jackson之TypeReference复杂泛型和首字母大写的json转换

项目有个向外部提供api的接口，采用的Oauth协议，部分json字段存在首字母大写的情况！

好吧，还是代码来得直接：

CallBack.java

public class CallBack <T> implements java.io.Serializable{	private int error;	// 错误号	private T results;  // 返回的实体信息	@Override	public String toString() {		return "CallBack [error=" + error + ", results=" + results.toString() + "]";	}		public int getError() {		return error;	}	public void setError(int error) {		this.error = error;	}	public T getResults() {		return results;	}	public void setResults(T results) {		this.results = results;	}}

UserInfo.java

public class UserInfo implements java.io.Serializable{	@JsonProperty("AppId")	private String AppId;	@JsonProperty("AppKey")	private String AppKey;	@Override	public String toString() {		return "UserInfo [AppId=" + AppId + ", AppKey=" + AppKey + "]";	}	public String getAppId() {		return AppId;	}	public void setAppId(String appId) {		AppId = appId;	}	public String getAppKey() {		return AppKey;	}	public void setAppKey(String appKey) {		AppKey = appKey;	}}

@JsonProperty  用来改变某个成员属性

@JsonIgnore     用来忽略某个属性

@JsonIgnoreProperties(ignoreUnknown=true)     忽略掉Pojo中没有配置的属性

Test.java

public class Test {	public static void main(String[] args) throws Exception {		ObjectMapper mapper = new ObjectMapper();		String json = "{\"error\":0, \"results\":{\"AppId\": \"werewrfasdf\", \"AppKey\":\"wqrfdsafdzsjkfhjadh\"}}";				CallBack<UserInfo> call = mapper.readValue(json, new TypeReference<CallBack<UserInfo>>() {});				System.out.println(call.toString());		System.out.println(call.getResults().toString());	}}

TypeReference可以用来应对复杂的范型！

简单的介绍到这了，祝各位看官身体健康万事如意！