jackson-code.jar,jackson-mapper.jar 通常用jackson-all-xxx.jar
import org.codehaus.jackson.map.annotate.JsonSerialize;
@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)
public class MyClass {
}
返回json结果，过滤null值
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转载自blog.csdn.net/rhy0619/article/details/80591615
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