Question

基本上我想在Tomcat 8中运行一些Rest类。我不确定如何将它们添加到我正在创建的tomcat嵌入式实例中。所以这就是我的工作。这就是Jersey课程：

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;

import static javax.ws.rs.core.MediaType.*;

@Path("register")
public class RegisterRestAPI {

    private MerchantRegistrationService merchantRegistrationService;

public RegisterRestAPI(MerchantRegistrationService merchantRegistrationService) {
    this.merchantRegistrationService = merchantRegistrationService;
}

    @GET
    @Produces(TEXT_PLAIN)
    public String register() {
        return "Hello!!!!";
    }
}

这是我创建Tomcat的类：

import org.apache.catalina.Context;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.startup.Tomcat;
import org.glassfish.jersey.server.ResourceConfig;
import org.glassfish.jersey.servlet.init.JerseyServletContainerInitializer;

import javax.servlet.ServletException;
import java.io.File;


public class TomcatServer {

private MerchantRegistrationService merchantRegistrationService;

public TomcatServer(MerchantRegistrationService merchantRegistrationService) 
{
    this.merchantRegistrationService = merchantRegistrationService;
}


public void start() throws ServletException, LifecycleException {
    String webappDirLocation = "restui/src/main/webapp/";
    Tomcat tomcat = new Tomcat();

    String webPort = System.getenv("PORT");
    if(webPort == null || webPort.isEmpty()) {
        webPort = "8080";
    }

    tomcat.setPort(Integer.valueOf(webPort));
    Context context = tomcat.addWebapp("/", new File(webappDirLocation).getAbsolutePath());

    tomcat.addServlet(context,"jersey-container-servlet",resourceConfig());
    context.addServletMapping("/register", "registration rest");

    tomcat.start();
    tomcat.getServer().await();
}

private ServletContainer resourceConfig() {
    return new ServletContainer(new ResourceConfig().register(new 
        RegisterRestAPI(merchantRegistrationService)));
    }
}

因此，正如您所看到的那样，带有问号的部分让我无法创建。另外，只有一个问题，这是我应该将这些类添加到服务器上运行的方式吗？

更新我添加了Michal Gajdos建议的那条线，但在启动时我得到了：

线程“main”中的异常java.lang.IllegalArgumentException：Servlet mapping指定一个未知的servlet名称注册休息 org.apache.catalina.core.StandardContext.addServletMapping（StandardContext.java:3160）在 org.apache.catalina.core.StandardContext.addServletMapping（StandardContext.java:3139）在com.crypto.restui.TomcatServer.start（TomcatServer.java:44）at com.crypto.assembler.Boot.main（Boot.java:22）at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57）在 sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:606）at com.intellij.rt.execution.application.AppMain.main（AppMain.java:120）

我该如何调用servlet？

Answer 1

ServletContainer扩展HttpServlet并可以传递给底层servlet容器，只需创建新实例：

new ServletContainer(new ResourceConfig(RegisterRestAPI.class));

您还可以在web.xml中定义servlet并将对此描述符的引用传递给Tomcat - 与Jetty here类似。

如何将Jersey REST Web服务添加到嵌入式tomcat中？

1 个答案: