封装下jackson的序列号操作

public static String ConvertToJson(Object obj) throws Exception {    return mapper.writeValueAsString(obj);}public static 
    
      T ConvertToObject(String json, Class
     
       valueType) throws Exception {    return mapper.readValue(json, valueType);}public static 
      
        List
       
         ConvertToArray(String json, Class
        
          valueType) throws Exception {    JavaType javaType = mapper.getTypeFactory().constructParametricType(ArrayList.class, valueType);    List
         
           obj = (List
          
           ) mapper.readValue(json, javaType); return obj;}