我收到错误：
线程“main”中的异常org.springframework.http.converter.HttpMessageNotReadableException：无法读取JSON：无法从START_ARRAY令牌中反序列化com.zee.FilterVO的实例.在[来源：sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@1b54362; line：1,column：1];嵌套异常是org.codehaus.jackson.map.JsonMappingException ::无法从START_ARRAY令牌中反序列化com.zee.FilterVO的实例
ResponseEntity用于映射JSON的Java Bean：
public class FilterVO {
private String userName;
private String expirationTime;
private String lastMatchedTime;
private String state;
private Integer matchedTodayCount;
private Boolean useRegEx;
private ListJSON我想要得到的：
[{
"userName": "Z111111","expirationTime": "2015-03-15T14:00:00.000-0400","activationTime": "1969-12-31T19:00:00.000-0500","hosts": ["aa","bb"],"matchStrings": [" aa is not running"," bb is not running"],"useRegEx": false,"nameValuePairs": {
"KEY VALUE": "asasa","PROGRAM": "dsds","REGION": "dfsffs"
},"objectId": "SOMEID:20141015140803579-802","matchedTodayCount": 190,"lastMatchedTime": "2015-03-09T07:53:20.366-0400","state": "ACTIVE","description": "Blah Blah Blah..."
}]
Initially I thought I am facing this issue because of deserialization of one element Array. So I modified my java code.
private void getFilter() {
RestTemplate restTemplate = getCustomRestTemplate();
HttpHeaders headers = new HttpHeaders();
headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
headers.set("access-token",getAccessToken());
HttpEntity我仍然得到同样的错误.
我在我的类路径中有以下杰克逊罐子：
jackson-annotations-2.5.1.jar
jackson-core-2.5.1.jar
jackson-core-asl-1.9.13.jar
jackson-databind-2.5.1.jar
jackson-datatype-joda-2.5.1.jar
jackson-mapper-asl-1.9.13.jar
完整堆栈跟踪：
Exception in thread "main" org.springframework.http.converter.HttpMessageNotReadableException: Could not read JSON: Can not deserialize instance of com.zee.FilterVO out of START_ARRAY token
at [Source: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@bc5596; line: 1,column: 1]; nested exception is org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance of com.zee.FilterVO out of START_ARRAY token
at [Source: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@bc5596; line: 1,column: 1]
at org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.readJavaType(MappingJacksonHttpMessageConverter.java:179)
at org.springframework.http.converter.json.MappingJacksonHttpMessageConverter.read(MappingJacksonHttpMessageConverter.java:171)
at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:94)
at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:693)
at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:679)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:496)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:465)
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:416)
at com.fidelity.selfservice.test.JMagicRestAPI.getFilter(JMagicRestAPI.java:63)
at com.fidelity.selfservice.test.JMagicRestAPI.main(JMagicRestAPI.java:46)
Caused by: org.codehaus.jackson.map.JsonMappingException: Can not deserialize instance of com.zee.FilterVO out of START_ARRAY token
at [Source: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@bc5596; 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.readJavaType(MappingJacksonHttpMessageConverter.java:176)
... 9 more
最佳答案
问题是你正在获得一个JSON数组,但是你正试图用你的情况下的POJO,FilterVO反序列化那个JSON.
原文链接：https://www.f2er.com/spring/431538.html尝试更改此行：
ResponseEntity通过这个：
ResponseEntity现在你将有一个List< FilterVO>跟…共事.
