找不到Spring Tomcat 404资源

Question

我正在尝试在Tomcat安装中使用Spring部署一个简单的REST api，但是我得到的是在部署战争时找不到404资源。它在localhost上运行完美，但部署不起作用。在stackoverflow上尝试了每个解决方案，但几乎所有解决方案都使用配置文件而不是配置注释。这是我的（重要）代码。

slember.gradle

 buildscript {
    ext {
        springBootVersion = '1.4.1.RELEASE'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'spring-boot'
apply plugin: 'idea'
apply plugin: 'war'

springBoot{
    executable = true
}

war {
    baseName = 'slember'
}

jar {
    baseName = 'slember'
}
sourceCompatibility = 1.7
targetCompatibility = 1.7

repositories {
    mavenCentral()
}


dependencies {
    compile('org.springframework.boot:spring-boot-starter-web')
    compile("org.springframework.boot:spring-boot-starter-data-jpa")
    compile 'org.hibernate:hibernate-core:5.0.9.Final'
    compile("com.h2database:h2")
    testCompile('org.springframework.boot:spring-boot-starter-test')
    compile 'javax.servlet:javax.servlet-api:3.1.0'
    compile 'org.javassist:javassist:3.15.0-GA'
    compile 'mysql:mysql-connector-java:5.1.31'
    compile 'commons-dbcp:commons-dbcp:1.4'
    compile('org.springframework.boot:spring-boot-starter-jdbc')
    compileOnly "org.projectlombok:lombok:1.16.10"
    providedRuntime("org.springframework.boot:spring-boot-starter-tomcat")


}

SlemberApplication.java

@SpringBootApplication
@EntityScan(basePackageClasses = {
        SlemberApplication.class
})
public class SlemberApplication {

    public static AnnotationConfigApplicationContext context;

    public static void main(String[] args) {

        SpringApplication.run(SlemberApplication.class, args);
        context = new AnnotationConfigApplicationContext();
        context.register(AppConfig.class);
        context.refresh();
    }
}

META-INF / MANIFEST.MF

Manifest-Version: 1.0
Main-Class: com.letscode.SlemberApplication

Answer 1

SpringBootServletInitializer

您的代码示例仅显示main方法。部署为WAR时，不执行main。您需要扩展SpringBootServletInitializer：

@SpringBootApplication
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);
    }
}

来源：http://docs.spring.io/spring-boot/docs/current/reference/html/howto-traditional-deployment.html

顺便说一下，你为什么要使用AnnotationConfigApplicationContext来注册AppConfig，而不是让Spring Boot选择它？ 要么：

• AppConfig位于SlemberApplication的同一个包（或下方）中：默认情况下已加载;
• 移动SlemberApplication，使其高于（在包中）所有@Configuration/@Component类（然后前一点将适用）;
• 或您添加@ComponentScan以指定AppConfig的包。

您可以使用以下内容：

@ComponentScan(basePackageClasses={AppConfig.class, SlemberApplication.class})
@SpringBootApplication
public class SlemberApplication extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        super.configure(builder);
    }
    public static void main(String[] args) {
        new SpringApplicationBuilder().build().run(SlemberApplication.class, args);
    }
}