错误 [org.apache.velocity] ResourceManager：无法在任何资源加载器中找到资源 'layout.vm'

Question

MyController.java:

@Controller
public class ForemanController {

    @RequestMapping({"/index", "/"})
    public ModelAndView home(Model model){

        Map<String, String> map = new HashMap<String, String>();
        // .. fill map
        return new ModelAndView("index", "map", map);
    }   
}

ServletInitializer.java:

public class ServletInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class<?>[0];
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class<?>[]{AppConfig.class};
    }

    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
}

AppConfig.java:

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = {"com.my"})
public class AppConfig {

    @Bean
    public VelocityConfigurer velocityConfig(){
        VelocityConfigurer velocityConfig = new VelocityConfigurer();
        velocityConfig.setResourceLoaderPath("/");
        return velocityConfig;
    }

    @Bean
    public VelocityLayoutViewResolver viewResolver(){
        VelocityLayoutViewResolver viewResolver = new VelocityLayoutViewResolver();
        viewResolver.setCache(true);
        viewResolver.setPrefix("/WEB-INF/views/");
        viewResolver.setSuffix(".vm");
        return viewResolver;
    }

}

index.vm WEB-INF/views:

<!DOCTYPE HTML>
<html>
<head>
    <title>foreman</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
    hello world!
</body>
</html>

我部署到 Wildfly，部署成功，点击主页 'localhost:8080/myapp' 我得到 Internal Server Error:

2016-03-11 01:48:58,844 ERROR [org.apache.velocity] (default task-11) ResourceManager : unable to find resource 'layout.vm' in any resource loader.

我的项目中没有任何地方提到 'layout'。这是从哪里来的？

Answer 1

您的 bean viewResolver 中 VelocityLayoutViewResolver 的默认行为是搜索模板 layout.vm。

layout.vm 应作为由您的控制器确定的视图的框架或包装器。这非常方便，因为您无需为特殊视图和常规 HTML 页面如何合并而烦恼。

请参阅此 tutorial (start at 'Creating templates') and this question 了解详细信息。

错误 [org.apache.velocity] ResourceManager：无法在任何资源加载器中找到资源 'layout.vm'

ERROR [org.apache.velocity] ResourceManager : unable to find resource 'layout.vm' in any resource loader

java

spring

spring-mvc

velocity

resource-loading