使用带有 Spring Boot 的可执行 jar 命令时的资源 FileNotFoundException答案

【问题标题】：Resource FileNotFoundException when using executable jar command with spring boot使用带有 Spring Boot 的可执行 jar 命令时的资源 FileNotFoundException
【发布时间】：2016-10-09 08:40:16
【问题描述】：

为了在我的 spring-boot 应用中启用 https，我执行了以下操作。

@Bean
@Inject
public EmbeddedServletContainerCustomizer containerCustomizer() throws FileNotFoundException
{
    final String absoluteKeystoreFile = ZenoTuringServiceApp.class.getClassLoader().getResource("test.jks").getFile();

    return (ConfigurableEmbeddedServletContainer factory) -> {
        TomcatEmbeddedServletContainerFactory containerFactory = (TomcatEmbeddedServletContainerFactory) factory;
        containerFactory.addConnectorCustomizers((TomcatConnectorCustomizer) (Connector connector) -> {
            connector.setSecure(true);
            connector.setScheme("https");
            connector.setAttribute("keystoreFile", absoluteKeystoreFile);
            connector.setAttribute("keystorePass", "test");
            connector.setAttribute("keystoreType", "JKS");
            connector.setAttribute("clientAuth", "false");
            connector.setAttribute("sslProtocol", "TLS");
            connector.setAttribute("SSLEnabled", true);
        });
    };
}

如果我使用 mvn spring-boot:run 运行它，它会按预期工作。

但是当我使用带有 java -jar target/xxx-xxx-service-0.1.17-SNAPSHOT.jar 的可执行 jar 运行时，我得到了 FileNotFoundException。

Caused by: org.apache.catalina.LifecycleException: service.getName(): "Tomcat";  Protocol handler start failed
        at org.apache.catalina.connector.Connector.startInternal(Connector.java:993)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
        ... 18 common frames omitted

Caused by: java.io.FileNotFoundException: /private/var/folders/wl/xxx77_523z44yjdgx2y7xxxc217h/T/tomcat.8061417798873093914.8091/file:/Users/xxx/Work/Himalay/xxx/xxx-xxx-service/target/xxx-xxx-service-0.1.17-SNAPSHOT.jar!/test.jks (No such file or directory)
        at java.io.FileInputStream.open0(Native Method)
        at java.io.FileInputStream.open(FileInputStream.java:195)
        at java.io.FileInputStream.<init>(FileInputStream.java:138)
        at org.apache.tomcat.util.net.jsse.JSSESocketFactory.getStore(JSSESocketFactory.java:433)
        at org.apache.tomcat.util.net.jsse.JSSESocketFactory.getKeystore(JSSESocketFactory.java:339)
        at org.apache.tomcat.util.net.jsse.JSSESocketFactory.getKeyManagers(JSSESocketFactory.java:597)

【问题讨论】：

您不能将资源（在 JAR 中）引用为 File。您必须使用 InputStream。所以keystoreFile 可能应该位于您的 JAR 之外，因为显然 Tomcat 需要一条到 File 的路径。
由于您是在 Tomcat 之外执行此操作，因此您没有包含“web”jar。您需要包含Java EE from Tomcat 库。
这可能会有所帮助kamwo.me/java-load-file-from-classpath-in-spring-boot
谢谢大家，发布解决方案

标签： java spring maven spring-boot resourcebundle

【解决方案1】：

上面的 cmets 和这段代码帮助了我..

// support loading the JKS from the classpath (to get around Tomcat limitation)
private static File getTuringKeyStoreFile() throws IOException {
    ClassPathResource resource = new ClassPathResource("test.jks");

    // Tomcat won't allow reading File from classpath so read as InputStream into temp File
    File jks = File.createTempFile("ssl_keystore", ".jks");
    InputStream inputStream = resource.getInputStream();
    try {
        FileUtils.copyInputStreamToFile(inputStream, jks);
    } finally {
        IOUtils.closeQuietly(inputStream);
    }

    return jks;
}

参考：https://github.com/robinhowlett/everything-ssl

【讨论】：