Spring Boot是否可以使用JAR打包来提供JSP

Question

Spring Boot是否可以使用JAR打包来提供JSP

che*_*tts 23 java spring spring-boot

我熟悉Spring Boot JSP示例应用程序

但是,该示例使用了WAR包装.是否可以这样做<packaging>JAR</packaging>？

我的目标是把JSPS以src/main/resources/jsp简化我的应用程序的结构.

Answer 1

Mar*_*szS 26

正如@Andy Wilkinson所说,JSP存在一些局限性.请将您的申请打包war并执行jar.这是在春季网站上记录的.

使用Tomcat它应该可以使用war包装,即可执行的战争将起作用(...).由于Tomcat中的硬编码文件模式,可执行jar将无法工作.

不推荐的,旧答案

是的,这可以通过Spring Boot实现.

看一下这个例子:https://github.com/mariuszs/spring-boot-web-jsp-example.

为此,请使用spring-boot-maven-plugin或gradle等效项.

有了这个插件,jar是可执行的,可以提供JSP文件.

$ mvn package
$ java -jar target/mymodule-0.0.1-SNAPSHOT.jar

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要不就

$ mvn spring-boot:run

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当您的应用程序打包为可执行的JAR文件时,JSP需要注意一些限制:https://github.com/spring-projects/spring-boot/tree/master/spring-boot#jsp-limitations (6认同)
@ben3000 http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-jsp-limitations (3认同)
不起作用.这个例子不起作用.所有页面404 (3认同)

Answer 2

小智 5

最好的办法是将包装类型更改为 war，它应该无需进一步更改即可工作。

正如上面的评论中提到的，有一些限制：

http://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-developing-web-applications.html#boot-features-jsp-limitations

Answer 3

bha*_*ipu 5

如果您的springboot正在构建您的项目并在本地服务器中正确运行它，则单击YES。您需要做的是使用构建项目 mvn -U clean package。然后在目标文件夹中，您具有可运行的xxxx.jar。现在，您要做的就是将xxxx.jar文件与src/main/webapp/WEB-INF/jsp/ * .jsp文件放在同一层次结构中的服务器中或所需的位置。然后尝试java -jar xxxx.jar 您的项目将毫无问题地运行。

`
.
??? src
?   ??? main
?       ??? webapp
?           ??? WEB-INF
?               ??? jsp
?               ?   ??? default.jsp
?               ?   ??? help.jsp
?               ?   ??? index.jsp
?               ?   ??? insert.jsp
?               ?   ??? login.jsp
?               ?   ??? modify.jsp
?               ?   ??? search.jsp
?               ?   ??? show.jsp
?               ??? web.xml
??? xxx.jar
??? xxx.jar.original`

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java -jar xxx.jar

<pre>    
$java -jar xxx.jar

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.5.4.RELEASE)

2017-09-05 19:31:05.009  INFO 10325 --- [           main] com.myapp.app.DemoApplication         : Starting DemoApplication v0.0.1-SNAPSHOT on dipu-HP with PID 10325 (/home/dipu/Documents/workspace-sts/jspjartest/xxx.jar started by dipu in /home/dipu/Documents/workspace-sts/jspjartest)
2017-09-05 19:31:05.014  INFO 10325 --- [           main] com.myapp.app.DemoApplication         : No active profile set, falling back to default profiles: default
2017-09-05 19:31:05.138  INFO 10325 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6e5e91e4: startup date [Tue Sep 05 19:31:05 IST 2017]; root of context hierarchy
2017-09-05 19:31:07.258  INFO 10325 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8090 (http)
2017-09-05 19:31:07.276  INFO 10325 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2017-09-05 19:31:07.278  INFO 10325 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.15
2017-09-05 19:31:08.094  INFO 10325 --- [ost-startStop-1] org.apache.jasper.servlet.TldScanner     : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2017-09-05 19:31:08.396  INFO 10325 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2017-09-05 19:31:08.401  INFO 10325 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 3267 ms
2017-09-05 19:31:08.615  INFO 10325 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'dispatcherServlet' to [/]
2017-09-05 19:31:08.617  INFO 10325 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'loginServlet' to [/loginServlet/]
2017-09-05 19:31:08.618  INFO 10325 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'uploadController' to [/uploadController/]
2017-09-05 19:31:08.622  INFO 10325 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-09-05 19:31:08.622  INFO 10325 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-09-05 19:31:08.623  INFO 10325 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-09-05 19:31:08.623  INFO 10325 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2017-09-05 19:31:09.137  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6e5e91e4: startup date [Tue Sep 05 19:31:05 IST 2017]; root of context hierarchy
2017-09-05 19:31:09.286  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/user-management]}" onto java.lang.String com.myapp.app.DemoController.user()
2017-09-05 19:31:09.288  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto java.lang.String com.myapp.app.DemoController.reload()
2017-09-05 19:31:09.290  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/show]}" onto java.lang.String com.myapp.app.DemoController.show()
2017-09-05 19:31:09.292  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/modify]}" onto java.lang.String com.myapp.app.DemoController.modify()
2017-09-05 19:31:09.293  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/admin]}" onto java.lang.String com.myapp.app.DemoController.admin()
2017-09-05 19:31:09.294  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/login]}" onto java.lang.String com.myapp.app.DemoController.login()
2017-09-05 19:31:09.294  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/faq-management]}" onto java.lang.String com.myapp.app.DemoController.faq()
2017-09-05 19:31:09.294  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/subject-area]}" onto java.lang.String com.myapp.app.DemoController.subject()
2017-09-05 19:31:09.295  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/Chat]}" onto java.lang.String com.myapp.app.DemoController.index()
2017-09-05 19:31:09.295  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/delete]}" onto java.lang.String com.myapp.app.DemoController.delete()
2017-09-05 19:31:09.296  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/result]}" onto java.lang.String com.myapp.app.DemoController.result()
2017-09-05 19:31:09.296  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/insert]}" onto java.lang.String com.myapp.app.DemoController.insert()
2017-09-05 19:31:09.300  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/fileUpload]}" onto java.lang.String com.myapp.app.DemoController.file()
2017-09-05 19:31:09.301  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/search]}" onto java.lang.String com.myapp.app.DemoController.search()
2017-09-05 19:31:09.301  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/help]}" onto java.lang.String com.myapp.app.DemoController.help()
2017-09-05 19:31:09.312  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/LoginServlet]}" onto public void com.myapp.app.LoginServlet.LoginServlet.doPost(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws javax.servlet.ServletException,java.io.IOException
2017-09-05 19:31:09.313  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/image],methods=[GET],produces=[text/html;charset=UTF-8]}" onto public java.lang.String com.myapp.app.controller.ImageController.image()
2017-09-05 19:31:09.316  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/authenticate],methods=[POST]}" onto public java.lang.String com.myapp.app.controller.AjaxController.authenticate(java.lang.String,java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.317  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/searchCompany],methods=[GET]}" onto public java.lang.String com.myapp.app.controller.AjaxController.getCompany(java.lang.String,java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.318  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/executeQuery],methods=[GET]}" onto public java.lang.String com.myapp.app.controller.AjaxController.executeQuery(java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String,java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.318  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/insertData],methods=[POST]}" onto public int com.myapp.app.controller.AjaxController.insertResources(java.lang.String,java.lang.String,java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.319  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/showData],methods=[GET]}" onto public java.lang.String com.myapp.app.controller.AjaxController.showResources(java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.319  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/searchData],methods=[POST]}" onto public java.lang.String com.myapp.app.controller.AjaxController.getSearchData(java.lang.String,java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.319  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/deleteData],methods=[POST]}" onto public java.lang.String com.myapp.app.controller.AjaxController.deleteData(java.lang.String,java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.320  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/modifyData],methods=[POST]}" onto public int com.myapp.app.controller.AjaxController.modifyData(java.lang.String,java.lang.String,java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.322  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/suggestWords],methods=[POST]}" onto public java.lang.String com.myapp.app.controller.AjaxController.suggestWords(java.lang.String,java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.322  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/authenticateUser],methods=[POST]}" onto public java.lang.String com.myapp.app.controller.AjaxController.authenticateUser(java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.323  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/insertJson],methods=[POST]}" onto public int com.myapp.app.controller.AjaxController.insertJsonResources(java.lang.String,java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.323  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/getvalue],methods=[GET]}" onto public java.lang.String com.myapp.app.controller.AjaxController.getResource(java.lang.String,java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.324  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/searchQuery],methods=[GET]}" onto public java.lang.String com.myapp.app.controller.AjaxController.getResources(java.lang.String,java.lang.String) throws java.io.IOException
2017-09-05 19:31:09.330  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/upload],methods=[POST]}" onto public void com.myapp.app.controller.UploadController.doPost(org.springframework.web.multipart.MultipartFile,javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) throws javax.servlet.ServletException,java.io.IOException
2017-09-05 19:31:09.333  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
2017-09-05 19:31:09.334  INFO 10325 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2017-09-05 19:31:09.388  INFO 10325 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-09-05 19:31:09.388  INFO 10325 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-09-05 19:31:09.461  INFO 10325 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-09-05 19:31:09.752  INFO 10325 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2017-09-05 19:31:09.861  INFO 10325 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8090 (http)
2017-09-05 19:31:09.867  INFO 10325 --- [           main] com.myapp.DemoApplication         : Started DemoApplication in 5.349 seconds (JVM running for 5.866)

</pre>

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服务器在这里运行

$ curl 127.0.0.1:8090/login Welcome to Login page

我的POM.xml

<code>
    

`
.
??? src
?   ??? main
?       ??? webapp
?           ??? WEB-INF
?               ??? jsp
?               ?   ??? default.jsp
?               ?   ??? help.jsp
?               ?   ??? index.jsp
?               ?   ??? insert.jsp
?               ?   ??? login.jsp
?               ?   ??? modify.jsp
?               ?   ??? search.jsp
?               ?   ??? show.jsp
?               ??? web.xml
??? xxx.jar
??? xxx.jar.original`
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    </code>

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我的application.properties

<code>
    spring.mvc.view.prefix: /WEB-INF/jsp/
    spring.mvc.view.suffix: .jsp
    server.port=8090
</code>

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我的项目结构

<code>
.
??? src
?   ??? main
?       ???

Answer 4

cod*_*kix 5

如果出于某种原因，你无法处理战争包装，那就有一个破解方法。完全归功于这个人为旧版本的 spring-boot 所做的事情。

实现此目的的一种方法是个性化 tomcat 并添加BOOT-INF/classes到 tomcat 的 ResourceSet。在 tomcat 中，所有扫描到的资源都放入称为 ResourceSet 的内容中。例如，扫描servlet 3.0规范中应用jar包的META-INF/resources，放入ResourceSet中。

现在我们需要想办法将fat jar的BOOT-INF/classes目录添加到ResourceSet中。我们可以通过tomcat的LifecycleListener接口来做到这一点，在Lifecycle.CONFIGURE_START_EVENT事件中，获取BOOT-INF/classes URL，然后将这个URL添加到WebResourceSet中。一个完整的例子在这里，但你可以这样做：

import org.apache.catalina.Context;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
import org.springframework.boot.web.server.WebServerFactory;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
@ConditionalOnProperty(name = "tomcat.staticResourceCustomizer.enabled", matchIfMissing = true)
public class TomcatConfiguration {
    @Bean
    public WebServerFactoryCustomizer<WebServerFactory> staticResourceCustomizer() {
        return new WebServerFactoryCustomizer<WebServerFactory>() {

        @Override
        public void customize(WebServerFactory factory) {
            if (factory instanceof TomcatServletWebServerFactory) {
                ((TomcatServletWebServerFactory) factory)
                        .addContextCustomizers(new org.springframework.boot.web.embedded.tomcat.TomcatContextCustomizer() {
                            @Override
                            public void customize(Context context) {
                                context.addLifecycleListener(new StaticResourceConfigurer(context));
                            }
                        });
                }
            }
        };
    }
}

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然后像这样使用 LifecycleListener：

import java.io.File;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.catalina.Context;
import org.apache.catalina.Lifecycle;
import org.apache.catalina.LifecycleEvent;
import org.apache.catalina.LifecycleListener;
import org.apache.catalina.WebResourceRoot.ResourceSetType;
import org.springframework.util.ResourceUtils;

public class StaticResourceConfigurer implements LifecycleListener {

    private final Context context;

    StaticResourceConfigurer(Context context) {
        this.context = context;
    }

    @Override
    public void lifecycleEvent(LifecycleEvent event) {
        if (event.getType().equals(Lifecycle.CONFIGURE_START_EVENT)) {
            URL location = this.getClass().getProtectionDomain().getCodeSource().getLocation();

            if (ResourceUtils.isFileURL(location)) {
                // when run as exploded directory
                String rootFile = location.getFile();
                if (rootFile.endsWith("/BOOT-INF/classes/")) {
                    rootFile = rootFile.substring(0, rootFile.length() - "/BOOT-INF/classes/".length() + 1);
                }
                if (!new File(rootFile, "META-INF" + File.separator + "resources").isDirectory()) {
                    return;
                }

                try {
                    location = new File(rootFile).toURI().toURL();
                } catch (MalformedURLException e) {
                    throw new IllegalStateException("Can not add tomcat resources", e);
                }
            }

            String locationStr = location.toString();
            if (locationStr.endsWith("/BOOT-INF/classes!/")) {
                // when run as fat jar
                locationStr = locationStr.substring(0, locationStr.length() - "/BOOT-INF/classes!/".length() + 1);
                try {
                    location = new URL(locationStr);
                } catch (MalformedURLException e) {
                    throw new IllegalStateException("Can not add tomcat resources", e);
                }
            }
            this.context.getResources().createWebResourceSet(ResourceSetType.RESOURCE_JAR, "/", location,
                    "/META-INF/resources");

        }
    }
}

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