一、引入依赖

<dependency><groupId>com.squareup.retrofit2</groupId><artifactId>converter-jackson</artifactId><version>2.9.0</version>
</dependency>

二、核心代码

public static String obj2JsonString(Object obj) {if (obj == null) {return null;}try {ObjectMapper objectMapper = new ObjectMapper();String result = objectMapper.writeValueAsString(obj);return result;} catch (JsonProcessingException e) {log.error("转换JSON失败：", e);}return null;
}public static Object str2Obj(String input) {if (StrUtil.isBlank(input)) {return null;}try {ObjectMapper objectMapper = new ObjectMapper();return objectMapper.readValue(input, Object.class);} catch (JsonProcessingException e) {log.error("转换JSON失败：", e);}return null;
}