jackson 序列化一个类怎么能生成多种JSON

通过filter过滤字段可以达到这个目的

ObjectMapper mapper = new ObjectMapper();
// Exclude Null Fields
mapper.setSerializationInclusion(Inclusion.NON_NULL);
String[] ignorableFieldNames = { "pins", "user" };
FilterProvider filters = new SimpleFilterProvider()  
        .addFilter("filter Board",SimpleBeanPropertyFilter.serializeAllExcept(ignorableFieldNames));
ObjectWriter writer = mapper.writer(filters);
System.out.println(writer.writeValueAsString(new Board())); 

参考：http://stackoverflow.com/questions/13764280/how-do-i-exclude-fields-with-jackson-not-using-annotations