我正在研究带有Spring Boot和Hibernate的Restful API。 因此,我尝试使用JUnit测试我的学习API。 但是,会发生错误。 (它将显示在下面。)
我在StackOverflow中发现了相同的问题,并尝试了。
但是,它们仍然存在。
当我在User类的site变量上使用.native
时,会发生另一个错误。
这是我的模型课程。
@JsonManagedReference
@Entity
@Table(name = "users")
@EntityListeners(AuditingEntityListener.class)
public class User {
private String username;
private String password;
private List<Site> sites = new ArrayList<Site>();
public User() {
}
public User(String username, String password) {
setUsername(username);
setPassword(password);
}
@Id
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
@Column(name = "password", nullable = false)
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@OneToMany(cascade = CascadeType.ALL)
public List<Site> getSites() {
return sites;
}
public void setSites(List<Site> sites) {
this.sites = sites;
}
public void addSite(Site site) {
this.sites.add(site);
}
}
这是我的测试代码。
@Entity
@Table(name = "sites")
@EntityListeners(AuditingEntityListener.class)
@IdClass(Site.class)
//@JsonDeserialize(as = User.class)
public class Site implements Serializable{
private long id;
private User user;
// private String username;
private String siteURL;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
@ManyToOne
@JoinColumn(name="username", referencedColumnName = "username")
@JsonIgnoreProperties
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
// @Column(name="username")
// public String getUsername() {
// return username;
// }
//
// public void setUsername(String username) {
// this.username = username;
// }
@Column(name = "siteURL", nullable = false)
public String getSiteURL() {
return siteURL;
}
public void setSiteURL(String siteName) {
this.siteURL = siteName;
}
}
这是第一个错误代码。 (它可能具有无限递归。)
@RunWith(SpringRunner.class)
@SpringBootTest(classes = Application.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class userTest {
@Autowired
private TestRestTemplate restTemplate;
@LocalServerPort
private int port;
private String getRootUrl() {
return "http://localhost:" + port;
}
@Test
public void contextLoads() {
}
......
@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.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());
}
}
}
这是另一条错误消息。使用org.springframework.web.client.RestClientException: Error while extracting response for type [class com.t3q.userMange.model.User] and content type [application/json;charset=UTF-8]; nested exception is org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize instance of `java.lang.String` out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.lang.String` out of START_OBJECT token
at [Source: (PushbackInputStream); line: 1, column: 79891] (through reference chain: com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["password"])
at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:117)
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)
Caused by: org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot deserialize instance of `java.lang.String` out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.lang.String` out of START_OBJECT token
at [Source: (PushbackInputStream); line: 1, column: 79891] (through reference chain: com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]-
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:245)
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:227)
at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:102)
... 38 more
Caused by: com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of `java.lang.String` out of START_OBJECT token
at [Source: (PushbackInputStream); line: 1, column: 79891] (through reference chain: com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]->com.t3q.userMange.model.Site["user"]->com.t3q.userMange.model.User["sites"]->java.util.ArrayList[0]-
时。
@JsonManagedReference
如何解决此问题? 救救我。