实现类/ bean

Question

我正在使用带有Spring 3.0.6-RELEASE的CXF RS 2.5.1。我想为“单个端点”提供多个实现类。我看到此问题已报告并已修复https://issues.apache.org/jira/browse/CXF-2439，但是，当我尝试执行此操作时，CXF只从jaxrs：serviceBeans标记中选择第一个资源类。对于其他请求，我在tomcat控制台上看到此消息为“找不到匹配请求路径/帐户/休息/传输的操作”。以下是配置。感谢任何意见。

的web.xml

    <listener>
        <listener-class> org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:account-servlet.xml</param-value>
    </context-param>

      <servlet>
    <servlet-name>CXF Servlet</servlet-name>
    <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
       </servlet>

      <servlet-mapping>
    <servlet-name>CXF Servlet</servlet-name>
    <url-pattern>/*</url-pattern>
      </servlet-mapping>

帐户-servlet.xml中

    <jaxrs:server id="accountService" address="/rest">
        <jaxrs:serviceBeans>
            <ref bean="transferService" />
                <ref bean="balanceService"/>
        </jaxrs:serviceBeans>
        <jaxrs:extensionMappings>
            <entry key="xml" value="application/xml" />
        </jaxrs:extensionMappings>
    </jaxrs:server>


    <bean id="transferService" class="com.mycompany.service.TransferService"/>
    <bean id="balanceService" class="com.mycompany.service.BalanceService"/>

BalanceService.java（省略导入）

        package com.mycompany.service;
        @Path("/")
         @Produces("application/xml")
        public class BalanceService{

    @GET
    @Path("/balance")
    public String getBalance() {
        StringBuilder response = new StringBuilder(128);
        response.append("<Balance>")
            .append("<amount>").append("250.00").append("</amount>")
            .append("</Balance>");
        return response.toString();
    }
       }

TransferService.java（省略导入）

package com.mycompany.service;

@Path("/")
@Produces("application/xml")
public class TransferService {

    @GET
    @Path("/transfer")
    public String getTransfer() {

        StringBuilder response = new StringBuilder(128);
        response.append("<Transfer>")
            .append("<amount>").append("350.00").append("</amount>")
            .append("</Transfer>");
        return response.toString();
    }
  }

请忽略任何编程违规/标准，因为它只是POC的示例应用程序。

Answer 1

我通过将部分@Path映射移动到服务bean类来解决了这个问题。在你的情况下：

BalanceService

@Path("/balance")
@Produces("application/xml")
public class BalanceService {
    @GET
    @Path("/{id}")
    public String getBalance(@PathParam("id") long id) {
        ...
    }
}

TransferService

@Path("/transfer")
@Produces("application/xml")
public class TransferService {

    @GET
    @Path("/{id}")
    public String getTransfer(@PathParam("id") long id) {
       ...      
    }
}

Answer 2

所以我花了一些时间搜索互联网，但没有找到解决这个问题的方法。文档中有一个可用于推断解决方案的注释。

http://cxf.apache.org/docs/jax-rs-basics.html#JAX-RSBasics-Customselectionbetweenmultipleresources

因此我写了一个自定义资源比较器，做了相应的jaxrs：服务器配置和Eureka！有效！。现在，我有2个实现类映射到javax：rs地址中的单个资源/地址。

请注意，下面显示的自定义资源比较器中的逻辑可能会因URL模式而异。

提供所有文件的来源。希望这将有助于将来的某人：）

的web.xml

<web-app>
  <display-name>Archetype Created Web Application</display-name>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/account-servlet.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet>
        <servlet-name>CXF Servlet</servlet-name>
        <servlet-class>org.apache.cxf.transport.servlet.CXFServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>CXF Servlet</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>

</web-app>

account-servlet.xml（applicationContext）

<beans>
    <jaxrs:server id="accountService" address="/rest">
        <jaxrs:serviceBeans>
            <ref bean="accountServiceImpl" />
            <ref bean="transferServiceImpl" />
        </jaxrs:serviceBeans>
        <jaxrs:resourceComparator>
            <bean id="accountServiceComparator" class="com.etrade.comparator.AccountServiceComparator"/>
        </jaxrs:resourceComparator>
        <jaxrs:extensionMappings>
            <entry key="xml" value="application/xml" />
        </jaxrs:extensionMappings>
    </jaxrs:server>

    <bean id="accountServiceImpl" class="com.etrade.service.AccountService" />
    <bean id="transferServiceImpl" class="com.etrade.service.TransferService" />
</beans>

的pom.xml

  <modelVersion>4.0.0</modelVersion>
  <groupId>cxf.rest</groupId>
  <artifactId>account</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>account Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>

        <dependency>
            <groupId>org.apache.cxf</groupId>
            <artifactId>cxf-bundle-jaxrs</artifactId>
            <version>2.5.0</version>
        </dependency> 

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>3.0.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>3.0.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>3.0.5.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>3.0.5.RELEASE</version>
        </dependency>

  </dependencies>
  <build>

    <plugins>
      <plugin>
        <!-- This plugin is needed for the servlet example -->
        <groupId>org.mortbay.jetty</groupId>
        <artifactId>jetty-maven-plugin</artifactId>
        <version>7.2.0.v20101020</version>
      </plugin>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>exec-maven-plugin</artifactId>
        <version>1.1</version>
        <executions>
          <execution><goals><goal>java</goal></goals></execution>
        </executions>
      </plugin>
    </plugins>

    <finalName>account</finalName>
  </build>
</project>

自定义资源比较器

package com.etrade.comparator;

import java.lang.reflect.Method;

import javax.ws.rs.Path;

import org.apache.cxf.jaxrs.ext.ResourceComparator;
import org.apache.cxf.jaxrs.impl.UriInfoImpl;
import org.apache.cxf.jaxrs.model.ClassResourceInfo;
import org.apache.cxf.jaxrs.model.OperationResourceInfo;
import org.apache.cxf.message.Message;

public class AccountServiceComparator implements ResourceComparator{

    public int compare(ClassResourceInfo arg0, ClassResourceInfo arg1,
            Message message) {

        UriInfoImpl uriInfo = new UriInfoImpl(message);

        String path = uriInfo.getPath();
        String[] pathArray = path.split("/");
        String resourceUrlName = pathArray[1];

        System.out.println("Path : "+resourceUrlName);

        Method[] methods = arg0.getServiceClass().getMethods();
        int value = 1;
        String resource = null;
        for(Method method : methods) {

            Path annotationPath = method.getAnnotation(javax.ws.rs.Path.class);
            if(null != annotationPath){
                String pathValue = annotationPath.value();
                String[] parts = pathValue.split("/");
                resource = parts[1];
                System.out.println("resource : "+resource);
            }

            if(resourceUrlName.contains(resource)){
                value = -1; 
            }

        }
        return value;
    }

    public int compare(OperationResourceInfo arg0, OperationResourceInfo arg1,
            Message arg2) {
        return 0;
    }

}

实现类/ bean

AccountService.java

package com.etrade.service;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;

@Path("/account")
@Produces("application/xml")
public class AccountService {

    @GET
    @Produces("application/xml")
    @Path("/balance/{id}")
    public String accountBalance(@PathParam("id") long id) {
        System.out.println("id : "+id);
        StringBuilder response = new StringBuilder(256);
        response.append("<Response>").append("<id>").append(id)
        .append("</id>").append("<balance>").append("250.00").append("</balance>")
        .append("</Response>");

        return response.toString();
    }

}

TransferService.java

package com.etrade.service;

import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;

@Path("/account")
@Produces("application/xml")
public class TransferService {

    @GET
    @Produces("application/xml")
    @Path("/transfer/{id}")
    public String accountTransfer(@PathParam("id") long id) {
        System.out.println("transfer id : "+id);
        StringBuilder response = new StringBuilder(256);
        response.append("<Response>").append("<id>").append(id)
        .append("</id>").append("<transfer>").append("250.00").append("</transfer>")
        .append("</Response>");

        return response.toString();
    }


}

网址：

http://localhost:8080/rest/account/balance/12
http://localhost:8080/rest/transfer/balance/13

Answer 3

您可以简化逻辑来比较根资源，例如，知道请求URI和根资源类的名称就足以做出决定，检查各个方法看起来很复杂。顺便说一句，只有当根资源和/或个别资源方法成为平等候选人时才需要自定义资源比较器

Answer 4

我以这种方式解决问题：

删除＆＃34; 自定义资源比较器＆＃34; （没有必要）

删除此内容：

<dependency>
    <groupId>org.apache.cxf</groupId>
    <artifactId>cxf-bundle-jaxrs</artifactId>
    <version>2.5.0</version>
</dependency>

在 account-servlet.xml / applicationContext 中：

<beans>
    <jaxrs:server id="accountService" address="/rest">
        <jaxrs:serviceBeans>
            <ref bean="accountServiceImpl" />
            <ref bean="transferServiceImpl" />
        </jaxrs:serviceBeans>
    </jaxrs:server>
</beans>

在 beans / class implementation ：

中

...
@Context("accountServiceImpl")
@Path("/account")
public class Accountservice{
...

这就是全部。：）

使用Spring在CXF中进行多个resouceBean配置

4 个答案:

的web.xml

account-servlet.xml（applicationContext）

的pom.xml

自定义资源比较器

实现类/ bean

AccountService.java

TransferService.java

网址：