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springboot项目添加websocket依赖后运行测试类报如下错误：
1 org.springframework.beans.factory.beancreationexception: error creating bean with name 'serverendpointexporter' defined in org.lwt.websocketservertestapplication: invocation of init method failed; nested exception is java.lang.illegalstateexception: javax.websocket.server.servercontainer not available 2 at org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.initializebean(abstractautowirecapablebeanfactory.java:1745) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 3 at org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.docreatebean(abstractautowirecapablebeanfactory.java:576) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 4 at org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.createbean(abstractautowirecapablebeanfactory.java:498) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 5 at org.springframework.beans.factory.support.abstractbeanfactory.lambda$dogetbean$0(abstractbeanfactory.java:320) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 6 at org.springframework.beans.factory.support.defaultsingletonbeanregistry.getsingleton(defaultsingletonbeanregistry.java:222) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 7 at org.springframework.beans.factory.support.abstractbeanfactory.dogetbean(abstractbeanfactory.java:318) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 8 at org.springframework.beans.factory.support.abstractbeanfactory.getbean(abstractbeanfactory.java:199) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 9 at org.springframework.beans.factory.support.defaultlistablebeanfactory.preinstantiatesingletons(defaultlistablebeanfactory.java:846) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 10 at org.springframework.context.support.abstractapplicationcontext.finishbeanfactoryinitialization(abstractapplicationcontext.java:863) ~[spring-context-5.1.4.release.jar:5.1.4.release] 11 at org.springframework.context.support.abstractapplicationcontext.refresh(abstractapplicationcontext.java:546) ~[spring-context-5.1.4.release.jar:5.1.4.release] 12 at org.springframework.boot.springapplication.refresh(springapplication.java:775) ~[spring-boot-2.1.2.release.jar:2.1.2.release] 13 at org.springframework.boot.springapplication.refreshcontext(springapplication.java:397) ~[spring-boot-2.1.2.release.jar:2.1.2.release] 14 at org.springframework.boot.springapplication.run(springapplication.java:316) ~[spring-boot-2.1.2.release.jar:2.1.2.release] 15 at org.springframework.boot.test.context.springbootcontextloader.loadcontext(springbootcontextloader.java:127) [spring-boot-test-2.1.2.release.jar:2.1.2.release] 16 at org.springframework.test.context.cache.defaultcacheawarecontextloaderdelegate.loadcontextinternal(defaultcacheawarecontextloaderdelegate.java:99) [spring-test-5.1.4.release.jar:5.1.4.release] 17 at org.springframework.test.context.cache.defaultcacheawarecontextloaderdelegate.loadcontext(defaultcacheawarecontextloaderdelegate.java:117) [spring-test-5.1.4.release.jar:5.1.4.release] 18 at org.springframework.test.context.support.defaulttestcontext.getapplicationcontext(defaulttestcontext.java:108) [spring-test-5.1.4.release.jar:5.1.4.release] 19 at org.springframework.test.context.web.servlettestexecutionlistener.setuprequestcontextifnecessary(servlettestexecutionlistener.java:190) [spring-test-5.1.4.release.jar:5.1.4.release] 20 at org.springframework.test.context.web.servlettestexecutionlistener.preparetestinstance(servlettestexecutionlistener.java:132) [spring-test-5.1.4.release.jar:5.1.4.release] 21 at org.springframework.test.context.testcontextmanager.preparetestinstance(testcontextmanager.java:246) [spring-test-5.1.4.release.jar:5.1.4.release] 22 at org.springframework.test.context.junit4.springjunit4classrunner.createtest(springjunit4classrunner.java:227) [spring-test-5.1.4.release.jar:5.1.4.release] 23 at org.springframework.test.context.junit4.springjunit4classrunner$1.runreflectivecall(springjunit4classrunner.java:289) [spring-test-5.1.4.release.jar:5.1.4.release] 24 at org.junit.internal.runners.model.reflectivecallable.run(reflectivecallable.java:12) [junit-4.12.jar:4.12] 25 at org.springframework.test.context.junit4.springjunit4classrunner.methodblock(springjunit4classrunner.java:291) [spring-test-5.1.4.release.jar:5.1.4.release] 26 at org.springframework.test.context.junit4.springjunit4classrunner.runchild(springjunit4classrunner.java:246) [spring-test-5.1.4.release.jar:5.1.4.release] 27 at org.springframework.test.context.junit4.springjunit4classrunner.runchild(springjunit4classrunner.java:97) [spring-test-5.1.4.release.jar:5.1.4.release] 28 at org.junit.runners.parentrunner$3.run(parentrunner.java:290) [junit-4.12.jar:4.12] 29 at org.junit.runners.parentrunner$1.schedule(parentrunner.java:71) [junit-4.12.jar:4.12] 30 at org.junit.runners.parentrunner.runchildren(parentrunner.java:288) [junit-4.12.jar:4.12] 31 at org.junit.runners.parentrunner.access$000(parentrunner.java:58) [junit-4.12.jar:4.12] 32 at org.junit.runners.parentrunner$2.evaluate(parentrunner.java:268) [junit-4.12.jar:4.12] 33 at org.springframework.test.context.junit4.statements.runbeforetestclasscallbacks.evaluate(runbeforetestclasscallbacks.java:61) [spring-test-5.1.4.release.jar:5.1.4.release] 34 at org.springframework.test.context.junit4.statements.runaftertestclasscallbacks.evaluate(runaftertestclasscallbacks.java:70) [spring-test-5.1.4.release.jar:5.1.4.release] 35 at org.junit.runners.parentrunner.run(parentrunner.java:363) [junit-4.12.jar:4.12] 36 at org.springframework.test.context.junit4.springjunit4classrunner.run(springjunit4classrunner.java:190) [spring-test-5.1.4.release.jar:5.1.4.release] 37 at org.eclipse.jdt.internal.junit4.runner.junit4testreference.run(junit4testreference.java:86) [.cp/:na] 38 at org.eclipse.jdt.internal.junit.runner.testexecution.run(testexecution.java:38) [.cp/:na] 39 at org.eclipse.jdt.internal.junit.runner.remotetestrunner.runtests(remotetestrunner.java:538) [.cp/:na] 40 at org.eclipse.jdt.internal.junit.runner.remotetestrunner.runtests(remotetestrunner.java:760) [.cp/:na] 41 at org.eclipse.jdt.internal.junit.runner.remotetestrunner.run(remotetestrunner.java:460) [.cp/:na] 42 at org.eclipse.jdt.internal.junit.runner.remotetestrunner.main(remotetestrunner.java:206) [.cp/:na] 43 caused by: java.lang.illegalstateexception: javax.websocket.server.servercontainer not available 44 at org.springframework.util.assert.state(assert.java:73) ~[spring-core-5.1.4.release.jar:5.1.4.release] 45 at org.springframework.web.socket.server.standard.serverendpointexporter.afterpropertiesset(serverendpointexporter.java:106) ~[spring-websocket-5.1.4.release.jar:5.1.4.release] 46 at org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.invokeinitmethods(abstractautowirecapablebeanfactory.java:1804) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 47 at org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.initializebean(abstractautowirecapablebeanfactory.java:1741) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 48 ... 40 common frames omitted 49 50 2019-02-13 14:13:38.640 error 14060 --- [ main] o.s.test.context.testcontextmanager : caught exception while allowing testexecutionlistener [org.springframework.test.context.web.servlettestexecutionlistener@1c93084c] to prepare test instance [org.lwt.websocketservertestapplicationtests@403132fc] 51 52 java.lang.illegalstateexception: failed to load applicationcontext 53 at org.springframework.test.context.cache.defaultcacheawarecontextloaderdelegate.loadcontext(defaultcacheawarecontextloaderdelegate.java:125) ~[spring-test-5.1.4.release.jar:5.1.4.release] 54 at org.springframework.test.context.support.defaulttestcontext.getapplicationcontext(defaulttestcontext.java:108) ~[spring-test-5.1.4.release.jar:5.1.4.release] 55 at org.springframework.test.context.web.servlettestexecutionlistener.setuprequestcontextifnecessary(servlettestexecutionlistener.java:190) ~[spring-test-5.1.4.release.jar:5.1.4.release] 56 at org.springframework.test.context.web.servlettestexecutionlistener.preparetestinstance(servlettestexecutionlistener.java:132) ~[spring-test-5.1.4.release.jar:5.1.4.release] 57 at org.springframework.test.context.testcontextmanager.preparetestinstance(testcontextmanager.java:246) ~[spring-test-5.1.4.release.jar:5.1.4.release] 58 at org.springframework.test.context.junit4.springjunit4classrunner.createtest(springjunit4classrunner.java:227) [spring-test-5.1.4.release.jar:5.1.4.release] 59 at org.springframework.test.context.junit4.springjunit4classrunner$1.runreflectivecall(springjunit4classrunner.java:289) [spring-test-5.1.4.release.jar:5.1.4.release] 60 at org.junit.internal.runners.model.reflectivecallable.run(reflectivecallable.java:12) [junit-4.12.jar:4.12] 61 at org.springframework.test.context.junit4.springjunit4classrunner.methodblock(springjunit4classrunner.java:291) [spring-test-5.1.4.release.jar:5.1.4.release] 62 at org.springframework.test.context.junit4.springjunit4classrunner.runchild(springjunit4classrunner.java:246) [spring-test-5.1.4.release.jar:5.1.4.release] 63 at org.springframework.test.context.junit4.springjunit4classrunner.runchild(springjunit4classrunner.java:97) [spring-test-5.1.4.release.jar:5.1.4.release] 64 at org.junit.runners.parentrunner$3.run(parentrunner.java:290) [junit-4.12.jar:4.12] 65 at org.junit.runners.parentrunner$1.schedule(parentrunner.java:71) [junit-4.12.jar:4.12] 66 at org.junit.runners.parentrunner.runchildren(parentrunner.java:288) [junit-4.12.jar:4.12] 67 at org.junit.runners.parentrunner.access$000(parentrunner.java:58) [junit-4.12.jar:4.12] 68 at org.junit.runners.parentrunner$2.evaluate(parentrunner.java:268) [junit-4.12.jar:4.12] 69 at org.springframework.test.context.junit4.statements.runbeforetestclasscallbacks.evaluate(runbeforetestclasscallbacks.java:61) [spring-test-5.1.4.release.jar:5.1.4.release] 70 at org.springframework.test.context.junit4.statements.runaftertestclasscallbacks.evaluate(runaftertestclasscallbacks.java:70) [spring-test-5.1.4.release.jar:5.1.4.release] 71 at org.junit.runners.parentrunner.run(parentrunner.java:363) [junit-4.12.jar:4.12] 72 at org.springframework.test.context.junit4.springjunit4classrunner.run(springjunit4classrunner.java:190) [spring-test-5.1.4.release.jar:5.1.4.release] 73 at org.eclipse.jdt.internal.junit4.runner.junit4testreference.run(junit4testreference.java:86) [.cp/:na] 74 at org.eclipse.jdt.internal.junit.runner.testexecution.run(testexecution.java:38) [.cp/:na] 75 at org.eclipse.jdt.internal.junit.runner.remotetestrunner.runtests(remotetestrunner.java:538) [.cp/:na] 76 at org.eclipse.jdt.internal.junit.runner.remotetestrunner.runtests(remotetestrunner.java:760) [.cp/:na] 77 at org.eclipse.jdt.internal.junit.runner.remotetestrunner.run(remotetestrunner.java:460) [.cp/:na] 78 at org.eclipse.jdt.internal.junit.runner.remotetestrunner.main(remotetestrunner.java:206) [.cp/:na] 79 caused by: org.springframework.beans.factory.beancreationexception: error creating bean with name 'serverendpointexporter' defined in org.lwt.websocketservertestapplication: invocation of init method failed; nested exception is java.lang.illegalstateexception: javax.websocket.server.servercontainer not available 80 at org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.initializebean(abstractautowirecapablebeanfactory.java:1745) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 81 at org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.docreatebean(abstractautowirecapablebeanfactory.java:576) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 82 at org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.createbean(abstractautowirecapablebeanfactory.java:498) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 83 at org.springframework.beans.factory.support.abstractbeanfactory.lambda$dogetbean$0(abstractbeanfactory.java:320) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 84 at org.springframework.beans.factory.support.defaultsingletonbeanregistry.getsingleton(defaultsingletonbeanregistry.java:222) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 85 at org.springframework.beans.factory.support.abstractbeanfactory.dogetbean(abstractbeanfactory.java:318) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 86 at org.springframework.beans.factory.support.abstractbeanfactory.getbean(abstractbeanfactory.java:199) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 87 at org.springframework.beans.factory.support.defaultlistablebeanfactory.preinstantiatesingletons(defaultlistablebeanfactory.java:846) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 88 at org.springframework.context.support.abstractapplicationcontext.finishbeanfactoryinitialization(abstractapplicationcontext.java:863) ~[spring-context-5.1.4.release.jar:5.1.4.release] 89 at org.springframework.context.support.abstractapplicationcontext.refresh(abstractapplicationcontext.java:546) ~[spring-context-5.1.4.release.jar:5.1.4.release] 90 at org.springframework.boot.springapplication.refresh(springapplication.java:775) ~[spring-boot-2.1.2.release.jar:2.1.2.release] 91 at org.springframework.boot.springapplication.refreshcontext(springapplication.java:397) ~[spring-boot-2.1.2.release.jar:2.1.2.release] 92 at org.springframework.boot.springapplication.run(springapplication.java:316) ~[spring-boot-2.1.2.release.jar:2.1.2.release] 93 at org.springframework.boot.test.context.springbootcontextloader.loadcontext(springbootcontextloader.java:127) ~[spring-boot-test-2.1.2.release.jar:2.1.2.release] 94 at org.springframework.test.context.cache.defaultcacheawarecontextloaderdelegate.loadcontextinternal(defaultcacheawarecontextloaderdelegate.java:99) ~[spring-test-5.1.4.release.jar:5.1.4.release] 95 at org.springframework.test.context.cache.defaultcacheawarecontextloaderdelegate.loadcontext(defaultcacheawarecontextloaderdelegate.java:117) ~[spring-test-5.1.4.release.jar:5.1.4.release] 96 ... 25 common frames omitted 97 caused by: java.lang.illegalstateexception: javax.websocket.server.servercontainer not available 98 at org.springframework.util.assert.state(assert.java:73) ~[spring-core-5.1.4.release.jar:5.1.4.release] 99 at org.springframework.web.socket.server.standard.serverendpointexporter.afterpropertiesset(serverendpointexporter.java:106) ~[spring-websocket-5.1.4.release.jar:5.1.4.release] 100 at org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.invokeinitmethods(abstractautowirecapablebeanfactory.java:1804) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 101 at org.springframework.beans.factory.support.abstractautowirecapablebeanfactory.initializebean(abstractautowirecapablebeanfactory.java:1741) ~[spring-beans-5.1.4.release.jar:5.1.4.release] 102 ... 40 common frames omitted
解决办法：为springboottest注解指定参数classes和webenvironment
@springboottest(webenvironment = springboottest.webenvironment.defined_port)
因为websocket是servlet容器所支持的，所以需要加载servlet容器：
webenvironment参数为springboot指定applicationcontext类型。
webenvironment = springboottest.webenvironment.defined_port表示内嵌的服务器将会在一个随机的端口启动。
webenvironment主要有一下类型：
1 enum webenvironment {
2
3 /**
4 * creates a {@link webapplicationcontext} with a mock servlet environment if
5 * servlet apis are on the classpath, a {@link reactivewebapplicationcontext} if
6 * spring webflux is on the classpath or a regular {@link applicationcontext}
7 * otherwise.
8 */
9 mock(false),
10
11 /**
12 * creates a web application context (reactive or servlet based) and sets a
13 * {@code server.port=0} {@link environment} property (which usually triggers
14 * listening on a random port). often used in conjunction with a
15 * {@link localserverport} injected field on the test.
16 */
17 random_port(true),
18
19 /**
20 * creates a (reactive) web application context without defining any
21 * {@code server.port=0} {@link environment} property.
22 */
23 defined_port(true),
24
25 /**
26 * creates an {@link applicationcontext} and sets
27 * {@link springapplication#setwebapplicationtype(webapplicationtype)} to
28 * {@link webapplicationtype#none}.
29 */
30 none(false);
31
32 private final boolean embedded;
33
34 webenvironment(boolean embedded) {
35 this.embedded = embedded;
36 }
37
38 /**
39 * return if the environment uses an {@link servletwebserverapplicationcontext}.
40 * @return if an {@link servletwebserverapplicationcontext} is used.
41 */
42 public boolean isembedded() {
43 return this.embedded;
44 }
45
46 }
对于springboot如何创建applicationcontext,可以参考博客：https://blog.csdn.net/lilongjiu/article/details/78045062。
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