I have include these dependency in pom.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>
Still i am getting javax.servlet.ServletException: java.lang.NoSuchMethodError: org.apache.el.lang.ELSupport.coerceToType(Ljavax/el/ELContext;Ljava/lang/Object;Ljava/lang/Class;)Ljava/lang/Object;
I also included one more dependency in pom.xml.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
Then the error changed to An exception occurred processing JSP page /WEB-INF/views/index.jsp at line 7 4: <%# page session="false" %> [[[[ JSTL CODE USING EXPRESSION LANGUAGE]]]
Everything is working fine in eclipse ide but not working on deploying on separate tomcat server.
You are getting below error because of the presence of tomcat-embed-el-8.0.32.jar in your Tomcat 8.0\webapps\AppName\WEB-INF\lib folder.
javax.servlet.ServletException: java.lang.NoSuchMethodError:
org.apache.el.lang.ELSupport.coerceToType(Ljavax/el/ELContext;Ljava/lang/Object;Ljava/lang/Class;)Ljava/lang/Object;
This error is due to the conflict between the ELSupport.class provided by Tomcat and tomcat-embed-el-8.0.32.jar present in the applications lib directory, hence you get that error in Tomcat. And it works fine in Eclipse since it uses embedded server.
To fix this issue add below code in your pom.xml:
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-el</artifactId>
<scope>provided</scope>
</dependency>
When you add tomcat-embed-el dependency as scope=required then the tomcat-embed-el-8.0.32.jar will not be added into your \AppName\WEB-INF\lib folder.
For information check this Issue on Spring-Boot's Github repository.
Also you can use these sample apps:
Spring-Boot-Jsp-Demo configured with InternalResourceViewResolver bean.
spring-boot-sample-tomcat-jsp configured with application.properties just like in the spring-boot sample apps.
Related
I have written a simple spring boot mvc application with jsp as view resolver.
Cofiguration inside application.properties
spring.mvc.view.prefix=/view/
spring.mvc.view.suffix=.jsp
There is a jsp file with the name returned from the Controller
Inside pom.xml
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-el</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
However, when I hit the controller, instead of displaying the jsp page, its getting downloaded as file. If I configure the internal resolver to .html, its working. But when I try to use the jsp extension, it's not working.
Spring Boot does a lot of magic out of box. But in situations like these, How to know the list of jars registered in the container? Please let me know where I am going wrong.
The application is deployed in pivotal web services and when I hit the application with the link https://webstore.cfapps.io/, the login.jsp page is not rendered.
The same application runs successfully in the local server. I tried for searching the same issue but none of them solve the problem. I used both STS deployment and also tried cf command line for deploying separately but couldn't get the result.
I am giving you the details.
The error shown.
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Sat Jan 14 04:21:40 UTC 2017
There was an unexpected error (type=Not Found, status=404).
/WEB-INF/jsp/login.jsp
My pom file is
http://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0
ecommerce.com
webstore
0.0.1-SNAPSHOT
jar
ecommerce-webstore
Demo project for Spring Boot
org.springframework.boot
spring-boot-starter-parent
1.4.2.RELEASE
UTF-8
UTF-8
1.8
org.springframework.boot</groupId> spring-boot-starter-security</artifactId>
</dependency> -->
org.springframework.boot
spring-boot-starter-web
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</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-data-jpa</artifactId>
</dependency>
<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>
<dependency>
<groupId>com.jayway.jsonpath</groupId>
<artifactId>json-path</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
org.springframework.boot
spring-boot-maven-plugin
3.MY application.properties file is
spring.mvc.view.prefix:/WEB-INF/jsp/
spring.mvc.view.suffix: .jsp
spring.datasource.url= jdbc:mysql://localhost:3306/ecommercestore
spring.datasource.username=root
spring.datasource.password=root
spring.jpa.hibernate.ddl-auto=update
3.The manifest.yml generated after deployment is
applications:
name: webstore
memory: 1024M
host: webstore
domain: cfapps.io
buildpack: standard buildpack provided in git hub. I am not writing link
services:
cleardb
The result after giving the following command from cmd is
cf push webstore -p target/webstore-0.0.1-SNAPSHOT.jar --no-start
......................................................................
C:\Users\santosh dahal\Desktop\excellerant\ecommerce-webstore>cf push webstore -p target/webstore-0.0.1-SNAPSHOT.jar --no-start
Creating app webstore in org santosh-org / space Myspace as santoshdahal2072#gmail.com...
OK
Using route webstore.cfapps.io
Binding webstore.cfapps.io to webstore...
OK
Uploading webstore...
Uploading app files from: C:\Users\SANTOS~1\AppData\Local\Temp\unzipped-app904639435
Uploading 478.9K, 140 files
Done uploading
OK
6. I went to myapp in pivotal and started the application after binding the database cleardb to the same instant and application, the application runs successfully with the Running Status
7. the folder arrangement is as follows:
I have kept jsp pages in
src/main/webapp/WEB-INF/jsp/login.jsp
While the application.properties is in src/main/resources.
I will provide more details if needed. the github link for the code is
here
you are packaging it as a jar not as a war . In that case put your jsp files into static folder under resources or follow the below the link to understand better on the packaging aspect. But I feel it is better to package it as a war
Package a spring boot application including JSPs and static resources.
Also please check the jar generated before pushing the app to PWS whether jsp is avaibale at the requested path.
I set up a spring boot application(1.4.0.RELEASE) with the following configuration
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
As expected, this ran with embedded Tomcat. I then thought of trying the same with a Jetty server and followed the steps mentioned in the documentation here:
Using Jetty instead of Tomcat
Basically excluding Tomcat and adding dependency for Jetty.Running mvn clean install from the command line or running the main method resulted in the following exception:
Caused by: javax.validation.ValidationException: HV000183: Unable to
load 'javax.el.ExpressionFactory'. Check that you have the EL
dependencies on the classpath, or use ParameterMessageInterpolator
instead
I could solve this by adding the following dependency in the pom.xml:
<dependency>
<groupId>javax.el</groupId>
<artifactId>javax.el-api</artifactId>
<version>3.0.0</version>
</dependency>
I am not directly using any validation related code but I suspect this is getting pulled from the spring boot jpa starter which pulls in Hibernate. I have also seen a discussion around this here: Similar issue
Questions:
1) Is this the right fix?
2) If it is the right fix, should the documentation be updated to add this dependency as well?
You are correct in using the javax.el dependency. When the JPA pulls in Hibernate as you stated, it will use the Hibernate Validator. It's specified here. This is the right fix. As for the documentation, I personally would raise it but I suspect not everyone will have the same issue. I still can run my mvn clean install without errors however if I run mvn spring-boot:run it starts up and shuts-down straight after.
I'm trying to run a Spring Boot app on Tomcat 7. From my understanding, it should be compatible with servlet 3.0 spec.
In my dependency, I mark tomcat as provided:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope> <!-- Mark as provided so it doesn't interfere when we deploy in container -->
</dependency>
Edit: And I've added the property <tomcat.version>7.0.59</tomcat.version>
But I still can't start it in tomcat. I'm getting this error:
Caused by: java.lang.NoSuchMethodError: javax.servlet.ServletContext.getVirtualServerName()Ljava/lang/String;
at org.apache.tomcat.websocket.server.WsServerContainer.(WsServerContainer.java:147)
at org.apache.tomcat.websocket.server.WsSci.init(WsSci.java:131)
at org.apache.tomcat.websocket.server.WsSci.onStartup(WsSci.java:47)
Which are because it apparently needs servlet spec 3.1.
Am I missing something?
The problem is, spring-boot also configure websocket support on spring-boot-starter-tomcat, which is includes by spring-boot-starter-web. And according to Apache, you must use Java 7 if you want web socket with Tomcat 7.
Here: http://tomcat.apache.org/whichversion.html
Either compile with Java 7 or exclude websocket support
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-websocket</artifactId>
</exclusion>
</exclusions>
</dependency>
According to the Spring Boot 1.2.3 Reference Docs.
Enabling jolokia seems to be as simple as adding as adding the following Maven dependency:
<dependency>
<groupId>org.jolokia</groupId>
<artifactId>jolokia-core</artifactId>
</dependency>
While this does work for a Spring Boot application packaged as a fat jar, I am unable to get this to work when packaged as a WAR file.
The root cause appears to be:
Caused by: java.lang.ClassNotFoundException: org.json.simple.JSONAware
I'm using STS for development purposes and deploying to an embedded pivotal tc Server 3.1. The dependency(json-simple-1.1.1.jar) containing the org.json.simple.JSONAware does appear under the Maven Dependency node so I'm not sure what the issue is.
So as I was composing the question I stumbled onto a solution that at least seems to work for me:
I took a look at the effective POM and found this dependency declaration:
<dependency>
<groupId>com.googlecode.json-simple</groupId>
<artifactId>json-simple</artifactId>
<version>1.1.1</version>
<optional>true</optional>
</dependency>
So for lack of better option I declared the following dependency explicitly
<dependency>
<groupId>com.googlecode.json-simple</groupId>
<artifactId>json-simple</artifactId>
<optional>false</optional>
</dependency>
Adding false to the the <optional> element seemed necessary.
Now I can access jolokia via the following url:
http://<myurl>:<myport>/<appcontext>/jolokia
Looking at 1.4.4 this seems to have been fixed:
<dependency>
<!-- Make json-simple non-optional.
It is marked optional in boot-dependencies, but required by jolokia-core.
Without this fix it would be missing when used war-packaging. -->
<groupId>com.googlecode.json-simple</groupId>
<artifactId>json-simple</artifactId>
<optional>false</optional>
</dependency>
Yet I'm seeing similar issues running a war in JBoss.