spring 如何使用 org.springframework.web.filter.CharacterEncodingFilter 来纠正字符编码？

how to use org.springframework.web.filter.CharacterEncodingFilter to correct character encoding?

提问by TheOnlyIdiot

I need some help.

我需要帮助。

I placed the code snippet below in my web.xml.

我将下面的代码片段放在我的web.xml.

<filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter </filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
</filter>

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

and in my server.xml:

在我的server.xml：

<Connector connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443" URIEncoding="UTF-8"/>

My jsp pages are encoded as UTF-8and my mysql table is encoded as utf8_general_ci.

我的 jsp 页面被编码为UTF-8，我的 mysql 表被编码为utf8_general_ci.

My problem is that whenever I save a ?it becomes ?.

我的问题是，每当我保存?它时，它就会变成?.

When I tried to manually save ?in the mysql terminal its saving properly. I suspect the problem lies within my server or my program. Please help.

当我尝试?在 mysql 终端中手动保存时，它正确保存。我怀疑问题出在我的服务器或我的程序中。请帮忙。

回答by Hanske1967

I tried successfully with this in web.xml!

我在web.xml!

<filter>
    <filter-name>encodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
        <param-name>encoding</param-name>
        <param-value>UTF-8</param-value>
    </init-param>
    <init-param>
        <param-name>forceEncoding</param-name>
        <param-value>true</param-value>
    </init-param>
</filter>

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

回答by palhares

To work in spring boot you can use

要在 Spring Boot 中工作，您可以使用

@Bean
public FilterRegistrationBean filterRegistrationBean() {
    CharacterEncodingFilter filter = new CharacterEncodingFilter();
    filter.setEncoding("UTF-8");

    FilterRegistrationBean registrationBean = new FilterRegistrationBean();
    registrationBean.setFilter(filter);
    registrationBean.addUrlPatterns("/*");
    return registrationBean;
}

another response

另一个回应

回答by DDK

Make sure you have the following snippet in your jsp

确保您的jsp中有以下代码段

<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" language="java" %>

and also make sure that the encodingFilteris the first filter in web.xmlfile

并确保这encodingFilter是web.xml文件中的第一个过滤器

回答by szaroblekitny

My solution, using Spring (3.2.x) AnnotationConfigWebApplicationContext, based on Spring Framework Reference:

我的解决方案，使用 Spring (3.2.x) AnnotationConfigWebApplicationContext，基于 Spring Framework Reference：

public class StudentApplicationConfig extends AbstractDispatcherServletInitializer {

@Override
protected WebApplicationContext createServletApplicationContext() {

    AnnotationConfigWebApplicationContext dispatcherContext
            = new AnnotationConfigWebApplicationContext();
    dispatcherContext.register(DispatcherConfig.class);
    return dispatcherContext;
}

@Override
protected String[] getServletMappings() {

    return new String[] { "/" };
}

@Override
protected WebApplicationContext createRootApplicationContext() {

    AnnotationConfigWebApplicationContext appContext
            = new AnnotationConfigWebApplicationContext();
    return appContext;
}

@Override
protected Filter[] getServletFilters() {
    Filter[] filters;

    CharacterEncodingFilter encFilter;
    HiddenHttpMethodFilter httpMethodFilter = new HiddenHttpMethodFilter();

    encFilter = new CharacterEncodingFilter();

    encFilter.setEncoding("UTF-8");
    encFilter.setForceEncoding(true);

    filters = new Filter[] {httpMethodFilter, encFilter};
    return filters;
}

回答by Vitali Heinrich

it might be little be late, but it′s better to configure it in tomcat conf/web.xml (or for project in web.xml)

可能有点晚了，但最好在 tomcat conf/web.xml（或 web.xml 中的项目）中配置它

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

See http://wiki.apache.org/tomcat/FAQ/CharacterEncodingor tomcat′s web.xml

参见http://wiki.apache.org/tomcat/FAQ/CharacterEncoding或 tomcat 的web.xml

Or for jetty like this:

或者像这样的码头：

public class StartEmbeddedJetty{

public static void main(String[] args) throws Exception {
    Server server = new Server(8080);
    ServletContextHandler sch = new ServletContextHandler();
    sch.addFilter(CharacterEncodingFilter .class, "/*", EnumSet.of(DispatcherType.REQUEST));
      ...
    server.start();
    server.join();
}

public static class CharacterEncodingFilter implements Filter {
     @Override
     public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        // set encoding to utf-8
        req.setCharacterEncoding("UTF-8");
        res.setCharacterEncoding("UTF-8");
     }

     @Override
     public void init(FilterConfig arg0) throws ServletException {
        /* empty */
     }

     @Override
    public void destroy() {
        /* empty */
    }
   }

}

}