【踩坑】RestTemplate报错

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前言

RestTemplate报错

报错

  • 报错：org.springframework.web.client.RestClientException: Could not extract response: no suitable HttpMessageConverter found for response type [class java.lang.Object] and content type [text/html;charset=UTF-8]

原因

  • RestTemplate不支持Content-Type: text/html;charset=UTF-8类型的响应数据格式

解决问题

  • 添加一个Content-Type: text/plan响应数据格式
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RestTemplate restTemplate = new RestTemplate();
MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
mappingJackson2HttpMessageConverter.setSupportedMediaTypes(Arrays.asList(MediaType.TEXT_HTML, MediaType.TEXT_PLAIN));
restTemplate.getMessageConverters().add(mappingJackson2HttpMessageConverter);

报错

  • 报错：java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/util/DefaultPrettyPrinter$Indenter

原因

  • 没有添加Jackson依赖，或Spring依赖版本与Jackson依赖版本冲突

解决问题

  • 添加或更换Jackson依赖
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<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-core</artifactId>
</dependency>
<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-databind</artifactId>
</dependency>
<dependency>
  <groupId>com.fasterxml.jackson.core</groupId>
  <artifactId>jackson-annotations</artifactId>
<version>2.9.0</version>

完成

参考文献

CSDN——TanaStudy
CSDN——An_xiaowu
CSDN——滕青山YYDS