错误：无法提取响应：没有合适的HttpMessageConverter

时间：2017-06-05 05:21:10

标签： spring spring-mvc spring-boot

我得到了上面提到的错误：

控制器：

@Component
public class NiftyController {

@Autowired
private RestProxyTemplate restTemplate;



@Autowired
private NiftyDAO niftyDAO;

int count=1;




@Scheduled(fixedDelay=5000)
//@Scheduled(cron="*/5 * * * * ?")
public void loadNiftyData() throws URISyntaxException {


    System.out.println("Method executed at every 5 seconds. Current time is : "+ new Date() );
    System.out.println("Executed  " +count++ +"  Times");

    URI uri = new URI("https://www.nseindia.com/live_market/dynaContent/live_watch/stock_watch/niftyStockWatch.json");
    ResponseEntity<NiftyDTO> niftyResponse = restTemplate.getRestTemplate().exchange(uri, HttpMethod.GET, null, NiftyDTO.class);

    NiftyDTO nifties = niftyResponse.getBody();
    System.out.println(nifties.getTrdVolumesum());
    //List<Nifty> saveNifty = niftyDAO.save(nifties);
    //return (Nifty) nifties;
}
}

我想从上面的链接中获取数据并保存在数据库中

DTO课程

@JsonIgnoreProperties({"latestData","data"})
public class NiftyDTO {

private float trdVolumesumMil;

private String time;

private int declines;

private float trdValueSum;

private float trdValueSumMil;

private int unchanged;

private float trdVolumesum;

private int advances;

public float getTrdVolumesumMil() {
    return trdVolumesumMil;
}

public void setTrdVolumesumMil(float trdVolumesumMil) {
    this.trdVolumesumMil = trdVolumesumMil;
}

public String getTime() {
    return time;
}

public void setTime(String time) {
    this.time = time;
}

public int getDeclines() {
    return declines;
}

public void setDeclines(int declines) {
    this.declines = declines;
}

public float getTrdValueSum() {
    return trdValueSum;
}

public void setTrdValueSum(float trdValueSum) {
    this.trdValueSum = trdValueSum;
}

public float getTrdValueSumMil() {
    return trdValueSumMil;
}

public void setTrdValueSumMil(float trdValueSumMil) {
    this.trdValueSumMil = trdValueSumMil;
}

public int getUnchanged() {
    return unchanged;
}

public void setUnchanged(int unchanged) {
    this.unchanged = unchanged;
}

public float getTrdVolumesum() {
    return trdVolumesum;
}

public void setTrdVolumesum(float trdVolumesum) {
    this.trdVolumesum = trdVolumesum;
}

public int getAdvances() {
    return advances;
}

public void setAdvances(int advances) {
    this.advances = advances;
}
}

RestProxyTemplate：

@Component
public final class RestProxyTemplate {


RestTemplate restTemplate;

@PostConstruct
public void init(){
    restTemplate = new RestTemplate();
    SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
    InetSocketAddress address = new InetSocketAddress("MY PROXY GOES HERE",8080);
    Proxy proxy = new Proxy(Proxy.Type.HTTP,address);
    factory.setProxy(proxy);

    restTemplate.setRequestFactory(factory);
}

public RestTemplate getRestTemplate() {
    return restTemplate;
}
}

错误日志：

Method executed at every 5 seconds. Current time is : Mon Jun 05 10:45:38 IST 2017
Executed  1  Times
2017-06-05 10:45:38.141  INFO 108988 --- [           main] 
s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8090 (http)
2017-06-05 10:45:38.153  INFO 108988 --- [           main] 
com.MyApplication.portfolio.PMSApplication      : Started PMSApplication in 5.041 seconds (JVM running for 5.573)
2017-06-05 10:45:39.028 ERROR 108988 --- [pool-2-thread-1] o.s.s.s.TaskUtils$LoggingErrorHandler    : Unexpected error occurred in scheduled task.

org.springframework.web.client.RestClientException: Could not extract response: no suitable HttpMessageConverter found for response type [class com.MyApplication.portfolio.controller.NiftyDTO] and content type [text/plain]
at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:109) ~[spring-web-4.2.8.RELEASE.jar:4.2.8.RELEASE]
at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:835) ~[spring-web-4.2.8.RELEASE.jar:4.2.8.RELEASE]
at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:819) ~[spring-web-4.2.8.RELEASE.jar:4.2.8.RELEASE]
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:599) ~[spring-web-4.2.8.RELEASE.jar:4.2.8.RELEASE]
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:572) ~[spring-web-4.2.8.RELEASE.jar:4.2.8.RELEASE]
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:493) ~[spring-web-4.2.8.RELEASE.jar:4.2.8.RELEASE]
at com.MyApplication.portfolio.controller.NiftyController.loadNiftyData(NiftyController.java:44) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_92]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_92]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_92]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_92]
at org.springframework.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65) ~[spring-context-4.2.8.RELEASE.jar:4.2.8.RELEASE]
at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54) ~[spring-context-4.2.8.RELEASE.jar:4.2.8.RELEASE]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_92]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_92]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_92]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [na:1.8.0_92]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_92]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_92]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_92]

我找到了响应类型的No Sutiable HttpMessageConverter，有人会建议可能的解决方案吗？

1 个答案:

答案 0 :(得分：0)

您需要处理application / json而不是text / plain。

#include <stdio.h>

int main(void)
{
    int arr[11] = { 1, 1, 2, 3, 4, 5, 4, 7, 8, 9, 8 };
    int col[11];
    int i;
    int j;
    int k;
    int ctr = 0;

    for (i = 0; i < 11; i++)
    {
        for (j = i + 1; j < 10; j++)
        {
            if (arr[i] == arr[j])
            {
                i++;
            }
        }
        printf("%d", arr[i]);
    }

    getch();
    return 0;
}

代码来自the docs并稍加修改

更新：更改代码正常工作但有另一个错误导致：private static void temp() { HttpHeaders requestHeaders = new HttpHeaders(); // requestHeaders.setAccept(Collections.singletonList(new MediaType("application","json"))); requestHeaders.setAccept(Collections.singletonList(new MediaType("text","plain"))); HttpEntity<?> requestEntity = new HttpEntity<>(requestHeaders); // Create a new RestTemplate instance RestTemplate restTemplate = new RestTemplate(); // Add the Jackson message converter MappingJackson2HttpMessageConverter mc = new MappingJackson2HttpMessageConverter() ; mc.setSupportedMediaTypes(Collections.singletonList(new MediaType("text","plain"))); restTemplate.getMessageConverters().add(mc); String url = "https://www.nseindia.com/live_market/dynaContent/live_watch/stock_watch/niftyStockWatch.json"; ResponseEntity<NiftyDTO> responseEntity = restTemplate.exchange(url, HttpMethod.GET, requestEntity, NiftyDTO.class); NiftyDTO res = responseEntity.getBody(); System.out.println(res); }

您需要使用com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not deserialize value of type float from String "4,092.10": not a valid Float value分隔符修复数据的反序列化。

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