Vaadin应用程序可从命令行运行，但不能在IntelliJ中运行

Question

Utilities: IntelliJ, Glassfish server, Vaadin API

EDIT: I should mention that this is my first time using Vaadin

I have a simple Vaadin application that I'm trying to launch as a test. If I run it on the command line (with Maven) and launch it from the Glassfish Applications panel in the admin console, it works perfectly. When I try to use the same code in IntelliJ, I get a 404 error. I want to use IntelliJ for debugging purposes, so it's important that I get it to work from there as well. Here is the code I am using:

@Title("test")
@Theme("valo")
public class MyVaadinApplication extends UI {
    private String user;
    private String pwd;

    @WebServlet(value = "/*", asyncSupported = false)
    @VaadinServletConfiguration(productionMode = false, ui = MyVaadinApplication.class)
    public static class Servlet extends VaadinServlet {
    }

    @Override
    protected void init(VaadinRequest request) {

        FormLayout form = new FormLayout();
        setContent(form);

        TextField nameField = new TextField("Name:");
        PasswordField passField = new PasswordField("Password:");
        Button button = new Button("Login");

        form.addComponent(nameField);
        form.addComponent(passField);
        form.addComponent(button);

        button.addClickListener(new Button.ClickListener() {
            public void buttonClick(ClickEvent event) {
                user = nameField.getValue();
                pwd = passField.getValue();
            }
        });

    }
}

Here is the web.xml (it's pretty empty and irrelevant). From my understanding, if you use the @WebServlet and @VaadinServletConfiguration annotations, you do not need to specify any mappings/servlets in the web.xml file. Somebody please correct me if I'm wrong.

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<display-name>test</display-name>

<security-role>
    <role-name>admin</role-name>
</security-role>

<security-role>
    <role-name>user</role-name>
</security-role>

And finally my Maven 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>gov.bnl.cad</groupId>
<artifactId>test</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<properties>
    <vaadin.version>7.4.2</vaadin.version>
    <vaadin.plugin.version>${vaadin.version}</vaadin.plugin.version>
    <jetty.plugin.version>9.2.3.v20140905</jetty.plugin.version>
    <project.source.version>1.8</project.source.version>
    <project.target.version>1.8</project.target.version>
    <project.encoding>UTF-8</project.encoding>
</properties>
<distributionManagement>
    <repository>
        <id>CAD Repo</id>
        <url>file:///usr/common/jar/cad-repo</url>
    </repository>
    <site>
        <id>${project.artifactId}</id>
        <url>/usr/common/jar/cad-repo/${project.artifactId}</url>
    </site>
</distributionManagement>
<repositories>
    <repository>
        <id>CAD Repo</id>
        <url>file:///usr/common/jar/cad-repo/</url>
    </repository>
    <repository>
        <id>vaadin-addons</id>
        <url>http://maven.vaadin.com/vaadin-addons</url>
    </repository>
    <repository>
        <id>vaadin-snapshots</id>
        <url>https://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
        <releases>
            <enabled>false</enabled>
        </releases>
        <snapshots>
            <enabled>true</enabled>
        </snapshots>
    </repository>
</repositories>

<dependencies>
    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
        <version>6.0</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.0.1</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-server</artifactId>
        <version>${vaadin.version}</version>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-themes</artifactId>
        <version>${vaadin.version}</version>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-push</artifactId>
        <version>${vaadin.version}</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>3.0-alpha-1</version>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-client</artifactId>
        <version>${vaadin.version}</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-client-compiled</artifactId>
        <version>${vaadin.version}</version>
    </dependency>
    <dependency>
        <groupId>com.vaadin</groupId>
        <artifactId>vaadin-client-compiler</artifactId>
        <version>${vaadin.version}</version>
    </dependency>
    <dependency>
        <groupId>gov.bnl.cad</groupId>
        <artifactId>pageParser</artifactId>
        <version>1.0-SNAPSHOT</version>
    </dependency>
    <dependency>
        <groupId>gov.bnl.cad</groupId>
        <artifactId>rcs-cad</artifactId>
        <version>1.0-SNAPSHOT</version>
    </dependency>
</dependencies>


<build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>exec-maven-plugin</artifactId>
                <version>1.4.0</version>
                <executions>
                    <execution>
                        <phase>generate-sources</phase>
                        <goals>
                            <goal>java</goal>
                        </goals>
                        <configuration>
                            <classpathScope>compile</classpathScope>
                            <mainClass>com.vaadin.sass.SassCompiler</mainClass>
                            <arguments>
                                <argument>src/main/webapp/VAADIN/themes/dashbuilder/styles.scss</argument>
                            </arguments>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.0</version>
                <configuration>
                    <encoding>${project.encoding}</encoding>
                    <source>${project.source.version}</source>
                    <target>${project.target.version}</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <version>2.6</version>
                <configuration>
                    <encoding>${project.encoding}</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                    <!-- Exclude some unnecessary files generated by the GWT compiler. -->
                    <packagingExcludes>WEB-INF/classes/VAADIN/gwt-unitCache/**,
                        WEB-INF/classes/VAADIN/widgetsets/WEB-INF/**</packagingExcludes>
                </configuration>
            </plugin>
            <plugin>
                <groupId>com.vaadin</groupId>
                <artifactId>vaadin-maven-plugin</artifactId>
                <version>${vaadin.plugin.version}</version>
                <configuration>
                    <extraJvmArgs>-Xmx512M -Xss1024k</extraJvmArgs>
                    <webappDirectory>${basedir}/target/classes/VAADIN/widgetsets</webappDirectory>
                    <draftCompile>false</draftCompile>
                    <compileReport>false</compileReport>
                    <style>OBF</style>
                    <strict>true</strict>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>clean</goal>
                            <goal>resources</goal>
                            <goal>update-theme</goal>
                            <goal>update-widgetset</goal>
                            <goal>compile-theme</goal>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-source-plugin</artifactId>
                <version>2.4</version>
            </plugin>

            <!-- The Jetty plugin allows us to easily test the development build by
                running jetty:run on the command line. -->
            <plugin>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>${jetty.plugin.version}</version>
                <configuration>
                    <scanIntervalSeconds>2</scanIntervalSeconds>
                </configuration>
            </plugin>
        </plugins>
    </pluginManagement>
</build>

Any help is greatly appreciated. Thank you!

Answer 1

With Servlet 3+ you don't need to use web.xml at all, given annotations are provided in your code. So you can just delete that file if you want. If you use web.xml it will override your annotated settings.

So delete your web.xml file and change value = "/*" to urlPatterns = "/*" in @WebServlet annotation then try again.

If it still doesn't work, you need to check your IntelliJ run configurations explicitly. Your server might not be configured properly in the IDE.