springboot web入门示例

最新推荐文章于 2025-05-10 09:56:17 发布

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本文详细介绍如何使用Eclipse、Maven和Spring Boot 1.5.2搭建项目，通过编辑pom.xml添加依赖，创建主类和启动类，实现与外部Tomcat服务器的集成。此外，还介绍了如何配置项目以便于在外部Tomcat中运行，包括创建必要的控制器类和调整打包方式。

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1. 工具

eclipse mar jdk1.8 maven 3.5.3 springboot 1.5.2

2. 创建项目 maven的webapp

3. 添加依赖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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot-starter-parent</artifactId>
       <version>1.5.2.RELEASE</version>
       <relativePath />
   </parent>

   <groupId>com.srpingboot</groupId>
   <artifactId>example</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <packaging>war</packaging>

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

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

</project>

4. 创建两个类

(1)项目的主类

package com.srpingboot.example;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class ExampleApplication {

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

}

(2) 使用外部tomcat时的启动类

当把项目部署在外部的tomcat里时需要创建这个类,继承SpringBootServletInitializer,重写configure方法

package com.srpingboot.example;

import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;

public class ServletInitializer extends SpringBootServletInitializer {

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

}

package com.srpingboot.example;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class IndexController {

   @RequestMapping("/a")
   public String toaa(){
       return "aa";
   }

5. 根据需要创建其他类和页面

6. 不需要web.xml文件,可根据需要配置application.properties文件

7. 打包后放tomcat的webapps目录,启动后访问http://127.0.0.1:8080/example/a