SpringMVC 乱码处理

最新推荐文章于 2023-08-20 18:57:08 发布

原创最新推荐文章于 2023-08-20 18:57:08 发布 · 158 阅读

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#java #json #测试

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本文详细介绍了在SpringMVC中使用@Responsebood处理乱码的方法，包括配置spring-mvc.xml进行默认编码设置，以及通过重写BeanPostProcessor等方式实现乱码处理。

SpringMVC @ResponseBody乱码处理：

原理:将StringHttpMessageConverter的默认编码设为UTF-8

方法1(推荐，参考自springside):

配置spring-mvc.xml

<mvc:annotation-driven>
  <mvc:message-converters register-defaults="true">
    <!-- 将StringHttpMessageConverter的默认编码设为UTF-8 -->
    <bean class="org.springframework.http.converter.StringHttpMessageConverter">
      <constructor-arg value="UTF-8" />
    </bean>
  </mvc:message-converters>
</mvc:annotation-driven>

其他方法:

方法2:

HttpServletResponse resp = (HttpServletResponse)response;
resp.setHeader("Cache-Control","no-cache");
resp.setContentType("application/json;charset=UTF-8");
resp.setCharacterEncoding("UTF-8");
PrintWriter writer = resp.getWriter();
writer.write(json);

方法3:

@RequestMapping(value="/test",produces="text/plain;charset=UTF-8") 
@ResponseBody

方法4:

重写BeanPostProcessor，并配置到spring-mvc.xml

public class BeanPostProcessorUtf8 implements BeanPostProcessor {

	public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
		if (bean instanceof StringHttpMessageConverter) {
			MediaType mediaType = new MediaType("text", "plain", Charset.forName("UTF-8"));
			List<MediaType> types = new ArrayList<MediaType>();
			types.add(mediaType);
			((StringHttpMessageConverter) bean).setSupportedMediaTypes(types);
		}
		return bean;
	}

	public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
		return bean;
	}

}

<bean id="beanPostProcessor" class="com.xxx.yyy.BeanPostProcessorUtf8" />