public static void main(String[] args) {
        String json="{"+
                        "'PriceProductType': '1',"+
                        "'PriceRouteType': 'OW',"+
                        "'PriceList': [{"+
                            "'PassengerType': 'ADT',"+
                            "'FareBasis': 'Y93',"+
                            "'TourCode': 'EH',"+
                            "'Discount': '93',"+
                            "'EI': '免费更改',"+
                            "'Comment': 'null',"+
                            "'Baggage': '20KG',"+
                            "'ValidityPeriod': 'null',"+
                            "'MinStay': 'null',"+
                            "'PriceValue': 1760,"+
                            "'RSP': 1890,"+
                            "'RefundedFlag': true,"+
                            "'RefundedComment': '航班起飞前2小时（含），免费退票；航班起飞前2小时内及航班起飞后，收取10%的退票手续费（退票手续费不得低于50元）。',"+
                            "'ChangedComment': '免费改期；允许签转；',"+
                            "'RescheduledFlag': true,"+
                            "'FreeChangeTimes': 99,"+
                            "'UpgradeFlag': true,"+
                            "'ChangeAirLineFlag': true,"+
                            "'YPrice': 1890,"+
                            "'FareID': '17292',"+
                            "'YQTax': 100,"+
                            "'CNTax': 50,"+
                            "'CombineRuleInfo': 'null',"+
                            "'FareSign': 'AD489916A9561C9757E00F2475E60CDBDD5E66C2'" +
                        "}]" +
                    "}";
        json = json.replace("null", "1111");
        System.out.println(json);
        Map<String, Object> classMap = new HashMap<String, Object> ();
        classMap.put( "PriceList", HOPrice.class );
        
        
        HOProductPrice bean = (HOProductPrice)JSONObject.toBean( JSONObject.fromObject(json), HOProductPrice.class, classMap);
        System.out.println(bean);
        
    }

public class HOProductPrice {
    public HOProductPrice() {
        super();
    }

    private String PriceProductType = "";
    private String PriceRouteType = "";
    private List<HOPrice> PriceList;
//set,get

}
public class HOPrice {
    public HOPrice() {
        super();
    }

    private String PassengerType = "";
    private String FareBasis = "";
    private String TourCode = "";
    private String Discount = "";
    private String EI = "";    //
    private String Comment = "";
    private String Baggage = "";
    private String ValidityPeriod = "";
    private String MinStay = "";
    private double PriceValue = 0.0 ;
    private double RSP = 0.0 ;    //
    private boolean  RefundedFlag;
    private String RefundedComment = "";
    private String ChangedComment = "";
    private boolean  RescheduledFlag;
    private int FreeChangeTimes = 0 ;
    private boolean ChangeAirLineFlag;
    private boolean UpgradeFlag ;
    private double YPrice = 0.0  ;  //
    private String FareID = "";
    private double YQTax = 0.0;     //
    private double CNTax = 0.0;     //
    private String FareSign = "";
    private String CombineRuleInfo="";
//set,get
}

import net.sf.json.JSONObject;

public class JsonTest {

    public static void main(String[] args) {
        String str = "{\"lendperson\":\"李四\",\"lendcompany\":\"有限公司\",\"checkperson\":\"李四\",\"lenddate\":\"2010-07-19T00:00:00\",\"lendcounts\":4,\"" +
                "passports\":[{\"passportid\":\"d\",\"name\":\"李豫川\",\"passporttype\":\"K\"},{\"passportid\":\"K9051\",\"name\":\"李平\",\"passporttype\":\"K\"}," +
                "{\"passportid\":\"K90517\",\"name\":\"袁寒梅\",\"passporttype\":\"K\"},{\"passportid\":\"K905199\",\"name\":\"贺明\",\"passporttype\":\"K\"}]}";
        
        JSONObject j = JSONObject.fromObject(str);
        System.out.println(j.get("lendperson"));
    }
}