我正在利用Spring提供的这个很酷的东西：Spring RESTWebService（spring的版本是3）。如果我从浏览器访问 URL，我可以看到 JSON 响应，但从客户端端点（Android 应用程序）我收到此错误消息：
Caused by: org.springframework.web.client.ResourceAccessException:
I/O error: Can not deserialize instance of MyObject out of START_ARRAY token
at [Source: org.apache.http.conn.EofSensorInputStream@4076e940; line: 1,
column: 1]; nested exception is org.codehaus.jackson.map.JsonMappingException:
Can not deserialize instance of MyObject out of START_ARRAY token
at [Source: org.apache.http.conn.EofSensorInputStream@4076e940; line: 1, column: 1]
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:466)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:414)
at org.springframework.web.client.RestTemplate.getForEntity(RestTemplate.java:234)
at com.be.android.locateconsultants.resources.AsyncTaskRESTServiceCaller.doInBackground(AsyncTaskRESTServiceCaller.java:43)
at com.be.android.locateconsultants.resources.AsyncTaskRESTServiceCaller.doInBackground(AsyncTaskRESTServiceCaller.java:1)
at android.os.AsyncTask$2.call(AsyncTask.java:252)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
... 4 more
Caused by: org.codehaus.jackson.map.JsonMappingException: Can not deserialize
instance of MyObject out of START_ARRAY token
at [Source: org.apache.http.conn.EofSensorInputStream@4076e940; line: 1, column: 1]
at org.codehaus.jackson.map.deser.StdDeserializationContext.mappingException(StdDeserializationContext.java:198)
at org.codehaus.jackson.map.deser.BeanDeserializer.deserializeUsingCreator(BeanDeserializer.java:565)
at org.codehaus.jackson.map.deser.BeanDeserializer.deserialize(BeanDeserializer.java:365)
at org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2395)
at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1655)
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.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:74)
at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:632)
at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:618)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:459)
... 10 more
MyObject 结构与服务器端应用程序的结构相同。
我尝试像这样请求服务器：
final String url = ".....";
RestTemplate restTemplate = new RestTemplate();
ResponseEntity<Consultant> responseEntity = restTemplate.getForEntity(
url, Consultant.class);
或者像这样：
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
HttpEntity<String> entity = new HttpEntity<String>(headers);
ResponseEntity<MyObject> response = restTemplate
.exchange("....",HttpMethod.GET, entity, MyObject.class);
System.out.println("RESPONSE: " + response.getBody());
但还是和上面一样的错误。
目前无法弄清楚我缺少什么，任何想法或提示都会很棒。
谢谢。
