Spring 应用程序在启动时关闭

Question

I have this strange behaviour with my spring boot application where suddently the startup process doesn't work anymore. Here's the all the log: I really can't say what's wrong since it stopped working. I also fetched on git the remote version of the code that is deployed and working right now. I use Intellij Idea as IDE, I have already restarted the IDE and the laptop. I looked over the Internet but everyone having this issue has problems abot pom or dependency. I can't get a clue from the logs. Thanks in advance.

EDIT: Here is my 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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>it.reag</groupId>
        <artifactId>reag-common-api</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>reag-mailsender-batch</artifactId>

    <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>it.reag</groupId>
            <artifactId>reag-common-api-model</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <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>log4j</groupId>
            <artifactId>log4j</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
        </dependency>
        <dependency>
            <groupId>com.microsoft.sqlserver</groupId>
            <artifactId>mssql-jdbc</artifactId>
            <version>6.1.0.jre8</version>
        </dependency>
    </dependencies>


    <build>
        <finalName>MailSenderBatch</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

Note that if I change the spring-boot-starter dependency with spring-boot-starter-web the app works, but I don't understand why. I don't use any of the feature of web environment. Also, it worked perfectly until the other day with the spring-boot-starter dependency.

Answer 1

Leaving this answer as it may help others. If one defines a parent in pom like you have here:

<parent>
        <groupId>it.reag</groupId>
        <artifactId>reag-common-api</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>

Then a simple dependency of spring-boot-starter-web in this module pom may not be the same as you expected, it may be customized in parent, aka reag-common-api pom, servlet container may be removed there. This happens because of dependency hierachy rule in maven. In this way, in order to verify that a missing container is the reason why spring application starts and quits, one can use mvn dependency:tree to see if a tomcat or undertow or netty is shown as a container (not an exact expression).

In my project, this would be neede for submodule pom:

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-undertow</artifactId>
        </dependency>

As its parent has this:

            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
                <version>${spring-boot.version}</version>
                <exclusions>
                    <exclusion>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-starter-tomcat</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>