<!-- jackson -->
<dependency>
	<groupId>com.fasterxml.jackson.core</groupId>
	<artifactId>jackson-core</artifactId>
	<version>2.2.3</version>
</dependency>
<dependency>
	<groupId>com.fasterxml.jackson.core</groupId>
	<artifactId>jackson-databind</artifactId>
	<version>2.2.3</version>
</dependency>
<dependency>
	<groupId>com.fasterxml.jackson.core</groupId>
	<artifactId>jackson-annotations</artifactId>
	<version>2.2.3</version>
</dependency>
 

在類上新增@JsonInclude(Include.NON_EMPTY)，在javabean to json的序列化過程中，將不序列化值為null或者為""的欄位

@JsonInclude(Include.NON_EMPTY)
public class EntityResponseResults extends BaseResponseResults {
	/** 返回結果 */
    private Object results;
}

Include.Include.ALWAYS 預設 
Include.NON_DEFAULT 屬性為預設值不序列化 
Include.NON_EMPTY 屬性為 空（""） 或者為 null 都不序列化 
Include.NON_NULL 屬性為NULL 不序列化