public class APIResult {

private Integer code;
private String message;
private Object result;

public Integer getCode() {
    return code;
}
public void setCode(Integer code) {
    this.code = code;
}
public String getMessage() {
    return message;
}
public void setMessage(String message) {
    this.message = message;
}
public Object getResult() {
    return result;
}
public void setResult(Object result) {
    this.result = result;
}

}

 map.put("as",null)
 map.put("wed","陈")
    new APIResult(). setResult(map)
    ignoreNull能忽略map中的null么