SpringBoot外置Servlet容器

最新推荐文章于 2025-04-03 14:28:21 发布

lh_freak

最新推荐文章于 2025-04-03 14:28:21 发布

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本文链接：https://blog.youkuaiyun.com/jlihan/article/details/144803058

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文章目录

1.使用外置的Servlet容器
2.先创建出SpringBoot项目
3.将嵌入式的Tomcat指定为procided
4.设置项目的目录结构
5.部署Tomcat
6.编写SpringBootServletInitializer的子类
7.启动程序
8.原理

1.使用外置的Servlet容器

嵌入式Servlet容器：应用打成可执行的jar

优点：简单、便携；

缺点：默认不支持JSP、优化定制比较复杂.；

外置的Servlet容器：外面安装Tomcat—应用war包的方式打包；

操作步骤

2.先创建出SpringBoot项目

2.1创建一个普通的mavenjava项目

2.2在pom.xml中，设置打包方式为war包，引入父工程模板，左侧设置三级包结构

 <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.6</version>
        <relativePath/>
    </parent>

2.3引入springboot的stater、web的starter、thymeleaf的模板引擎

   		<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <!--加载web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

2.4创建启动类`SpringBootTomcatApplication`

package com.qcby.springbootTomcat;

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

@SpringBootApplication
public class SpringBootTomcatApplication {

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

2.5编写配置文件

application.yml

server:
  port: 8085
spring:
  mvc:
    view:
      prefix: /WEB-INF/pages
      suffix: .jsp

2.6编写页面和Controller

编写success.html和SuccessController

<!DOCTYPE HTML>
<!--命名空间-->
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <div th:text="111111111"></div>

</body>
</html>

package com.qcby.springbootTomcat.Controller;

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

@Controller
@RequestMapping("/user")
public class SuccessController {

    @RequestMapping("/test")
    public String success(){
        System.out.println("222222222");
        return "success";
    }
}

3.将嵌入式的Tomcat指定为procided

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

4.设置项目的目录结构

创建包结构

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>success</title>
</head>

<body>
    <h1>外部Tomcat的使用</h1>
</body>
</html>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
</web-app>

5.部署Tomcat

6.编写SpringBootServletInitializer的子类

必须编写一个SpringBootServletInitializer的子类，并调用configure方法

package com.qcby.springbootTomcat;

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

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