java - 带有嵌入式 Tomcat 的 Spring WebMVC 在 jsp 上提供 404
问题描述
我正在尝试在嵌入式 Tomcat 上运行的 Spring WebMVC webapp 中处理 JSP,但是我的所有请求都返回 404:
TRACE 2020-08-23T14:45:50.566 [http-nio-8080-exec-1] o.s.web.servlet.DispatcherServlet(LogFormatUtils.java:88) GET "/", parameters={}, headers={masked} in DispatcherServlet 'dispatcherServlet'
TRACE 2020-08-23T14:45:50.568 [http-nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory(AbstractBeanFactory.java:258) Returning cached instance of singleton bean 'websiteController'
TRACE 2020-08-23T14:45:50.569 [http-nio-8080-exec-1] o.s.w.s.m.m.a.RequestMappingHandlerMapping(AbstractHandlerMapping.java:411) Mapped to com.test.web.WebsiteController#homepage()
TRACE 2020-08-23T14:45:50.574 [http-nio-8080-exec-1] o.s.w.s.m.m.a.ServletInvocableHandlerMethod(InvocableHandlerMethod.java:136) Arguments: []
TRACE 2020-08-23T14:45:50.577 [http-nio-8080-exec-1] com.test.view.SimpleViewResolver(SimpleViewResolver.java:38) No resource found for viewName=index
TRACE 2020-08-23T14:45:50.579 [http-nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory(AbstractAutowireCapableBeanFactory.java:1839) Invoking afterPropertiesSet() on bean with name 'index'
TRACE 2020-08-23T14:45:50.579 [http-nio-8080-exec-1] o.s.web.servlet.DispatcherServlet(DispatcherServlet.java:1367) Rendering view [org.springframework.web.servlet.view.JstlView: name 'index'; URL [/templates/jsp/index.jsp]]
DEBUG 2020-08-23T14:45:52.089 [http-nio-8080-exec-1] o.s.web.servlet.view.JstlView(AbstractView.java:309) View name 'index', model {}
DEBUG 2020-08-23T14:45:52.092 [http-nio-8080-exec-1] o.s.web.servlet.view.JstlView(InternalResourceView.java:169) Forwarding to [/templates/jsp/index.jsp]
23-Aug-2020 15:25:31.487 FINE [http-nio-8080-exec-1] org.apache.jasper.servlet.JspServlet.service JspEngine --> /templates/jsp/index.jsp
23-Aug-2020 15:25:31.487 FINE [http-nio-8080-exec-1] org.apache.jasper.servlet.JspServlet.service ServletPath: /templates/jsp/index.jsp
23-Aug-2020 15:25:31.487 FINE [http-nio-8080-exec-1] org.apache.jasper.servlet.JspServlet.service PathInfo: null
23-Aug-2020 15:25:31.488 FINE [http-nio-8080-exec-1] org.apache.jasper.servlet.JspServlet.service RealPath: null
23-Aug-2020 15:25:31.488 FINE [http-nio-8080-exec-1] org.apache.jasper.servlet.JspServlet.service RequestURI: /templates/jsp/index.jsp
23-Aug-2020 15:25:31.488 FINE [http-nio-8080-exec-1] org.apache.jasper.servlet.JspServlet.service QueryString: null
DEBUG 2020-08-23T14:45:52.097 [http-nio-8080-exec-1] o.s.web.servlet.DispatcherServlet(FrameworkServlet.java:1131) Completed 404 NOT_FOUND, headers={}
这是我配置应用程序的方式:
package com.test.context;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@Configuration
@ComponentScan("com.test")
@EnableWebMvc()
public class ApplicationConfiguration
{
@Bean
public InternalResourceViewResolver internalResourceViewResolver()
{
InternalResourceViewResolver internalResourceViewResolver = new InternalResourceViewResolver();
internalResourceViewResolver.setPrefix("/templates/jsp/");
internalResourceViewResolver.setSuffix(".jsp");
return internalResourceViewResolver;
}
}
我的控制器:
package com.test.web;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
@Controller
public class WebsiteController
{
@GetMapping("/")
public String homepage()
{
return "index";
}
}
我在我的主类中手动配置 Tomcat:
package com.test;
import com.test.context.ApplicationConfiguration;
import org.apache.catalina.Context;
import org.apache.catalina.LifecycleException;
import org.apache.catalina.Wrapper;
import org.apache.catalina.startup.Tomcat;
import org.apache.jasper.servlet.JspServlet;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;
public class ApplicationLauncher
{
public static void main(String[] args) throws LifecycleException
{
Tomcat tomcat = new Tomcat();
tomcat.setPort(8080);
tomcat.getConnector();
Context ctx = tomcat.addContext("", null);
// Tomcat JSP Servlet
Wrapper jspServlet = Tomcat.addServlet(ctx, "jsp", new JspServlet());
jspServlet.setLoadOnStartup(1);
jspServlet.addMapping("*.jsp");
// Spring DispatcherServlet
AnnotationConfigWebApplicationContext appCtx = new AnnotationConfigWebApplicationContext();
appCtx.register(ApplicationConfiguration.class);
appCtx.setServletContext(ctx.getServletContext());
appCtx.registerShutdownHook();
appCtx.refresh();
DispatcherServlet dispatcherServlet = new DispatcherServlet(appCtx);
Wrapper servletWrapper = Tomcat.addServlet(ctx, "dispatcherServlet", dispatcherServlet);
servletWrapper.setLoadOnStartup(2);
servletWrapper.addMapping("/");
tomcat.start();
}
这是我的 pom.xml:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.test</groupId>
<artifactId>springjsp</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<maven.compiler.source>14</maven.compiler.source>
<maven.compiler.target>14</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<version>9.0.37</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>5.2.8.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
</plugin>
</plugins>
</build>
</project>
似乎我的请求可以达到 JspServlet (如上面的日志输出所证明的那样,并且它达到了 中的断点JspServlet.service()
),但我不知道如何将其配置为实际工作。
该 jsp 位于{project dir}/src/main/resources/templates/jsp/
. 我试过提供一个绝对路径internalResourceViewResolver.setPrefix()
,但结果是一样的。
解决方案
尝试以下依赖项
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
代替
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<version>9.0.37</version>
</dependency>
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