Gson

版本 gson-2.2.4.jar

java 实体

Goods.java

public class Goods implements Serializable{

    private static final long serialVersionUID = 1L;
    //商品名称
    private String goodsName;
    //商品总价
    private String goodsCost;
    //商品数量
    private String goodsNum;
    //商品单价
    private String goodsPrice;

    public String getGoodsName() {
        return goodsName;
    }

    public void setGoodsName(String goodsName) {
        this.goodsName = goodsName;
    }

    public String getGoodsCost() {
        return goodsCost;
    }

    public void setGoodsCost(String goodsCost) {
        this.goodsCost = goodsCost;
    }

    public String getGoodsNum() {
        return goodsNum;
    }

    public void setGoodsNum(String goodsNum) {
        this.goodsNum = goodsNum;
    }

    public String getGoodsPrice() {
        return goodsPrice;
    }

    public void setGoodsPrice(String goodsPrice) {
        this.goodsPrice = goodsPrice;
    }
}

ProofPrint.java

public class ProofPrint implements Serializable {
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    //终端号
    private String  terminalNo;
    //终端类型 pc/pos
    private String  terminalType;
    //操作员编号
    private String operatorNo;
    //操作员姓名
    private String operatorName;
    //交易日期
    private String  transDate;
    //银行卡号
    private String cardiId;
    //商铺名称
    private String storeName;
    //交易流水
    private String transactionRecord;
    //交易类型：消费/查询
    private String storeType;
    //批次号
    private String  batchNumber;
    //金额
    private String cost;
    //商品
    private ArrayList<Goods> goodsList;


    public String getTerminalNo() {
        return terminalNo;
    }

    public void setTerminalNo(String terminalNo) {
        this.terminalNo = terminalNo;
    }

    public String getTerminalType() {
        return terminalType;
    }

    public void setTerminalType(String terminalType) {
        this.terminalType = terminalType;
    }

    public String getOperatorNo() {
        return operatorNo;
    }

    public void setOperatorNo(String operatorNo) {
        this.operatorNo = operatorNo;
    }

    public String getOperatorName() {
        return operatorName;
    }

    public void setOperatorName(String operatorName) {
        this.operatorName = operatorName;
    }

    public String getTransDate() {
        return transDate;
    }

    public void setTransDate(String transDate) {
        this.transDate = transDate;
    }

    public String getCardiId() {
        return cardiId;
    }

    public void setCardiId(String cardiId) {
        this.cardiId = cardiId;
    }

    public String getStoreName() {
        return storeName;
    }

    public void setStoreName(String storeName) {
        this.storeName = storeName;
    }

    public String getTransactionRecord() {
        return transactionRecord;
    }

    public void setTransactionRecord(String transactionRecord) {
        this.transactionRecord = transactionRecord;
    }

    public String getStoreType() {
        return storeType;
    }

    public void setStoreType(String storeType) {
        this.storeType = storeType;
    }

    public String getBatchNumber() {
        return batchNumber;
    }

    public void setBatchNumber(String batchNumber) {
        this.batchNumber = batchNumber;
    }

    public String getCost() {
        return cost;
    }

    public void setCost(String cost) {
        this.cost = cost;
    }

    public ArrayList<Goods> getGoodsList() {
        return goodsList;
    }

    public void setGoodsList(ArrayList<Goods> goodsList) {
        this.goodsList = goodsList;
    }
}

Msg.java

public class Msg<T> implements Serializable{

    private static final long serialVersionUID = 1L;
    private String businessCode ;
    private T date;

    public String getBusinessCode() {
        return businessCode;
    }

    public T getDate() {
        return date;
    }

    public void setBusinessCode(String businessCode) {
        this.businessCode = businessCode;
    }

    public void setDate(T date) {
        this.date = date;
    }
}

R_msg.java

public class R_msg implements Serializable{

    private String errCode;//错误码
    private String errMsg;//错误描述

    public String getErrCode() {
        return errCode;
    }

    public void setErrCode(String errCode) {
        this.errCode = errCode;
    }

    public String getErrMsg() {
        return errMsg;
    }

    public void setErrMsg(String errMsg) {
        this.errMsg = errMsg;
    }
}

对象–转–>json字符串

Gson gson = new Gson();
String sendMsg = gson.toJson(msg);

 ArrayList<Goods> goodsList = new ArrayList<Goods>();
 Goods goods = new Goods();
 goods.setGoodsCost("1000");
 goods.setGoodsName("小米6");
 goods.setGoodsPrice("1000");
 goods.setGoodsNum("1");
 Goods goods1 = new Goods();
 goods1.setGoodsCost("2000");
 goods1.setGoodsName("小米7");
 goods1.setGoodsPrice("2000");
 goods1.setGoodsNum("1");
 goodsList.add(goods);
 goodsList.add(goods1);

ProofPrint print  = new ProofPrint();
 print.setBatchNumber("11111");
                            print.setCardiId("6227677594794868046");
print.setCost("1000");
print.setGoodsList(goodsList);
print.setOperatorName("张三");
print.setOperatorNo("0001");
print.setStoreName("小米旗舰店");
print.setStoreType("消费");
print.setTerminalNo("10001");
print.setTerminalType("pos");
print.setTransDate("2017-10-25 10:24:00");
                            print.setTransactionRecord("8364983749846");

Msg<ProofPrint> msg = new Msg<ProofPrint>();
msg.setBusinessCode("ZT001");
msg.setDate(print);
Gson gson = new Gson();
String sendMsg = gson.toJson(msg);

json字符串–转–>对象

//解决含泛型bean转换失败问题
 Type jsonType = new TypeToken<Msg<R_msg>>() {}.getType();
 Gson gson = new Gson();
 //msgJson 字符串
 Msg<R_msg> msg = gson.fromJson(msgJson, jsonType);