我正在尝试使用Rest服务生成JSON输出。 我正在使用Jersey实现休息。 在Tomcat 7.0上执行的项目。 我不是在使用Maven。 以下是休息服务代码
package com.ibm.rest;
import java.net.URI;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.atomic.AtomicInteger;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.PUT;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Response;
@Path("/customers")
public class CustomerResource {
private static Map<Integer, Customer> customerDB =
new ConcurrentHashMap<Integer, Customer>();
private AtomicInteger idCounter = new AtomicInteger();
public CustomerResource() {
}
@POST
@Consumes("application/xml")
public Response createCustomer(Customer customer)
{
customer.setId(idCounter.incrementAndGet());
customerDB.put(customer.getId(), customer);
System.out.println("Created Customer" + customer.getId());
return Response.created(URI.create("/RestProject/rest/customers/"+ customer.getId())).build();
}
@GET
@Path("{id}")
@Produces("application/xml")
public Customer getCustomer(@PathParam("id") int id)
{
Customer customer = customerDB.get(id);
if(customer == null)
{
throw new WebApplicationException(Response.Status.NOT_FOUND);
}
return customer;
}
//Create Json object
@GET
@Path("{id}")
@Produces("application/json")
public Customer getCustomerJson(@PathParam("id") int id)
{
Customer customer = customerDB.get(id);
if(customer == null)
{
throw new WebApplicationException(Response.Status.NOT_FOUND);
}
return customer;
}
@PUT
@Path("{id}")
@Consumes("application/xml")
public void updateCustomer(@PathParam("id") int id,Customer update){
Customer customer = customerDB.get(id);
if(customer == null)
{
throw new WebApplicationException(Response.Status.NOT_FOUND);
}
customer.setFirstName(update.getFirstName());
customer.setLastNAme(update.getLastNAme());
customer.setStreet(update.getStreet());
customer.setCity(update.getCity());
customer.setZip(update.getZip());
customer.setState(update.getState());
customer.setCountry(update.getCountry());
}
}
项目中使用的客户域对象
package com.ibm.rest;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement(name="customer")
public class Customer {
private int id;
private String firstName,lastNAme,street,city,state,zip,country;
@XmlAttribute
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@XmlElement(name="first-name")
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
@XmlElement(name="last-name")
public String getLastNAme() {
return lastNAme;
}
public void setLastNAme(String lastNAme) {
this.lastNAme = lastNAme;
}
@XmlElement
public String getStreet() {
return street;
}
public void setStreet(String street) {
this.street = street;
}
@XmlElement
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
@XmlElement
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
@XmlElement
public String getZip() {
return zip;
}
public void setZip(String zip) {
this.zip = zip;
}
@XmlElement
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
}
项目中使用的Web.xml
<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>jersey-servlet</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>com.ibm.rest;org.codehaus.jackson.jaxrs</param-value>
</init-param>
<init-param>
<param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
<param-value>true</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>jersey-servlet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
</web-app>
最后这是客户端java程序
package com.ibm.rest;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.Reader;
import java.net.HttpURLConnection;
import java.net.URL;
public class CustomerClientJSONApplication {
public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.println("======Create a new Customer=======");
String newCustomer = "<customer>"
+ "<first-name>Vishwanath</first-name>"
+ "<last-name>Rao</last-name>"
+ "<street>tc palya</street>"
+ "<city>Bangalore</city>"
+ "<state>Karnataka</state>"
+ "<zip>560036</zip>"
+ "<country>India</country>"
+"</customer>";
try
{
URL postUrl =
new URL("http://localhost:8080/RestProject/rest/customers");
HttpURLConnection connection =(HttpURLConnection)postUrl.openConnection();
connection.setDoOutput(true);
connection.setInstanceFollowRedirects(false);
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-type", "application/xml");
OutputStream os = connection.getOutputStream();
os.write(newCustomer.getBytes());
os.flush();
System.out.println(connection.getResponseCode());
System.out.println(" Location--->" + connection.getHeaderField("Location"));
connection.disconnect();
System.out.println("======Get Created Customer=======");
URL getUrl =
new URL("http://localhost:8080/RestProject/rest/customers/1");
HttpURLConnection connection1 =(HttpURLConnection)getUrl.openConnection();
connection1 =(HttpURLConnection)getUrl.openConnection();
connection1.setRequestMethod("GET");
connection1.setRequestProperty("Accept", "application/json");
System.out.println("Content-Type" + connection1.getContentType());
BufferedReader reader = new BufferedReader(
new InputStreamReader(connection1.getInputStream()));
String line= reader.readLine();
while(line!=null)
{
System.out.println(line);
line = reader.readLine();
}
connection1.disconnect();
/*System.out.println("======Update exising Customer=======");
String updateCustomer = "<customer>"
+ "<first-name>Prasanna</first-name>"
+ "<last-name>Hinge</last-name>"
+ "<street>M G Road</street>"
+ "<city>Bangalore</city>"
+ "<state>Karnataka</state>"
+ "<zip>560036</zip>"
+ "<country>India</country>"
+"</customer>";
URL updateUrl =
new URL("http://localhost:9080/RestProject/rest/customers/1");
connection =(HttpURLConnection)updateUrl.openConnection();
connection.setDoOutput(true);
connection.setRequestMethod("PUT");
connection.setRequestProperty("Content-type", "application/xml");
OutputStream os1 = connection.getOutputStream();
os1.write(updateCustomer.getBytes());
os1.flush();
System.out.println(connection.getResponseCode());
//System.out.println(" Location" + connection.getHeaderField("Location"));
connection.disconnect();
System.out.println("======Get updated Customer=======");
URL getUpdateUrl =
new URL("http://localhost:9080/RestProject/rest/customers/1");
connection =(HttpURLConnection)getUpdateUrl.openConnection();
connection.setRequestMethod("GET");
System.out.println("Content-Type" + connection.getContentType());
BufferedReader reader1 = new BufferedReader(
new InputStreamReader(connection.getInputStream()));
String line1= reader1.readLine();
while(line1!=null)
{
System.out.println(line1);
line1 = reader1.readLine();
}
connection.disconnect();*/
}
catch(Exception e)
{
System.out.println(e);
}
}
}
在Tomcat上部署Rest服务后执行客户端java程序在Tomcat控制台上获得以下错误
创建了Customer1 Jul 08,2015 6:51:29 am org.glassfish.jersey.message.internal.WriterInterceptorExecutor $ TerminalWriterInterceptor aroundWriteTo 严重：找不到媒体类型= application / json的MessageBodyWriter，类型=类com.ibm.rest.Customer，genericType = class com.ibm.rest.Customer。
但是在Java控制台上获取错误如下
**======Create a new Customer=======
201
Location--->http://localhost:8080/RestProject/rest/customers/1
======Get Created Customer=======
Content-Typetext/html;charset=utf-8
java.io.IOException: Server returned HTTP response code: 500 for URL: http://localhost:8080/RestProject/rest/customers/1**
在网上为Jersey -Jackson集成api尝试了所有可能的解决方案，但没有出去
请告诉我还缺少什么。
以下是项目中使用的罐子
-aopalliance-repackaged-2.3.0-b10.jar
-asm-debug-all-5.0.2.jar
-hk2-api-2.3.0-b10.jar
-hk2-locator-2.3.0-b10.jar
-hk2-utils-2.3.0-b10.jar
-jackson-all-1.9.0.jar
-javassist-3.18.1-GA.jar
-javax.annotation-api-1.2.jar
-javax.inject-2.3.0-b10.jar
-javax.servlet-api-3.0.1.jar
-javax.ws.rs-api-2.0.1.jar
-jaxb-api-2.2.7.jar
-jersey-client.jar
-jersey-common.jar
-jersey-container-servlet-core.jar
-jersey-container-servlet.jar
-jersey-guava-2.13.jar
-jersey-server.jar
-json-simple.jar
-org.osgi.core-4.2.0.jar
-osgi-resource-locator-1.0.1.jar
-persistence-api-1.0.jar
-validation-api-1.1.0.Final.jar