Jersey web.xml与基于注释的配置以及HK2绑定

Question

如何使用Jersey和HK2绑定将基于web.xml的配置迁移到基于注释的配置。

Answer 1

web.xml（需要迁移）

 <?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
    metadata-complete="false" version="3.1">
    <servlet>
        <servlet-name>accRestService</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>org.test.ciam.acctmgt</param-value>
        </init-param>
        <init-param>
            <param-name>javax.ws.rs.Application</param-name>
            <param-value>org.bitguiders.ciam.acct.MyAppConfig</param-value>
        </init-param>
        <load-on-startup>0</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>accountManagementRestService</servlet-name>
        <url-pattern>/acc/api/*</url-pattern>
    </servlet-mapping>
</web-app>

MyAppConfig（需要迁移/更新）

package org.bitguiders.acc.cfg;

import org.bitguiders.api.exceptions.GenericExceptionMapper;
import org.glassfish.jersey.jackson.JacksonFeature;
import org.glassfish.jersey.server.ResourceConfig;


public class MyAppConfig extends ResourceConfig {
    public ApplicationConfig() {
        register(JacksonFeature.class);
        register(GenericExceptionMapper.class);
        register(new DependencyBinder());
    }
}

ApplicationConfig.java用新的基于Java / Annotation的配置类替换web.xml和MyAppConfig.java。

package org.bitguiders.acc.cfg

import javax.ws.rs.ApplicationPath;

import org.bitguiders.acc.api.exceptions.GenericExceptionMapper;
import org.glassfish.jersey.jackson.JacksonFeature;
import org.glassfish.jersey.server.ResourceConfig;

@ApplicationPath("acc/api/*")
public class ApplicationConfig extends ResourceConfig {
    public ApplicationConfig() {
        packages("org.bitguiders.acc");
        register(JacksonFeature.class);
        register(GenericExceptionMapper.class);
        register(new DependencyBinder());
    }
}

HK2 Binding共享此类只是为了说明如何完成HK2绑定以及注册的目的是什么（新的DependencyBinder（））

package org.bitguiders.acc.cfg;

import javax.inject.Singleton;
import org.glassfish.hk2.api.TypeLiteral;
import org.glassfish.hk2.utilities.binding.AbstractBinder;
import org.glassfish.jersey.process.internal.RequestScoped;


public class DependencyBinder extends AbstractBinder{

private static final String UNSECURED = "unsecured";
private static final String SECURED = "secured";

@Override
protected void configure() {
    bind(AccountManagementServiceImpl.class).to(AccountManagementService.class).in(Singleton.class);
    bindFactory(AccessTokenStoreFactory.class).proxy(true).proxyForSameScope(false).to(AccessTokenStore.class).in(RequestScoped.class);
    bind(CASLocationServiceImpl.class).to(LocationService.class).named(CAS_LOCATION_SERVICE).in(Singleton.class);
    bindAsContract(LocationServiceFactory.class).in(Singleton.class);
    bindFactory(AccessTokenProviderFactory.class).to(AccessTokenProvider.class).to(new TypeLiteral<Provider<String>>(){}).in(Singleton.class);
    bind(CiamScim2ClientRequireTokenImpl.class).to(CiamScim2Client.class).named(SECURED).in(Singleton.class);
    bind(CiamScim2ClientImpl.class).to(CiamScim2Client.class).named(UNSECURED).in(Singleton.class);
    bind(AccountManagementOptionsServiceImpl.class).to(AccountManagementOptionsService.class).named(SECURED).in(Singleton.class);
    bindAsContract(OptionsApiServiceFactory.class).in(Singleton.class);
}

}