java - 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，但我得到的只是部署 war 时未找到 404 资源。它在本地主机上运行完美，但部署就是行不通。尝试了 stackoverflow 上的每个解决方案，但几乎都使用配置文件而不是配置注释。这是我的(重要的)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了一个 main 方法。部署为 WAR 时，不会执行 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

顺便说一句，为什么你使用 AnnotationConfigApplicationContext 来注册 AppConfig 而不是让 Spring Boot 获取它？要么:

• AppConfig 与您的 SlemberApplication 位于同一包(或下方):默认加载；
• 移动 SlemberApplication 使其(在包中)高于所有 @Configuration/@Component 类(然后前一点将适用)；<
• 或者您添加 @ComponentScan 以指定 AppConfig 的包。

你可以使用这样的东西:

@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);
    }
}