java - netbeans 8.1 上的 Tomcat 8 utf-8 配置不起作用

Question

当我将 index.xhtml 输入字段中的数据写入数据库时​​，我得到 ???而不是 ąčę。我已将我的数据库排序规则设置为 utf8_general_ci。我打印出我的值，在 Tomcat 8 输出中我已经看到了 ???所以我想这是tomcats的问题。我已经查看了很多指南和其他 stackoverflow 问题/解决方案，但没有任何帮助。这就是我所做的:在 tomcats server.xml 我有:

<Connector URIEncoding="UTF-8" connectionTimeout="20000" port="8084" protocol="HTTP/1.1" redirectPort="8443"/>

在 tomcats web.xml 我取消注释

 <filter>
        <filter-name>setCharacterEncodingFilter</filter-name>
        <filter-class>org.apache.catalina.filters.SetCharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <async-supported>true</async-supported>
    </filter>

和

 <filter-mapping>
        <filter-name>setCharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

在 netbeans 项目 web.xml 我有

 <filter>
        <filter-name>setCharacterEncodingFilter</filter-name>
        <filter-class>org.apache.catalina.filters.SetCharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>    
        </init-param>    
    </filter>
    <filter-mapping>
        <filter-name>setCharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <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>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>faces/index.xhtml</welcome-file>
    </welcome-file-list>
<jsp-config>
    <jsp-property-group>
        <url-pattern>*.jsp</url-pattern>
        <page-encoding>UTF-8</page-encoding>
    </jsp-property-group>
</jsp-config>   

这是我的过滤器 setCharacterEncodingFilter.java

package Servlets;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;


public class setCharacterEncodingFilter implements Filter {

  @Override
    public void init(FilterConfig filterConfig)
            throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
            throws IOException, ServletException {
        servletRequest.setCharacterEncoding("UTF-8");
        servletResponse.setContentType("text/html; charset=UTF-8");
        filterChain.doFilter(servletRequest, servletResponse);
    }

    @Override
    public void destroy() {

    }
}

在index.xml中我已经覆盖了所有代码

<f:view contentType="text/html" encoding="UTF-8">
<h:head>
<meta http-equiv='Content-Type' content='text/html; charset=UTF-8' />
</h:head>
     *code*
</f:view>

这就是我在阅读所有问题解决方案和指南后所能做的，我做错了什么吗？

Answer 1

我得到了答案。 我编辑了 -&useEncoding=true&characterEncoding=UTF-8-

<property name="javax.persistence.jdbc.url" value="jdbc:mysql:url?zeroDateTimeBehavior=convertToNull&amp;useEncoding=true&amp;characterEncoding=UTF-8"/>

它得到修复