我想使用Spring工具来消费REST服务，遵循this指南，但我遇到了连接问题。 我想使用GET方法访问REST服务。
我编写了这段代码来消费该服务。
package pack;
import static org.junit.Assert.assertTrue;
import java.util.HashMap;
import java.util.Map;
import javax.annotation.Generated;
import org.junit.Test;
import org.springframework.web.client.RestTemplate;
import com.fasterxml.jackson.annotation.JsonAnyGetter;
import com.fasterxml.jackson.annotation.JsonAnySetter;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;
public class RestUtilityTest {
@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder({
"time",
"milliseconds_since_epoch",
"date"
})
public class DateTime {
@JsonProperty("time")
private String time;
@JsonProperty("milliseconds_since_epoch")
private Integer milliseconds_since_epoch;
@JsonProperty("date")
private String date;
private Map<String, Object> additionalProperties = new HashMap<String, Object>();
@JsonProperty("time")
public String getTime() {
return time;
}
@JsonProperty("time")
public void setTime(String time) {
this.time = time;
}
@JsonProperty("milliseconds_since_epoch")
public Integer getMilliseconds_since_epoch() {
return milliseconds_since_epoch;
}
@JsonProperty("milliseconds_since_epoch")
public void setMilliseconds_since_epoch(Integer milliseconds_since_epoch) {
this.milliseconds_since_epoch = milliseconds_since_epoch;
}
@JsonProperty("date")
public String getDate() {
return date;
}
@JsonProperty("date")
public void setDate(String date) {
this.date = date;
}
@JsonAnyGetter
public Map<String, Object> getAdditionalProperties() {
return this.additionalProperties;
}
@JsonAnySetter
public void setAdditionalProperty(String name, Object value) {
this.additionalProperties.put(name, value);
}
}
@Test
public void getTest()
{
RestTemplate restTemplate = new RestTemplate();
DateTime datetime = restTemplate.getForObject("http://date.jsontest.com", DateTime.class);
assertTrue(datetime != null);
}
}
应用程序抛出以下异常堆栈。
org.springframework.web.client.ResourceAccessException: I/O error on GET request for "http://date.jsontest.com": Connection reset; nested exception is java.net.SocketException: Connection reset
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:524)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:472)
at org.springframework.web.client.RestTemplate.getForObject(RestTemplate.java:237)
at pack.RestUtilityTest.getTest(RestUtilityTest.java:95)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.net.SocketException: Connection reset
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at java.io.BufferedInputStream.fill(Unknown Source)
at java.io.BufferedInputStream.read1(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTPHeader(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
at sun.net.www.http.HttpClient.parseHTTP(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at java.net.HttpURLConnection.getResponseCode(Unknown Source)
at org.springframework.http.client.SimpleClientHttpResponse.getRawStatusCode(SimpleClientHttpResponse.java:47)
at org.springframework.http.client.AbstractClientHttpResponse.getStatusCode(AbstractClientHttpResponse.java:32)
at org.springframework.web.client.DefaultResponseErrorHandler.getHttpStatusCode(DefaultResponseErrorHandler.java:55)
at org.springframework.web.client.DefaultResponseErrorHandler.hasError(DefaultResponseErrorHandler.java:49)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:510)
... 26 more
我尝试了两个不同的网络连接来进行REST调用，所以这不是一个网络连接问题；此外，如果我从浏览器中访问该服务，我可以正确地获得响应。
可能是什么问题呢？
提前感谢您。