JAVA对象jackson序列化json属性名首字母变成小写的解决方案

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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}

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