JAVA对象jackson序列化json属性名首字母变成小写的解决方案

java代码对象如下：

package com.ctrip.market.messagepush.service.entity;

import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;

public class WaitSendModel {

public long MsgID;

public String GroupID;

public int SendLevel;

public int SendType;

public long getMsgID() {
return MsgID;
}

public void setMsgID(long msgID) {
this.MsgID = msgID;
}

public String getGroupID() {
return GroupID;
}

public void setGroupID(String groupID) {
this.GroupID = groupID;
}

public int getSendLevel() {
return SendLevel;
}

public void setSendLevel(int sendLevel) {
this.SendLevel = sendLevel;
}

public int getSendType() {
return SendType;
}

public void setSendType(int sendType) {
this.SendType = sendType;
}
}

执行结果，首字母小写：

Json={"msgID":100005,"groupID":"00001","sendLevel":5}

以上的对象如果通过jackson转成json格式的话，首字母会自动变成小写，如果我想让首字母变成大写的，该如何处理呢？

在属性上加@JsonProperty 注解，并且在对应的setter ，getter 上面加上@JsonIgnore，这样就可以了，添加完之后的代码如下：

package com.ctrip.market.messagepush.service.entity;

import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;

public class WaitSendModel {

@JsonProperty
public long MsgID;

@JsonProperty
public String GroupID;

@JsonProperty
public int SendLevel;

@JsonProperty
public int SendType;

@JsonIgnore
public long getMsgID() {
return MsgID;
}

@JsonIgnore
public void setMsgID(long msgID) {
this.MsgID = msgID;
}
@JsonIgnore
public String getGroupID() {
return GroupID;
}
@JsonIgnore
public void setGroupID(String groupID) {
this.GroupID = groupID;
}
@JsonIgnore
public int getSendLevel() {
return SendLevel;
}
@JsonIgnore
public void setSendLevel(int sendLevel) {
this.SendLevel = sendLevel;
}
@JsonIgnore
public int getSendType() {
return SendType;
}
@JsonIgnore
public void setSendType(int sendType) {
this.SendType = sendType;
}
}

执行结果，首字母大写：

Json={"MsgID":100005,"GroupID":"00001","SendLevel":5,"SendType":0}