springboot项目部署到tomcat浏览器报错404，如何解决？(语言-java)

Question

springboot项目部署到tomcat浏览器报错404

问题具体描述：

通过idea启动Main可以通过
http://localhost:8080/test
访问到结果
但是把项目打成war包放到tomcat/webapps下面再通过
http://localhost:8080/Test/test
访问会报错404（tomcat配置一切都是默认的）

tomcat项目目录：

浏览器报错：

启动类：

package com.gamejoye;


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;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@SpringBootApplication
@Controller
public class Main extends SpringBootServletInitializer {

    @RequestMapping("test")
    @ResponseBody
    public String test() {
        return "test page";
    }

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

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>
    <packaging>war</packaging>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.0.0-SNAPSHOT</version>
        <relativePath/> 
    </parent>
    <groupId>com.gamejoye</groupId>
    <artifactId>Blog</artifactId>
    <version>1.0-SNAPSHOT</version>
    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <java.version>17</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>com.corundumstudio.socketio</groupId>
            <artifactId>netty-socketio</artifactId>
            <version>1.7.22</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-nop</artifactId>
            <version>1.7.2</version>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>2.0.1</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.9</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.2.2</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>

    </dependencies>

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

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <releases>
                <enabled>false</enabled>
            </releases>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
        <pluginRepository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <releases>
                <enabled>false</enabled>
            </releases>
        </pluginRepository>
    </pluginRepositories>

</project>

Answer 1

你好，springnoot直接生启动就可以了，使用以下命令

java -jar jar包名带后缀 > catalina.log

如果一定要使用外置tomcat，是需要配置的，直接打成war是不行的。

1、首先安装外置tomcat，然后配置环境变量，把tomcat的bin目录加入Path环境变量中。

2、在pom.xml文件中添加如下依赖

<!--外置tomcat启动依赖-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
    <scope>provided</scope>
</dependency>

3、在application.properties文件中添加如下配置：

#外置tomcat启动配置
server.tomcat.basedir=/usr/local/tomcat
server.tomcat.protocol=org.apache.coyote.http11.Http11NioProtocol
server.port=8081

4、在启动类上添加注解：

@SpringBootApplication
@ComponentScan(basePackages = {"com.xxx.xxx"})
public class Application {

    public static void main(String[] args) {
        //重新定义tomcat路径
        System.setProperty("catalina.base", System.getProperty("user.dir") + "/tomcat");
        SpringApplication.run(Application.class, args);
    }

5、在项目根目录下新建一个文件夹tomcat，然后将外置tomcat的conf、webapps、lib、temp等文件夹拷贝到tomcat文件夹中。

6、在tomcat文件夹下新建一个文件夹webapps，将打包好的war包拷贝到webapps文件夹下，并将war包修改名字为ROOT.war，就可以通过外置tomcat启动springboot项目了。