无法添加mysql连接器箱。罐到罐。xml

Question

我目前正在使用jax-rs开发一个restful api。这个项目是一个maven项目。我需要添加mysql连接器箱。jar添加到我的项目中。这是pom。xml生成的文件，我添加了jar文件，如下所示。

<modelVersion>4.0.0</modelVersion>

    <groupId>com.projects.api</groupId>
    <artifactId>messanger</artifactId>
    <packaging>war</packaging>
    <version>0.0.1-SNAPSHOT</version>
    <name>messanger</name>

    <build>
        <finalName>messanger</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>2.5.1</version>
                <inherited>true</inherited>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.glassfish.jersey</groupId>
                <artifactId>jersey-bom</artifactId>
                <version>${jersey.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>mysql-connector</groupId>
                <artifactId>mysql-connector-java-5.1.38-bin</artifactId>
                <version>5.1.38</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <dependencies>
        <dependency>
            <groupId>org.glassfish.jersey.containers</groupId>
            <artifactId>jersey-container-servlet-core</artifactId>
            <!-- use the following artifactId if you don't need servlet 2.x compatibility -->
            <!-- artifactId>jersey-container-servlet</artifactId -->
        </dependency>
        <!-- uncomment this to get JSON support
        <dependency>
            <groupId>org.glassfish.jersey.media</groupId>
            <artifactId>jersey-media-moxy</artifactId>
        </dependency>
        -->
    </dependencies>
    <properties>
        <jersey.version>2.22.2</jersey.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
</project>

当我运行他的项目时，它显示我添加的jar文件找不到类。你对此有什么想法吗？

Answer 1

<java.version> 11</java.version>
    <maven.compiler.target> ${java.version}</maven.compiler.target>
     <maven.compiler.Source> ${java.version}</maven.compiler.Source>

<dependencies>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.20</version>
        <exclusions>
            <exclusion>
                <groupId>com.google.protobuf</groupId>
                <artifactId>protobuf-java</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
</dependencies>
</properties>

您需要转到项目设置并更改java。版本为11或最新版本。Maven compile上出现错误“不再支持源选项5。使用6或更高版本”

Answer 2

代替

<dependency>
    <groupId>mysql-connector</groupId>
    <artifactId>mysql-connector-java-5.1.38-bin</artifactId>
    <version>5.1.38</version>
</dependency>

具有

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.38</version>
</dependency>

也总是搜索meaven依赖http://mvnrepository.com知道如何在未来添加任何东西