1：json与list转换
List<SkillCertificationContentVo> contentList = (List<SkillCertificationContentVo>) JSONArray
.parseArray(skillCertification.getContent(),SkillCertificationContentVo.class);
2：通过json进行对象转换
SkillAnswer skillAnswer = JSON.parseObject(JSON.toJSONString(skillAnswerVo), SkillAnswer.class);
3：通过springframework进行对象转换
BeanUtils.copyProperties(skillWorkVo, skillWork);
4：对象转为json字符串
String json = JSON.toJSONString(contentList);
5：对象转为map
Map<String, Object> map = JSON.parseObject(JSON.toJSONString(apiDistributeCacheVo));