Java Spring Boot 是否可以提供带有 JAR 包装的 JSP？
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StackOverFlow
Is it possible with Spring Boot to serve up JSPs with a JAR packaging?
提问by checketts
I'm familiar with the Spring Boot JSP sample application
我熟悉 Spring Boot JSP 示例应用程序
However that example uses the WARpackaging. Is it possible to do the same with <packaging>JAR</packaging>?
但是，该示例使用了WAR包装。是否可以做同样的事情<packaging>JAR</packaging>？
My goal is to put JSPs under src/main/resources/jspto simplify the structure of my app.
我的目标是将JSPs放在下面src/main/resources/jsp以简化我的应用程序的结构。
采纳答案by MariuszS
As @Andy Wilkinson said, there are limitations related to JSP. Please package your application as warand execute as jar. This is documented at spring site.
正如@Andy Wilkinson 所说，JSP 存在一些限制。请将您的应用程序打包为war并执行为jar。这是在 spring 站点记录的。
With Tomcat it should work if you use war packaging, i.e. an executable war will work (...). An executable jar will not work because of a hard coded file pattern in Tomcat.
使用 Tomcat，如果您使用 war 打包，它应该可以工作，即可执行的 war 将工作（...）。由于 Tomcat 中的硬编码文件模式，可执行 jar 将无法工作。
Deprecated, old answer
已弃用，旧答案
Yes, this is possible with Spring Boot.
是的，这可以通过 Spring Boot 实现。
Take look at this example: https://github.com/mariuszs/spring-boot-web-jsp-example.
看看这个例子：https: //github.com/mariuszs/spring-boot-web-jsp-example。
For doing this use spring-boot-maven-pluginor gradle equivalent.
为此，请使用spring-boot-maven-plugin或 gradle 等效项。
With this plugin jar is executable and can serve JSP files.
有了这个插件 jar 是可执行的并且可以提供 JSP 文件。
$ mvn package
$ java -jar target/mymodule-0.0.1-SNAPSHOT.jar
or just
要不就
$ mvn spring-boot:run
回答by aliwister
Your best bet is to change the packaging type into war, and it should work without further changes.
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。
As mentioned in on of the comments above, there are some limitations:
正如上面的评论中提到的，有一些限制：
回答by Jo?o Paraná
I'm using JSP successfully on Spring BootApplication with jar packaging, putting my JSP files on src/main/webapp/WEB-INF/JSP directory and configuring my Application as bellow
我在带有jar 包装的Spring Boot应用程序上成功使用了JSP ，将我的 JSP 文件放在 src/main/webapp/WEB-INF/JSP 目录中，并将我的应用程序配置如下
@Bean
public InternalResourceViewResolver viewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/JSP/");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
My Controller is:
我的控制器是：
@Controller
public class HelloController {
@RequestMapping(value = { "/", "/hello**" }, method = RequestMethod.GET)
public ModelAndView welcomePage() {
ModelAndView model = new ModelAndView();
model.addObject("title", "Spring Security Example");
model.addObject("message", "This is Hello World!");
model.setViewName("hello");
System.out.println("° ° ° ° welcomePage running. model = " + model);
return model;
}
. . .
And my hello.jsp is
我的 hello.jsp 是
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@page session="true"%>
<html>
<body>
<h1>Title : ${title}</h1>
<h1>${message}</h1>
<h2>Options:
<a href="<c:url value="/hello" />" >Home</a> |
<a href="<c:url value="/admin" />" >Administration</a> |
<a href="<c:url value="/super" />" >Super user</a>
<c:if test="${pageContext.request.userPrincipal.name != null}"> |
<a href="<c:url value="/logout" />" >Logout</a>
</c:if>
</h2>
</body>
</html>
My pom.xml file is
我的 pom.xml 文件是
<groupId>br.com.joao-parana</groupId>
<artifactId>my-spring-boot-app</artifactId>
<packaging>jar</packaging>
<version>1.0</version>
<name>my-spring-boot-app Maven Webapp</name>
<url>http://maven.apache.org</url>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.4.RELEASE</version>
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
. . .
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
<build>
<finalName>my-spring-boot-app</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
I hope this help someone !
我希望这对某人有所帮助！
回答by Andrey Korkoshko
Hi I figer out how to copy jsp's from jar to embedded tomcat folder
嗨，我想出了如何将 jsp 从 jar 复制到嵌入式 tomcat 文件夹
package com.demosoft.stlb.loadbalancer;
import org.springframework.stereotype.Component;
import org.springframework.util.AntPathMatcher;
import org.springframework.web.context.ServletContextAware;
import javax.annotation.PostConstruct;
import javax.servlet.ServletContext;
import java.io.*;
import java.net.MalformedURLException;
import java.util.Enumeration;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;
@Component
public class JarFileResourcesExtractor implements ServletContextAware {
private String resourcePathPattern = "WEB-INF/**";
private String resourcePathPrefix = "WEB-INF/";
private String destination = "/WEB-INF/";
private ServletContext servletContext;
private AntPathMatcher pathMatcher = new AntPathMatcher();
/**
* Extracts the resource files found in the specified jar file into the destination path
*
* @throws IOException If an IO error occurs when reading the jar file
* @throws FileNotFoundException If the jar file cannot be found
*/
@PostConstruct
public void extractFiles() throws IOException {
try {
JarFile jarFile = (JarFile) getClass().getProtectionDomain().getCodeSource().getLocation().getContent();
Enumeration<JarEntry> entries = jarFile.entries();
System.out.println("Tomcat destination : " + servletContext.getRealPath(destination));
while (entries.hasMoreElements()) {
processJarEntry(jarFile, entries);
}
} catch (MalformedURLException e) {
throw new FileNotFoundException("Cannot find jar file in libs: ");
} catch (IOException e) {
throw new IOException("IOException while moving resources.", e);
}
}
private void processJarEntry(JarFile jarFile, Enumeration<JarEntry> entries) throws IOException {
JarEntry entry = entries.nextElement();
if (pathMatcher.match(resourcePathPattern, entry.getName())) {
String fileName = getFileName(entry);
if (checkFileName(fileName)) return;
String sourcePath = getSourcePath(entry, fileName);
if (checkSourcePath(sourcePath)) return;
copyAndClose(jarFile.getInputStream(entry), getOutputStream(fileName, sourcePath));
}
}
private FileOutputStream getOutputStream(String fileName, String sourcePath) throws IOException {
File destinationFolder = new File(servletContext.getRealPath(destination)+sourcePath);
destinationFolder.mkdirs();
File materializedFile = new File(destinationFolder, fileName);
materializedFile.createNewFile();
return new FileOutputStream(materializedFile);
}
private boolean checkSourcePath(String sourcePath) {
return sourcePath.startsWith(".idea");
}
private String getSourcePath(JarEntry entry, String fileName) {
String sourcePath = entry.getName().replaceFirst(fileName, "");
sourcePath = sourcePath.replaceFirst(resourcePathPrefix, "").trim();
return sourcePath;
}
private boolean checkFileName(String fileName) {
return fileName.trim().equals("");
}
private String getFileName(JarEntry entry) {
return entry.getName().replaceFirst(".*\/", "");
}
@Override
public void setServletContext(ServletContext servletContext) {
this.servletContext = servletContext;
}
public static int IO_BUFFER_SIZE = 8192;
private static void copyAndClose(InputStream in, OutputStream out) throws IOException {
try {
byte[] b = new byte[IO_BUFFER_SIZE];
int read;
while ((read = in.read(b)) != -1) {
out.write(b, 0, read);
}
} finally {
in.close();
out.close();
}
}
}
回答by jeet singh parmar
Spring Boot is pretty good with JSP and it's little easy also just you need below configuration
Spring Boot 对 JSP 非常好，而且它也很简单，只需要下面的配置
1 - tomcat-embad-jasper dependency
1 - tomcat-embad-jasper 依赖
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
2 - Add below configuration is application.properties
2 - 添加下面的配置是 application.properties
spring.mvc.view.prefix: /
spring.mvc.view.suffix: .jsp
That's it still have some doubt then check it out below link
那是它仍然有一些疑问然后查看下面的链接
回答by bhawnesh dipu
If your springboot is building your project and running it in local server correctly then YES.
What you need to do is to build the project using
mvn -U clean package.
Then in targetfolder you have your runnable xxxx.jar . Now what you have to do is put your xxxx.jar file in the server or where you want along with the src/main/webapp/WEB-INF/jsp/*.jspfiles in same hierarchy.
then try java -jar xxxx.jarYour project will run with no issue.
如果您的 springboot 正在构建您的项目并在本地服务器上正确运行它，那么YES。您需要做的是使用
mvn -U clean package. 然后在 目标文件夹中你有你的可运行 xxxx.jar 。现在您需要做的是将您的 xxxx.jar 文件放在服务器中或您想要的位置以及相同层次结构中的src/main/webapp/WEB-INF/jsp/*.jsp文件。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`
java -jar xxx.jar
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>
here the server is running
这里服务器正在运行
$ curl 127.0.0.1:8090/login
Welcome to Login page
$ curl 127.0.0.1:8090/login
Welcome to Login page
My POM.xml
我的 POM.xml
<code>
<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.myapp</groupId>
<artifactId>app</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Jsp Springboot</name>
<description>Jsp Springboot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath/>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<!-- Need this to compile JSP,
tomcat-embed-jasper version is not working, no idea why -->
<dependency>
<groupId>org.eclipse.jdt.core.compiler</groupId>
<artifactId>ecj</artifactId>
<version>4.6.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>3.3.7</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.2</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>rest</artifactId>
<version>5.5.1</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.0</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.16</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.16</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.16</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.3</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<useSystemClassLoader>false</useSystemClassLoader>
</configuration>
</plugin>
</plugins>
</build>
</project>
</code>
my application.properties
我的 application.properties
<code>
spring.mvc.view.prefix: /WEB-INF/jsp/
spring.mvc.view.suffix: .jsp
server.port=8090
</code>
My Project Structure
我的项目结构
<code>
.
├── src
│?? └── main
│?? ├── java
│?? │?? └── com
│?? │?? └── myapp
│?? │?? └── app
│?? │?? ├── mynewapp
│?? │?? ├── controller
│?? ├── resources
│?? │?? └── static
│?? │?? ├── assets
│?? │?? │?? ├── css
│?? │?? │?? │?? ├── fonts
│?? │?? │?? │?? └── lib
│?? │?? │?? ├── img
│?? │?? │?? └── js
│?? │?? │?? └── lib
│?? │?? ├── css
│?? │?? │?? └── img
│?? │?? ├── fonts
│?? │?? ├── images
│?? │?? └── js
│?? │?? └── img
│?? └── webapp
│?? └── WEB-INF
│?? ├── jsp
│?? └── lib
</code>
Thank You.
谢谢你。
回答by RBuser2769569
27.3.5 JSP limitations
When running a Spring Boot application that uses an embedded servlet container (and is packaged as an executable archive), there are some limitations in the JSP support.
With Tomcat it should work if you use war packaging, i.e. an executable war will work, and will also be deployable to a standard container (not limited to, but including Tomcat).
An executable jar will not work because of a hard coded file pattern in Tomcat.
With Jetty it should work if you use war packaging, i.e. an executable war will work, and will also be deployable to any standard container.
Undertow does not support JSPs.
Creating a custom error.jsp page won't override the default view for error handling, custom error pages should be used instead.
27.3.5 JSP 限制
在运行使用嵌入式 servlet 容器（并打包为可执行存档）的 Spring Boot 应用程序时，JSP 支持存在一些限制。
使用 Tomcat 时，如果您使用 war 打包，它应该可以工作，即可执行的 war 可以工作，并且还可以部署到标准容器（不限于，但包括 Tomcat）。
由于 Tomcat 中的硬编码文件模式，可执行 jar 将无法工作。
使用 Jetty，如果您使用 war 打包，它应该可以工作，即可执行的 war 将工作，并且也可以部署到任何标准容器。
Undertow 不支持 JSP。
创建自定义 error.jsp 页面不会覆盖错误处理的默认视图，而应使用自定义错误页面。
回答by code4kix
If for whatever reason, you can't deal with a war packaging, there's a hack. Full credit to thisguy for doing it for an older version of spring-boot.
如果出于某种原因，您无法处理战争包装，那就是黑客。完全归功于这个人为旧版本的 spring-boot 做这件事。
One way to do this is to personalize tomcat and add BOOT-INF/classesto tomcat's ResourceSet. In tomcat, all scanned resources are put into something called a ResourceSet. For example, the META-INF/resources of the application jar package in the servlet 3.0 specification is scanned and put into the ResourceSet.
一种方法是个性化 tomcat 并添加BOOT-INF/classes到 tomcat 的 ResourceSet。在 tomcat 中，所有扫描的资源都被放入一个叫做 ResourceSet 的东西中。比如servlet 3.0规范中应用jar包的META-INF/resources被扫描放入ResourceSet中。
Now we need to find a way to add the BOOT-INF/classes directory of the fat jar to the ResourceSet. We can do this through the tomcat LifecycleListener interface, in the Lifecycle.CONFIGURE_START_EVENTevent, get the BOOT-INF/classes URL, and then add this URL to the WebResourceSet. A complete example is here, but you can do this like so:
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 LifecycleListener 接口来实现，在Lifecycle.CONFIGURE_START_EVENT事件中，获取 BOOT-INF/classes 的 URL，然后将该 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));
}
});
}
}
};
}
}
And then use the LifecycleListener like so:
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");
}
}
}
回答by Sasuke Uchiha
I tried out all possible solution finally this helped me out.
Add the following dependencies in pom.xml
我最终尝试了所有可能的解决方案，这对我有所帮助。
在 pom.xml 中添加以下依赖
<!-- Need this to compile JSP -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<!-- Need this to compile JSP -->
<dependency>
<groupId>org.eclipse.jdt.core.compiler</groupId>
<artifactId>ecj</artifactId>
<version>4.6.1</version>
</dependency>
Add the view resolver to application.properties file.
将视图解析器添加到 application.properties 文件。
spring.mvc.view.prefix: /WEB-INF/jsp/
spring.mvc.view.suffix: .jsp
Once, we are done with above code, we will build our project, using maven commands and then execute as standalone jar using standard java's jar execution command.
完成上述代码后，我们将使用 maven 命令构建我们的项目，然后使用标准 java 的 jar 执行命令作为独立 jar 执行。
cd <TO_YOUR_PROJECT_DIR>
mvn clean package spring-boot:repackage
java -jar target/<YOUR_PROJECT_CREATED_JAR>
