RestTemplate亂碼和No HttpMessageConverter for java.util.HashMap and content type “application/json

• 亂碼問題如下所示
  
• 解決方案，設置轉換器

private StringHttpMessageConverter m = new StringHttpMessageConverter(Charset.forName("UTF-8"));
private RestTemplate restTemplate = new RestTemplateBuilder().additionalMessageConverters(m).build();

• 如果要傳遞json數據可能遇到No HttpMessageConverter for java.util.HashMap and content type "application/json
• 需要再改下RestTemplate對象。

    private StringHttpMessageConverter m = new StringHttpMessageConverter(Charset.forName("UTF-8"));
    private RestTemplate restTemplate = new RestTemplateBuilder().additionalMessageConverters(m).additionalMessageConverters(new MappingJackson2HttpMessageConverter()).build();

• 修改后成功，如下圖所示