Can not access deployed WAR file on Tomcat

问题

I have a Spring boot rest service project which works on my local machine. When I run the application as "Spring Boot App"

I can access the rest service by going to

http://127.0.0.1:8080/persons/all

and it returns JSON as it's supposed to.

I changed the pom.xml packaging to war, I then created a war by going to Run as -> Maven build in Spring tools suit. It creates a war file. When I upload the war file on http://myserverip:8080/manager/ I get no errors and it shows up under Applications

The war file name is "myapp-0.0.1-SNAPSHOT.war" after uploading it, I tried to access it by going to

http://myserverip:8080/myapp-0.0.1-SNAPSHOT/persons/all

But I get a 404 error

What am I doing wrong here?

my 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>com.mycompany</groupId>
    <artifactId>myapp</artifactId>
    <version>0.0.1-SNAPSHOT</version>

    <name>myapp</name>
    <description>myappapi</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.2.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

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

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

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

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


    <packaging>war</packaging>
</project>

When I build the application, I get the following logs

[INFO] Scanning for projects...
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building myapp 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ myapp ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ myapp ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ myapp ---
[INFO] Not copying test resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ myapp ---
[INFO] Not compiling test sources
[INFO] 
[INFO] --- maven-surefire-plugin:2.18.1:test (default-test) @ myapp ---
[INFO] Tests are skipped.
[INFO] 
[INFO] --- maven-war-plugin:2.6:war (default-war) @ myapp ---
[INFO] Packaging webapp
[INFO] Assembling webapp [myapp] in [C:\Users\me\Documents\workspace-sts-3.8.2.RELEASE\myapp\target\myapp-0.0.1-SNAPSHOT]
[INFO] Processing war project
[INFO] Webapp assembled in [586 msecs]
[INFO] Building war: C:\Users\me\Documents\workspace-sts-3.8.2.RELEASE\myapp\target\myapp-0.0.1-SNAPSHOT.war
[INFO] 
[INFO] --- spring-boot-maven-plugin:1.4.2.RELEASE:repackage (default) @ myapp ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 3.300 s
[INFO] Finished at: 2016-11-21T10:12:03-05:00
[INFO] Final Memory: 20M/243M
[INFO] ------------------------------------------------------------------------
[WARNING] The requested profile "pom.xml" could not be activated because it does not exist.

my MyappApplication.java

package com.mycompany;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableAutoConfiguration
@ComponentScan
public class MyappApplication {
    public static void main(String[] args) {
        SpringApplication.run(MyappApplication.class, args);
    }
}

回答1:

Refer: Packaging executable jar and war files

As mentioned in comments, you can deploy spring boot application traditionally by deploying war to a standalone tomcat instance. You need to make some changes to your MyappApplication.java class which has the main() method.

Make your MyappApplication to extend SpringBootServletInitializer and override its configure() method,

@SpringBootApplication
public class MyappApplication extends SpringBootServletInitializer {

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

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

}

The next step is to have packaging as war instead of the default jar which you already have.
Finally in your pom.xml change the embedded tomcat container's scope to provided, so that it doesn't conflict when you deploy to a separate instance.

回答2:

if you are changing jar to war of spring boot add following 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>

http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#build-tool-plugins-maven-packaging

回答3:

Checklist for changing a spring boot executable jar into a deployable war.

Change packaging in pom.xml to "war" from "jar"

As kuhajeyan mentioned, mark your embedded tomcat dependency as provided in the pom.xml.

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

Make your main spring boot application class extend SpringBootServletInitializer like this

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

From the documentations

来源：https://stackoverflow.com/questions/40712432/can-not-access-deployed-war-file-on-tomcat

标签

Spring

Tomcat

spring-boot

tomcat8

spring-web