Azure App Service中运行内嵌WireMock的SpringBoot应用解决方案咨询

问题核心原因 #

Azure App Service仅对外暴露80/443端口，这两个端口已被平台反向代理占用，用于将外部请求转发到你的SpringBoot应用内部端口（你配置的8085），所以直接让WireMock绑定80/443会触发“Address already in use”错误。以下是三种可行的解决思路：

方案1：通过SpringBoot请求转发代理WireMock请求 #

在SpringBoot中添加一个代理控制器，将特定路径的请求转发到内部运行的WireMock服务（8082端口），外部仅需通过SpringBoot的端口（映射到Azure的80/443）访问即可。

示例代码：

import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.servlet.http.HttpServletRequest;

@RestController
@RequestMapping("/wiremock")
public class WireMockProxyController {
    private final RestTemplate restTemplate = new RestTemplate();
    private static final String WIREMOCK_INTERNAL_URL = "http://localhost:8082";

    @RequestMapping(value = "/**", method = {HttpMethod.GET, HttpMethod.POST, HttpMethod.PUT, HttpMethod.DELETE})
    public ResponseEntity<?> proxyToWireMock(HttpServletRequest request, @RequestBody(required = false) String requestBody) {
        // 截取WireMock的目标路径
        String targetPath = request.getRequestURI().replaceFirst("/wiremock", "");
        String targetUrl = WIREMOCK_INTERNAL_URL + targetPath;

        // 复制原请求头
        HttpHeaders headers = new HttpHeaders();
        request.getHeaderNames().forEach(header -> headers.add(header, request.getHeader(header)));

        HttpEntity<String> requestEntity = new HttpEntity<>(requestBody, headers);
        return restTemplate.exchange(targetUrl, request.getMethod(), requestEntity, String.class);
    }
}

部署后，外部通过https://<你的应用服务名>.azurewebsites.net/wiremock/[WireMock接口路径]即可访问WireMock桩服务。

方案2：将WireMock集成到SpringBoot的Web容器中 #

让WireMock作为Servlet挂载到SpringBoot的Tomcat/Jetty容器，共用同一个端口，无需单独启动WireMock的服务器。

步骤1：添加依赖（Maven示例） #

<dependency>
    <groupId>com.github.tomakehurst</groupId>
    <artifactId>wiremock-jre8</artifactId>
    <version>2.35.0</version>
    <!-- 若生产环境需启用，将scope改为compile -->
    <scope>test</scope>
</dependency>

步骤2：注册WireMock Servlet #

import com.github.tomakehurst.wiremock.WireMockServer;
import com.github.tomakehurst.wiremock.core.WireMockConfiguration;
import org.springframework.boot.web.servlet.ServletRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class WireMockIntegrationConfig {

    @Bean
    public ServletRegistrationBean<WireMockServlet> wireMockServletRegistration() {
        // 配置WireMock不单独占用端口
        WireMockConfiguration config = WireMockConfiguration.options().port(-1);
        WireMockServer wireMockServer = new WireMockServer(config);
        wireMockServer.start();

        // 将WireMock Servlet挂载到/wiremock路径下
        return new ServletRegistrationBean<>(wireMockServer.getServlet(), "/wiremock/*");
    }
}

此方案下，WireMock和SpringBoot完全共用同一个端口，外部访问规则同方案1，且避免了端口冲突问题。

方案3：使用Azure App Service虚拟应用程序（适合独立WireMock服务） #

如果你的WireMock是独立服务而非内嵌，可在Azure App Service中配置虚拟应用程序，将WireMock部署到子路径（如/wiremock），平台会自动将该路径的请求转发到对应的应用。但由于你是内嵌在SpringBoot中，前两个方案更直接高效。

内容的提问来源于stack exchange，提问作者Shilpa