如果字段的值為NULL，如何告訴Jackson在序列化期間忽略它？如果字段的值為NULL，則如何將Jackson配置為在序列化期間忽略字段值。例如：public class SomeClass {
// what jackson annotation causes jackson to skip over this value if it is null but will
// serialize it otherwise
private String someValue; }
3 回答
繁花如伊
TA貢獻(xiàn)2012條經(jīng)驗(yàn) 獲得超12個(gè)贊
ObjectMapper@JsonInclude
mapper.setSerializationInclusion(Include.NON_NULL);
@JsonInclude(Include.NON_NULL)class Foo{
String bar;}@JsonInclude
泛舟湖上清波郎朗
TA貢獻(xiàn)1818條經(jīng)驗(yàn) 獲得超3個(gè)贊
@JsonSerialize
@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)
慕村9548890
TA貢獻(xiàn)1884條經(jīng)驗(yàn) 獲得超4個(gè)贊
例子-fieldOnefieldTwo
public class Foo {
@JsonInclude(JsonInclude.Include.NON_NULL)
private String fieldOne;
private String fieldTwo;}例子-fieldOnefieldTwofieldThree
@JsonInclude(JsonInclude.Include.NON_NULL)public class Foo {
private String fieldOne;
private String fieldTwo;
@JsonInclude(JsonInclude.Include.ALWAYS)
private String fieldThree;}更新
@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)
@JsonInclude(JsonInclude.Include.NON_NULL)
如果這個(gè)更新是有用的，請(qǐng)投ZiglioUK的下面的答案，它指出了較新的杰克遜2注釋之前，我更新我的答案使用它！
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