[英]How to avoid a DestinationAccessException when sending a POST request to an OData service using SAP Cloud SDK version 3.2.0
我正在开发一个使用 SAP Cloud SDK 3.2.0 版的 Java 应用程序。 我有一个端点，它使用 ResilienceDecorator 的 queueCallable 异步处理请求； 通过此服务，可以创建业务合作伙伴 (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，有人能帮我找到解决办法吗？
有时会显示以下消息：
DestinationAccessException：com.sap.cloud.sdk.cloudplatform.connectivity.exception.DestinationAccessException：javax.naming.NoInitialContextException：无法实例化类：org.apache.naming.java.javaURLContextFactory [Root 异常是 java.lang.ClassNotFoundException：org.apache .naming.java.javaURLContextFactory]
其他时候会显示以下消息：
DestinationAccessException: 在任何注册的加载程序中都找不到名称“ErpQueryEndpoint”的目的地。
这是我的类 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);
}
}
这是我的类 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;
}
}
这是我的 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
谢谢你的好问题。 我注意到您使用的第一件事是已经过时的 SDK 版本，当前版本是3.14.0 ，您目前使用的是3.2.0 。 我们对每个版本都进行了大量修复，我建议您切换到依赖项中的最新版本。 查看我们的发行说明
关于 Resilience，很难确切说明为什么负载测试可能会失败，因为您通过调用非由 SDK 团队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ODataCreateRequestImpl V2 ODataCreateRequestImpl是一个依赖项，并不意味着直接使用。 我们公开它只是为了边缘情况和方便。
使用 SDK 的一种更可靠的方法是首先根据您的服务定义生成虚拟数据模型，然后构建类型化请求。 这些应该更可靠地实现并且更容易调试。
我会看看我是否能找到关于这种情况的更多想法，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处理 CRUD 将是一个好主意。
如果您有任何其他细节可以更清楚地了解这种情况，请随时分享。
非常感谢您的回复，科瓦廖夫。 我按照您的建议更新到 SAP Cloud SDK 3.14.0 版，这是我问题解决方案的一部分。
升级到 SAP Cloud SDK 3.14.0 版本后，我尝试启动本地 SCP 部署，但出现错误。 该错误的解决方案是消除我的 pom.xml 的以下依赖项：
<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);
有了这个指令：
new Thread(() -> {
some instruction;
}).start();
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