spring-boot - java.io.FileNotFoundException :/BOOT-inf/classes!/templates/

Question

我正在使用springboot创建一个项目，运行idea没有错误，但是，运行app.jar文件，它运行异常是这样的

java.io.FileNotFoundException: class path resource [templates/] cannot be resol
ed to absolute file path because it does not reside in the file system: jar:fil
:/E:/projects/help/target/zhx-help-0.0.1-SNAPSHOT.jar!/BOOT-INF/classes!/templa
es/
    at org.springframework.util.ResourceUtils.getFile(ResourceUtils.java:21
)
    at org.springframework.core.io.AbstractFileResolvingResource.getFile(Ab
tractFileResolvingResource.java:52)
    at org.springframework.ui.freemarker.FreeMarkerConfigurationFactory.get
emplateLoaderForPath(FreeMarkerConfigurationFactory.java:338)
    at org.springframework.ui.freemarker.FreeMarkerConfigurationFactory.cre
teConfiguration(FreeMarkerConfigurationFactory.java:290)
    at org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer
   afterPropertiesSet(FreeMarkerConfigurer.java:116)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBea
Factory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBea
Factory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBea
Factory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBea
Factory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getO
ject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegist
y.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetB
an(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBea
(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory

springboot版本:1.5.2

使用 spring-data-jpa

Answer 1

我看到你使用 freemarker。在 Spring Boot 中，您无法使用正常的 File 方法来获取模板，因为当您运行可执行 JAR 时，它们无法访问(File 在内部时无法作为资源加载) JAR)

使用以下方法加载模板文件夹:

cfg.setTemplateLoader(new ClassTemplateLoader(getClass().getClassLoader(), "templates"));

完整示例:

@Configuration
public class FreemarkerConfiguration {

    @Bean
    public freemarker.template.Configuration freemarkerConfig() throws IOException {
        freemarker.template.Configuration cfg = new freemarker.template.Configuration(freemarker.template.Configuration.VERSION_2_3_23);
        cfg.setTemplateLoader(new ClassTemplateLoader(getClass().getClassLoader(), "templates"));
        cfg.setDefaultEncoding("UTF-8");
        cfg.setTemplateExceptionHandler(TemplateExceptionHandler.RETHROW_HANDLER);
        cfg.setLogTemplateExceptions(false);
        return cfg;
    }

}