Java中list转json字符串

例子：
有一个实体类StudentInfo
放在一个List中，为List infoList;
现在需要把这个infoList 以字符串的形式存起来，示例如下：

@Datapublic class StudentInfo{        private String name;            private String age;}

下面示例代码为将入参infoList转为JSON字符串输出

public class StudentInfoServiceImpl implements StudentInfoService { @Override    public String listTransToString(List<StudentInfo> infoList) {  ObjectMapper objectMapper = new ObjectMapper();try {                        String studentInfoJsonString = objectMapper.writeValueAsString(infoList);       return studentInfoJsonString;                } catch (JsonProcessingException e) {            e.printStackTrace();        }                return null;}}

下面示例代码为将JSON字符串转为List

    @Override    public List<StudentInfo> stringTransToList(String studentInfoJsonString) {               // 创建 ObjectMapper 对象        ObjectMapper objectMapper = new ObjectMapper();        try {List<StudentInfo> infoList = objectMapper.readValue(chatContent, new TypeReference<>() {            });            return infoList;        } catch (JsonProcessingException e) {            e.printStackTrace();        }        return null;    }

来源地址：https://blog.csdn.net/Mico_Cmx/article/details/131571926