Mule-Requester 无法在 Maven 中编译

Question

我们有一个 Maven 项目，我们正在尝试使用 mule 请求程序从路径中读取文件。我们已经在 pom.xml 中添加了所需的依赖项，但是当我们尝试编译文件时，它失败并给出以下错误： java.lang.UnsupportedClassVersionError:

java.lang.UnsupportedClassVersionError: org/mule/module/generated/config/MulerequesterNamespaceHandler : Unsupported major.minor version 52.0

下面是我的pom.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>

http://maven.apache.org/maven-v4_0_0.xsd">

<modelVersion>4.0.0</modelVersion>
<groupId>nhs.sbs</groupId>
<artifactId>nhs-sample-file-java</artifactId>
<version>1.0.0-SNAPSHOT</version>
<packaging>mule</packaging>
<name>Mule nhs-sample-file-java Application</name>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

    <mule.version>3.8.1</mule.version>
    <mule.tools.version>1.2</mule.tools.version>
</properties>

<build>
    <plugins>
        <plugin>
            <groupId>org.mule.tools.maven</groupId>
            <artifactId>mule-app-maven-plugin</artifactId>
            <version>${mule.tools.version}</version>
            <extensions>true</extensions>
            <configuration>
                <copyToAppsDirectory>true</copyToAppsDirectory>
            <inclusions>
                    <inclusion>
                        <groupId>org.mule.modules</groupId>
                        <artifactId>mule-module-requester</artifactId>
                    </inclusion>
                </inclusions>
            </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-assembly-plugin</artifactId>
            <version>2.2.1</version>
            <configuration>
                <descriptorRefs>
                    <descriptorRef>project</descriptorRef>
                </descriptorRefs>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>build-helper-maven-plugin</artifactId>
            <version>1.7</version>
            <executions>
                <execution>
                    <id>add-resource</id>
                    <phase>generate-resources</phase>
                    <goals>
                        <goal>add-resource</goal>
                    </goals>
                    <configuration>
                        <resources>
                            <resource>
                                <directory>src/main/app/</directory>
                            </resource>
                            <resource>
                                <directory>mappings/</directory>
                            </resource>
                        </resources>
                    </configuration>
                </execution>
            </executions>
        </plugin>
    </plugins>
</build>

<!-- Mule Dependencies -->
<dependencies>
    <!-- Xml configuration -->
    <dependency>
        <groupId>com.mulesoft.muleesb</groupId>
        <artifactId>mule-core-ee</artifactId>
        <version>${mule.version}</version>
        <scope>provided</scope>
    </dependency>
    <!-- Xml configuration -->
    <dependency>
        <groupId>com.mulesoft.muleesb.modules</groupId>
        <artifactId>mule-module-spring-config-ee</artifactId>
        <version>${mule.version}</version>
        <scope>provided</scope>
    </dependency>
    <!-- Mule Transports -->
    <dependency>
        <groupId>org.mule.transports</groupId>
        <artifactId>mule-transport-file</artifactId>
        <version>${mule.version}</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.mule.transports</groupId>
        <artifactId>mule-transport-http</artifactId>
        <version>${mule.version}</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.mulesoft.muleesb.transports</groupId>
        <artifactId>mule-transport-jdbc-ee</artifactId>
        <version>${mule.version}</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.mulesoft.muleesb.transports</groupId>
        <artifactId>mule-transport-jms-ee</artifactId>
        <version>${mule.version}</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.mule.transports</groupId>
        <artifactId>mule-transport-vm</artifactId>
        <version>${mule.version}</version>
        <scope>provided</scope>
    </dependency>
    <!-- Mule Modules -->
    <dependency>
        <groupId>org.mule.modules</groupId>
        <artifactId>mule-module-scripting</artifactId>
        <version>${mule.version}</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.mule.modules</groupId>
        <artifactId>mule-module-xml</artifactId>
        <version>${mule.version}</version>
        <scope>provided</scope>
    </dependency>
    <!-- for testing -->
    <dependency>
        <groupId>org.mule.tests</groupId>
        <artifactId>mule-tests-functional</artifactId>
        <version>${mule.version}</version>
        <scope>test</scope>
    </dependency>
<dependency>
        <groupId>org.mule.modules</groupId>
        <artifactId>mule-module-http</artifactId>
        <version>${mule.version}</version>
        <scope>provided</scope>
    </dependency>
<dependency>
        <groupId>cglib</groupId>
        <artifactId>cglib</artifactId>
        <version>3.2.2</version>
        <scope>provided</scope>
    </dependency>
<dependency>
        <groupId>org.mule.modules</groupId>
        <artifactId>mule-module-requester</artifactId>
        <version>1.5</version>
    </dependency>
</dependencies>

<repositories>
      <repository>
        <id>Central</id>
        <name>Central</name>
        <url>http://repo1.maven.org/maven2/</url>
        <layout>default</layout>
    </repository>
    <repository>
        <id>mulesoft-releases</id>
        <name>MuleSoft Releases Repository</name>
        <url>http://repository.mulesoft.org/releases/</url>
        <layout>default</layout>
    </repository>
<repository>
        <id>muleforge-releases</id>
        <name>MuleForge Snapshot Repository</name>
        <url>https://repository-master.mulesoft.org/nexus/content/repositories/releases/</url>
    </repository>
</repositories>
<pluginRepositories>
    <pluginRepository>
        <id>mulesoft-release</id>
        <name>mulesoft release repository</name>
        <layout>default</layout>
        <url>http://repository.mulesoft.org/releases/</url>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </pluginRepository>
</pluginRepositories>

而我的申请xml如下图：

<flow name="nhs-sample-file-javaFlow">
    <http:listener config-ref="HTTP_Listener_Configuration" path="/filejava" doc:name="HTTP"/>
    <logger message="Start of the application" level="INFO" doc:name="Logger"/>
    <mulerequester:request resource="/mw_shared/mule/data/civica_icon/Inbound/Archive/SBSCIVICA16052017.txt" doc:name="Mule Requester"/>
    <logger message="#[payload]" level="INFO" doc:name="Logger"/>
</flow>

Answer 1

您使用的是 java 1.8 吗？我尝试使用 1.8，但没有发现任何问题。

Answer 2

问题是因为 Java 版本不匹配。

有关不受支持的 major.minor 版本的错误是因为在编译时您使用的是更高的 JDK 和运行时 JDK 的较低的 JDK

根据您的情况，您使用的是 JDK 1.7，正如您提到的 Mule 请求者 v1.4 具有 JDK 1.8

所以要解决这个问题，您可以将 JDK 更改为 1.8 或使用 mule requestor v1.3（有 JDK 1.7）

https://repository-master.mulesoft.org/nexus/content/repositories/releases/org/mule/modules/mule-module-requester/1.3

我认为它可以解决您的问题

Mule-Requester 无法在 Maven 中编译

Mule-Requester failing to compile in Maven

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