java打包jar

1 打包介绍

jar分为胖包和廋包，廋包不包含引用信息，胖包含引用的jar。这里主要介绍胖包的两种方法和遇到的问题

2 打包教程

2.1 Artifacts

  • ide中选择file

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  • 选择project struct

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  • 这里选择jar包的程序入口

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  • 这里选择要引用的jar包

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  • 这里选择build

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2.2 maven

<?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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.xx</groupId>
    <artifactId>merchant-access</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencies>


        <dependency>
            <groupId>com.abc</groupId>
            <artifactId>cryptokit.jni</artifactId>
            <version>1.0</version>
<!--            <scope>system</scope>-->
<!--            <systemPath>${project.basedir}/lib/cryptokit.jni-1.0.jar</systemPath>-->
        </dependency>

        <dependency>
            <groupId>com.abc</groupId>
            <artifactId>logback-cfca-jdk1.6</artifactId>
            <version>1.0</version>
<!--            <scope>system</scope>-->
<!--            <systemPath>${project.basedir}/lib/logback-cfca-jdk1.6-4.2.1.0.jar</systemPath>-->
        </dependency>

        <dependency>
            <groupId>com.abc</groupId>
            <artifactId>SADK</artifactId>
            <version>1.0</version>
<!--            <scope>system</scope>-->
<!--            <systemPath>${project.basedir}/lib/SADK-3.7.0.1.jar</systemPath>-->
        </dependency>

        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5</version>
        </dependency>
        <dependency>
            <groupId>commons-httpclient</groupId>
            <artifactId>commons-httpclient</artifactId>
            <version>3.1</version>
        </dependency>
        <dependency>
            <groupId>com.squareup.okhttp3</groupId>
            <artifactId>okhttp</artifactId>
            <version>4.1.0</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.47</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13</version>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>5.0.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.7.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.22</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>2.4.3</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <filters>
                                <filter>
                                    <artifact>*:*</artifact>
                                    <excludes>
                                        <exclude>META-INF/*.SF</exclude>
                                        <exclude>META-INF/*.DSA</exclude>
                                        <exclude>META-INF/*.RSA</exclude>
                                    </excludes>
                                </filter>
                            </filters>
                            <transformers>
                                <transformer
                                        implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>com.psbc.pfpj.App</mainClass>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

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2.3 问题

这里主要遇到一个报错:

Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for Manifest main attributes
        at sun.security.util.SignatureFileVerifier.processImpl(SignatureFileVerifier.java:317)
        at sun.security.util.SignatureFileVerifier.process(SignatureFileVerifier.java:259)
        at java.util.jar.JarVerifier.processEntry(JarVerifier.java:323)
        at java.util.jar.JarVerifier.update(JarVerifier.java:234)
        at java.util.jar.JarFile.initializeVerifier(JarFile.java:404)
        at java.util.jar.JarFile.ensureInitialization(JarFile.java:641)
        at java.util.jar.JavaUtilJarAccessImpl.ensureInitialization(JavaUtilJarAccessImpl.java:69)
        at sun.misc.URLClassPath$JarLoader$2.getManifest(URLClassPath.java:995)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:456)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
        at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:601)

网上搜 Error: A JNI error has occurred, please check your installation and try again 都说是java 和 javac的jdk版本不对，但是更换了jdk和电脑都会报这个错。最后搜 Exception in thread "main" java.lang.SecurityException: Invalid signature file digest for Manifest main attributes 网上说是因为jar内部相互调用的时候出错

解决办法：

  • 1 直接删除jar内部 META-INF 文件夹下面的 SF DSA RSA 文件
  • 2 在pom文件里面排除 SF DSA RSA 文件生成
    <filters>
        <filter>
            <artifact>*:*</artifact>
            <excludes>
                <exclude>META-INF/*.SF</exclude>
                <exclude>META-INF/*.DSA</exclude>
                <exclude>META-INF/*.RSA</exclude>
            </excludes>
        </filter>
    </filters>

2.3 总结

jar的打包方式有很多种，这里主要介绍了大胖包的两种

posted @ 2022-05-18 10:35  不要摇头晃脑  阅读(153)  评论(0)    收藏  举报