SpringBoot 的配置和第一次测试

Spring Boot快速搭建与RESTful API实践

最新推荐文章于 2024-09-15 19:03:07 发布

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本文详细介绍了如何使用Spring Boot快速搭建一个Web应用，并通过实例展示了RESTful API的创建过程，包括配置Maven依赖、创建实体类、控制器及测试。

配置

导入架包

<?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>

    <groupId>com.fdk</groupId>
    <artifactId>demo111301</artifactId>
    <version>1.0-SNAPSHOT</version>


    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <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>
        </dependency>
    </dependencies>


</project>

resources目录创建appllication.properties文件

server.port=8080

创建文件ApplicationStart.java(名字随意)

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

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

}

测试

创建Person.java


public class Person {
    private String name;
    private int age;
    private Float height;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public Float getHeight() {
        return height;
    }

    public void setHeight(Float height) {
        this.height = height;
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", height=" + height +
                '}';
    }
}

在ApplicationStart.java所在目录的子目录创建
UserController.java


import java.util.ArrayList;
import java.util.List;

@RestController  //restful的控制器
@RequestMapping("/user")
public class UserController {

   //输出数据到前端
    @RequestMapping("/hello")
    public String hello(){
        System.out.println("你好丑,还责怪");
        return "长得丑,想的美";
    }

	//传输对象类型到前端,json
    @RequestMapping("/person")
    public Person showperson(){
        Person p=new Person();
        p.setName("fdk");
        p.setHeight(1.75f);
        p.setAge(23);
        return p;
    }

	//传输集合到前端,json
    @RequestMapping("/persons")
    public List<Person> showpersons( String name){
        System.out.println(name +"社会我赵哥,人怂话还几把多");
        Person p1=new Person();
        Person p2=new Person();
        Person p3=new Person();
        p1.setName("fdk");
        p1.setHeight(1.75f);
        p1.setAge(23);
        p2.setName("fdk");
        p2.setHeight(1.75f);
        p2.setAge(23);
        p3.setName("fdk");
        p3.setHeight(1.75f);
        p3.setAge(23);
        List<Person> list=new ArrayList<>();
        list.add(p1);
        list.add(p2);
        list.add(p3);

        return list;
    }

	//接收前端传过来的对象数据类型,json

    @RequestMapping("/showperson")
    public void showperson(@RequestBody Person person){
        System.out.println(person);
    }

}

注:前端用json传递对象数据,@RequestBody注释必加
前端传的 json格式为

  {
		"name": "fdk",
		"age": 23,
		"height": 1.75
	}