json字符串怎么转换为java对象

Question

先贴代码
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
}

Answer 1

想把json格式转换为java对象，不知道哪里弄错了。请赐教！

Answer 2

举个例吧：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"));
}
}
要使程序可以运行必须引入JSON-lib包，JSON-lib包同时依赖于以下的JAR包：
commons-lang.jar
commons-beanutils.jar
commons-collections.jar
commons-logging.jar 
ezmorph.jar
json-lib-2.2.2-jdk15.jar

Answer 3

to gdhapple:你的方法早就试过了，解决不了问题。
要把Json字符串直接转换为java对象，并且转化了的java对象里要有值

Answer 4

两个库用得比较多：fastjson 和 gson。

Answer 5

http://www.cnblogs.com/hoojo/archive/2011/04/22/2025197.html
看最下面 5、 将JSON转换java对象 

Answer 6

你想他自动转为bean啊，不如你自己遍历一下JSONObject，将get得到的数据赋值给bean不就行了。