项目实战接口开发SpringBoot

一.springboot官方demo开发

首先，引入maven的pom.xml依赖和父类

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.0.RELEASE</version>
</parent>

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

    </dependency>
</dependencies>

然后，编写javaclass类代码：

package hello;

import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.stereotype.*;
import org.springframework.web.bind.annotation.*;

@Controller
@EnableAutoConfiguration
public class SampleController {

    @RequestMapping("/")
    @ResponseBody
    String home(){
        return "Hello World!";
    }

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


最后，打开浏览器，输入：http://localhost:8080/，可现实Hello World！
说明：springboot默认端口为8080


二.需求携带参数的get请求两种开发方式
1.第一种实现方式  url:key=value&key=calue

@RequestMapping(value = "/get/with/param",method = RequestMethod.GET)
public Map<String,Integer> getList(@RequestParam Integer start,@RequestParam Integer end){
    Map<String,Integer> myList = new HashMap<>();
    myList.put("鞋",400);
    myList.put("干脆面",1);
    myList.put("衬衫",300);
    return myList;
}

2.第二种需要携带参数访问的get请求，url:ip:port/get/with/param/10/20

@RequestMapping(value = "/get/with/param/{start}/{end}")
public Map myGetList(@PathVariable Integer start,@PathVariable Integer end){
    Map<String,Integer> myList = new HashMap<>();
    myList.put("鞋",400);
    myList.put("干脆面",1);
    myList.put("衬衫",300);
    return myList;

}

三.SpringBoot集成SwaggerUI
1.配置pom.xml文件

<!--提取的swagger公共属性，因为版本号是一样的。其中标签<swagger.version>是自定义的，自己命名的-->
<properties>
    <swagger.version>2.6.1</swagger.version>
</properties>

<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger2</artifactId>
    <version>${swagger.version}</version>
</dependency>
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger-ui</artifactId>
    <version>${swagger.version}</version>
</dependency>
2.编写配置文件

package com.course.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@Configuration  //这个注解表示这是一个配置文件
@EnableSwagger2
public class SwaggerConfig {

    @Bean
    public Docket api(){
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .pathMapping("/")
                .select()
                .paths(PathSelectors.regex("/.*"))
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder().title("我的接口文档")
                .contact(new Contact("wangyang0718","","834716115@qq.com"))
                .description("这是我的swaggerui生成的接口文档")
                .version("1.0.0.0")
                .build();
    }
}
3.在引入的方法中添加如下相关注解
首先，类上面要加注解：

@Api(value = "/",description = "这是我全部的get方法")
然后，所以方法上面要加注解：

@ApiOperation(value = "通过这个方法可以获取到Cookies",httpMethod = "GET")

4.访问地址路径：http://localhost:8888/swagger-ui.html