Java转换为JSON首字母大写

最近调接口，入参JSON首字母需大写，步骤如下：

1.

package com.ceair.pojo;

import java.io.Serializable;
import java.util.List;

import org.codehaus.jackson.annotate.JsonAutoDetect;
import org.codehaus.jackson.annotate.JsonMethod;
import org.codehaus.jackson.annotate.JsonProperty;
import org.codehaus.jackson.map.annotate.JsonSerialize;
@JsonAutoDetect(JsonMethod.FIELD)
@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)
public class FlightBookingRequest implements Serializable {
/**
*
*/
private static final long serialVersionUID = -7600859899586249635L;
@JsonProperty("Account")
private String account ; 		//B2T用户名

@JsonProperty("AgentName")
private String AgentName; 		//机构名称

@JsonProperty("ContactName")
private String ContactName; 	//联系人姓名

@JsonProperty("ContactEmail")
private String ContactEmail; 	//联系人邮箱

@JsonProperty("ContactPhone")
private String ContactPhone; 	//联系人电话

@JsonProperty("PassengerPhone")
private String PassengerPhone; 	//旅客联系电话

@JsonProperty("ExtRefNo")
private String ExtRefNo; 		//外部订单

@JsonProperty("BookingChannel")
private Integer BookingChannel; 	//预定方式

@JsonProperty("FlightType")
private String FlightType; 		//航班类型

@JsonProperty("PnrCode")
private String PnrCode; 		//旅客订座编号

@JsonProperty("ListSegmentInfo")
private List<SegmentInfo> ListSegmentInfo; 	//航段信息

@JsonProperty("ListPassengerInfo")
private List<PassengerInfo> ListPassengerInfo; 		//旅客信息
public String getAccount() {
return account;
}
public void setAccount(String account) {
this.account = account;
}
public String getAgentName() {
return AgentName;
}
public void setAgentName(String agentName) {
AgentName = agentName;
}
public String getContactName() {
return ContactName;
}
public void setContactName(String contactName) {
ContactName = contactName;
}
public String getContactEmail() {
return ContactEmail;
}
public void setContactEmail(String contactEmail) {
ContactEmail = contactEmail;
}
public String getContactPhone() {
return ContactPhone;
}
public void setContactPhone(String contactPhone) {
ContactPhone = contactPhone;
}
public String getPassengerPhone() {
return PassengerPhone;
}
public void setPassengerPhone(String passengerPhone) {
PassengerPhone = passengerPhone;
}
public String getExtRefNo() {
return ExtRefNo;
}
public void setExtRefNo(String extRefNo) {
ExtRefNo = extRefNo;
}
public Integer getBookingChannel() {
return BookingChannel;
}
public void setBookingChannel(Integer bookingChannel) {
BookingChannel = bookingChannel;
}
public String getFlightType() {
return FlightType;
}
public void setFlightType(String flightType) {
FlightType = flightType;
}
public String getPnrCode() {
return PnrCode;
}
public void setPnrCode(String pnrCode) {
PnrCode = pnrCode;
}
public List<SegmentInfo> getListSegmentInfo() {
return ListSegmentInfo;
}
public void setListSegmentInfo(List<SegmentInfo> listSegmentInfo) {
ListSegmentInfo = listSegmentInfo;
}
public List<PassengerInfo> getListPassengerInfo() {
return ListPassengerInfo;
}
public void setListPassengerInfo(List<PassengerInfo> listPassengerInfo) {
ListPassengerInfo = listPassengerInfo;
}

}

注：@JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)是Java转换为json时null不显示

2.//调用b2t预定接口
ObjectMapper map = new ObjectMapper();
String param = map.writeValueAsString(flight);