內省 Jersey 資源模型 Jersey 2.x

Question

我已經編寫了自己的掃描程序來瀏覽我的 JAX-RS 資源並使用jersey-server-1.18.1打印出方法名稱和路徑。 問題是當我將相同的代碼遷移到 2.16（將包名從com.sun.*更改為org.glassfish.* ）時，它就行不通了。

深入挖掘我發現那些必需的jersey-server類不再公開。 有誰知道原因？ 以及如何將下面的代碼從 1.x 遷移到 2.x ？ 實際上沒有關於此遷移的文檔。

所有幫助表示贊賞！ 下面是 1.x 的代碼

import com.wordnik.swagger.annotations.ApiOperation;
import com.sun.jersey.api.model.AbstractResource;
import com.sun.jersey.api.model.AbstractResourceMethod;
import com.sun.jersey.api.model.AbstractSubResourceLocator;
import com.sun.jersey.api.model.AbstractSubResourceMethod;
import com.sun.jersey.server.impl.modelapi.annotation.IntrospectionModeller;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author shivang
 */
public class Apiscanner {
    public static void main(String[] args) {
        Apiscanner runClass = new Apiscanner();
        runClass.xyz();
    }

    public void xyz() {
        AbstractResource resource = IntrospectionModeller.createResource(BaseResource.class);
        String uriPrefix = resource.getPath().getValue();
        abc(uriPrefix, resource);
    }

    public void abc(String uriPrefix, AbstractResource resource) {
        for (AbstractResourceMethod srm : resource.getResourceMethods()) {
            String uri = uriPrefix;
            System.out.println(srm.getHttpMethod() + "\t" + uri);
        }
        for (AbstractSubResourceMethod srm : resource.getSubResourceMethods()) {
            String uri = uriPrefix + srm.getPath().getValue();
            ApiOperation op = srm.getAnnotation(ApiOperation.class);
            System.out.println(srm.getHttpMethod() + "\t" + uri);
        }
        if (resource.getSubResourceLocators() != null && !resource.getSubResourceLocators().isEmpty()) {
            for (AbstractSubResourceLocator subResourceLocator : resource.getSubResourceLocators()) {
                ApiOperation op = subResourceLocator.getAnnotation(ApiOperation.class);
                AbstractResource childResource = IntrospectionModeller.createResource(op.response());
                String path = subResourceLocator.getPath().getValue();
                String pathPrefix = uriPrefix + path;
                abc(pathPrefix, childResource);
            }
        }
    }
}

Answer 1

Jersey 2.x 的新 API 主要可以在org.glassfish.jersey.server.model包中找到。

我能想到的一些等價物：

• AbstractResource Resource == Resource

• IntrospectionModeller.createResource == 我相信Resource.from(BaseResource.class)

• AbstractResourceMethod ResourceMethod == ResourceMethod

• resource.getSubResourceMethods() == getChildResources() ，它實際上只是返回一個List<Resource>

• AbstractSubResourceLocator == 似乎不存在。 我們只需檢查上面的子資源，看看它是否是一個定位器

  for (Resource childResource: resource.getChildResources()) { if (childResource.getResourceLocator() != null) { ResourceMethod method = childResource.getResourceLocator(); Class locatorType = method.getInvocable().getRawResponseType(); } }

  您還可以使用枚舉ResourceMethod.JaxrsType.SUB_RESOURCE_LOCATOR來檢查它是否等於ResourceMethod.getType()

   if (resourceMethod.getType() .equals(ResourceMethod.JaxrsType.SUB_RESOURCE_LOCATOR) { }

這是我能夠想出的，與你得到的相匹配。

import com.wordnik.swagger.annotations.ApiOperation;
import org.glassfish.jersey.server.model.Resource;
import org.glassfish.jersey.server.model.ResourceMethod;

public class ApiScanner {
    public static void main(String[] args) {
        ApiScanner scanner = new ApiScanner();
        scanner.xyz();
    }

    public void xyz() {
        Resource resource = Resource.from(BaseResource.class);
        abc(resource.getPath(), resource);
    }

    public void abc(String uriPrefix, Resource resource) {
        for (ResourceMethod resourceMethod: resource.getResourceMethods()) {
            String uri = uriPrefix;
            System.out.println("-- Resource Method --");
            System.out.println(resourceMethod.getHttpMethod() + "\t" + uri);
            ApiOperation api = resourceMethod.getInvocable().getDefinitionMethod()
                                                .getAnnotation(ApiOperation.class);
        }

        for (Resource childResource: resource.getChildResources()) {
            System.out.println("-- Child Resource --");
            System.out.println(childResource.getPath() + "\t" + childResource.getName());

            if (childResource.getResourceLocator() != null) {
                System.out.println("-- Sub-Resource Locator --");
                ResourceMethod method = childResource.getResourceLocator();
                Class locatorType = method.getInvocable().getRawResponseType();
                System.out.println(locatorType);
                Resource subResource = Resource.from(locatorType);
                abc(childResource.getPath(), subResource);        
            }
        }
    }
}

Answer 2

好的。 所以我幾乎在@peeskillet 提供答案的同時讓它開始工作。 如果人們想要重用代碼，我將添加不同風格的答案：

import java.util.ArrayList;
import java.util.List;
import org.glassfish.jersey.server.model.Resource;
import org.glassfish.jersey.server.model.ResourceMethod;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author shivang
 */
public class JerseyResourceScanner {
    public static void main(String[] args) {
        JerseyResourceScanner runClass = new JerseyResourceScanner();
        runClass.scan(BaseResource.class);
    }

    public void scan(Class baseClass) {
        Resource resource = Resource.builder(baseClass).build();
        String uriPrefix = "";
        process(uriPrefix, resource);
    }

    private void process(String uriPrefix, Resource resource) {
        String pathPrefix = uriPrefix;
        List<Resource> resources = new ArrayList<>();
        resources.addAll(resource.getChildResources());
        if (resource.getPath() != null) {
            pathPrefix = pathPrefix + resource.getPath();
        }
        for (ResourceMethod method : resource.getAllMethods()) {
            if (method.getType().equals(ResourceMethod.JaxrsType.SUB_RESOURCE_LOCATOR)) {
                resources.add(
                        Resource.from(resource.getResourceLocator()
                                .getInvocable().getDefinitionMethod().getReturnType()));
            }
            else {
                System.out.println(method.getHttpMethod() + "\t" + pathPrefix);
            }
        }
        for (Resource childResource : resources) {
            process(pathPrefix, childResource);
        }
    }
}