使用 SAP Cloud SDK 3.2.0 版向 OData 服务发送 POST 请求时如何避免 DestinationAccessException

Question

我正在开发一个使用 SAP Cloud SDK 版本 3.2.0 的 Java 应用程序。我有一个使用 ResilienceDecorator 的 queueCallable 异步处理请求的端点；通过此服务，创建业务合作伙伴 (BP)。我正在使用 SoapUI 进行压力测试，有时在发送多个请求时，例如 50 个请求，会生成 DestinationAccessException。我不知道这个问题的原因是什么，有人可以帮我找到解决方案吗？

有时会显示以下消息：

DestinationAccessException: com.sap.cloud.sdk.cloudplatform.connectivity.exception.DestinationAccessException: javax.naming.NoInitialContextException: Cannot instantiate class: org.apache.naming.java.javaURLContextFactory [Root exception is java.lang.ClassNotFoundException: org.apache.naming.java.javaURLContextFactory]

其他时候显示以下消息：

DestinationAccessException: No destination for name 'ErpQueryEndpoint' could be found in any of the registered loaders.

这是我的 class AccountController：

public class AccountController {

    @Autowired
    AccountBF accountBF;

    ...

    @RequestMapping(value = "/bp/create/extended", method = RequestMethod.POST)
    @ResponseBody
    public ResponseEntity<?> createBpExtended(@RequestBody BpCreateBasicRequest bpCreateRequest) throws IOException {

        Object bpCreateBasicResponse = accountBF.bpCreateExtended(bpCreateRequest);
        return ResponseEntity.ok(bpCreateBasicResponse);
    }
}

这是我的 class AccountBFimpl：

public class AccountBFimpl implements AccountBF {

    private ResilienceConfiguration conf;

    ...

    public Object executeAsyncCall(BpCreateBasicRequest bpCreateRequest) {

        LogMessage logMessage = new LogMessage();

        ...

        JSONObject jsonResponse = null;

        try {

            ODataCreateRequestImpl createRequest = new ODataCreateRequestImpl("/sap/opu/odata/sap/ZAS_BP_CREATION_SRV",
            "BP_DATASet", bodyAsMap, null, null, null, headersAsMap, null, false, null, null, false);

            createRequest.execute("ErpQueryEndpoint");
            jsonResponse = new JSONObject();

        } catch (DestinationAccessException e ) {
            System.out.println("DestinationAccessException: "+e.getMessage());
            logMessage.setMessageContent("Creating the BP: " + bpCreateRequest.getNumeroId() + ". " +
            " DestinationAccessException: "+e.getMessage());
            writeMessageContent(logMessage);
        } catch (HttpServerErrorException e ) {
            System.out.println("HttpServerErrorException: " + e.getMessage());
            logMessage.setMessageContent("Creating the BP: " + bpCreateRequest.getNumeroId() + ". " +
            " HttpServerErrorException: "+e.getMessage());
            writeMessageContent(logMessage);
        } catch (Exception e ) {
            System.out.println("Exception: " + e.getMessage());
            logMessage.setMessageContent("Creating the BP: " + bpCreateRequest.getNumeroId() + ". " +
            " Exception: "+e.getMessage());
            writeMessageContent(logMessage);
        }

        ...

        return jsonResponse;
    }

    public Object bpCreateExtended(BpCreateBasicRequest bpCreateRequest) throws IOException {

        LogMessage logMessage = new LogMessage();
        logMessage.setMessageContent("Creating the BP: " + bpCreateRequest.getNumeroId() + ". " + "Entering the" +
        " bpCreateExtended method");
        writeMessageContent(logMessage);

        this.conf = ResilienceConfiguration.of(AccountBFimpl.class);
        Object response = null;

        CompletableFuture<Object> futureFirstStep = ResilienceDecorator.queueCallable(() ->
                executeAsyncCall(bpCreateRequest), conf);

        try {
            TimeUnit.SECONDS.sleep(5);
        } catch (InterruptedException e) {
            logMessage.setMessageContent("Creating the BP: " + bpCreateRequest.getNumeroId() + ". " +
            " InterruptedException in sleep - bpCreateExtended: "+e.getMessage());
            writeMessageContent(logMessage);
        }

        logMessage.setMessageContent("After create the BP: " + bpCreateRequest.getNumeroId() + ". " + "Leaving the" +
        " bpCreateExtended method");
        writeMessageContent(logMessage);

        return (JSONObject) response;
    }
}

这是我pom.xml的内容：

<?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>com.atlantida.services</groupId>
    <artifactId>account</artifactId>
    <packaging>war</packaging>
    <version>1.0-SNAPSHOT</version>
    <name>atlantida</name>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.sap.cloud.sdk</groupId>
                <artifactId>sdk-bom</artifactId>
                <version>3.2.0</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <properties>
        <java-version>1.8</java-version>
        <springframework.version>5.1.8.RELEASE</springframework.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <junit.version>4.11</junit.version>
        <jackson-version>2.9.2</jackson-version>
        <lombok.version>1.18.8</lombok.version>

        <jcl.slf4j.version>1.7.12</jcl.slf4j.version>
        <logback.version>1.1.3</logback.version>

        <!-- if you are behind a proxy use the following two properties to configure your proxy. Default: None -->
        <proxy.host />
        <proxy.port />
        <non.proxy.hosts />

        <!-- Properties that are related to the SAP Cloud Platform. -->
        <scp.sdkVersion>1.44.12</scp.sdkVersion>

        <!-- this is the location of your local SAP CP Neo runtime -->
        <scp.sdkInstallPath>${project.basedir}/scp/sdk-${scp.sdkVersion}</scp.sdkInstallPath>
        <scp.sdkLocalServerContentPath>${project.basedir}/localServerContent</scp.sdkLocalServerContentPath>
        <scp.sdkErpEndpoint>${scp.sdkInstallPath}/server/config_master/service.destinations/destinations/ErpQueryEndpoint</scp.sdkErpEndpoint>

        <scp.sdkSymbolicLink>${project.basedir}/scp/sdk</scp.sdkSymbolicLink>
        <scp.sdkNeoCmdExtension>.sh</scp.sdkNeoCmdExtension>
        <scp.sdkNeoCmd>${scp.sdkInstallPath}/tools/neo${scp.sdkNeoCmdExtension}</scp.sdkNeoCmd>
        <scp.sdkLocalServer>${scp.sdkInstallPath}/server</scp.sdkLocalServer>

        <scp.skipInstallSdk>false</scp.skipInstallSdk>
        <scp.skipDeploy>false</scp.skipDeploy>
        <scp.skipPutDestination>false</scp.skipPutDestination>
        <scp.skipRestart>false</scp.skipRestart>
        <scp.skipRollingUpdate>true</scp.skipRollingUpdate>

        <scp.vmArguments />
        <scp.vmSize>lite</scp.vmSize>
        <scp.vmMinProcesses>1</scp.vmMinProcesses>
        <scp.vmMaxProcesses>1</scp.vmMaxProcesses>

        <scp.app />
        <scp.host />
        <scp.account />
        <scp.username />
        <scp.password />

        <!-- Required for SAP CP user session management and audit logging. -->
        <scp.warImportPackage>com.sap.security.auth.service,com.sap.security.um.service.api,com.sap.core.service.auditlog.impl,com.sap.cloud.auditlog,com.sap.cloud.auditlog.exception,com.sap.cloud.auditlog.extension</scp.warImportPackage>

        <!-- Defines whether the deployment is productive or not. -->
        <productive />
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${springframework.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${springframework.version}</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.0</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>${jackson-version}</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>${jackson-version}</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.datatype</groupId>
            <artifactId>jackson-datatype-jsr310</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>${lombok.version}</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>com.googlecode.json-simple</groupId>
            <artifactId>json-simple</artifactId>
            <version>1.1.1</version>
        </dependency>

        <!-- Bridge logging from JCL to SLF4j -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>jcl-over-slf4j</artifactId>
            <version>${jcl.slf4j.version}</version>
        </dependency>

        <!-- logback -->
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>${logback.version}</version>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.json/json -->
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20190722</version>
        </dependency>

        <dependency>
            <groupId>com.sap.cloud.sdk.cloudplatform</groupId>
            <artifactId>scp-neo</artifactId>
        </dependency>

        <dependency>
            <groupId>com.sap.cloud.servicesdk</groupId>
            <artifactId>odatav2-connectivity-sdk3</artifactId>
            <version>1.36.2</version>
        </dependency>

        <dependency>
            <groupId>com.sap.cloud.sdk.cloudplatform</groupId>
            <artifactId>security-servlet</artifactId>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>javax.inject</groupId>
            <artifactId>javax.inject</artifactId>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>com.sap.cloud</groupId>
            <artifactId>neo-javaee7-wp-api</artifactId>
            <scope>provided</scope>
        </dependency>
    </dependencies>

    <build>
        <finalName>atlantida</finalName>

        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-enforcer-plugin</artifactId>
                    <version>3.0.0-M2</version>
                    <executions>
                        <execution>
                            <id>SAP Cloud SDK Project Structure Checks</id>
                            <goals>
                                <goal>enforce</goal>
                            </goals>
                            <configuration>
                                <rules>
                                    <requireMavenVersion>
                                        <version>3.5</version>
                                    </requireMavenVersion>
                                    <requireJavaVersion>
                                        <version>${java.version}</version>
                                    </requireJavaVersion>
                                    <reactorModuleConvergence />
                                </rules>
                                <fail>true</fail>
                            </configuration>
                        </execution>
                    </executions>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-war-plugin</artifactId>
                    <version>3.2.2</version>
                    <configuration>
                        <attachClasses>true</attachClasses>
                        <archive>
                            <manifestEntries>
                                <Version>${project.version}</Version>
                                <Import-Package>${scp.warImportPackage}</Import-Package>
                            </manifestEntries>
                        </archive>
                        <webResources>
                            <resources>
                                <filtering>true</filtering>
                                <directory>src/main/webapp</directory>
                                <includes>
                                    <include>**/web.xml</include>
                                </includes>
                            </resources>
                        </webResources>
                    </configuration>
                </plugin>

                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-dependency-plugin</artifactId>
                    <version>3.1.1</version>
                    <configuration>
                        <artifactItems>
                            <artifactItem>
                                <groupId>com.sap.cloud</groupId>
                                <artifactId>neo-javaee7-wp-sdk</artifactId>
                                <version>${scp.sdkVersion}</version>
                                <type>zip</type>
                                <overWrite>false</overWrite>
                                <outputDirectory>${scp.sdkInstallPath}</outputDirectory>
                            </artifactItem>
                        </artifactItems>
                    </configuration>
                </plugin>

                <!-- Plugin for deployment to SAP Cloud Platform Neo. -->
                <plugin>
                    <groupId>com.sap.cloud</groupId>
                    <artifactId>neo-javaee7-wp-maven-plugin</artifactId>
                    <version>${scp.sdkVersion}</version>
                    <executions>
                        <execution>
                            <id>stop</id>
                            <phase>install</phase>
                            <goals>
                                <goal>stop</goal>
                            </goals>
                            <configuration>
                                <skip>${scp.skipRestart}</skip>
                            </configuration>
                        </execution>
                        <execution>
                            <id>deploy</id>
                            <phase>install</phase>
                            <goals>
                                <goal>deploy</goal>
                            </goals>
                            <configuration>
                                <skip>${scp.skipDeploy}</skip>
                                <vmArguments>${scp.vmArguments}</vmArguments>
                            </configuration>
                        </execution>
                        <execution>
                            <id>start</id>
                            <phase>install</phase>
                            <goals>
                                <goal>start</goal>
                            </goals>
                            <configuration>
                                <skip>${scp.skipRestart}</skip>
                            </configuration>
                        </execution>
                        <execution>
                            <id>rolling-update</id>
                            <phase>install</phase>
                            <goals>
                                <goal>rolling-update</goal>
                            </goals>
                            <configuration>
                                <skip>${scp.skipRollingUpdate}</skip>
                            </configuration>
                        </execution>
                    </executions>
                    <configuration>
                        <sdkInstallPath>${scp.sdkInstallPath}</sdkInstallPath>
                        <skip>${scp.skipInstallSdk}</skip>

                        <application>${scp.app}</application>
                        <source>${project.build.directory}/${project.build.finalName}.war</source>

                        <vmArguments>${scp.vmArguments}</vmArguments>
                        <size>${scp.vmSize}</size>
                        <minimumProcesses>${scp.vmMinProcesses}</minimumProcesses>
                        <maximumProcesses>${scp.vmMaxProcesses}</maximumProcesses>

                        <host>${scp.host}</host>
                        <account>${scp.account}</account>
                        <user>${scp.username}</user>
                        <password>${scp.password}</password>
                        <synchronous>true</synchronous>

                        <httpProxyHost>${proxy.host}</httpProxyHost>
                        <httpProxyPort>${proxy.port}</httpProxyPort>
                        <httpsProxyHost>${proxy.host}</httpsProxyHost>
                        <httpsProxyPort>${proxy.port}</httpsProxyPort>

                        <consoleCommand />
                        <consoleHttpProxyHost>${proxy.host}</consoleHttpProxyHost>
                        <consoleHttpProxyPort>${proxy.port}</consoleHttpProxyPort>
                        <consoleHttpsProxyHost>${proxy.host}</consoleHttpsProxyHost>
                        <consoleHttpsProxyPort>${proxy.port}</consoleHttpsProxyPort>

                        <dbsystem />
                        <dbSize />
                        <dbUser />
                    </configuration>
                </plugin>

                <!-- Plugin for deployment to local runtime of SAP Cloud Platform Neo. -->
                <plugin>
                    <groupId>com.sap.cloud.sdk.plugins</groupId>
                    <artifactId>scp-neo-maven-plugin</artifactId>
                    <version>3.2.0</version>
                    <configuration>
                        <sdkPlugin>neo-javaee7-wp-maven-plugin</sdkPlugin>
                        <sdkPluginVersion>${scp.sdkVersion}</sdkPluginVersion>
                        <sdkInstallPath>${scp.sdkInstallPath}</sdkInstallPath>
                        <sdkSymbolicLink>${scp.sdkSymbolicLink}</sdkSymbolicLink>
                        <sdkServerContentPath>${scp.sdkLocalServerContentPath}</sdkServerContentPath>
                        <source>${project.build.directory}/${project.build.finalName}.war</source>
                        <proxyHost>${proxy.host}</proxyHost>
                        <proxyPort>${proxy.port}</proxyPort>
                        <httpNonProxyHosts>${non.proxy.hosts}</httpNonProxyHosts>
                        <destinations>
                            <destination>
                                <path>${scp.sdkErpEndpoint}</path>
                                <username>achacon</username>
                                <password>*******</password>
                                <url>http://crmdev:4431</url>
                            </destination>
                        </destinations>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>

        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>com.sap.cloud.sdk.plugins</groupId>
                <artifactId>usage-analytics-maven-plugin</artifactId>
                <version>3.2.0</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>usage-analytics</goal>
                        </goals>
                        <configuration>
                            <skipUsageAnalytics>false</skipUsageAnalytics>
                            <generateSalt>true</generateSalt>
                                <!--
                                Note: A random salt is auto-generated once the project is built for the first time.
                                Please keep the generated salt in the POM file, for example, when pushing to git.

                                To learn more, visit: https://blogs.sap.com/2018/10/23/usage-analytics-s4sdk/
                                -->
                            <salt>5d5e4e1e8a5f05d547fe8880f65173bda150a670f91f3657b970eaa9e7a4d392</salt>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <profiles>
        <!--
        Profiles that are used to set the Neo SDK "neo" command extension ("neo.sh" or "neo.cmd")
        -->
        <profile>
            <id>windows</id>
            <activation>
                <os>
                    <family>windows</family>
                </os>
            </activation>
            <properties>
                <scp.sdkNeoCmdExtension>.bat</scp.sdkNeoCmdExtension>
            </properties>
        </profile>
        <profile>
            <id>unix</id>
            <activation>
                <os>
                    <family>unix</family>
                </os>
            </activation>
            <properties>
                <scp.sdkNeoCmdExtension>.sh</scp.sdkNeoCmdExtension>
            </properties>
        </profile>

        <!-- Profile setting properties for deploying to the local SAP CP runtime. -->
        <profile>
            <id>local-deploy</id>
            <activation>
                <property>
                    <name>!scp.app</name>
                </property>
            </activation>
            <properties>
                <scp.skipInstallSdk>true</scp.skipInstallSdk>
                <scp.skipDeploy>true</scp.skipDeploy>
                <scp.skipPutDestination>true</scp.skipPutDestination>
                <scp.skipRestart>true</scp.skipRestart>
                <scp.skipRollingUpdate>true</scp.skipRollingUpdate>
            </properties>
        </profile>

        <!-- Profile setting properties for deploying a productive version to SAP CP. -->
        <profile>
            <id>scp-deploy</id>
            <activation>
                <property>
                    <name>productive</name>
                </property>
            </activation>
            <properties>
                <scp.skipInstallSdk>false</scp.skipInstallSdk>
                <scp.skipDeploy>true</scp.skipDeploy>
                <scp.skipPutDestination>false</scp.skipPutDestination>
                <scp.skipRestart>true</scp.skipRestart>
                <scp.skipRollingUpdate>false</scp.skipRollingUpdate>
            </properties>
        </profile>
    </profiles>
</project>

这是我的 ErpQueryEndpoint 文件：https://i.imgur.com/jIWsa4o.jpg

Answer 1

谢谢你的好问题。我注意到的第一件事是您使用的是已经过时的 SDK 版本，当前版本是 3.14.0，您现在使用的是 3.2.0。我们在每个版本中都做了很多修复，我会推荐切换到您的依赖项中的最新版本。看看我们的 release notes

关于 Resilience，很难准确说明负载测试失败的原因，因为您通过调用 SDK 团队未维护的非类型化请求构建器在相当低的级别上使用 SDK。对于 Odata V2 ODataCreateRequestImpl 是一个依赖项，并不意味着直接使用。我们仅为了边缘情况和方便而公开它。

使用 SDK 的一种更可靠的方法是先从您的服务定义生成虚拟数据模型，然后构建类型化请求。那些应该更多可靠地实现并且更易于调试。

您是否可以选择先生成虚拟数据模型并使用构建请求的首选方式？ This tutorial covers the topic of the way SDK is intended to be used for the most use cases
Here is the tutorial covering basic Resilience setup

我会看看是否能找到更多关于此案例的想法，同时更新 SDK 版本并检查您是否可以使用上面教程中提到的类型化请求构建器来进行 CRUD 是个好主意。

如果您有任何其他细节可以更清楚地了解此案例，请随时分享。

Answer 2

非常感谢您的回复，Kovalyov。我按照您的建议将 SAP Cloud SDK 更新到了 3.14.0 版，这部分解决了我的问题。

升级到SAP Cloud SDK 3.14.0版本后，尝试启动本地SCP部署，但是报错。该错误的解决方案是消除我的 pom.xml:

的以下依赖性

<dependency>
       <groupId>com.fasterxml.jackson.datatype</groupId>
       <artifactId>jackson-datatype-jsr310</artifactId>
</dependency>

此外，有必要在我的代码中替换以下指令：

CompletableFuture<Object> futureFirstStep = ResilienceDecorator.queueCallable(() ->
            executeAsyncCall(bpCreateRequest), conf);

使用此指令：

new Thread(() -> {
        some instruction;
    }).start();

使用 SAP Cloud SDK 3.2.0 版向 OData 服务发送 POST 请求时如何避免 DestinationAccessException

How to avoid a DestinationAccessException when sending a POST request to an OData service using SAP Cloud SDK version 3.2.0

java

odata

sap-cloud-platform

sap-cloud-sdk