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java-发送复杂的JSON对象
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我想与Web服务器通信并交换JSON信息.
我的网络服务网址如下所示:http://46.157.263.140/EngineTestingWCF/DPMobileBookingService.svc/SearchOnlyCus
这是我的JSON请求格式.
{
"f": {
"Adults": 1,
"CabinClass": 0,
"ChildAge": [
7
],
"Children": 1,
"CustomerId": 0,
"CustomerType": 0,
"CustomerUserId": 81,
"DepartureDate": "/Date(1358965800000+0530)/",
"DepartureDateGap": 0,
"Infants": 1,
"IsPackageUpsell": false,
"JourneyType": 2,
"PreferredCurrency": "INR",
"ReturnDate": "/Date(1359138600000+0530)/",
"ReturnDateGap": 0,
"SearchOption": 1
},
"fsc": "0"
}
我尝试使用以下代码发送请求:
public class Fdetails {
private String Adults = "1";
private String CabinClass = "0";
private String[] ChildAge = { "7" };
private String Children = "1";
private String CustomerId = "0";
private String CustomerType = "0";
private String CustomerUserId = "0";
private Date DepartureDate = new Date();
private String DepartureDateGap = "0";
private String Infants = "1";
private String IsPackageUpsell = "false";
private String JourneyType = "1";
private String PreferredCurrency = "MYR";
private String ReturnDate = "";
private String ReturnDateGap = "0";
private String SearchOption = "1";
}
public class Fpack {
private Fdetails f = new Fdetails();
private String fsc = "0";
}
然后使用Gson创建如下的JSON对象:
public static String getJSONString(String url) {
String jsonResponse = null;
String jsonReq = null;
Fpack fReq = new Fpack();
try {
Gson gson = new Gson();
jsonReq = gson.toJson(fReq);
JSONObject json = new JSONObject(jsonReq);
JSONObject jsonObjRecv = HttpClient.SendHttpPost(url, json);
jsonResponse = jsonObjRecv.toString();
}
catch (JSONException e) {
e.printStackTrace();
}
return jsonResponse;
}
而我的HttpClient.SendHttpPost方法是
public static JSONObject SendHttpPost(String URL, JSONObject json) {
try {
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpPost httpPostRequest = new HttpPost(URL);
StringEntity se;
se = new StringEntity(json.toString());
httpPostRequest.setEntity(se);
se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
HttpResponse response = (HttpResponse) httpclient.execute(httpPostRequest);
HttpEntity entity = response.getEntity();
if (entity != null) {
// Read the content stream
InputStream instream = entity.getContent();
Header contentEncoding = response.getFirstHeader("Content-Encoding");
if (contentEncoding != null && contentEncoding.getValue().equalsIgnoreCase("gzip")) {
instream = new GZIPInputStream(instream);
}
// convert content stream to a String
String resultString= convertStreamToString(instream);
instream.close();
resultString = resultString.substring(1,resultString.length()-1); // remove wrapping "[" and "]"
// Transform the String into a JSONObject
JSONObject jsonObjRecv = new JSONObject(resultString);
return jsonObjRecv;
}
catch (Exception e)
{
e.printStackTrace();
}
return null;
}
现在,我得到以下异常:
org.json.JSONException: Value !DOCTYPE of type java.lang.String cannot be converted to JSONObject
at org.json.JSON.typeMismatch(JSON.java:111)
at org.json.JSONObject.<init>(JSONObject.java:158)
at org.json.JSONObject.<init>(JSONObject.java:171)
在我发出请求之前,JSON字符串的打印输出如下:
{
"f": {
"PreferredCurrency": "MYR",
"ReturnDate": "",
"ChildAge": [
7
],
"DepartureDate": "Mar 2, 2013 1:17:06 PM",
"CustomerUserId": 0,
"CustomerType": 0,
"CustomerId": 0,
"Children": 1,
"DepartureDateGap": 0,
"Infants": 1,
"IsPackageUpsell": false,
"JourneyType": 1,
"CabinClass": 0,
"Adults": 1,
"ReturnDateGap": 0,
"SearchOption": 1
},
"fsc": "0"
}
如何解决此异常?提前致谢!
解决方法:
要创建一个附加了JSON对象的请求,您应该执行以下操作:
public static String sendComment (String commentString, int taskId, String sessionId, int displayType, String url) throws Exception
{
Map<String, Object> jsonValues = new HashMap<String, Object>();
jsonValues.put("sessionID", sessionId);
jsonValues.put("NewTaskComment", commentString);
jsonValues.put("TaskID" , taskId);
jsonValues.put("DisplayType" , displayType);
JSONObject json = new JSONObject(jsonValues);
DefaultHttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(url + SEND_COMMENT_ACTION);
AbstractHttpEntity entity = new ByteArrayEntity(json.toString().getBytes("UTF8"));
entity.setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
post.setEntity(entity);
HttpResponse response = client.execute(post);
return getContent(response);
}
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