1.修改application.xml

```

设置utf-8,防止中文乱码

server.servlet.encoding.charset = UTF-8 server.servlet.encoding.enabled = true server.servlet.encoding.force = true spring.messages.encoding=UTF-8 ```

2.在对应请求方法上添加

@RequestMapping(value = "doLogin", produces = "application/json; charset=utf-8")

3. 覆写extendMessageConverters方法

@Configuration public class CustomMVCConf extends WebMvcConfigurationSupport { 　　 //覆写extendMessageConverters方法即可 @Override protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) { for (HttpMessageConverter<?> converter :converters){ if(converter instanceof StringHttpMessageConverter){ ((StringHttpMessageConverter)converter).setDefaultCharset(StandardCharsets.UTF_8); //将StringHttpMessageConverter改为utf-8 } } super.extendMessageConverters(converters); } }