536:7758149566419150570]]></update></changes></partial-response>

    我点击保存按钮：

     ＆LT; XML版本=1.0编码=UTF-8＆GT？;
＆LT;部分响应＆GT;＆LT;修改＆GT;＆LT;更新ID =j_idt5＆GT;＆LT;！[CDATA [
＆LT;形式ID =j_idt5NAME =j_idt5方法=邮报行动=/ SM_57-1.0-快照/ Application.jsfENCTYPE =应用/的X WWW的形式urlen codeD＆GT ;
＆LT;输入类型=隐藏名称=j_idt5值=j_idt5/＆GT;
＆LT;表＆gt;
＆LT; TBODY＆GT;
＆其中; TR＆GT;
＆LT; TD＆gt;用户会话超时＆LT; / TD＆GT;
＆其中; TD＆GT;＆其中;选择的id =j_idt5：j_idt10名称=j_idt5：j_idt10大小=1的onchange =mojarra.ab（此，事件，'valueChange'，0，'j_idt5：输入'） ＆GT; ＆LT;期权价值=wdwdew选择=选择＆GT; wdwdew＆LT; /选项＆GT;
    ＆LT;期权价值=二与GT;办法二：LT; /选项＆GT;
    ＆LT;期权价值=三化与GT;办法三＆LT; /选项＆GT;
    ＆LT;期权价值=自定义＆GT;定义自定义值小于/选项＆GT;
＆LT; /选择＆GT;＆LT;跨度ID =j_idt5：输入＆GT;＆LT; / SPAN＆GT;＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆其中; TR＆GT;
＆LT; TD＆GT;允许的最大用户和LT; / TD＆GT;
＆LT; / TR＆GT;
＆LT; / TBODY＆GT;
＆LT; /表＆gt;
＆LT;输入ID =j_idt5：j_idt18类型=提交名称=j_idt5：j_idt18值=保存设置的onclick =mojarra.ab（本，事件，行动，@的形式，@表'）;返回false/＆GT;
＆LT; /形式GT;]]＆GT;＆LT; /更新＆GT;＆LT;更新id="javax.faces.ViewState"><![CDATA[-8356663926661541536:7758149566419150570]]></update></changes></partial-response>

    解决方案

    您已经redefinied在豆类faces-config.xml中。您的托管bean被redefinied为请求范围之一：

    ＆LT;管理豆＆GT;     ＆LT;描述＆GT;注释＆LT; /描述＆GT;     ＆LT;托管豆名称＆gt;的ApplicationController＆LT; /托管豆名称＆gt;     ＆LT;管理豆级＆GT; com.DX_57.SM_57.Application＆LT; /托管的bean类＆GT;     ＆LT;托管豆范围＆GT;的要求和LT; /托管豆范围＆GT; ＆LT; /管理豆＆GT;

    在管理​​bean的配置faces-config.xml中文件有 precedence 在注解。你的的ApplicationController bean是在现实中这样的请求范围的JSF管理的bean，而不是一个会话范围的CDI托管bean一样，你必须通过注解声明。在每一个Ajax请求一个全新的将被创建。在previous要求完成所有变更都遗忘。

    您有2个选项：

    删除从的bean的配置faces-config.xml中。 更改托管bean范围视图（请注意，它就会仍然是JSF是谁管理bean的实例，而不是CDI和CDI没有适用 @ViewScoped 注释）。

    This is the complete source code: http://www.sendspace.com/file/lwxpyf

    I have a problem with a JSF page which I can't solve. I have a JSF page which is used to store application settings into database table. This is the source code of the JSF page:

    <?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"    
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:f="http://java.sun.com/jsf/core"
      xmlns:ui="http://java.sun.com/jsf/facelets">
    <h:head>
        <ui:insert name="header">           
            <ui:include src="header.xhtml"/>         
        </ui:insert>
    </h:head>
    <h:body>

        <h1><img src="resources/css/images/icon.png" alt="NVIDIA.com" /> Settings Center</h1>
        <!-- layer for black background of the buttons -->
        <div id="toolbar" style="margin: 0 auto; width:1180px; height:30px; position:relative;  background-color:black">
            <!-- Include page Navigation -->
            <ui:insert name="Navigation">           
                <ui:include src="Navigation.xhtml"/>         
            </ui:insert>

        </div>  

        <div id="greenBand" class="ui-state-default ui-corner-allh" style="position:relative; top:35px; left:0px;"> 
            <h:graphicImage alt="Application Settings"  style="position:relative; top:-20px; left:9px;"  value="resources/images/logo_application_settings.png" />
        </div>
        <div id="main" style="margin: 0 auto; width:1190px; height:700px; position:absolute;  background-color:transparent; top:105px">

            <div id="mainpage" style="margin: 0 auto; width:1190px; height:500px; position:absolute;  background-color:transparent; top:80px">
                <h:form>
                    <div id="settingsdiv" style="width:550px; height:400px; position:absolute;  background-color:r; top:20px; left:1px">

                        <h:panelGrid columns="2">
                            <h:panelGroup>User Session Timeout</h:panelGroup>
                            <h:panelGroup>
                                <h:selectOneMenu value="#{ApplicationController.settings['SessionTTL']}">
                                    <f:selectItem itemValue="#{ApplicationController.settings['SessionTTL']}" itemLabel="#{ApplicationController.settings['SessionTTL']}" />
                                    <f:selectItem itemValue="two" itemLabel="Option two" />
                                    <f:selectItem itemValue="three" itemLabel="Option three" />
                                    <f:selectItem itemValue="custom" itemLabel="Define custom value" />
                                    <f:ajax render="input" />
                                </h:selectOneMenu>&nbsp;
                                <h:panelGroup id="input">
                                    <h:inputText value="#{ApplicationController.settings['SessionTTL']}" rendered="#{ApplicationController.settings['SessionTTL'] == 'custom'}" required="true" />
                                </h:panelGroup>          
                            </h:panelGroup>

                            <h:panelGroup>Maximum allowed users</h:panelGroup>
                            <h:panelGroup>
                                <h:selectOneMenu value="#{ApplicationController.settings['MaxUsersActive']}">
                                    <f:selectItem itemValue="#{ApplicationController.settings['MaxUsersActive']}" itemLabel="#{ApplicationController.settings['MaxUsersActive']}" />
                                    <f:selectItem itemValue="two" itemLabel="Option two" />
                                    <f:selectItem itemValue="three" itemLabel="Option three" />
                                    <f:selectItem itemValue="custom" itemLabel="Define custom value" />
                                    <f:ajax render="inputl" />
                                </h:selectOneMenu>&nbsp;
                                <h:panelGroup id="inputl">
                                    <h:inputText value="#{ApplicationController.settings['MaxUsersActive']}" rendered="#{ApplicationController.settings['MaxUsersActive'] == 'custom'}" required="true" />
                                </h:panelGroup>
                            </h:panelGroup>                                                                     
                        </h:panelGrid>                         



                    </div>   

                    <div id="settingsonediv" style="width:350px; height:400px; position:absolute;  background-color:transparent; top:20px; left:400px">



                    </div>   

                    <div id="settingstwodiv" style="width:150px; height:60px; position:absolute;  background-color:transparent; top:380px; left:800px">

                        <h:commandButton value="Save Settings" action="#{ApplicationController.updateDBSettings}">
                            <f:ajax render="@form" execute="@form"></f:ajax>
                        </h:commandButton>

                    </div>   


                </h:form> 
            </div>  
        </div>

    </h:body>
</html>

    And this is the managed bean:

    import java.io.Serializable;
import javax.enterprise.context.SessionScoped;
// or import javax.faces.bean.SessionScoped;
import javax.inject.Named;
/* include SQL Packages */
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.HashMap;
import javax.annotation.PostConstruct;
import javax.sql.DataSource;
import javax.annotation.Resource;
import javax.faces.context.FacesContext;
import javax.inject.Inject;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
// or import javax.faces.bean.ManagedBean;   

import org.glassfish.osgicdi.OSGiService;

@Named("ApplicationController")
@SessionScoped
public class Application implements Serializable {

    /* This Hash Map will be used to store setting and value */
    private HashMap<String, String> settingsMap = null;    

    public Application(){     
    }   

    /* Call the Oracle JDBC Connection driver */
    @Resource(name = "jdbc/Oracle")
    private DataSource ds;


    /* Hash Map
     * Send this hash map with the settings and values to the JSF page
     */
    public HashMap<String, String> getsettings(){
        return settingsMap;        
    }

    /* Get a Hash Map with settings and values. The table is genarated right 
     * after the constructor is initialized. 
     */
    @PostConstruct
    public void initSettings() throws SQLException
    {        
        settingsMap = new HashMap<String, String>();

        if(ds == null) {
                throw new SQLException("Can't get data source");
        }
        /* Initialize a connection to Oracle */
        Connection conn = ds.getConnection(); 

        if(conn == null) {
                throw new SQLException("Can't get database connection");
        }
        /* With SQL statement get all settings and values */
        PreparedStatement ps = conn.prepareStatement("SELECT * from GLOBALSETTINGS");

        try
        {
            //get data from database        
            ResultSet result = ps.executeQuery();
            while (result.next())
            {
               settingsMap.put(result.getString("SettingName"), result.getString("SettingValue"));
            }            
        }
        finally
        {
            ps.close();
            conn.close();         
        }        
    }

    /* JSF returns the updated values into the HashMap */

    /* Update Settings Values */
    public void updateDBSettings() throws SQLException {

            String SQL_Statement = null;

            if (ds == null) throw new SQLException();      
        Connection conn = ds.getConnection();
            if (conn == null) throw new SQLException();      

    try {
        conn.setAutoCommit(false);
        boolean committed = false;
            try {  
                   /* Insert the new settings values with one SQL statement */
                   SQL_Statement = "UPDATE GLOBALSETTINGS " +
                                        "SET \"SettingValue\" = " +
                                          "CASE " +
                                            "WHEN \"SettingName\" = 'SessionTTL' THEN ? " +
                                            "WHEN \"SettingName\" = 'MaxUsersActive' THEN ? " +
                                          "END " +
                                   "WHERE \"SettingName\"  IN ('SessionTTL', 'MaxUsersActive')";
                   /* Exete thre SQL statement */
                   PreparedStatement updateQuery = conn.prepareStatement(SQL_Statement);
                   updateQuery.setString(1, settingsMap.get("SessionTTL"));
                   updateQuery.setString(2, settingsMap.get("MaxUsersActive"));

                   updateQuery.executeQuery();                                                         
                   conn.commit();
                   committed = true;
               } finally {
                   if (!committed) conn.rollback();
                   }
            }
            finally {
            /* Release the resource after all SQL queries are executed */
            conn.close();                
            }             
            /* Refresh Hash Map
             * Get again settings from Oracle
             */
           initSettings();

     }    


}

    This is the problem that I face:

    When I open the JSF page I get this menus:

    Then I select custom from the menu:

    I get this input field next to the menu:

    Then I enter custom value from the keyboard:

    But when I click Save button I get this. I can see that the database field is updated but the values is "custom"

    When I enter the same twice value I get this:

    I seems that when I click custom and I enter the custom value the HashMap is not updated. It's strange that when I do it again the HashMap is updated and the value is correct. How I can fix this problem?

    Best Wishes

    EDIT

    I suspect that the JSF version causes this problem. This is the content of the faces-config.xml

     <?xml version="1.0"?>
    <faces-config xmlns="http://java.sun.com/xml/ns/javaee" 
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
          http://java.sun.com/xml/ns/javaee/web-facesconfig_2_0.xsd"
       version="2.0">
        <managed-bean>
            <description>comment</description>
            <managed-bean-name>ApplicationController</managed-bean-name>
            <managed-bean-class>com.DX_57.SM_57.Application</managed-bean-class>    
            <managed-bean-scope>request</managed-bean-scope>        
        </managed-bean>
        <managed-bean>
            <description>comment</description>
            <managed-bean-name>DashboardController</managed-bean-name>
            <managed-bean-class>com.DX_57.SM_57.Dashboard</managed-bean-class>    
            <managed-bean-scope>request</managed-bean-scope>        
        </managed-bean>
        <managed-bean>
            <description>comment</description>
            <managed-bean-name>DatabaseController</managed-bean-name>
            <managed-bean-class>com.DX_57.SM_57.Database</managed-bean-class>    
            <managed-bean-scope>request</managed-bean-scope>        
        </managed-bean>
        <managed-bean>
            <description>comment</description>
            <managed-bean-name>GeneralController</managed-bean-name>
            <managed-bean-class>com.DX_57.SM_57.General</managed-bean-class>    
            <managed-bean-scope>request</managed-bean-scope>        
        </managed-bean>
        <managed-bean>
            <description>comment</description>
            <managed-bean-name>GlassfishController</managed-bean-name>
            <managed-bean-class>com.DX_57.SM_57.Glassfish</managed-bean-class>    
            <managed-bean-scope>request</managed-bean-scope>        
        </managed-bean>
        <managed-bean>
            <description>comment</description>
            <managed-bean-name>LinuxController</managed-bean-name>
            <managed-bean-class>com.DX_57.SM_57.Linux</managed-bean-class>    
            <managed-bean-scope>request</managed-bean-scope>        
        </managed-bean>
        <managed-bean>
            <description>comment</description>
            <managed-bean-name>LinuxConfigurationController</managed-bean-name>
            <managed-bean-class>com.DX_57.SM_57.LinuxConfiguration</managed-bean-class>    
            <managed-bean-scope>request</managed-bean-scope>        
        </managed-bean>
        <managed-bean>
            <description>comment</description>
            <managed-bean-name>LogController</managed-bean-name>
            <managed-bean-class>com.DX_57.SM_57.Log</managed-bean-class>    
            <managed-bean-scope>request</managed-bean-scope>        
        </managed-bean>    
        <managed-bean>
            <description>comment</description>
            <managed-bean-name>OracleController</managed-bean-name>
            <managed-bean-class>com.DX_57.SM_57.Oracle</managed-bean-class>    
            <managed-bean-scope>request</managed-bean-scope>        
        </managed-bean>
        <managed-bean>
            <description>comment</description>
            <managed-bean-name>UpdatesController</managed-bean-name>
            <managed-bean-class>com.DX_57.SM_57.Updates</managed-bean-class>    
            <managed-bean-scope>request</managed-bean-scope>        
        </managed-bean>   
    </faces-config>

    This is the content of beans.xml

    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/beans_1_0.xsd">
</beans>

    This is the content of web.xml

    <?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>*.jsf</url-pattern>
    </servlet-mapping>

    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
    </welcome-file-list>
</web-app>

    How they should be changed in order to use the latest JSF version?

    EDIT 2 I disabled JavaScript in Firefox. I tested the code. It turns out that it works but I have to click Save button every time:

    I choose custom and click Save Button

    When I click the Save button the custom field appears.

    When I enter the custom value and click Save button the field is updated.

    I suppose that it won't work because the data is not send back from the JavaScrips to the server

    EDIT 3 Debug information from firebug:

    I choose from the menu custom:

    <update id="j_idt5:input"><![CDATA[<span id="j_idt5:input"><input type="text" name="j_idt5:j_idt15" value="custom" /></span>]]></update>

    I type custom value:

    <?xml version='1.0' encoding='UTF-8'?>
<partial-response><changes><update id="j_idt5"><![CDATA[
<form id="j_idt5" name="j_idt5" method="post" action="/SM_57-1.0-SNAPSHOT/Application.jsf" enctype="application/x-www-form-urlencoded">
<input type="hidden" name="j_idt5" value="j_idt5" />
<table>
<tbody>
<tr>
<td>User Session Timeout</td>
<td><select id="j_idt5:j_idt10" name="j_idt5:j_idt10" size="1" onchange="mojarra.ab(this,event,'valueChange',0,'j_idt5:input')">    <option value="custom" selected="selected">custom</option>
    <option value="two">Option two</option>
    <option value="three">Option three</option>
    <option value="custom" selected="selected">Define custom value</option>
</select><span id="j_idt5:input"><input type="text" name="j_idt5:j_idt15" value="custom" /></span></td>
</tr>
<tr>
<td>Maximum allowed users</td>
</tr>
</tbody>
</table>
<input id="j_idt5:j_idt18" type="submit" name="j_idt5:j_idt18" value="Save Settings" onclick="mojarra.ab(this,event,'action','@form','@form');return false" />
</form>]]></update><update id="javax.faces.ViewState"><![CDATA[-8356663926661541536:7758149566419150570]]></update></changes></partial-response>

    I click save button:

    <?xml version='1.0' encoding='UTF-8'?>
<partial-response><changes><update id="j_idt5"><![CDATA[
<form id="j_idt5" name="j_idt5" method="post" action="/SM_57-1.0-SNAPSHOT/Application.jsf" enctype="application/x-www-form-urlencoded">
<input type="hidden" name="j_idt5" value="j_idt5" />
<table>
<tbody>
<tr>
<td>User Session Timeout</td>
<td><select id="j_idt5:j_idt10" name="j_idt5:j_idt10" size="1" onchange="mojarra.ab(this,event,'valueChange',0,'j_idt5:input')">    <option value="wdwdew" selected="selected">wdwdew</option>
    <option value="two">Option two</option>
    <option value="three">Option three</option>
    <option value="custom">Define custom value</option>
</select><span id="j_idt5:input"></span></td>
</tr>
<tr>
<td>Maximum allowed users</td>
</tr>
</tbody>
</table>
<input id="j_idt5:j_idt18" type="submit" name="j_idt5:j_idt18" value="Save Settings" onclick="mojarra.ab(this,event,'action','@form','@form');return false" />
</form>]]></update><update id="javax.faces.ViewState"><![CDATA[-8356663926661541536:7758149566419150570]]></update></changes></partial-response>

    解决方案

    You've redefinied the beans in faces-config.xml. Your managed bean is been redefinied as a request scoped one:

    <managed-bean>
    <description>comment</description>
    <managed-bean-name>ApplicationController</managed-bean-name>
    <managed-bean-class>com.DX_57.SM_57.Application</managed-bean-class>    
    <managed-bean-scope>request</managed-bean-scope>        
</managed-bean>

    The managed bean configurations in faces-config.xml file have precedence over the annotations. Your ApplicationController bean is in reality thus a request scoped JSF managed bean, not a session scoped CDI managed bean like as you have declared by annotations. On every single ajax request a brand new one will be created. All changes done in previous requests are "forgotten".

    You have 2 options:

    Remove the bean configuration from faces-config.xml. Change the managed bean scope to view (please note that it will then still be JSF who is managing the bean instance, not CDI and that CDI doesn't have a suitable @ViewScoped annotation).

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