列出所有已部署的休息端点（spring-boot，jersey） [英] Listing all deployed rest endpoints (spring-boot, jersey)
问题描述
是否可以使用spring boot列出我配置的所有休息端点？执行器在启动时列出所有现有路径，我想要类似于我的自定义服务，所以我可以检查启动是否正确配置了所有路径并将此信息用于客户端呼叫。
Is it possible to list all my configured rest-endpoints with spring boot? The actuator lists all existing paths on startup, I want something similar for my custom services, so I can check on startup if all paths are configured correctly and use this info for client calls.
我该怎么做？我在服务bean上使用 @Path / @GET 注释，并通过 ResourceConfig＃注册它们registerClasses 。
How do I do this? I use @Path/@GET annotations on my service beans and register them via ResourceConfig#registerClasses.
有没有办法查询所有路径的配置？
Is there a way to query the Config for all Paths?
更新：我通过
@Bean
public ResourceConfig resourceConfig() {
return new ResourceConfig() {
{
register(MyRestController.class);
}
};
}
Update2：我想要像
GET /rest/mycontroller/info
POST /res/mycontroller/update
...
动机：当spring-boot应用程序启动时，我想打印出所有已注册的控制器及其路径，所以我可以停止猜测要使用哪些端点。
Motivation: when the spring-boot app started, I want to print out all registered controllers and their paths, so I can stop guessing which endpoints to use.
推荐答案
执行此操作的最佳方法可能是使用 ApplicationEventListener 。从那里你可以监听application finished initializing事件，并从 ApplicationEvent 中获取 ResourceModel 。 ResourceModel 将包含所有已初始化的资源。然后你可以像其他人提到的那样遍历资源。以下是一个实现。一些实现来自 DropwizardResourceConfig 实施。
Probably the best way to do this, is to use an ApplicationEventListener. From there you can listen for the "application finished initializing" event, and get the ResourceModel from the ApplicationEvent. The ResourceModel will have all the initialized Resources. Then you can traverse the Resource as others have mentioned. Below is an implementation. Some of the implementation has been taken from the DropwizardResourceConfig implementation.
import com.fasterxml.classmate.ResolvedType;
import com.fasterxml.classmate.TypeResolver;
import java.util.Comparator;
import java.util.HashSet;
import java.util.Set;
import java.util.TreeSet;
import org.glassfish.jersey.server.model.Resource;
import org.glassfish.jersey.server.model.ResourceMethod;
import org.glassfish.jersey.server.model.ResourceModel;
import org.glassfish.jersey.server.monitoring.ApplicationEvent;
import org.glassfish.jersey.server.monitoring.ApplicationEventListener;
import org.glassfish.jersey.server.monitoring.RequestEvent;
import org.glassfish.jersey.server.monitoring.RequestEventListener;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class EndpointLoggingListener implements ApplicationEventListener {
private static final TypeResolver TYPE_RESOLVER = new TypeResolver();
private final String applicationPath;
private boolean withOptions = false;
private boolean withWadl = false;
public EndpointLoggingListener(String applicationPath) {
this.applicationPath = applicationPath;
}
@Override
public void onEvent(ApplicationEvent event) {
if (event.getType() == ApplicationEvent.Type.INITIALIZATION_APP_FINISHED) {
final ResourceModel resourceModel = event.getResourceModel();
final ResourceLogDetails logDetails = new ResourceLogDetails();
resourceModel.getResources().stream().forEach((resource) -> {
logDetails.addEndpointLogLines(getLinesFromResource(resource));
});
logDetails.log();
}
}
@Override
public RequestEventListener onRequest(RequestEvent requestEvent) {
return null;
}
public EndpointLoggingListener withOptions() {
this.withOptions = true;
return this;
}
public EndpointLoggingListener withWadl() {
this.withWadl = true;
return this;
}
private Set<EndpointLogLine> getLinesFromResource(Resource resource) {
Set<EndpointLogLine> logLines = new HashSet<>();
populate(this.applicationPath, false, resource, logLines);
return logLines;
}
private void populate(String basePath, Class<?> klass, boolean isLocator,
Set<EndpointLogLine> endpointLogLines) {
populate(basePath, isLocator, Resource.from(klass), endpointLogLines);
}
private void populate(String basePath, boolean isLocator, Resource resource,
Set<EndpointLogLine> endpointLogLines) {
if (!isLocator) {
basePath = normalizePath(basePath, resource.getPath());
}
for (ResourceMethod method : resource.getResourceMethods()) {
if (!withOptions && method.getHttpMethod().equalsIgnoreCase("OPTIONS")) {
continue;
}
if (!withWadl && basePath.contains(".wadl")) {
continue;
}
endpointLogLines.add(new EndpointLogLine(method.getHttpMethod(), basePath, null));
}
for (Resource childResource : resource.getChildResources()) {
for (ResourceMethod method : childResource.getAllMethods()) {
if (method.getType() == ResourceMethod.JaxrsType.RESOURCE_METHOD) {
final String path = normalizePath(basePath, childResource.getPath());
if (!withOptions && method.getHttpMethod().equalsIgnoreCase("OPTIONS")) {
continue;
}
if (!withWadl && path.contains(".wadl")) {
continue;
}
endpointLogLines.add(new EndpointLogLine(method.getHttpMethod(), path, null));
} else if (method.getType() == ResourceMethod.JaxrsType.SUB_RESOURCE_LOCATOR) {
final String path = normalizePath(basePath, childResource.getPath());
final ResolvedType responseType = TYPE_RESOLVER
.resolve(method.getInvocable().getResponseType());
final Class<?> erasedType = !responseType.getTypeBindings().isEmpty()
? responseType.getTypeBindings().getBoundType(0).getErasedType()
: responseType.getErasedType();
populate(path, erasedType, true, endpointLogLines);
}
}
}
}
private static String normalizePath(String basePath, String path) {
if (path == null) {
return basePath;
}
if (basePath.endsWith("/")) {
return path.startsWith("/") ? basePath + path.substring(1) : basePath + path;
}
return path.startsWith("/") ? basePath + path : basePath + "/" + path;
}
private static class ResourceLogDetails {
private static final Logger logger = LoggerFactory.getLogger(ResourceLogDetails.class);
private static final Comparator<EndpointLogLine> COMPARATOR
= Comparator.comparing((EndpointLogLine e) -> e.path)
.thenComparing((EndpointLogLine e) -> e.httpMethod);
private final Set<EndpointLogLine> logLines = new TreeSet<>(COMPARATOR);
private void log() {
StringBuilder sb = new StringBuilder("\nAll endpoints for Jersey application\n");
logLines.stream().forEach((line) -> {
sb.append(line).append("\n");
});
logger.info(sb.toString());
}
private void addEndpointLogLines(Set<EndpointLogLine> logLines) {
this.logLines.addAll(logLines);
}
}
private static class EndpointLogLine {
private static final String DEFAULT_FORMAT = " %-7s %s";
final String httpMethod;
final String path;
final String format;
private EndpointLogLine(String httpMethod, String path, String format) {
this.httpMethod = httpMethod;
this.path = path;
this.format = format == null ? DEFAULT_FORMAT : format;
}
@Override
public String toString() {
return String.format(format, httpMethod, path);
}
}
}
然后你只需要注册泽西岛的听众。您可以从 JerseyProperties 获取应用程序路径。您需要在属性 spring.jersey.applicationPath 下的Spring Boot application.properties 中进行设置。这将是根路径，就像您在 ResourceConfig 子类
Then you just need to register the listener with Jersey. You can get the application path from the JerseyProperties. You will need to have set it in the Spring Boot application.properties under the property spring.jersey.applicationPath. This will be the root path, just as if you were to use @ApplicationPath on your ResourceConfig subclass
@Bean
public ResourceConfig getResourceConfig(JerseyProperties jerseyProperties) {
return new JerseyConfig(jerseyProperties);
}
...
public class JerseyConfig extends ResourceConfig {
public JerseyConfig(JerseyProperties jerseyProperties) {
register(HelloResource.class);
register(new EndpointLoggingListener(jerseyProperties.getApplicationPath()));
}
}
有一点需要注意的是，加载默认情况下，Jersey servlet上未设置-startup。这意味着泽西岛在第一次请求之前不会在启动时加载。因此，在第一个请求之前，您不会看到侦听器被触发。我已经打开问题以获得配置属性，但与此同时，你有一个几个选项：
One thing to note, is that the load-on-startup is not set by default on the Jersey servlet. What this means is that that Jersey won't load on startup until the first request. So you will not see the listener triggered until the first request. I have opened an issue to possible get a configuration property, but in the meantime, you have a couple options:
-
将Jersey设置为过滤器，而不是servlet。过滤器将在启动时加载。使用泽西作为过滤器，对于大多数帖子，实际上没有任何不同的行为。要配置它，您只需要在
application.properties中添加一个Spring Boot属性
spring.jersey.type=filter
另一个选项是覆盖Jersey ServletRegistrationBean 并设置其 loadOnStartup 属性。这是一个示例配置。一些实现直接来自 JerseyAutoConfiguration
The other option is to override the Jersey ServletRegistrationBean and set its loadOnStartup property. Here is an example configuration. Some of the implementation has been taken straight from the JerseyAutoConfiguration
@SpringBootApplication
public class JerseyApplication {
public static void main(String[] args) {
SpringApplication.run(JerseyApplication.class, args);
}
@Bean
public ResourceConfig getResourceConfig(JerseyProperties jerseyProperties) {
return new JerseyConfig(jerseyProperties);
}
@Bean
public ServletRegistrationBean jerseyServletRegistration(
JerseyProperties jerseyProperties, ResourceConfig config) {
ServletRegistrationBean registration = new ServletRegistrationBean(
new ServletContainer(config),
parseApplicationPath(jerseyProperties.getApplicationPath())
);
addInitParameters(registration, jerseyProperties);
registration.setName(JerseyConfig.class.getName());
registration.setLoadOnStartup(1);
return registration;
}
private static String parseApplicationPath(String applicationPath) {
if (!applicationPath.startsWith("/")) {
applicationPath = "/" + applicationPath;
}
return applicationPath.equals("/") ? "/*" : applicationPath + "/*";
}
private void addInitParameters(RegistrationBean registration, JerseyProperties jersey) {
for (Entry<String, String> entry : jersey.getInit().entrySet()) {
registration.addInitParameter(entry.getKey(), entry.getValue());
}
}
}
UPDATE
所以看起来Spring Boot将会是添加 load-on-startup 属性，所以我们不必覆盖Jersey ServletRegistrationBean 。将在Boot 1.4.0中添加
UPDATE
So it looks like Spring Boot is going to add the load-on-startup property, so we don't have to override the Jersey ServletRegistrationBean. Will be added in Boot 1.4.0
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