JSONArray数据转换成java List

原文地址：http://hi.baidu.com/chunying031/item/054f60ab431abcab28ce9de5

packageno.integrasco.ingentia.news.qaedition;

publicclassPerson{

privateStringname;

privateintage;

publicStringgetName(){

returnname;
}

publicvoidsetName(Stringname){

this.name=name;
}

publicintgetAge(){

returnage;
}

publicvoidsetAge(intage){

this.age=age;
}
}

packageno.integrasco.ingentia.news.qaedition;

importjava.util.List;

importnet.sf.json.JSONArray;
importnet.sf.json.JsonConfig;

publicclassJsonTest{

/**
*@paramargs
*/
publicstaticvoidmain(String[]args){

//转换方法1
JSONArrayarray=JSONArray.fromObject("[{'name':'hehe','age':22}]");
List<Person>list=JSONArray.toList(array,Person.class);//过时方法
System.out.println(list.get(0).getName());

//转换方法2
List<?>list2=JSONArray.toList(array,newPerson(),newJsonConfig());//参数1为要转换的JSONArray数据，参数2为要转换的目标数据，即List盛装的数据
Personperson=(Person)list2.get(0);
System.out.println(person.getAge());
}

}

从页面接收json格式的数据，在java类里面进行解析

StringjsonStr={"name":"zfj","dd":[{"ddr":"1","encrypt":"2","ff":"1","length":"23","ffe":"editStyled","ill":"1","pkor":"2","name":"zfj","isKey":"2","alias":"ffff"}],"addRelations":[{"type":"2","ld":"zfj","ld":"2"}]};

将此字符串放在ruquest或者其他的变量里面，传递到后台。

如放在reques中：
request.getRequestDispatcher("/geServlet?data="+jsonStr).forward(request,response);

在servlet或java类里这样接收：
Stringjson=request.ge[size=large][/size]tParameter("data");
JSONObjectjsonObject=JSONObject.fromObject(data);
Stringname=jsonObject.getString（“name”）；
......
//对于数组这样接收用

JSONArrayjan=(JSONArray)jsonObject.get("dd");
if(jan!=null||jan.size()!=0){
for(inti=0;i<ja.size();i++){
JSONObjectjo=JSONObject.fromObject(ja.get(i));
Stringff=jo.getString("ff");
......
}
}

因为我包中没有fromObject、toList，所以用了下面的方法：

importcom.alibaba.fastjson.JSON;

.

ArrayList<SystemMessageInfo>sysMessageInfoList=JSON.parSEObject(resObj,

newTypeReference<ArrayList<SystemMessageInfo>>(){

});

完整的：

1.

importcom.alibaba.fastjson.JSON;

publicStringGetMultiLangMessage(Stringkey,StringdefaultString){

try{

if(multiLangMsg.getItemObject()==null){

sysMsgMap=newHashMap<Integer,SystemMessageInfo>();

LinkedHashMap<String,Object>params=newLinkedHashMap<String,Object>();

params.put("clientName",Session.current.getComputerName());

StringresObj=KSOAPServiceUtil.callWCFService(

"GetSystemMessageForList",params);

Log.e("GetMultiLangMessageresObj",resObj);

if(!PosEnvironment.isServiceReturnNull(resObj)){

multiLangMsg.setItemObject("msg");

}

if(PosEnvironment.isServiceReturnNull(resObj)){

returndefaultString;

else

{

for(SystemMessageInfosystemMessageInfo:sysMessageInfoList){

sysMsgMap.put(systemMessageInfo.getSysMegNumber(),systemMessageInfo);

StringstrValString="";

sysMsgInfo=sysMsgMap.get(Integer.valueOf(key));

if(sysMsgInfo!=null){

strValString=PosEnvironment.getCurrentName(sysMsgInfo.getSysMegName1(),arial; font-size:14px; line-height:21px"> sysMsgInfo.getSysMegName2(),arial; font-size:14px; line-height:21px"> sysMsgInfo.getSysMegName3(),arial; font-size:14px; line-height:21px"> sysMsgInfo.getSysMegName4(),arial; font-size:14px; line-height:21px"> sysMsgInfo.getSysMegName5());

if(PosEnvironment.isNullOrEmpty(strValString)){

strValString=defaultString;

returnstrValString;

}catch(Exceptione){

if(einstanceofNetworkErrorException){

Session.current.getNavigator().getCurrentScreen().ShowMessageBox(

"",e.getMessage(),DialogButtons.OK,newObject[]{POSFEVars.SystemAlertFlag});

else{

2.KSOAPServiceUtil.java

//callingforWCFServicebyusingKSoapjar.

publicclassKSOAPServiceUtil{

publicstaticStringserviceUrl="";

publicstaticStringnamespace="";

publicstaticStringsoap_action_path="";

/**

*theparamsiscallthewebService'sparamsinaccordancewiththeorder

*parameter,notnecessarilyinaccordancewiththeparametername.

*

*@parammethodName

*@paramparams

*@return

*/

publicstaticStringcallWCFService(StringmethodName,Object>params){

StringretSoapObj=null;

SoapObjectrequest=newSoapObject(namespace,methodName);

//Callmethodtosettheparametervalues,thereisnoargumentcan

//be

//omitted

//settheparsmsisjson

if(params!=null&&params.size()>0){

for(Map.Entry<String,Object>entry:params.entrySet()){

if(((entry.getValue())instanceofInteger)

||(entry.getValue()instanceofBoolean)

||(entry.getValue()instanceofString)){

request.addProperty(entry.getKey().toString(),arial; font-size:14px; line-height:21px"> entry.getValue());

}else{

JSON.toJSONString(entry.getValue(),SerializerFeature.WriteDateUseDateFormat));

//CallingWebservicemethodgeneratesaSOAPrequestmessage

//settheWebServiceversion

SoapSerializationEnvelopeenvelope=newSoapSerializationEnvelope(

SoapEnvelope.VER11);

envelope.dotNet=true;//Here,ifsettoTRUE,thentheserverwill

//getlessthantheparametervalues

//(such

//as:thesedataintothedatabaseinit)

envelope.bodyOut=request;

envelope.encodingStyle="UTF-8";

HttpTransportSEht=newHttpTransportSE(serviceUrl);

envelope.setOutputSoapObject(request);

ht.call(soap_action_path+methodName,envelope);//usingthecall

//methodcall

//WebService

//method

retSoapObj=envelope.getResponse().toString();//WebServicemethod

//toobtainthe

//returnresults

if(retSoapObj.trim().equals("anyType{}")){

retSoapObj="{}";

//calltheWebServicenamespaceandmethod;

returnretSoapObj;

}

（编辑：李大同）

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