尝试添加ssl证书时如何解决“java.io.FileNotFoundException：class路径资源无法解析为URL”？

Question

我正在尝试将现有的 SSL 证书（.cer）添加到 Spring 引导应用程序中。 按照以下步骤，

第 1 步：在 JDK 8 的 keytool 中使用以下命令将现有的.cer 证书转换为 .p12 证书。

keytool -import -alias cert -file myCertificate.crt -keystore certificate.p12 -storepass password

第 2 步：将生成的此 certificate.p12 放置在应用程序的“resources”文件夹中。

第 3 步：在“application.properties”中添加以下配置

server.ssl.key-store = classpath:certificate.p12
server.ssl.key-store-password=password
server.ssl.key-store-type=pkcs12
server.ssl.key-alias=cert
server.ssl.key-password=password
server.ssl.enabled=true
server.port=8443  
security.require-ssl=true

第 4 步：在应用程序中添加以下“SecurityConfig.java”文件。

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.requiresChannel().anyRequest().requiresSecure();
    }
}

第 5 步：在“Application.java”中添加以下代码

@Bean
    public ServletWebServerFactory servletContainer() {
        TomcatServletWebServerFactory tomcat = new TomcatServletWebServerFactory() {
            @Override
            protected void postProcessContext(Context context) {
                SecurityConstraint securityConstraint = new SecurityConstraint();
                securityConstraint.setUserConstraint("CONFIDENTIAL");
                SecurityCollection collection = new SecurityCollection();
                collection.addPattern("/*");
                securityConstraint.addCollection(collection);
                context.addConstraint(securityConstraint);
            }
        };
        tomcat.addAdditionalTomcatConnectors(redirectConnector());
        return tomcat;
    }
private Connector redirectConnector() {
        Connector connector = new Connector(TomcatServletWebServerFactory.DEFAULT_PROTOCOL);
        connector.setScheme("http");
        connector.setPort(80);
        connector.setSecure(false);
        connector.setRedirectPort(443);
        return connector;
    }

添加上述所有代码和配置更改后。 I am getting the below exception when I start the spring boot application - Caused by: org.springframework.boot.web.server.WebServerException: Could not load key store 'classpath:certificate.p12' Caused by: java.io.FileNotFoundException: class path resource [certificate.p12] cannot be resolved to URL because it does not exist 。 请帮助解决此问题。 提前致谢！