我今天试了一下Camunda企业版,发现这个问题。
java.lang.IllegalStateException: Cannot create a session after the response has been committed
at org.apache.catalina.connector.Request.doGetSession(Request.java:2993)
at org.apache.catalina.connector.Request.getSession(Request.java:2432)
at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:908)
at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:920)
at org.camunda.bpm.webapp.impl.security.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:68)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.parkway.camunda.config.filter.CorsFilter.doFilterInternal(CorsFilter.java:25)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
...
不知道这是不是一个错误?只发生在
Spring-Boot: (v2.2.1.RELEASE)
Camunda BPM: (v7.12.0-ee)
Camunda BPM Spring Boot Starter: (v3.4.0)
我已经用同样的一套代码试过了,但在以下情况下工作正常
Spring-Boot: (v2.2.1.RELEASE)
Camunda BPM: (v7.10.0)
Camunda BPM Spring Boot Starter: (v3.2.0)
谁能帮我检查一下? 谢谢。
在网上搜索了一天,终于找到了问题所在。
究其根本原因。 因为我在Camunda网站外调用REST API,没有开启认证机制,也没有使用apiabcdo-something。
参考资料:http://docs.camunda.orgmanual7.6referencerestoverviewauthentication。https:/docs.camunda.orgmanual7.6referencerestoverviewauthentication。
REST API附带了HTTP Basic Authentication的实现。默认情况下,它是关闭的。
任何不针对特定引擎的请求(例如,它不是引擎{name}...这样的形式)都会对默认引擎进行认证。
解决方法。
from /api/abc/do-something -> /engine/api/abc/do-something
@Configuration
public class CamundaSecurityFilter {
@Bean
public FilterRegistrationBean processEngineAuthenticationFilter() {
FilterRegistrationBean registration = new FilterRegistrationBean();
registration.setName("camunda-auth");
registration.setFilter(getProcessEngineAuthenticationFilter());
registration.addInitParameter("authentication-provider",
"org.camunda.bpm.engine.rest.security.auth.impl.HttpBasicAuthenticationProvider");
registration.addUrlPatterns("/*");
return registration;
}
@Bean
public Filter getProcessEngineAuthenticationFilter() {
return new ProcessEngineAuthenticationFilter();
}
}
感谢这个家伙。https:/forum.camunda.orgtturn-onbasic-http-authentication-for-rest-api-in-spring-boot3431。