SpringBoot入门，html页面提交form表单，后端接收数据，后端处理返回数据给html页面

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已于 2024-04-16 11:34:35 修改

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文章标签： spring boot html

于 2024-04-16 10:01:04 首次发布

本文链接：https://blog.youkuaiyun.com/qq_65455837/article/details/137809980

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本文详细介绍了使用IDEA创建SpringBoot项目的步骤，包括创建pom.xml文件、编写启动类、配置服务端口、创建Controller以及HTML页面的交互。展示了如何在MyController中处理POST请求并返回数据。

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一、idea创建SpringBoot项目步骤

1.File->New->project
2. 在这里插入图片描述
3.

二、代码开发

1.html页面代码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="http://localhost:8080/test" method="post">
    <input type="text" name="username">
    <input type="submit" value="提交">
</form>
</body>
</html>

2.编写pom.xml文件

<?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>3.2.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>demo</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>

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

        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.4.2</version>
        </dependency>
        
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.76</version>
        </dependency>

        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>

<!--        <dependency>-->
<!--            <groupId>mysql</groupId>-->
<!--            <artifactId>mysql-connector-java</artifactId>-->
<!--            <scope>runtime</scope>-->
<!--        </dependency>-->

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.23</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.4.5</version>
            </plugin>
        </plugins>
    </build>

</project>

3.SpringBoot项目启动类

@Slf4j 是Lombok 提供的注解之一。简化日志记录代码的编写
举例 log.info(“项目启动”);

exclude = {DataSourceAutoConfiguration.class}，用 @SpringBootApplication 的 exclude 属性来排除 DataSourceAutoConfiguration 类，
不然会报错Failed to configure a DataSource: ‘url‘ attribute is not specified and no embedded，是因为我们没用到数据库

package com.example;

import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.web.servlet.ServletComponentScan;

@Slf4j
@SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})
@ServletComponentScan
public class DemoApplication {
    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
        log.info("项目启动");
    }

}

4.在application.yml中写服务端口

server:
  port: 8080

5.创建controller包，在此包下写MyController控制类

package com.example.controller;

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

@Controller
public class MyController {
    @PostMapping("/test")
    @ResponseBody//将MyController控制类，处理的数据返回给html页面
    public String test(String username){
        System.out.println("username:"+username);
        return "收到数据";
    }
}