我正在研究带有Spring Boot和Hibernate的静态API。 因此，我为登录做了简单的Restful API。 但是，会发生RestClientException错误。
我在StackOverflow中找到了一些解决方案。一个是在restTemplate中创建HttpMessageConverter。另一个是在配置类文件中为HttpMessageConverter进行配置。
这是我的测试代码。
@Test
public void createDataset() {
// List<HttpMessageConverter<?>> messageConverters = new ArrayList<HttpMessageConverter<?>>();
// // Add the Jackson Message converter
// MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
// // Note: here we are making this converter to process any kind of response,
// // not only application/*json, which is the default behaviour
// converter.setSupportedMediaTypes(Collections.singletonList(
//// MediaType.ALL
//// MediaType.APPLICATION_JSON_UTF8
//// MediaType.APPLICATION_ATOM_XML
//// MediaType.APPLICATION_FORM_URLENCODED
//// MediaType.APPLICATION_JSON
//// MediaType.APPLICATION_OCTET_STREAM
//// MediaType.APPLICATION_PDF
//// MediaType.APPLICATION_PROBLEM_JSON
//// MediaType.APPLICATION_PROBLEM_JSON_UTF8
//// MediaType.APPLICATION_PROBLEM_XML
//// MediaType.APPLICATION_RSS_XML
// MediaType.APPLICATION_STREAM_JSON
//// MediaType.APPLICATION_XHTML_XML
// ));
// messageConverters.add(converter);
// restTemplate.getRestTemplate().setMessageConverters(messageConverters);
Site site1 = new Site();
site1.setSiteURL("www.t3q.com");
Site site2 = new Site();
site2.setSiteURL("www.t3q1.com");
User user1 = new User();
user1.setUsername("1111");
user1.setPassword("12131");
user1.addSite(site1);
user1.addSite(site2);
// site1.setUser(user1);
// site2.setUser(user1);
User user2 = new User();
user2.setUsername("2222");
user2.setPassword("1241");
Site site3 = new Site();
site3.setSiteURL("www.t3q.com");
user2.addSite(site3);
// site3.setUser(user2);
restTemplate.postForEntity(getRootUrl() + "/users", user1, User.class);
restTemplate.postForEntity(getRootUrl() + "/users", user2, User.class);
// restTemplate.postForEntity(getRootUrl() + "/sites", site1, Site.class);
// restTemplate.postForEntity(getRootUrl() + "/sites", site2, Site.class);
// restTemplate.postForEntity(getRootUrl() + "/sites", site3, Site.class);
User calledUser1 = restTemplate.getForObject(getRootUrl() + "/users/" + user1.getUsername(), User.class);
System.out.println("Username: " + calledUser1.getUsername() + ", Password: " + calledUser1.getPassword());
for (Site site : calledUser1.getSites()) {
System.out.println("Sign up site: " + site.getSiteURL());
}
User calledUser2 = restTemplate.getForObject(getRootUrl() + "/users/" + user2.getUsername(), User.class);
System.out.println("Username: " + calledUser2.getUsername() + ", Password: " + calledUser2.getPassword());
for (Site site : calledUser2.getSites()) {
System.out.println("Sign up site: " + site.getSiteURL());
}
}
这是错误代码。
org.springframework.web.client.RestClientException: Could not extract response: no suitable HttpMessageConverter found for response type [class com.t3q.userMange.model.User] and content type [application/json;charset=UTF-8]
at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:121)
at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:995)
at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:978)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:737)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:670)
at org.springframework.web.client.RestTemplate.postForEntity(RestTemplate.java:445)
at org.springframework.boot.test.web.client.TestRestTemplate.postForEntity(TestRestTemplate.java:506)
at userTest.userTest.createDataset(userTest.java:171)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)
当我使用上面测试代码（MediaType.ALL）的转换器时，出现了另一个错误。
java.lang.IllegalArgumentException: Content-Type cannot contain wildcard type '*'
at org.springframework.util.Assert.isTrue(Assert.java:118)
at org.springframework.http.HttpHeaders.setContentType(HttpHeaders.java:915)
at org.springframework.http.converter.AbstractHttpMessageConverter.addDefaultHeaders(AbstractHttpMessageConverter.java:256)
at org.springframework.http.converter.AbstractGenericHttpMessageConverter.write(AbstractGenericHttpMessageConverter.java:87)
at org.springframework.web.client.RestTemplate$HttpEntityRequestCallback.doWithRequest(RestTemplate.java:939)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:733)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:670)
at org.springframework.web.client.RestTemplate.postForEntity(RestTemplate.java:445)
at org.springframework.boot.test.web.client.TestRestTemplate.postForEntity(TestRestTemplate.java:506)
at userTest.userTest.createDataset(userTest.java:172)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:74)
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:84)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:89)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:41)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:541)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:763)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:463)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:209)
我该如何解决这个问题？