SpringMvc默认消息转化器带来的乱码问题的解决

查看配置默认的消息转化器：

   private ManagedList<?> getMessageConverters(Element element, Object source, ParserContext parserContext) {

      Element convertersElement = DomUtils.getChildElementByTagName(element, "message-converters");

      ManagedList<? super Object> messageConverters = newManagedList<Object>();

      if (convertersElement != null) {

        messageConverters.setSource(source);

        for (Element beanElement : DomUtils.getChildElementsByTagName(convertersElement, "bean", "ref")) {

           Object object = parserContext.getDelegate().parsePropertySubElement(beanElement, null);

           messageConverters.add(object);

        }

      }

      if (convertersElement == null || Boolean.valueOf(convertersElement.getAttribute("register-defaults"))) {

        messageConverters.setSource(source);

      messageConverters.add(createConverterDefinition(ByteArrayHttpMessageConverter.class, source));

        RootBeanDefinition stringConverterDef = createConverterDefinition(StringHttpMessageConverter.class, source);

        stringConverterDef.getPropertyValues().add("writeAcceptCharset", false);

        messageConverters.add(stringConverterDef);

      messageConverters.add(createConverterDefinition(ResourceHttpMessageConverter.class, source));

      messageConverters.add(createConverterDefinition(SourceHttpMessageConverter.class, source));

      messageConverters.add(createConverterDefinition(AllEncompassingFormHttpMessageConverter.class, source));

        if (romePresent) {

        messageConverters.add(createConverterDefinition(AtomFeedHttpMessageConverter.class, source));

        messageConverters.add(createConverterDefinition(RssChannelHttpMessageConverter.class, source));

        }

        if (jackson2XmlPresent) {

           RootBeanDefinition jacksonConverterDef =createConverterDefinition(MappingJackson2XmlHttpMessageConverter.class, source);

           GenericBeanDefinition jacksonFactoryDef =createObjectMapperFactoryDefinition(source);

           jacksonFactoryDef.getPropertyValues().add("createXmlMapper", true);

        jacksonConverterDef.getConstructorArgumentValues().addIndexedArgumentValue(0, jacksonFactoryDef);

           messageConverters.add(jacksonConverterDef);

        }

        else if (jaxb2Present) {

        messageConverters.add(createConverterDefinition(Jaxb2RootElementHttpMessageConverter.class, source));

        }

        if (jackson2Present) {

           RootBeanDefinition jacksonConverterDef =createConverterDefinition(MappingJackson2HttpMessageConverter.class, source);

           GenericBeanDefinition jacksonFactoryDef =createObjectMapperFactoryDefinition(source);

        jacksonConverterDef.getConstructorArgumentValues().addIndexedArgumentValue(0, jacksonFactoryDef);

           messageConverters.add(jacksonConverterDef);

        }

        else if (gsonPresent) {

        messageConverters.add(createConverterDefinition(GsonHttpMessageConverter.class, source));

        }

      }

      return messageConverters;

   }

发现默认的编码格式是iso-8859-1

解决此问题只需要自定义消息转化器的字符编码即可如下

<!-- 注解驱动 -->
<mvc:annotation-driven>
<!-- 防止json乱码,自定义String消息转化器 -->
<mvc:message-converters>
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<constructor-arg index="0" value="UTF-8" />
</bean>
</mvc:message-converters>
</mvc:annotation-driven>