如何将Spring war文件部署到Tomcat？

Question

我一直在尝试使用Maven将RESTful服务转换为war文件并将其部署到Tomcat。 但是我收到的只是一个404未找到。 这些是我的代码：

@Configuration
@ComponentScan
@EnableAutoConfiguration
public class Application extends SpringBootServletInitializer {
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(Application.class);
    }
    public static void main(String[] args) throws Exception {
        SpringApplication.run(Application.class, args);
    }
}

这是Greeting.java：

public class Greeting {

    private final long id;
    private final String content;

    public Greeting(long id, String content) {
        this.id = id;
        this.content = content;
    }
}

这是我的控制器：

@RestController
public class GreetingController {

    private static final String template = "Hello, %s!";
    private final AtomicLong counter = new AtomicLong();

    @RequestMapping("/greeting")
    public Greeting greeting(@RequestParam(value="name", defaultValue="World") String name) {
        return new Greeting(counter.incrementAndGet(),
                        String.format(template, name));
    }
}

这是我的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>org.springframework</groupId>
<artifactId>gs-rest-service</artifactId>
<version>0.1.0</version>

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.2.3.RELEASE</version>
</parent>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>4.1.6.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-autoconfigure</artifactId>
        <version>1.2.3.RELEASE</version>
    </dependency>
</dependencies>

<properties>
    <java.version>1.7</java.version>
    <start-class>gs-rest-service-master.Application</start-class>
</properties>


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

<repositories>
    <repository>
        <id>spring-releases</id>
        <url>https://repo.spring.io/libs-release</url>
    </repository>
</repositories>
<pluginRepositories>
    <pluginRepository>
        <id>spring-releases</id>
        <url>https://repo.spring.io/libs-release</url>
    </pluginRepository>
</pluginRepositories>

<packaging>war</packaging>

其余的服务很有趣，因为我可以使用jar运行它。 但是当我将war文件移到/ webapp并运行localhost：8080 / rest / greeting时，它失败了。您能帮我吗？ （rest是rest服务的名称，greeting是功能）

Answer 1

您的Application类缺少一些注释

@Configuration
@ComponentScan
@SpringBootApplication
@EnableAutoConfiguration
public class Application extends SpringBootServletInitializer {
    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(Application.class);
    }
    public static void main(String[] args) throws Exception {
        SpringApplication.run(Application.class, args);
    }
}

还要确保您的pom文件具有以下依赖性

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

还将公共吸气剂添加到Greetings类中，以避免出现错误406，“找不到可接受的表示形式”

public class Greeting
{

    private final long   id;
    private final String content;

    public Greeting(long id, String content)
    {
        this.id = id;
        this.content = content;
    }

    /**
     * @return the id
     */
    public long getId()
    {
        return id;
    }

    /**
     * @return the content
     */
    public String getContent()
    {
        return content;
    }

}

Answer 2

春季启动将使其仅在以下情况下构建Web应用程序：

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

被添加。 您需要排除嵌入式tomcat

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

请参阅文档https://spring.io/blog/2014/03/07/deploying-spring-boot-applications