我正在使用Spring 3构建两个应用程序。第一个应用程序是休息API，第二个是客户端。客户端必须创建一个预留。我收到了400 Bad Request错误，请帮忙。
客户端应用中的“预订”类：
package ma.ensias.agencecentrale.entities;
import java.io.Serializable;
import java.util.Collection;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.annotate.JsonIgnoreProperties;
import org.codehaus.jackson.annotate.JsonProperty;
@JsonIgnoreProperties(ignoreUnknown=true)
@Entity
@Table(name="reservations")
public class Reservation implements Serializable{
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Long idReservation;
private String date;
@ManyToOne
@JoinColumn(name="id_utilisateur")
private Utilisateur utilisateur;
@JsonIgnore
@ManyToMany(cascade=CascadeType.ALL)
@JoinTable(name="passager_reservation", joinColumns=@JoinColumn(name="id_reservation"), inverseJoinColumns=@JoinColumn(name="id_passager"))
private Collection<Passager> passagers;
@JsonIgnore
@ManyToMany(cascade=CascadeType.ALL)
@JoinTable(name="vol_reservation", joinColumns=@JoinColumn(name="id_reservation"), inverseJoinColumns=@JoinColumn(name="id_vol"))
private Collection<Vol> vols;
// Contructor without fields
public Reservation() {
super();
}
// contructor with date attribute
public Reservation(String date) {
super();
this.date = date;
}
// ----------------------- Getters and setters-------------------------------
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
@JsonProperty(value="client")
public Utilisateur getUtilisateur() {
return utilisateur;
}
public void setUtilisateur(Utilisateur utilisateur) {
this.utilisateur = utilisateur;
}
public Collection<Vol> getVols() {
return vols;
}
public void setVols(Collection<Vol> vols) {
this.vols = vols;
}
public Long getIdReservation() {
return idReservation;
}
}
其余客户：
// -------------------创建预订----------------------- ---------------------------------
@RequestMapping("/ajouterReservation")
private static void ajouterReservation(Reservation reservation) {
RestTemplate restTemplate = new RestTemplate();
Reservation addedRes = restTemplate.postForObject(REST_SERVICE_URI,reservation, Reservation.class);
}
提供商应用中的班级预订：
package ma.ensias.agencevoyage.entities;
import java.io.Serializable;
import java.util.Collection;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.annotate.JsonIgnoreProperties;
import org.codehaus.jackson.annotate.JsonProperty;
@JsonIgnoreProperties(ignoreUnknown=true)
@Entity
@Table(name="reservations")
public class Reservation implements Serializable{
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Long idReservation;
private String date;
@ManyToOne(cascade=CascadeType.ALL)
@JoinColumn(name="id_client")
private Client client;
@JsonIgnore
@ManyToMany(cascade=CascadeType.ALL)
@JoinTable(name="passager_reservation", joinColumns=@JoinColumn(name="id_reservation"), inverseJoinColumns=@JoinColumn(name="id_passager"))
private Collection<Passager> passagers;
@JsonIgnore
@ManyToMany(cascade=CascadeType.ALL)
@JoinTable(name="vol_reservation", joinColumns=@JoinColumn(name="id_reservation"), inverseJoinColumns=@JoinColumn(name="id_vol"))
private Collection<Vol> vols;
// Contructor without fields
public Reservation() {
super();
}
// contructor with date attribute
public Reservation(String date) {
super();
this.date = date;
}
// ----------------------- Getters and setters-------------------------------
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public Client getClient() {
return client;
}
public void setClient(Client client) {
this.client = client;
}
public Collection<Passager> getPassagers() {
return passagers;
}
public void setPassagers(Collection<Passager> passagers) {
this.passagers = passagers;
}
public Collection<Vol> getVols() {
return vols;
}
public void setVols(Collection<Vol> vols) {
this.vols = vols;
}
}
，控制器为： // -------------------创建预订-------------------------- ------------------------------
@RequestMapping(value = "/ajouterReservation", method = RequestMethod.POST, consumes="application/json")
public ResponseEntity<String> ajouterReservation(@RequestBody Reservation reservation) {
metier.ajouterReservation(reservation);
return new ResponseEntity(HttpStatus.CREATED);
}
我还使用post man对提供商进行了测试，但它正在运行。
我得到的错误如下：
GRAVE: Servlet.service() for servlet [appServlet] in context with path [/agencecentrale] threw exception [Request processing failed; nested exception is org.springframework.web.client.HttpClientErrorException: 415 Type de Support Non Supporté] with root cause
org.springframework.web.client.HttpClientErrorException: 415 Type de Support Non Supporté
at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:88)
at org.springframework.web.client.RestTemplate.handleResponseError(RestTemplate.java:532)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:488)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:446)
at org.springframework.web.client.RestTemplate.postForObject(RestTemplate.java:294)
at ma.ensias.agencecentrale.controllers.ReservationController.ajouterReservation(ReservationController.java:33)
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.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:838)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:650)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
答案 0 :(得分：2)
根本原因：问题在于提供程序控制器中设置的内容类型：
@RequestMapping(value = "/ajouterReservation", method = RequestMethod.POST, consumes="application/json")
public ResponseEntity<String> ajouterReservation(@RequestBody Reservation reservation)
解决方案1：在处理程序方法中删除consumes="application/json"
解决方案2：在进行其余调用之前相应地设置标题，并使用RestTemplate的交换方法，如下所示：
RestTemplate restTemplate = new RestTemplate();
HttpHeaders headers=new HttpHeaders();
headers.set("Content-Type", "application/json");
HttpEntity requestEntity=new HttpEntity(reservation, headers);
Reservation addedRes = restTemplate.exchange(REST_SERVICE_URI, HttpMethod.POST,requestEntity,Reservation.class);