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统一封装json返回结果
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import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.map.annotate.JsonSerialize; import java.io.Serializable;
@JsonSerialize(include = JsonSerialize.Inclusion.NON_NULL)
//保证序列化json的时候，如果是null的对象，key也会消失
public class ServiceResponse<T> implements Serializable {
private int status; //结果状态值
private String msg; //结果信息
private T data; //结果数据 private ServiceResponse(int status){
this.status = status;
} private ServiceResponse(int status, T data){
this.status = status;
this.data = data;
} private ServiceResponse(int status, String msg, T data){
this.status = status;
this.msg = msg;
this.data = data;
} private ServiceResponse(int status, String msg){
this.status = status;
this.msg = msg;
} @JsonIgnore //让其不在json序列化中
public boolean isSuccess(){
return this.status == ResponseCode.SUCCESS.getCode();
} public int getStatus() {
return status;
} public String getMsg() {
return msg;
} public T getData() {
return data;
} public static <T> ServiceResponse<T> createBySuccess(){
return new ServiceResponse<T>(ResponseCode.SUCCESS.getCode());
} public static <T> ServiceResponse<T> createBySuccessMessage(String msg){
return new ServiceResponse<T>(ResponseCode.SUCCESS.getCode(), msg);
} public static <T> ServiceResponse<T> createBySuccess(T data){
return new ServiceResponse<T>(ResponseCode.SUCCESS.getCode(), data);
} public static <T> ServiceResponse<T> createBySuccess(String msg, T data){
return new ServiceResponse<T>(ResponseCode.SUCCESS.getCode(), msg, data);
} public static <T> ServiceResponse<T> createByError(){
return new ServiceResponse<T>(ResponseCode.ERROR.getCode(), ResponseCode.ERROR.getDesc());
} public static <T> ServiceResponse<T> createByErrorMessage(String errorMessage){
return new ServiceResponse<T>(ResponseCode.ERROR.getCode(), errorMessage);
} public static <T> ServiceResponse<T> createByErrorCodeMessage(int errorCode, String errorMessage){
return new ServiceResponse<T>(errorCode, errorMessage);
}
}
使用到的枚举值
/**
* 状态枚举值
*/
public enum ResponseCode { SUCCESS(0,"SUCCESS"),
ERROR(1,"ERROR"),
NEED_LOGIN(10,"NEED_LOGIN"),
ILLEGAL_ARGUMENT(2,"ILLEGAL_ARGUMENT"); private final int code;
private final String desc; ResponseCode(int code, String desc){
this.code = code;
this.desc = desc;
}
public int getCode() {
return code;
}
public String getDesc() {
return desc;
}
}
