Question

我今天正在尝试Camunda Enterprise，并注意到了这个问题：

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)
    ...

不确定这个错误是不是？仅发生在

Spring-Boot:  (v2.2.1.RELEASE)
Camunda BPM: (v7.12.0-ee)
Camunda BPM Spring Boot Starter: (v3.4.0)

我尝试使用相同的代码集，并且可以正常工作

Spring-Boot:  (v2.2.1.RELEASE)
Camunda BPM: (v7.10.0)
Camunda BPM Spring Boot Starter: (v3.2.0)

有人可以帮我检查吗？
谢谢，

Answer 1

在互联网上搜索了一天之后，我终于找到了问题。

根本原因：，因为我在Camunda网站外部调用REST API，但未启用身份验证机制，也未使用/ api / abc / do-something

参考：https://docs.camunda.org/manual/7.6/reference/rest/overview/authentication/

REST API附带了HTTP基本身份验证的实现。默认情况下它是关闭的。

任何不针对特定引擎的请求（即，其格式不是/ engine / {name} / ...）都将针对默认引擎进行身份验证。

解决方案：

更改API路径：from /api/abc/do-something -> /engine/api/abc/do-something
通过添加此配置类来打开身份验证（如果您使用的是Spring Boot）

@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();
    }
}

感谢这些人：https://forum.camunda.org/t/turn-on-basic-http-authentication-for-rest-api-in-spring-boot/3431

Camunda：提交响应后无法创建会话

1 个答案: