SpringBoot集成Swagger步骤详解及遇到类型转换错误+400

在[ SpringBoot入门（五）数据库操作入门]文章的基础上继续的

1、Swagger在pom.xml文件的配置

<dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.6.1</version>
</dependency>
<dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
<version>2.6.1</version>

2、在启动application的相同目录下创建Swagger2

@Configuration
@EnableSwagger2
public class Swagger2

    @Bean
    public Docket createRestApi(){
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.example.demo"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo(){
        return new ApiInfoBuilder()
                .title("SpringBoot 中使用Swagger构建Restful APIs")
                .description("更多SpringBoot 请查看官网")
                .termsOfServiceUrl("https://swagger.io/")
                .version("1.0")
                .build();
    }

}

通过@Configuration注解，让Spring来加载该类配置。再通过@EnableSwagger2注解来启用Swagger2。

再通过createRestApi函数创建Docket的Bean之后，apiInfo()用来创建该Api的基本信息（这些基本信息会展现在文档页面中）。select()函数返回一个ApiSelectorBuilder实例用来控制哪些接口暴露给Swagger来展现，本例采用指定扫描的包路径来定义，Swagger会扫描该包下所有Controller定义的API，并产生文档内容（除了被@ApiIgnore指定的请求）。

3、创建Controller文件

相关注解比如下面的@Api@ApiOperation参考地址：

​​https://github.com/swagger-api/swagger-core/wiki/Annotations​​

@RestController
@Api(value = "demo演示", description = "主要提供演示测试相关的接口API")
@RequestMapping("/person") //wentiz ehzai wen问题这这
public class PersonController

    @Autowired
    private PersonRepository personRepository;
    private AtomicInteger atomicInteger = new AtomicInteger(0);

    //增
    @ApiOperation(value="创建用户" ,notes = "根据person对象创建用户")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "name",value = "用户名",required =true,dataType = "String",paramType = "form"),
            @ApiImplicitParam(name = "age",value = "用户年龄",required = true,dataType = "Integer",paramType = "form")

    })
    @RequestMapping(value = "",method = RequestMethod.POST)
    public Person postUser(@RequestParam(value = "name") String name,@RequestParam(value = "age") Integer age){
        Integer id=atomicInteger.incrementAndGet();
        Person p=new Person();
        p.setName(name);
        p.setAge(age);
        p.setId(id);
        return personRepository.save(p);
    }
    //删
    @ApiOperation(value = "删除用户",notes="根据id删除用户")
    @ApiImplicitParam(name = "id",value = "用户id",required = true,dataType = "Integer",paramType = "path")
    @RequestMapping(value = "/{id}",method = RequestMethod.DELETE)
    public String deletePerson(@PathVariable Integer id){
        personRepository.delete(id);
        return "success";
    }
    //改
    @ApiOperation(value = "更新用户信息",notes = "根据id")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "id",value = "用户id",required = true,dataType = "Integer",paramType = "path"),
            @ApiImplicitParam(name = "person" ,value="用户信息",required = true,dataType = "Person")
    })
    @RequestMapping(value = "/{id}",method=RequestMethod.PUT)
    public String updatePerson(@PathVariable Integer id,@RequestBody Person person){
        Person p=new Person();
        person.setId(id);
        person.setName(person.getName());
        person.setAge(person.getAge());
        personRepository.save(p);
        return "success";
    }
    //查
    @ApiOperation(value="获取用户列表",notes = "获取全部用户")
    @RequestMapping(value = {""},method = RequestMethod.GET)
    public List<Person> getPersons(){
        return personRepository.findAll();
    }

    @ApiOperation(value = "获取用户信息",notes="根据id来获取用户信息")
    @ApiImplicitParam(name = "id",value = "用户ID",required = true,dataType = "Integer",paramType = "path")
    @RequestMapping(value = "/{id}",method = RequestMethod.GET)
    public Person getPerson(@PathVariable Integer id){
        return

浏览器地址：​​http://localhost:8082/swagger-ui.html​​

注意：这里的PersonController 必须有@RequestMapping(“/person”)注解否则会出现如下错误：

Failed to convert value of type ‘java.lang.String’ to required type ‘java.lang.Integer’; nested exception is java.lang.NumberFormatException: For input string: “swagger-ui”

(ps:这里好坑，网上很多例子也都没有这个路径，找了半天，最后还是找了大神帮忙给解决的)

4、其他的类
PersonRepository

public interface PersonRepository extends JpaRepository<Person,Integer> {

Person这里没有给出setget方法，通过使用lombok插件生成，插件只需要在pom.xml文件中进行配置一下就可以了。

<dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.12</version>
        </dependency>

Person.java

import lombok.Data;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
@Data//lombok
public class Person
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;
    private String name;
    private