Вопрос

I created maven project "File->New->Other..->Maven->Maven Project"
I created controller + view, "Hello World" and everything worked well.
I foolishly decided to click RightClick(on project)->Maven->Update Project (tomcat was running).
On the project appeared "red exclamation" and "HelloWorld" doesnt work.

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Screen after "my updating"

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pom.xml

<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mdosoft</groupId>
  <artifactId>Primer</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>Primer Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>3.2.6.RELEASE</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.0.1</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>jstl</artifactId>
        <version>1.2</version>
        <scope>provided</scope>
    </dependency>
  </dependencies>
  <build>
    <finalName>Primer</finalName>
  </build>
</project>
Это было полезно?

Решение

Run mvn clean package ensure that all the jars are inside of lib folder. If it doesn't work change servlet api version to 2.5

Другие советы

Can you provide pom.xml file, Check The Scope Of servlet api-3.0.1 depaendency,it must be provided

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