我正在帮助我的一位朋友。他正在使用JSF 2.0和mysql创建Web应用程序。

在创建数据库时，他使用了以下查询。

CREATE DATABASE dbName DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;

截止日期网站运行良好。今天，客户尝试输入阿拉伯文字，他们说输出结果很奇怪。我朋友做的是在将数据输入到DB之后，他还在另一页上打印了相同的数据Congratulations, XYZ ABC is added successfully。但是他认为输出为Congratulations, Ù?ظاÙ? تÙ?Ù?Ù?Ø© Ù?تÙ?Ù?Ù? صدÙ?Ù? Ù?Ù?بÙ?ئة is added successfully。我不明白为什么正确设置数据库字符后他会得到这样的信息。

web.xml的 内容如下。

<?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>/faces/*</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            600
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>faces/index.xhtml</welcome-file>
    </welcome-file-list>
    <filter>
        <filter-name>restrict</filter-name>
        <filter-class>com.sac.filter.MyFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>restrict</filter-name>
        <url-pattern>*.xhtml</url-pattern>
    </filter-mapping>
    <filter>
        <filter-name>MyFacesExtensionsFilter</filter-name>
        <filter-class>org.apache.myfaces.webapp.filter.ExtensionsFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>MyFacesExtensionsFilter</filter-name>
        <servlet-name>Faces Servlet</servlet-name>
    </filter-mapping>

    <servlet>
        <servlet-name>DisplayImage</servlet-name>
        <servlet-class>com.sac.databean.DisplayImage</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>DisplayImage</servlet-name>
        <url-pattern>/DisplayImage</url-pattern>
    </servlet-mapping>
    <servlet>
        <servlet-name>SaveMyImage</servlet-name>
        <servlet-class>com.sac.databean.SaveMyImage</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>SaveMyImage</servlet-name>
        <url-pattern>/SaveMyImage</url-pattern>
    </servlet-mapping>

<!-- for not using css and js of default richfaces   -->
    <context-param>
        <param-name>org.richfaces.SKIN</param-name>
        <param-value>plain</param-value>
    </context-param>
    <context-param>
        <param-name>org.richfaces.LoadStyleStrategy</param-name>
        <param-value>None</param-value>
    </context-param>
    <context-param>
        <param-name>org.richfaces.enableControlSkinning</param-name>
        <param-value>false</param-value>
    </context-param>
<!-- for not using css and js of default richfaces   -->

</web-app>

在每个 .xhtml 页面上，他都有<?xml version='1.0' encoding='UTF-8' ?>

如果您还有其他需要，请告诉我。

编辑1

在我的JSF过滤器中，我还添加req.setCharacterEncoding("UTF-8");了doFilter()。我仍然在数据库中???????????

编辑2

在JSF页面中<h:inputText value="#{PersonalInformationDataBean.fullName}">，当我fullName在Java bean
中将值打印为System.out.println("my name while entering is " + fullName);m时，输出为my name while entering is ???????????? ????。

这意味着输入数据时出现问题

有人可以帮忙ODD吗？