在 tomcat 中部署 WAR [英] Deploying a WAR in tomcat

问题描述

我已经在 archlinux 上安装了 tomcat，我尝试了 tomcat7 和 tomcat8.根据包括官方文档在内的多个消息来源，部署 WAR 文件就像将其放入 webapps 文件夹(在我的例子中是/var/lib/tomcat7/webapps)一样简单.WAR 文件被炸毁.我无法弄清楚的是如何访问我的 Web 应用程序.在 localhost:8080 上有一个 tomcat 网页.我也试过 localhost:8080/name-of-the-war-file，但这只会让 HTTP 状态 404.

我用于测试的应用程序是关于 Spring Boot 的第一个指南:http://spring.io/guides/gs/spring-boot/>

我修改了 Maven 构建文件 pom.xml 以在运行mvn package"时生成一个 WAR 文件:

<modelVersion>4.0.0</modelVersion><groupId>org.springframework</groupId><artifactId>gs-spring-boot</artifactId><version>0.1.0</version><父母><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.2.2.RELEASE</version></父母><包装>战争</包装><依赖项><依赖><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></依赖><依赖><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-tomcat</artifactId><范围>提供</范围></依赖></依赖项><属性><java.version>1.7</java.version></属性><构建><插件><插件><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></插件></plugins></build></项目>

解决方案

除了修改 pom.xml 生成 WAR 文件外，还需要为 web 应用配置 tomcat.这以前是通过 web.xml 文件完成的.如今，这可以从应用程序本身内部归档.SpringBootServletInitializer 和 WebApplicationInitializer 是要寻找的线索.我发现让我全部运行的最简单方法是按以下方式修改 Application.java:

包你好；导入 java.util.Arrays;导入 org.springframework.boot.SpringApplication;导入 org.springframework.boot.autoconfigure.SpringBootApplication;导入 org.springframework.context.ApplicationContext;导入 org.springframework.boot.builder.SpringApplicationBuilder;导入 org.springframework.boot.context.web.SpringBootServletInitializer;@SpringBootApplication公共类应用程序扩展 SpringBootServletInitializer {@覆盖受保护的 SpringApplicationBuilder 配置(SpringApplicationBuilder 应用程序){返回 application.sources(Application.class);}公共静态无效主(字符串 [] args){ApplicationContext ctx = SpringApplication.run(Application.class, args);System.out.println("让我们检查一下 Spring Boot 提供的 bean:");String[] beanNames = ctx.getBeanDefinitionNames();Arrays.sort(beanNames);for (String beanName: beanNames) {System.out.println(beanName);}}}

现在我可以看到来自 Spring Boot 的问候！"http://localhost:8080/gs-spring-boot-0.1.0/(gs-spring-boot-0.1.0.war 是已部署的 WAR 文件的名称).

I've installed tomcat on archlinux, I tried both tomcat7 and tomcat8. According to several sources, including the official documentation, deploying a WAR file is as easy as dropping it in the webapps folder (which in my case is /var/lib/tomcat7/webapps). The WAR file gets exploded. What I can't figure out though is how to access my web application. On localhost:8080 there is a tomcat webpage. I also tried localhost:8080/name-of-the-war-file, but that only let to a HTTP Status 404.

The application I've used for testing is the first guide on spring boot: http://spring.io/guides/gs/spring-boot/

I've modified the maven build file pom.xml to produce a WAR file when running 'mvn package':

<?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-spring-boot</artifactId>
    <version>0.1.0</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.2.2.RELEASE</version>
    </parent>

    <packaging>war</packaging>

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

    <properties>
        <java.version>1.7</java.version>
    </properties>


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

</project>

解决方案

Apart from modifying the pom.xml to produce a WAR file, it is also neccessary to configure tomcat for the web application. This was formerly done via a web.xml file. Nowadays this can be archieved from within the application itself. SpringBootServletInitializer and WebApplicationInitializer are the cues to look for. The easiest way I found to get I all running was to modify Application.java in the following way:

package hello;

import java.util.Arrays;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;

@SpringBootApplication
public class Application extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(Application.class);
    }

    public static void main(String[] args) {
        ApplicationContext ctx = SpringApplication.run(Application.class, args);

        System.out.println("Let's inspect the beans provided by Spring Boot:");

        String[] beanNames = ctx.getBeanDefinitionNames();
        Arrays.sort(beanNames);
        for (String beanName : beanNames) {
            System.out.println(beanName);
        }
    }
}

Now I can see "Greetings from Spring Boot!" on http://localhost:8080/gs-spring-boot-0.1.0/ (with gs-spring-boot-0.1.0.war being the name of the deployed WAR file).

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