解决Spring MVC中文乱码的编码配置

<filter>
    <filter-name>CharacterEncodingFilter</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>forceRequestEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
    <init-param>
      <param-name>forceResponseEncoding</param-name>
      <param-value>true</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>CharacterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

<mvc:annotation-driven >
        <!--设置响应输出字符集-->
        <mvc:message-converters>
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                        <value>text/html;charset=utf-8</value>
                    </list>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

public class MvcInitializer
        extends AbstractAnnotationConfigDispatcherServletInitializer {
    @Override
    protected Class<?>[] getRootConfigClasses() {
//        return null;
        return new Class[] {RootConfiguration.class};
    }
    @Override
    protected Class<?>[] getServletConfigClasses() {
//        return null;
        return new Class[] {MvcConfiguration.class,CommonConfiguration.class};
    }
    @Override
    protected String[] getServletMappings() {
        return new String[] {"/"};
    }
    @Override
    protected Filter[] getServletFilters() {
//        ShallowEtagHeaderFilter shallowEtagHeaderFilter = new ShallowEtagHeaderFilter();
//        shallowEtagHeaderFilter.setWriteWeakETag(true);
        CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter();
        characterEncodingFilter.setEncoding("utf-8");
        characterEncodingFilter.setForceEncoding(true);
        return new Filter[]{characterEncodingFilter};
    }
}

public RequestMappingHandlerAdapter() {
        this.messageConverters = new ArrayList<>(4);
        this.messageConverters.add(new ByteArrayHttpMessageConverter());
        this.messageConverters.add(new StringHttpMessageConverter());
        try {
            this.messageConverters.add(new SourceHttpMessageConverter<>());
        }
        catch (Error err) {
            // Ignore when no TransformerFactory implementation is available
        }
        this.messageConverters.add(new AllEncompassingFormHttpMessageConverter());
    }

public static final Charset DEFAULT_CHARSET = StandardCharsets.ISO_8859_1;

private void initHandlerAdapters(ApplicationContext context) {
        this.handlerAdapters = null;
        if (this.detectAllHandlerAdapters) {
            // Find all HandlerAdapters in the ApplicationContext, including ancestor contexts.
            Map<String, HandlerAdapter> matchingBeans =
                    BeanFactoryUtils.beansOfTypeIncludingAncestors(context, HandlerAdapter.class, true, false);
            if (!matchingBeans.isEmpty()) {
                this.handlerAdapters = new ArrayList<>(matchingBeans.values());
                // We keep HandlerAdapters in sorted order.
                AnnotationAwareOrderComparator.sort(this.handlerAdapters);
            }
        }
        else {
            try {
                HandlerAdapter ha = context.getBean(HANDLER_ADAPTER_BEAN_NAME, HandlerAdapter.class);
                this.handlerAdapters = Collections.singletonList(ha);
            }
            catch (NoSuchBeanDefinitionException ex) {
                // Ignore, we'll add a default HandlerAdapter later.
            }
        }
        // Ensure we have at least some HandlerAdapters, by registering
        // default HandlerAdapters if no other adapters are found.
        if (this.handlerAdapters == null) {
            this.handlerAdapters = getDefaultStrategies(context, HandlerAdapter.class);
            if (logger.isTraceEnabled()) {
                logger.trace("No HandlerAdapters declared for servlet '" + getServletName() +
                        "': using default strategies from DispatcherServlet.properties");
            }
        }
    }

@Configuration
@ComponentScan({"org.example.controller"})
public class MvcConfiguration  {
    @Bean
    public ViewResolver viewResolver() {
        InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
        viewResolver.setPrefix("/WEB-INF/pages/");
        viewResolver.setSuffix(".jsp");
        return viewResolver;
    }
    //定制RequestMappingHandlerAdapter
    @Bean
    public RequestMappingHandlerAdapter handlerAdapter(){
        RequestMappingHandlerAdapter handlerAdapter = new RequestMappingHandlerAdapter();
        List<HttpMessageConverter<?>> messageConverters;
        messageConverters = new ArrayList<>(4);
        messageConverters.add(new ByteArrayHttpMessageConverter());
        StringHttpMessageConverter stringHttpMessageConverter = new StringHttpMessageConverter(Charset.forName("UTF-8"));
        messageConverters.add(stringHttpMessageConverter);
        try {
            messageConverters.add(new SourceHttpMessageConverter<>());
        }
        catch (Error err) {
            // Ignore when no TransformerFactory implementation is available
        }
        messageConverters.add(new AllEncompassingFormHttpMessageConverter());
        handlerAdapter.setMessageConverters(messageConverters);
        return  handlerAdapter;
    }

@Configuration
@EnableWebMvc
@ComponentScan({"org.example.controller"})
public class MvcConfiguration implements WebMvcConfigurer{
    public MvcConfiguration(){
        System.out.println("mvc configuration constructor...");
    }
//    通过@EnableWebMVC配置的时候起作用，
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        for(HttpMessageConverter httpMessageConverter:converters){
            if(StringHttpMessageConverter.class.isAssignableFrom(httpMessageConverter.getClass())){
                ((StringHttpMessageConverter)httpMessageConverter).setDefaultCharset(Charset.forName("UTF-8"));
            }
        }
    }
}