Java Can';“不要摆脱”;IllegalStateException:当前链的筛选器或servlet不支持异步操作;使用Jersey SSE的异常
我正在尝试使用Jersey的服务器发送事件配置基本广播服务器。我使用了官方文档中包含的示例代码:Java Can';“不要摆脱”;IllegalStateException:当前链的筛选器或servlet不支持异步操作;使用Jersey SSE的异常,java,rest,jersey,server-sent-events,Java,Rest,Jersey,Server Sent Events,我正在尝试使用Jersey的服务器发送事件配置基本广播服务器。我使用了官方文档中包含的示例代码: public class Broadcast { @Singleton @Path("broadcasting") public static class BroadcasterResource { private SseBroadcaster broadcaster = new SseBroadcaster(); /** * Server receives a m
public class Broadcast {
@Singleton
@Path("broadcasting")
public static class BroadcasterResource {
private SseBroadcaster broadcaster = new SseBroadcaster();
/**
* Server receives a message and broadcasts to its suscribers
* @param message
* @return
*/
@POST
@Produces(MediaType.TEXT_PLAIN)
@Consumes(MediaType.TEXT_PLAIN)
public String broadcastMessage(String message) {
OutboundEvent.Builder eventBuilder = new OutboundEvent.Builder();
OutboundEvent event = eventBuilder.name("message")
.mediaType(MediaType.TEXT_PLAIN_TYPE)
.data(String.class, message)
.build();
broadcaster.broadcast(event);
return "Message '" + message + "' has been broadcast.";
}
/**
* Suscribes the client to the broadcaster
* @return
*/
@GET
@Produces(SseFeature.SERVER_SENT_EVENTS)
public EventOutput listenToBroadcast() {
final EventOutput eventOutput = new EventOutput();
this.broadcaster.add(eventOutput);
return eventOutput;
}
}
}
web.xml:
<web-app id="TestSSE" version="3.0"
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">
<display-name>TestSSE</display-name>
<servlet>
<async-supported>true</async-supported>
<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.mycompany.testsse.sse</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>jersey-servlet</servlet-name>
<url-pattern>/v2/*</url-pattern>
</servlet-mapping>
</web-app>
TestSSE
真的
泽西servlet
org.glassfish.jersey.servlet.ServletContainer
jersey.config.server.provider.packages
com.mycompany.testsse.sse
1.
泽西servlet
/v2/*
和pom.xml:
http://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0
<groupId>com.mycompany</groupId>
<artifactId>TestSSE</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>TestSSE</name>
<properties>
<endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-server</artifactId>
<version>2.8</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-common</artifactId>
<version>2.8</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet-core</artifactId>
<version>2.8</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet</artifactId>
<version>2.8</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-sse</artifactId>
<version>2.8</version>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
<compilerArguments>
<endorseddirs>${endorsed.dir}</endorseddirs>
</compilerArguments>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<version>2.6</version>
<executions>
<execution>
<phase>validate</phase>
<goals>
<goal>copy</goal>
</goals>
<configuration>
<outputDirectory>${endorsed.dir}</outputDirectory>
<silent>true</silent>
<artifactItems>
<artifactItem>
<groupId>javax</groupId>
<artifactId>javaee-endorsed-api</artifactId>
<version>7.0</version>
<type>jar</type>
</artifactItem>
</artifactItems>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
com.mycompany
TestSSE
1.0-快照
战争
TestSSE
${project.build.directory}/project
UTF-8
爪哇
javaeewebapi
7
假如
org.glassfish.jersey.core
泽西服务器
2.8
org.glassfish.jersey.core
泽西公地
2.8
org.glassfish.jersey.containers
jersey容器servlet核心
2.8
org.glassfish.jersey.containers
jersey容器servlet
2.8
org.glassfish.jersey.media
泽西媒体公司
2.8
javax.ws.rs
javax.ws.rs-api
2
org.apache.maven.plugins
maven编译器插件
3.1
1.7
1.7
${annowed.dir}
org.apache.maven.plugins
maven战争插件
2.3
假的
org.apache.maven.plugins
maven依赖插件
2.6
验证
复制
${annowed.dir}
真的
爪哇
javaee认可的api
7
罐子
我试图将此web服务直接实现到正在开发的应用程序中,但由于无法使其正常工作,我创建了这个基本的maven web应用程序,只使用上面显示的代码,以便尝试隔离错误
应用程序按预期工作,但在收到GET请求(而不是POST)时总是抛出此异常。请注意,
标记已添加到servlet
我正在使用JavaEE7和Tomcat8.0.27.0如果更改
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd“
至http://java.sun.com/xml/ns/j2ee/web-app_3_0.xsd“
-注意3_0。如果这不起作用(看起来像一个旧名称空间),如您所说,名称空间似乎有问题,但我还无法找到问题所在。我想缓存中的无效/旧xsd文件可能会有问题。更改为3_0.xsd
会引发此错误:TargetNamespace.1:应为名称空间'http://java.sun.com/xml/ns/j2ee,但架构文档的目标命名空间是的http://java.sun.com/xml/ns/javaee“
并将url中的j2ee
更改为javaee
,我得到了cvc elt.1:找不到元素“web app”的声明
您可以去掉web.xml,只需使用@ApplicationPath(“/v2/*”)注释的ResourceConfig
子类即可
。您不需要执行任何其他操作。您的类将自动被拾取。您可以在构造函数中调用packages
,像初始化参数一样进行包扫描