我正在尝试创建春季休息服务。我的 servlet.xml 如下所示:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/>
<!-- Database Configuration -->
<import resource="classpath:DataSource.xml"/>
<import resource="classpath:Hibernate.xml"/>
<!-- Beans Declaration -->
<import resource="classpath:Employee.xml"/>
<context:component-scan base-package="com.nilenium.service.controller" />
<mvc:annotation-driven />
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="jsonConverter"/>
<ref bean="marshallingHttpMessageConverter"/>
</list>
</property>
</bean>
<bean id="jsonConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"></bean>
<bean id="xstreamMarshaller" class="org.springframework.oxm.xstream.XStreamMarshaller">
<property name="autodetectAnnotations" value="true"/>
<property name="annotatedClasses">
<list>
<value>com.nilenium.employee.model.Employee</value>
<value>com.nilenium.employee.model.EmployeeRecord</value>
</list>
</property>
</bean>
<bean id="marshallingHttpMessageConverter"
class="org.springframework.http.converter.xml.MarshallingHttpMessageConverter">
<property name="marshaller" ref="xstreamMarshaller"/>
<property name="unmarshaller" ref="xstreamMarshaller"/>
</bean>
<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="order" value="1" />
<property name="ignoreAcceptHeader" value="true" />
<property name="defaultContentType" value="application/json" />
<property name="mediaTypes">
<map>
<entry key="json" value="application/json" />
<entry key="xml" value="application/xml" />
</map>
</property>
<property name="defaultViews">
<list>
<!-- JSON View -->
<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
<!-- XML View -->
<bean class="org.springframework.web.servlet.view.xml.MarshallingView">
<constructor-arg>
<bean class="org.springframework.oxm.xstream.XStreamMarshaller">
<property name="autodetectAnnotations" value="true"/>
<property name="aliases">
<props>
<prop key="employee">com.nilenium.employee.model.Employee</prop>
<prop key="employee">com.nilenium.employee.model.EmployeeRecord</prop>
</props>
</property>
</bean>
</constructor-arg>
</bean>
</list>
</property>
</bean>
</beans>
我的模型类是这样的:
package com.nilenium.employee.model;
import java.io.Serializable;
import org.codehaus.jackson.annotate.JsonProperty;
import org.codehaus.jackson.map.annotate.JsonRootName;
import com.thoughtworks.xstream.annotations.XStreamAlias;
@XStreamAlias("employee")
public class Employee implements Serializable {
private static final long serialVersionUID = 1L;
private int employeeId;
private String employeeName;
public int getEmployeeId() {
return employeeId;
}
public void setEmployeeId(int employeeId) {
this.employeeId = employeeId;
}
public String getEmployeeName() {
return employeeName;
}
public void setEmployeeName(String employeeName) {
this.employeeName = employeeName;
}
public Employee(int employeeId, String employeeName)
{
this.employeeId = employeeId;
this.employeeName = employeeName;
}
public Employee() {
}
}
我的服务控制器类是这样的:
package com.nilenium.service.controller;
import java.util.List;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import com.nilenium.employee.bo.EmployeeBo;
import com.nilenium.employee.model.Employee;
import com.nilenium.employee.model.EmployeeRecord;
@Controller
@RequestMapping("/Service")
public class NileniumServiceController {
@Autowired
private EmployeeBo employeeBo;
@ExceptionHandler
public String exceptionHandler(Exception e){
return "serviceError";
}
@RequestMapping(value = "employeeId/{employeeId}", method = RequestMethod.GET, headers = "Accept=application/xml, application/json")
public Employee getEmployeeName(@PathVariable int employeeId,
HttpServletResponse resp,
ModelMap model) {
// System.out.println("Emp Name : " + employeeName);
Employee empReturned = new Employee();
empReturned.setEmployeeId(employeeId);
empReturned.setEmployeeName("Demo Name");
return empReturned;
}
@RequestMapping(value = "/employees", method = RequestMethod.GET, headers = "Accept=application/xml, application/json")
public EmployeeRecord getAllEmployeeDetails(HttpServletResponse resp,
ModelMap model) {
List<Employee> empListReturned = employeeBo.getAllEmployee();
EmployeeRecord eRecords = new EmployeeRecord();
eRecords.setEmployeeList(empListReturned);
return eRecords;
}
@RequestMapping(value = "/storeemployee",method = RequestMethod.POST, headers = {"Accept=text/xml, application/json"})
public Employee storeEmpRecord(@RequestBody Employee employee,HttpServletResponse resp,
ModelMap model)
{
System.out.println("Emp Id received : "+employee.getEmployeeId());
System.out.println("Emp Name received : "+employee.getEmployeeName());
// Employee empReturned = employeeBo.findByEmployeeId(1);
return employee;
}
}
当我尝试将 xml 发布到storeEmpRecord
方法时,xstream marshaller 无法将 xml 请求转换为相应的对象(Employee
对象)。
我的测试客户端是这样的:
package com.nilenium.test;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.URISyntaxException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpException;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.DefaultHttpClient;
import org.springframework.aop.framework.adapter.DefaultAdvisorAdapterRegistry;
import com.nilenium.employee.model.Employee;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
public class RestPostTest {
public static void main(String[] args) {
Employee emp = new Employee();
emp.setEmployeeId(1);
emp.setEmployeeName("Nilalohita");
XStream xStream = new XStream(new DomDriver());
xStream.alias("employee", Employee.class);
System.out.println(xStream.toXML(emp));
String xmlBody = xStream.toXML(emp);
HttpClient client = new DefaultHttpClient();
String jsonDemo = "{\"employeeId\":2,\"employeeName\":\"He-Man\"}";
try {
HttpPost post = new HttpPost("http://localhost:8080/SampleMaven/Service/storeemployee");
// post.addHeader("Accept", "application/json");
// post.addHeader("Content-Type", "application/json");
post.addHeader("Accept", "application/xml");
post.addHeader("Content-Type", "application/xml");
StringEntity entity = new StringEntity(xmlBody, "UTF-8");
// entity.setContentType("application/json");
entity.setContentType("application/xml");
post.setEntity(entity);
HttpResponse response = client.execute(post);
BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
String line = "";
while ((line = rd.readLine()) != null) {
System.out.println(line);
}
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (HttpException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
如果我做错了什么,请告诉我。使用@XMLroot
Employee 类而不是@XStreamAlias("employee")
.
我收到以下错误。完整的堆栈跟踪是这样的
Caused by:</h3><pre>javax.servlet.ServletException: Unable to locate object to be marshalled in model: {}
at org.springframework.web.servlet.view.xml.MarshallingView.renderMergedOutputModel(MarshallingView.java:100)
at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)
at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:324)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:648)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:205)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)