在tomcat上部署Spring Boot WAR文件显示错误404

Question

我尝试在独立的Tomcat7.0.91上部署Gradle+Spring Boot2+Angular2应用程序WAR文件。如果我用提供的jar和嵌入的tomcat引导应用程序，一切正常，但是当我在独立容器上部署时，当我转到“/springboot”上下文时，它给我404：“源服务器没有找到目标资源的当前表示，或者不愿意公开存在的表示。”来自tomcat的日志没有显示任何有用的信息。通过在server.xml上下文路径和文档库中设置，我尝试了两种部署方法：

<Host name="localhost"  appBase="webapps" unpackWARs="true" autoDeploy="true">
    <Context path="/springboot" docBase="/home/user/SideProjects/springboot-angular2-gradle-war/build/libs"/>                                                     
</Host>

其次是在webapps目录中“手工”部署war文件。

 buildscript {
    ext {
        springBootVersion = '2.0.5.RELEASE'
    }
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

apply plugin: 'java'
apply plugin: 'idea'
apply plugin: 'org.springframework.boot'
apply plugin: 'io.spring.dependency-management'
apply plugin: 'war'

apply plugin: 'application'
mainClassName = "com.demo.SpringbootAngular2GradleWarApplication"

group = 'com.demo'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = 1.8

war {
    baseName = "demo-spring"
}

repositories {
    mavenCentral()
}

configurations {
    providedRuntime
}

dependencies {
    compile('org.springframework.boot:spring-boot-starter-web')
    providedRuntime('org.springframework.boot:spring-boot-starter-tomcat')
    testCompile('org.springframework.boot:spring-boot-starter-test')
}


def frontendDir = "$projectDir/src/main/frontend"
def frontDistDir = "$frontendDir/dist"

sourceSets {
    main {
        resources {
            srcDirs = ["$frontDistDir", "$projectDir/src/main/resources"]
        }
    }
}

clean.doFirst {
    delete "$frontDistDir"
    println "$frontDistDir - cleaned"
}

task buildAngular(type: Exec) {
    workingDir "$frontendDir"
    inputs.dir "$frontendDir"
    commandLine "npm", "run-script", "build"
}

processResources.dependsOn "buildAngular"

Main类扩展servlet初始值设定项：

 package com.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;

@SpringBootApplication
public class SpringbootAngular2GradleWarApplication extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(SpringbootAngular2GradleWarApplication.class);
    }

    public static void main(String[] args) {
        SpringApplication.run(SpringbootAngular2GradleWarApplication.class, args);
    }
}

Answer 1

问题是版本不兼容，SpringBoot-2支持的最小Tomcat版本是8.5.x，以便el-api和更多版本。实际上，在webapps中删除war并将其“手工”重命名是有效的。