如何为JSP配置spring boot mvc应用程序？

Question

我不熟悉Spring boot（和servlet 3.0）。我正在尝试用JSP作为视图创建spring mvc项目。当我从控制器返回一个视图时，它不会被解析为JstlView。

以下是我所做的：

@SpringBootApplication
public class MyApp extends SpringBootServletInitializer {

    public static void main(String[] args) {
        SpringApplication.run(MyApp.class, args);
    }

}

@Controller
public class MainController {

    @RequestMapping( value="/main" , method = RequestMethod.GET  )
    public String main(){
        return "main";
    }

    @RequestMapping( value="/" , method = RequestMethod.GET  )
    public String welcome(){
        return "welcome";
    }
}

两者都创造了。src\main\webapp\WEB-INF\jsp中的jsp文件。

在谷歌搜索之后，我发现我需要在应用程序中指定这一点。所以我在道具中添加了以下内容：

spring.mvc.view.prefix: /WEB-INF/jsp/
spring.mvc.view.suffix: .jsp


logging.level.org.springframework: TRACE
logging.level.com: TRACE

即使在这之后，它也不起作用。这是痕迹。

2016-04-24 19:54:49.016 TRACE 7880 --- [nio-8080-exec-1] .w.s.m.m.a.ServletInvocableHandlerMethod : Invoking [MainController.welcome] method with arguments []
2016-04-24 19:54:49.016 TRACE 7880 --- [nio-8080-exec-1] .w.s.m.m.a.ServletInvocableHandlerMethod : Method [welcome] returned [welcome]
2016-04-24 19:54:49.020 DEBUG 7880 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [text/html, application/xhtml+xml, image/webp, application/xml;q=0.9, */*;q=0.8] based on Accept header types and producible media types [*/*])
2016-04-24 19:54:49.020 DEBUG 7880 --- [nio-8080-exec-1] o.s.w.servlet.view.BeanNameViewResolver  : No matching bean found for view name 'welcome'
2016-04-24 19:54:49.022 DEBUG 7880 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Invoking afterPropertiesSet() on bean with name 'welcome'
2016-04-24 19:54:49.022 TRACE 7880 --- [nio-8080-exec-1] o.s.w.s.v.InternalResourceViewResolver   : Cached view [welcome]
2016-04-24 19:54:49.022 DEBUG 7880 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Returning [org.springframework.web.servlet.view.InternalResourceView: name 'welcome'; URL [/WEB-INF/jsp/welcome.jsp]] based on requested media type 'text/html'
2016-04-24 19:54:49.022 DEBUG 7880 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Rendering view [org.springframework.web.servlet.view.InternalResourceView: name 'welcome'; URL [/WEB-INF/jsp/welcome.jsp]] in DispatcherServlet with name 'dispatcherServlet'
2016-04-24 19:54:49.022 TRACE 7880 --- [nio-8080-exec-1] o.s.w.servlet.view.InternalResourceView  : Rendering view with name 'welcome' with model {} and static attributes {}
2016-04-24 19:54:49.026 DEBUG 7880 --- [nio-8080-exec-1] o.s.w.servlet.view.InternalResourceView  : Forwarding to resource [/WEB-INF/jsp/welcome.jsp] in InternalResourceView 'welcome'
2

正如您在跟踪中看到的，这是试图解析/jsp/welcome。jsp作为InternalResourceView而不是JstlView。最终它以404失败。

我还需要遵循哪些步骤？是否有使用jsp的SpringBoot-mvc教程？

另外，我可以用jsp通过web创建spring mvc应用程序。xml（在我的配置文件中使用JstlView）。但是我找不到任何关于Spring boot mvc和jsp的教程。

Answer 1

您不需要ViewResolver。波姆。正如Yura所说，xml需要上述依赖项，并将jsp文件放在src\main\webapp\WEB-INF\jsp中。

Answer 2

假设它嵌入了Tomcat，

你的pom中需要有以下内容。xml

    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-jasper</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
    </dependency>

嵌入式Tomcat核心包不支持JSP呈现。

Answer 3

@Bean
public ViewResolver getViewResolver(){
    InternalResourceViewResolver resolver = new InternalResourceViewResolver();
    resolver.setPrefix("/WEB-INF/jsp/");
    resolver.setSuffix(".jsp");
    resolver.setViewClass(JstlView.class);
    return resolver;
}

也需要，您的页面应该在 /webapp/WEB-INF/jsp/

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.tomcat.embed</groupId>
        <artifactId>tomcat-embed-jasper</artifactId>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
    </dependency>