springboot本地启动，访问路径正常，外部tomcat运行，接口访问404

￡神魔★判官ぃ 2023-05-28 14:23 47阅读 0赞

## **1、案例介绍：** ##

### **  1.1结构：** ###

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70][]

###    1.2 pom.xml： ###

<parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.2.5.RELEASE</version>
            <relativePath/> 
        </parent>
      
         .....................................................
        <properties>
            <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>
                <exclusions>
                    <exclusion>
                        <groupId>org.junit.vintage</groupId>
                        <artifactId>junit-vintage-engine</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
        </dependencies>

###     1.3 Controller层代码： ###

@RestController
    public class TestController {
    
        @GetMapping(value = "/")
        public String test1() {
            return "hello world";
        }
    
    
        @GetMapping(value = "/test")
        public Map<String, Object> test() {
            Map<String, Object> map = new HashMap<>();
            map.put("张三", 1);
            map.put("李四", 2);
            return map;
        }
    
    }

### 1.4 spring boot的启动类 ###

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

### 1.5 简述 ###

**application.yaml中任何配置。**

**很简单的spring boot demo而已。在本地用直接run启动。完全ok。**

**并且浏览器访问localhost:8080（这里application.yaml并未配置****server.servlet. context-path），可以在浏览器看到**

![20200321195016152.png][]

## **2、问题** ##

**        就是这个简单的demo在本地用idea中，run启动，完全没有任何问题，但是使用maven打包成war包，然后使用tomcat启动，再去访问****localhost:8080/项目名 (ps：这里跟springboot中用内置tomcat运行，访问路径不太一样)。**

**       使用maven打完包后：demo-0.0.1-SNAPSHOT.war，将其改名demo.war丢到tomcat的webapps下。在bin目录中运行.status.bat运行tomcat。**

**访问浏览器****localhost:8080/demo：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 1][]

## 3.解决 ##

###     3.1 引入spring-boot-starter-tomcat ###

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

###    3.2 启动类 ###

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 DebugDemoApplication extends SpringBootServletInitializer {
    
        public static void main(String[] args) {
            SpringApplication.run(DebugDemoApplication.class, args);
        }
    
        @Override
        protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
            return application.sources(DebugDemoApplication.class);
        }
    }

**以上修改完毕后，使用idea再次run启动，访问浏览器localhost:8080:**

![20200321200451210.png][]

**再次打包、重命名、并启动tomcat服务器，查看放在外部tomcat服务器中的效果：**

![20200321200906834.png][]

**所以，综上问题已解决。**

**ps:**

**       本地springboot启动与tomcat服务器启动访问的接口的路径不太一致，这里解决也很简单，在spring boot的主配置文件application.yml中添加一段配置：**

server:
      servlet:
        context-path: /demo   #项目名

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70]: /images/20230528/bdcfc24619a64d88bdc1674089335219.png
[20200321195016152.png]: /images/20230528/f784090ca43f414a9d5e60227c447142.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM3NDk1Nzg2_size_16_color_FFFFFF_t_70 1]: /images/20230528/c604b33b71874730b1dda6fb08ee2eb7.png
[20200321200451210.png]: https://img-blog.csdnimg.cn/20200321200451210.png
[20200321200906834.png]: https://img-blog.csdnimg.cn/20200321200906834.png