CASERESTful Web服務調用使用Jersey客戶端2.2版
我試圖獲取用戶數據使用REST服務Servlet過濾器。
的pom.xml
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet</artifactId>
<version>2.2</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-client</artifactId>
<version>2.2</version>
<scope>provided</scope>
</dependency>
CODE
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
Client client = ClientBuilder.newClient(new ClientConfig());
String entity = client.target("http://localhost:8080/insame/webresources/com.insame.entity.users")
.path("count")
.request(MediaType.TEXT_PLAIN)
.get(String.class);
System.out.println("entity-------->" +entity);
REST:
@GET
@Path("count")
@Produces("text/plain")
public String countREST() {
return String.valueOf(super.count());
}
問題
javax.ws.rs.ProcessingException: java.net.SocketException: Unexpected end of file from server
at org.glassfish.jersey.client.HttpUrlConnector.apply(HttpUrlConnector.java:202)
at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:215)
at org.glassfish.jersey.client.JerseyInvocation$2.call(JerseyInvocation.java:650)
WARNING: StandardWrapperValve[com.insame.service.ApplicationConfig]: Servlet.service() for servlet com.insame.service.ApplicationConfig threw exception
javax.ws.rs.InternalServerErrorException: HTTP 500 Internal Server Error
at org.glassfish.jersey.client.JerseyInvocation.convertToException(JerseyInvocation.java:904)
at org.glassfish.jersey.client.JerseyInvocation.translate(JerseyInvocation.java:749)
at org.glassfish.jersey.client.JerseyInvocation.access$500(JerseyInvocation.java:88)
at org.glassfish.jersey.client.JerseyInvocation$2.call(JerseyInvocation.java:650)
問題
0)什麼是錯在我的代碼?
1)使用 REST + JPA從servlet過濾器獲取數據的最明智的方法是什麼?
2)如果還有其他方法可以做到這一點,我的意思是, 請告訴我嗎?
3)爲Jersey客戶端的唯一途徑
4)我怎樣才能得到 的EntityManager並直接從過濾器 沒有Jersey客戶端調用REST服務?
新澤西文檔和示例: http://jersey.java.net/documentation/latest/user-guide.html#d0e2481
感謝, 薩米