使用Java捕获文件时遇UnsatisfiedResolutionException问题求助

错误信息 #

javax.enterprise.inject.UnsatisfiedResolutionException: Api type [javax.servlet.http.HttpServletRequest] is not found with the qualifiers
Qualifiers: [@javax.enterprise.inject.Default()]
for injection into Method Injection Point, method name : getWebContext, Bean Owner : [WebContext, WebBeansType:PRODUCERMETHOD, Name:null, API Types:[java.lang.Object,org.pac4j.core.context.WebContext], Qualifiers:[javax.enterprise.inject.Default,javax.enterprise.inject.Any], Producer Method: org.pac4j.core.context.WebContext org.pac4j.jee.util.Pac4jProducer.getWebContext(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)]

问题根源：该错误由javaee-pac4j 7.1.0版本依赖引发，且因OIDC功能需求无法移除该依赖。

解决方案 #

• 手动提供HttpServletRequest和HttpServletResponse的CDI生产者
  创建CDI生产者类，为HttpServletRequest和HttpServletResponse提供带默认限定符的实例，示例代码：

  import javax.enterprise.context.RequestScoped;
  import javax.enterprise.inject.Produces;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import javax.servlet.annotation.WebFilter;
  import javax.servlet.FilterChain;
  import javax.servlet.ServletException;
  import javax.servlet.ServletRequest;
  import javax.servlet.ServletResponse;
  import java.io.IOException;
  
  @RequestScoped
  public class ServletRequestProducer {
  
      private static ThreadLocal<HttpServletRequest> requestHolder = new ThreadLocal<>();
      private static ThreadLocal<HttpServletResponse> responseHolder = new ThreadLocal<>();
  
      @Produces
      @RequestScoped
      public HttpServletRequest getHttpServletRequest() {
          return requestHolder.get();
      }
  
      @Produces
      @RequestScoped
      public HttpServletResponse getHttpServletResponse() {
          return responseHolder.get();
      }
  
      @WebFilter(urlPatterns = "/*")
      public static class RequestCaptureFilter implements javax.servlet.Filter {
          @Override
          public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
              try {
                  if (request instanceof HttpServletRequest && response instanceof HttpServletResponse) {
                      requestHolder.set((HttpServletRequest) request);
                      responseHolder.set((HttpServletResponse) response);
                  }
                  chain.doFilter(request, response);
              } finally {
                  requestHolder.remove();
                  responseHolder.remove();
              }
          }
      }
  }
  

  该类通过过滤器捕获请求和响应存入ThreadLocal，再通过生产者方法暴露给CDI容器，满足Pac4jProducer的注入需求。

• 检查容器兼容性
  确认当前Java EE容器（如WildFly、TomEE等）是否支持Servlet API的CDI注入，部分轻量容器需额外配置启用该支持。例如TomEE中需确保openejb.cdi.enable=true配置项已开启。

• 调整javaee-pac4j版本
  尝试切换到javaee-pac4j的其他版本（如7.0.0或7.2.0），新版本可能修复了CDI注入的兼容性缺陷，同时保留OIDC功能。

内容的提问来源于stack exchange，提问作者vivek204