我试图使用RestTemplate.exchange（）方法解析服务中的JSON响应 . 但它失败了解析错误 .
Java code
RestTemplate restTemplate = new RestTemplate();
HttpHeaders headers = new HttpHeaders();
headers.setAccept (Arrays.asList(MediaType.APPLICATION_JSON));
headers.set("Token", "********");
System.out.println("***************************");
System.out.println(headers.toString());
HttpEntity<String> entity = new HttpEntity<String>("", headers);
ResponseEntity<SATCHBResponse> result = restTemplate.exchange(<>, HttpMethod.GET, entity, SATCHBResponse.class);
System.out.println(result.getBody());*
JSON Response from the HTTP call
[
{
"MetaData":
{
"SPVersion": "0" ,
"Status": "Informational" ,
"Description": "High Memory Usage; Hardware Failure detected" ,
"SchemaVesion": 1 ,
"AgentVersion": "2.0.0.0" ,
"ServiceTag": "xxxxx" ,
"Model": "xxxxxxxxxxxx" ,
"OSVersion": "6.3.9600" ,
"BIOSVersion": "A08" ,
"UTCDate": "2018-06-20T18:22:32.3388283Z" ,
"Registered": false
},
"id": "xxxxxxxxxxxxxxxxxxxxxxxx" ,
"Information":
{
"SystemDriveFreeSpace": "110.29 GB" ,
"LastBootUpDate": "2017-04-07T20:48:13.486816" ,
"HighCPUUsage": 60 ,
"WindowsUpdatedRunDate": "2017-04-05T08:13:42" ,
"VideoCard-ddqdwqdwqdwqC77VGACable":
{
"Status": "Warning" ,
"Type": "PredictiveFailure" ,
"Source": "DDV"
},
"LocalDate": "2018-06-10T23:52:32.3970051+05:30" ,
"HighMemUsage": 87.5
}
},
{
"MetaData":
{
"SPVersion": "0" ,
"Status": "Informational" ,
"Description": "High Memory Usage; Hardware Failure detected" ,
"SchemaVesion": 1 ,
"AgentVersion": "2.0.0.0" ,
"ServiceTag": "sddddfdsfd" ,
"Model": "dfdsfsdfsdfdsf" ,
"OSVersion": "6.3.9600" ,
"BIOSVersion": "A08" ,
"UTCDate": "2018-06-19T18:22:32.3388283Z" ,
"Registered": false
},
"id": "dfdsfsd$$9223370507470375807" ,
"Information":
{
"SystemDriveFreeSpace": "110.29 GB" ,
"LastBootUpDate": "2017-04-07T20:48:13.486816" ,
"HighCPUUsage": 60 ,
"WindowsUpdatedRunDate": "2017-04-05T08:13:42" ,
"VideoCard-Cadsfdfsdafds7VGACable":
{
"Status": "Warning" ,
"Type": "PredictiveFailure" ,
"Source": "DDV"
},
"LocalDate": "2018-06-10T23:52:32.3970051+05:30" ,
"HighMemUsage": 87.5
}
}
]
JSON Object Java Class
package com.example.demo;
import java.util.ArrayList;
import java.util.List;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;
@JsonPropertyOrder({
"topLevelArray"
})
public class SATCHBResponse {
@JsonProperty("topLevelArray")
protected List<SATCHBResponse.TopLevelArray> topLevelArray;
public List<SATCHBResponse.TopLevelArray> getTopLevelArray() {
if (topLevelArray == null) {
topLevelArray = new ArrayList<SATCHBResponse.TopLevelArray>();
}
return this.topLevelArray;
}
public void setTopLevelArray(List<SATCHBResponse.TopLevelArray> value) {
this.topLevelArray = value;
}
@JsonPropertyOrder({
"metaData",
"information",
"id"
})
public static class TopLevelArray {
@JsonProperty("MetaData")
protected SATCHBResponse.TopLevelArray.MetaData metaData;
@JsonProperty("Information")
protected SATCHBResponse.TopLevelArray.Information information;
@JsonProperty("id")
protected String id;
public SATCHBResponse.TopLevelArray.MetaData getMetaData() {
return metaData;
}
public void setMetaData(SATCHBResponse.TopLevelArray.MetaData value) {
this.metaData = value;
}
public SATCHBResponse.TopLevelArray.Information getInformation() {
return information;
}
public void setInformation(SATCHBResponse.TopLevelArray.Information value) {
this.information = value;
}
public String getId() {
return id;
}
public void setId(String value) {
this.id = value;
}
// "applicationCrashesLast24Hrs",
@JsonPropertyOrder({
"localDate",
"lastBootUpDate",
"windowsUpdatedRunDate",
"systemDriveFreeSpace",
"highMemUsage",
"highCPUUsage",
"other71A5083EDC91460C956878CB755731AE"
})
public static class Information {
@JsonProperty("LocalDate")
protected String localDate;
@JsonProperty("LastBootUpDate")
protected String lastBootUpDate;
@JsonProperty("WindowsUpdatedRunDate")
protected String windowsUpdatedRunDate;
// @JsonProperty("ApplicationCrashesLast24hrs")
// protected String applicationCrashesLast24Hrs;
@JsonProperty("SystemDriveFreeSpace")
protected String systemDriveFreeSpace;
@JsonProperty("HighMemUsage")
protected Double highMemUsage;
@JsonProperty("HighCPUUsage")
protected String highCPUUsage;
@JsonProperty("Other-71A5083E-DC91-460C-9568-78CB755731AE")
protected SATCHBResponse.TopLevelArray.Information.Other71A5083EDC91460C956878CB755731AE other71A5083EDC91460C956878CB755731AE;
public String getLocalDate() {
return localDate;
}
public void setLocalDate(String value) {
this.localDate = value;
}
public String getLastBootUpDate() {
return lastBootUpDate;
}
public void setLastBootUpDate(String value) {
this.lastBootUpDate = value;
}
public String getWindowsUpdatedRunDate() {
return windowsUpdatedRunDate;
}
public void setWindowsUpdatedRunDate(String value) {
this.windowsUpdatedRunDate = value;
}
/* public String getApplicationCrashesLast24Hrs() {
return applicationCrashesLast24Hrs;
}
public void setApplicationCrashesLast24Hrs(String value) {
this.applicationCrashesLast24Hrs = value;
}*/
public String getSystemDriveFreeSpace() {
return systemDriveFreeSpace;
}
public void setSystemDriveFreeSpace(String value) {
this.systemDriveFreeSpace = value;
}
public Double getHighMemUsage() {
return highMemUsage;
}
public void setHighMemUsage(Double value) {
this.highMemUsage = value;
}
public String getHighCPUUsage() {
return highCPUUsage;
}
public void setHighCPUUsage(String value) {
this.highCPUUsage = value;
}
public SATCHBResponse.TopLevelArray.Information.Other71A5083EDC91460C956878CB755731AE getOther71A5083EDC91460C956878CB755731AE() {
return other71A5083EDC91460C956878CB755731AE;
}
public void setOther71A5083EDC91460C956878CB755731AE(SATCHBResponse.TopLevelArray.Information.Other71A5083EDC91460C956878CB755731AE value) {
this.other71A5083EDC91460C956878CB755731AE = value;
}
@JsonPropertyOrder({
"source",
"type",
"status"
})
public static class Other71A5083EDC91460C956878CB755731AE {
@JsonProperty("Source")
protected String source;
@JsonProperty("Type")
protected String type;
@JsonProperty("Status")
protected String status;
public String getSource() {
return source;
}
public void setSource(String value) {
this.source = value;
}
public String getType() {
return type;
}
public void setType(String value) {
this.type = value;
}
public String getStatus() {
return status;
}
public void setStatus(String value) {
this.status = value;
}
}
}
@JsonPropertyOrder({
"schemaVersion",
"agentVersion",
"serviceTag",
"model",
"registered",
"osVersion",
"spVersion",
"status",
"utcDate",
"biosVersion",
"description"
})
public static class MetaData {
@JsonProperty("SchemaVersion")
protected String schemaVersion;
@JsonProperty("AgentVersion")
protected String agentVersion;
@JsonProperty("ServiceTag")
protected String serviceTag;
@JsonProperty("Model")
protected String model;
@JsonProperty("Registered")
protected String registered;
@JsonProperty("OSVersion")
protected String osVersion;
@JsonProperty("SPVersion")
protected String spVersion;
@JsonProperty("Status")
protected String status;
@JsonProperty("UTCDate")
protected String utcDate;
@JsonProperty("BIOSVersion")
protected String biosVersion;
@JsonProperty("Description")
protected String description;
public String getSchemaVersion() {
return schemaVersion;
}
public void setSchemaVersion(String value) {
this.schemaVersion = value;
}
public String getAgentVersion() {
return agentVersion;
}
public void setAgentVersion(String value) {
this.agentVersion = value;
}
public String getServiceTag() {
return serviceTag;
}
public void setServiceTag(String value) {
this.serviceTag = value;
}
public String getModel() {
return model;
}
public void setModel(String value) {
this.model = value;
}
public String getRegistered() {
return registered;
}
public void setRegistered(String value) {
this.registered = value;
}
public String getOSVersion() {
return osVersion;
}
public void setOSVersion(String value) {
this.osVersion = value;
}
public String getSPVersion() {
return spVersion;
}
public void setSPVersion(String value) {
this.spVersion = value;
}
public String getUTCDate() {
return utcDate;
}
public void setUTCDate(String value) {
this.utcDate = value;
}
public String getBIOSVersion() {
return biosVersion;
}
public void setBIOSVersion(String value) {
this.biosVersion = value;
}
public String getStatus() {
return status;
}
public void setStatus(String value) {
this.status = value;
}
public String getDescription() {
return description;
}
public void setDescription(String value) {
this.description = value;
}
}
}
}
Error ：
2018-07-12 15：40：00.876 ERROR 6044 --- [nio-8080-exec-1] oaccC [ . [ . [/] . [dispatcherServlet]：Servlet中的Servlet.service（）[dispatcherServlet] with path []抛出异常[请求处理失败;嵌套异常是org.springframework.web.client.RestClientException：提取类型[class com.example.demo.SATCHBResponse]和内容类型[application / json; charset = UTF-8]的响应时出错;嵌套异常是org.springframework.http.converter.HttpMessageNotReadableException：JSON解析错误：无法从START_ARRAY标记中反序列化com.example.demo.SATCHBResponse的实例;嵌套异常是com.fasterxml.jackson.databind.exc.MismatchedInputException：无法在[Source：（PushbackInputStream）;中的START_ARRAY标记中反序列化com.example.demo.SATCHBResponse的实例 . line：2，column：2]] with root cause com.fasterxml.jackson.databind.exc.MismatchedInputException：无法反序列化
com.example.demo.SATCHBResponse的实例
[Source：（PushbackInputStream）的START_ARRAY标记;在com.fasterxml的com.fasterxml.jackson.databind.exc.MismatchedInputException.from（MismatchedInputException.java:63）〜[jackson-databind-2.9.6.jar：2.9.6]的第2行，第2列：第2行 . jackson.databind.DeserializationContext.reportInputMismatch（DeserializationContext.java:1342）〜[jackson-databind-2.9.6.jar：2.9.6] at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken（DeserializationContext.java:1138)~ [jackson-databind-2.9.6.jar：2.9.6] at com.fasterxml.jackson.databind.DeserializationContext.handleUnexpectedToken（DeserializationContext.java:1092）〜[jackson-databind-2.9.6.jar：2.9.6] at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromArray（BeanDeserializerBase.java:1461）〜[jackson-databind-2.9.6.jar：2.9.6] at com.fasterxml.jackson.databind.deser.BeanDeserializer . _deserializeOther（BeanDeserializer.java:185)~ [jackson-databind-2.9.6.jar：2.9.6] at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize（BeanDeserializer.java:161)~ [jackson-dat abind-2.9.6.jar：2.9.6] com的com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose（ObjectMapper.java:4013）〜[jackson-databind-2.9.6.jar：2.9.6] . 在org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType（AbstractJackson2HttpMessageConverter.java）中的fasterxml.jackson.databind.ObjectMapper.readValue（ObjectMapper.java：3084）〜[jackson-databind-2.9.6.jar：2.9.6] ：235）〜[spring-web-5.0.7.RELEASE.jar：5.0.7.RELEASE] org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read（AbstractJackson2HttpMessageConverter.java:223)~ [spring-web- 5.0.7.RELEASE.jar：5.0.7.RELEASE]在org.springframework.web.client.HttpMessageConverterExtractor.extractData（HttpMessageConverterExtractor.java:100）〜[spring-web-5.0.7.RELEASE.jar：5.0.7 .RELEASE] org.springframework.web.client.RestTemplate $ responseEntityResponseExtractor.extractData（RestTemplate.java:991）〜[spring-web-5.0.7.RELEASE.jar：5.0.7.RELEASE] org.springframework.web .client.RestTemplate $ RES org.springframework.web.client.RestTemplate.doExecute（RestTemplate.java:725）中的ponseEntityResponseExtractor.extractData（RestTemplate.java:974）〜[spring-web-5.0.7.RELEASE.jar：5.0.7.RELEASE]〜 [spring-web-5.0.7.RELEASE.jar：5.0.7.RELEASE]在org.springframework.web.client.RestTemplate.execute（RestTemplate.java:680）〜[spring-web-5.0.7.RELEASE . jar：5.0.7.RELEASE]在com的org.springframework.web.client.RestTemplate.exchange（RestTemplate.java:600）〜[spring-web-5.0.7.RELEASE.jar：5.0.7.RELEASE] . 示例.demo.RestConsumerNewApplication.getHBDetails（RestConsumerNewApplication.java:49）〜[classes /：na] at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）〜[na：1.8.0_171] at sun.reflect.NativeMethodAccessorImpl.invoke（未知来源）〜[na：1.8.0_171] at sun.reflect.DelegatingMethodAccessorImpl.invoke（Unknown Source）〜[na：1.8.0_171] at java.lang.reflect.Method.invoke（Unknown Source）〜[na：1.8 .0_171] org.springframework.web.method.support.InvocableHandlerMethod.doInvoke（InvocableHandlerMethod）的.java：209）
1 回答
试试
ResponseEntity<List<TopLevelArray>> result = restTemplate.exchange(<>, HttpMethod.GET, entity, new ParameterizedTypeReference<List<TopLevelArray>>() {});