7
cxf.jaxrs.classes-scan and cxf.jaxrs.classes-scan-packagesを使用して、Springブートアプリケーションで既存のバニラJAX-RSアプリケーションJARをラッピングしています。 JARまたはmaven spring-boot:runで実行すると、依存関係注入が正常に動作します。 WAR（WebSphere Liberty 17.0.0.2上で）として実行すると、@Inject対応フィールドは、REST要求中にnullとなります。ここでSpringブートJAX-RS/CXF依存性注入はJARでは有効ですが、WARではありません
はSpringBootApplicationです：
@SpringBootApplication(scanBasePackages = { "com.test" })
public class CustomerServiceApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(CustomerServiceApplication.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(CustomerServiceApplication.class);
}
}
はここsrc/main/resources/application.propertiesです：
cxf.path=/
cxf.jaxrs.classes-scan=true
cxf.jaxrs.classes-scan-packages=com.test,com.fasterxml.jackson.jaxrs.json
はここ（バニラJAX-RSアプリケーションのJARをローカルリポジトリにあるたCustomerService-javaのです）Mavenのpom.xmlです：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>customerservice-springboot</groupId>
<artifactId>customerservice-springboot</artifactId>
<packaging>war</packaging>
<version>2.0.0-SNAPSHOT</version>
<name>Customer Service :: Spring Boot</name>
<!-- We need to use cxf-spring-boot-starter-jaxrs 3.2.0 because of https://issues.apache.org/jira/browse/CXF-7237
At the time of writing this code, the latest available version in Maven central
is 3.1.7 so we need to use the Apache snapshot repository. -->
<repositories>
<repository>
<id>apache.snapshots</id>
<name>Apache Development Snapshot Repository</name>
<url>https://repository.apache.org/content/repositories/snapshots/</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.cxf</groupId>
<artifactId>cxf-spring-boot-starter-jaxrs</artifactId>
<version>3.2.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.json</groupId>
<artifactId>javax.json-api</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
<dependency>
<groupId>customerservice-java</groupId>
<artifactId>customerservice-java</artifactId>
<version>2.0.0-SNAPSHOT</version>
<classifier>jar</classifier>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.jaxrs</groupId>
<artifactId>jackson-jaxrs-json-provider</artifactId>
</dependency>
<dependency>
<groupId>org.glassfish</groupId>
<artifactId>javax.json</artifactId>
<version>1.0.4</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
JARプロジェクトにおけるWebサービス：
package com.test;
import javax.inject.Inject;
import javax.ws.rs.CookieParam;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;
@Path("/")
public class CustomerServiceRest {
@Inject
CustomerService customerService;
@GET
@Path("/byid/{custid}")
@Produces("text/plain")
public Response getCustomer(@PathParam("custid") String customerid, @CookieParam("token") String jwtToken) {
return Response.ok(customerService.getCustomerId(customerid)).build();
}
}
はここにBeanの：
package com.test;
import javax.inject.Named;
@Named
public class CustomerService {
public String getCustomerById(String username) {
// ... implementation ..
return customerDoc.toJson();
}
}
はここでWARのログ出力です：
. ____ _ __ _ _
/\\/___'_ __ _ _(_)_ __ __ _ \ \ \ \
(()\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ))))
' |____| .__|_| |_|_| |_\__, |////
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.4.RELEASE)
INFO c.a.s.CustomerServiceApplication - Starting CustomerServiceApplication on 23fb5f5646c3 with PID 20 (/opt/ibm/wlp/usr/servers/defaultServer/apps/expanded/customerservice-springboot-2.0.0-SNAPSHOT.war/WEB-INF/classes started by root in /opt/ibm/wlp/output/defaultServer)
INFO c.a.s.CustomerServiceApplication - No active profile set, falling back to default profiles: default
INFO o.s.b.c.e.AnnotationConfigEmbeddedWebApplicationContext - Refreshing org.springframework.boot[email protected]67e7ebcd: startup date [Wed Jul 19 19:36:12 UTC 2017]; root of context hierarchy
INFO o.s.b.f.x.XmlBeanDefinitionReader - Loading XML bean definitions from class path resource [META-INF/cxf/cxf.xml]
INFO o.s.b.f.a.AutowiredAnnotationBeanPostProcessor - JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
INFO c.i.w.w.webapp - SRVE0292I: Servlet Message - [customerservice-springboot-2.0.0-SNAPSHOT]:.Initializing Spring embedded WebApplicationContext
INFO o.s.w.c.ContextLoader - Root WebApplicationContext: initialization completed in 3654 ms
INFO o.s.b.w.s.ServletRegistrationBean - Mapping servlet: 'dispatcherServlet' to [/]
INFO o.s.b.w.s.ServletRegistrationBean - Mapping servlet: 'CXFServlet' to [/*]
INFO o.s.b.w.s.FilterRegistrationBean - Mapping filter: 'errorPageFilter' to: [/*]
INFO o.s.b.w.s.FilterRegistrationBean - Mapping filter: 'characterEncodingFilter' to: [/*]
INFO o.s.b.w.s.FilterRegistrationBean - Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
INFO o.s.b.w.s.FilterRegistrationBean - Mapping filter: 'httpPutFormContentFilter' to: [/*]
INFO o.s.b.w.s.FilterRegistrationBean - Mapping filter: 'requestContextFilter' to: [/*]
INFO o.s.w.s.m.m.a.RequestMappingHandlerAdapter - Looking for @ControllerAdvice: org.springframework.boot[email protected]67e7ebcd: startup date [Wed Jul 19 19:36:12 UTC 2017]; root of context hierarchy
INFO o.s.w.s.m.m.a.RequestMappingHandlerMapping - Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
INFO o.s.w.s.m.m.a.RequestMappingHandlerMapping - Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
INFO o.s.w.s.h.SimpleUrlHandlerMapping - Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
INFO o.s.w.s.h.SimpleUrlHandlerMapping - Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
INFO o.s.w.s.h.SimpleUrlHandlerMapping - Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
INFO o.a.c.e.ServerImpl - Setting the server's publish address to be/
INFO o.s.j.e.a.AnnotationMBeanExporter - Registering beans for JMX exposure on startup
INFO c.a.s.CustomerServiceApplication - Started CustomerServiceApplication in 14.955 seconds (JVM running for 271.749)
INFO o.a.c.e.S.e.o.i.l.E.i.w.j.2.0.c.0.17.cl170220170523-1818(id=171)] - Setting the server's publish address to be/
私はapplication.propertiesでlogging.level.org.springframework.beans.factory.support=TRACEを有効にした場合、私は依存性注入を見ますアプリケーション起動時の作業：
DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating shared instance of singleton bean 'customerService'
DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'customerService'
DEBUG o.s.b.f.s.DefaultListableBeanFactory - Eagerly caching bean 'customerService' to allow for resolving potential circular references
DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'customerService' [...]
DEBUG o.s.b.f.s.DefaultListableBeanFactory - Creating instance of bean 'com.test.CustomerServiceRest'
DEBUG o.s.b.f.s.DefaultListableBeanFactory - Returning cached instance of singleton bean 'customerService'
DEBUG o.s.b.f.s.DefaultListableBeanFactory - Finished creating instance of bean 'com.test.CustomerServiceRest'
しかし、私はREST要求を行うとき、私はCustomerServiceRestの新しいインスタンスが各要求（コンストラクタでSystem.out.println）上で作成され、@Inject -able依存関係がnull（NullPointerExceptionにresuting）されていることがわかります。だから、私は@SingletonをCustomerServiceRestに追加すると考えていたかもしれませんが、依然としてリクエストごとに新しいオブジェクトが作成されています。
誰かが単一のWebサービスBeanを使用する方法、またはSpringがすべての依存関係を確実に注入する方法を知っている人はいますか？バニラのJAX-RSアプリケーションJARは、それ自身がSpringの依存関係を引き継ぐことはできません。
Libertyでは、アプリケーションパッケージ化されたCXF JARをWEB-INF/libから削除していくつかの競合を引き起こした場合に動作します。 – kgibm