我从DB使用下面的下面的方法(从spark-java framework方法)返回的数据: get("/data_on_page_load", "application/json", (Request request, Response response) -> {
List<Post> list = Post.findAll(); // NEED TO SERIALIZE THE RE
我想图像保存到数据库中,但我得到的错误: org.codehaus.jackson.map.JsonMappingException: Can not construct instance of java.sql.Blob, problem: abstract types can only be instantiated with additional type information
at [