Jackson json 处理全大写或不规范的JSON

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面对不遵守驼峰命名规则的接口咋办？当然首先要吐槽一下，不过接口是别人定的，虽然看着不爽但还是得去适配，比如cardNumber,他返回的叫{CARDNUMBER:''}。

通过对API的研究可以通过@JsonProperty以及@JsonAutoDetect来实现。

先看代码

@JsonAutoDetect(JsonMethod.FIELD)public class MemberApiParameter implements Serializable {  private static final long serialVersionUID = 1L;  /** 姓名 **/  @JsonProperty("NAME")  private String name;  /** 性别 **/  @JsonProperty("SEX")  private String sex;  public String getName() {    return name;  }  public void setName(String name) {    this.name = name;  }  public String getSex() {    return sex;  }  public void setSex(String sex) {    this.sex = sex;  }}

@JsonProperty("NAME")顾名思义，就是显示指定字段的别名，不管是输入还是输出都是这个名字。

@JsonAutoDetect(JsonMethod.FIELD)这个的意思是指解析字段，如果不这样设置，有兴趣的朋友可以试一下，会输出两套东西，类似{name:'',NAME:''}，也就是说字段和getter方法都解析了，所以需要制定只解析字段名，忽略方法。还有一种方法就是需要一行行的在所有getter上加上@JsonIgnore，如果字段多就累死了。

JsonMethod的API说明：

Enum Constant Summary

ALL

This pseudo-type indicates that all of real types are included

CREATOR

Creators are constructors and (static) factory methods used to construct POJO instances for deserialization

FIELD

Field refers to fields of regular Java objects.

GETTER

Getters are methods used to get a POJO field value for serialization, or, under certain conditions also for de-serialization.

IS_GETTER

"Is getters" are getter-like methods that are named "isXxx" (instead of "getXxx" for getters) and return boolean value (either primitive, or Boolean).

NONE

This pseudo-type indicates that none of real types is included

SETTER

Setters are methods used to set a POJO value for deserialization.

如果有更好的更加通用的办法欢迎留言补充。

转自：http://www.tuicool.com/articles/aaqMfa7

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