Jackson: kann nicht deserialisiert Beispiel aus START_ARRAY token

Brauche ich zum senden einer post-Anfrage an einen webservice, aber es gibt folgende Ausnahme

 java.io.IOException: Server returned HTTP response code: 500 for URL domain.com

Den tatsächlichen server-Antwort ist wie folgt :

<html>
<head><title>500 Servlet Exception</title></head>
<body>
<h1>500 Servlet Exception</h1>
<code><pre>
<script language='javascript' type='text/javascript'>
function show() { document.getElementById('trace').style.display = ''; }
</script>
<a style="text-decoration" href="javascript:show();">[show]</a> org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance
of com.domain.service.beans.spec.SearchSpec out of START_ARRAY token
 at [Source: com.caucho.server.connection.ServletInputStreamImpl@7aafd4d3; line: 1, column: 1]
<span id="trace" style="display:none">
org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance
of com.domain.service.beans.spec.SearchSpec out of START_ARRAY token
 at [Source: com.caucho.server.connection.ServletInputStreamImpl@7aafd4d3; line: 1, column: 1]
    at org.codehaus.jackson.map.JsonMappingException.from(JsonMappingException.java:163)
    at org.codehaus.jackson.map.deser.StdDeserializationContext.mappingException(StdDeserializationContext.java:219)
    at org.codehaus.jackson.map.deser.StdDeserializationContext.mappingException(StdDeserializationContext.java:212)
    at org.codehaus.jackson.map.deser.BeanDeserializer.deserializeFromArray(BeanDeserializer.java:875)
    at org.codehaus.jackson.map.deser.BeanDeserializer.deserialize(BeanDeserializer.java:597)
    at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2732)
    at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1923)
    at org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.readInternal(MappingJacksonHttpMessageConverter.java:135)
    at org.springframework.http.converter.AbstractHttpMessageConverter.read(AbstractHttpMessageConverter.java:154)
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.readWithMessageConverters(HandlerMethodInvoker.java:643)
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveRequestBody(HandlerMethodInvoker.java:607)
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.resolveHandlerArguments(HandlerMethodInvoker.java:346)
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:171)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:427)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:415)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:788)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:717)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:153)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:91)
    at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:103)
    at com.domain.service.filter.LoggingFilter.doFilter(LoggingFilter.java:91)
    at com.caucho.server.dispatch.FilterFilterChain.doFilter(FilterFilterChain.java:87)
    at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:187)
    at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265)
    at com.caucho.server.hmux.HmuxRequest.handleRequest(HmuxRequest.java:436)
    at com.caucho.server.port.TcpConnection.run(TcpConnection.java:682)
    at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:743)
    at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:662)
    at java.lang.Thread.run(Thread.java:662)
</span>
</pre></code>
</body></html>

Sende ich die Anfrage auf der Grundlage der nachfolgenden

Method: POST
This returns a list of products
Dates are optional.
Destination ID and currencyCode are required.
JSON Request Parameters
{

"startDate":"2013-10-25", "endDate":"2013-10-27", "topX":"1-5", "destId":684, "currencyCode":"EUR", "catId":0,
"subCatId":0, "dealsOnly":false, "sortOrder":"PRICE_FROM_A"
}

so r t O r d e r
Valid sort orders:
TOP_SELLERS - The top sellers - default sortOrder 
REVIEW_AVG_RATING_A - Traveler Rating (low->high) Average 
REVIEW_AVG_RATING_D - Traveler Rating (high->low) Average 
PRICE_FROM_A - Price (low->high)
PRICE_FROM_D - Price (high->low)

topX
For returning results in particular positions. e.g. a value of 11-15 will return the results in position 11 to 15 based on the sort (total of 5 products). Useful for pagination.

catId
Category id from the /service/taxonomy/categories

subCatId
Sub Category id from the /service/taxonomy/categories

dealsOnly
Applicable only when there is no startDate/endDate as it is a destionation search only feature. This API is used for obtaining lists of products for destination pages.

Mein Code

 public void Search() {


        JSONObject obj = new JSONObject();
        obj.put("startDate", "2014-08-25");
        obj.put("endDate", "2014-08-25");
        obj.put("topX", "1-5");
        obj.put("destId", 684);
        obj.put("currencyCode", "EUR");
        obj.put("catId", 21);
        obj.put("subCatId", 78);
        obj.put("dealsOnly", false);
        obj.put("sortOrder","PRICE_FROM_A");

        JSONArray jsarray = new JSONArray();
        jsarray.add(obj);
        putDataToServer(jsarray.toJSONString());

    }

    public void putDataToServer(String returnedJObject) {

try{
        java.lang.String contentToPost = returnedJObject;

        java.net.URLConnection connection = new java.net.URL("domain.com").openConnection();

        connection.setUseCaches(true);
        connection.setDoInput(true);
        connection.setDoOutput(true);
        connection.setRequestProperty("Content-Length", "" + contentToPost.length());

        connection.setRequestProperty("Content-Type", "application/json");
        connection.setRequestProperty("Cache-Control", "no-cache");

        java.io.OutputStream stream = connection.getOutputStream();
        stream.write(contentToPost.getBytes());
        stream.close();
        System.err.println("request is sent");

        BufferedReader br = new BufferedReader(new InputStreamReader(connection.getInputStream()));
        System.err.println(br.readLine());
        br.close();

    }catch(Exception e){
            e.printStackTrace();
            }
    }

Warum erstellen Sie Ihre json-wie das? Warum nicht das Modell und dann können Sie die Jackson-ObjectMapper zu erstellen, die Ihre Daten bitten? So oder so, es scheint der server ist unglücklich, weil Sie senden ein array
Wie zu verwenden ObjectMapper? Ich weiß, wie ich parse XML-Antwort in das Objekt bekam aber keine Ahnung von JSON, würden Sie helfen.

InformationsquelleAutor J888 | 2014-03-12

0

Server die Fehler angegeben, dass Sie nicht erwarten ein array von Objekten. Löschen Sie diesen code
```
JSONArray jsarray = new JSONArray();
jsarray.add(obj);
```
InformationsquelleAutor Leon

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