swagger2和knife4j的詳細(xì)使用教程(入門級(jí))

更新時(shí)間：2022年09月27日 09:40:44 作者：小鐘要學(xué)習(xí)?。。?

最近項(xiàng)目中用到了Swagger2和knife4j作為接口文檔,所以下面這篇文章主要給大家介紹了關(guān)于swagger2和knife4j的詳細(xì)使用教程,文中通過(guò)實(shí)例代碼介紹的非常詳細(xì),需要的朋友可以參考下

1、swagger介紹

相信無(wú)論是前端還是后端開發(fā)，都或多或少地被接口文檔折磨過(guò)。前端經(jīng)常抱怨后端給的接口文檔與實(shí)際情況不一致。后端又覺得編寫及維護(hù)接口文檔會(huì)耗費(fèi)不少精力，經(jīng)常來(lái)不及更新。其實(shí)無(wú)論是前端調(diào)用后端，還是后端調(diào)用后端，都期望有一個(gè)好的接口文檔。但是這個(gè)接口文檔對(duì)于程序員來(lái)說(shuō)，就跟注釋一樣，經(jīng)常會(huì)抱怨別人寫的代碼沒有寫注釋，然而自己寫起代碼起來(lái)，最討厭的，也是寫注釋。所以僅僅只通過(guò)強(qiáng)制來(lái)規(guī)范大家是不夠的，隨著時(shí)間推移，版本迭代，接口文檔往往很容易就跟不上代碼了。

使用Swagger你只需要按照它的規(guī)范去定義接口及接口相關(guān)的信息。再通過(guò)Swagger衍生出來(lái)的一系列項(xiàng)目和工具，就可以做到生成各種格式的接口文檔，生成多種語(yǔ)言的客戶端和服務(wù)端的代碼，以及在線接口調(diào)試頁(yè)面等等。這樣，如果按照新的開發(fā)模式，在開發(fā)新版本或者迭代版本的時(shí)候，只需要更新Swagger描述文件，就可以自動(dòng)生成接口文檔和客戶端服務(wù)端代碼，做到調(diào)用端代碼、服務(wù)端代碼以及接口文檔的一致性。

為了簡(jiǎn)化swagger的使用，Spring框架對(duì)swagger進(jìn)行了整合，建立了Spring-swagger項(xiàng)目，后面改成了現(xiàn)在的Springfox。通過(guò)在項(xiàng)目中引入Springfox，可以掃描相關(guān)的代碼，生成描述文件，進(jìn)而生成與代碼一致的接口文檔和客戶端代碼。

Springfox對(duì)應(yīng)的maven坐標(biāo)如下：

注意：swagger與springBoot的版本是有兼用性的，需要對(duì)應(yīng)的版本號(hào)

<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger-ui</artifactId>
    <version>2.9.2</version>
</dependency>
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-swagger2</artifactId>
    <version>2.9.2</version>
</dependency>

2、swagger常用注解

注解	說(shuō)明
@Api	用在請(qǐng)求的類上，例如Controller，表示對(duì)類的說(shuō)明
@ApiModel	用在類上，通常是實(shí)體類，表示一個(gè)返回響應(yīng)數(shù)據(jù)的信息
@ApiModelProperty	用在屬性上，描述響應(yīng)類的屬性
@ApiOperation	用在請(qǐng)求的方法上，說(shuō)明方法的用途、作用
@ApiImplicitParams	用在請(qǐng)求的方法上，表示一組參數(shù)說(shuō)明
@ApiImplicitParam	用在@ApiImplicitParams注解中，指定一個(gè)請(qǐng)求參數(shù)的各個(gè)方面

3、 swagger入門案例

3.1、第一步：創(chuàng)建maven工程swagger_demo并配置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 http://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>2.2.2.RELEASE</version>
        <relativePath/>
    </parent>
    <groupId>org.example</groupId>
    <artifactId>swagger_demo</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

</project>

3.2、創(chuàng)建application.yml文件

server:
  port: 9000

3.3、第三步：創(chuàng)建實(shí)體類User和Menu

package com.zcl.entity;

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;

/**
 * 項(xiàng)目名稱：swagger_demo
 * 描述：用戶實(shí)體類
 *
 * @author zhong
 * @date 2022-08-29 6:50
 */
@Data
@ApiModel(value = "用戶實(shí)體",description = "用戶響應(yīng)實(shí)體")
public class User {
    @ApiModelProperty(value = "主鍵")
    private int id;
    @ApiModelProperty(value = "姓名")
    private String name;
    @ApiModelProperty(value = "年齡")
    private int age;
    @ApiModelProperty(value = "地址")
    private String address;
}

package com.zcl.entity;

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;

/**
 * 項(xiàng)目名稱：swagger_demo
 * 描述：菜單實(shí)體類
 *
 * @author zhong
 * @date 2022-08-29 6:49
 */
@Data
@ApiModel(value = "菜單實(shí)體",discriminator = "菜單實(shí)體描述")
public class Menu {
    @ApiModelProperty(value = "主鍵")
    private int id;
    @ApiModelProperty(value = "菜單名稱")
    private String name;
}

3.4、第四步：創(chuàng)建UserController和MenuController

package com.zcl.controller.user;

import com.zcl.entity.User;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.springframework.web.bind.annotation.*;

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

/**
 * 項(xiàng)目名稱：swagger_demo
 * 描述：用戶控制器
 *
 * @author zhong
 * @date 2022-08-29 6:55
 */
@Api(value = "用戶控制器")
@RestController
@RequestMapping("/user")
public class UserController {
    @GetMapping("/getUsers")
    @ApiOperation(value = "查詢所有用戶", notes = "查詢所有用戶信息")
    public List<User> getAllUsers(){
        User user = new User();
        user.setId(100);
        user.setName("itcast");
        user.setAge(20);
        user.setAddress("bj");
        List<User> list = new ArrayList<>();
        list.add(user);
        return list;
    }

    @PostMapping("/save")
    @ApiOperation(value = "新增用戶", notes = "新增用戶信息")
    public String save(@RequestBody User user){
        return "OK";
    }

    @PutMapping("/update")
    @ApiOperation(value = "修改用戶", notes = "修改用戶信息")
    public String update(@RequestBody User user){
        return "OK";
    }

    @DeleteMapping("/delete")
    @ApiOperation(value = "刪除用戶", notes = "刪除用戶信息")
    public String delete(int id){
        return "OK";
    }

    @ApiImplicitParams({
            @ApiImplicitParam(name = "pageNum", value = "頁(yè)碼",
                    required = true, type = "Integer"),
            @ApiImplicitParam(name = "pageSize", value = "每頁(yè)條數(shù)",
                    required = true, type = "Integer"),
    })
    @ApiOperation(value = "分頁(yè)查詢用戶信息")
    @GetMapping(value = "page/{pageNum}/{pageSize}")
    public String findByPage(@PathVariable Integer pageNum,
                             @PathVariable Integer pageSize) {
        return "OK";
    }
}

package com.zcl.controller.menu;

import com.zcl.entity.Menu;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.springframework.web.bind.annotation.*;

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

/**
 * 項(xiàng)目名稱：swagger_demo
 * 描述：菜單控制器
 *
 * @author zhong
 * @date 2022-08-29 7:00
 */
@Api(tags = "菜單控制器")
@RestController
@RequestMapping("/menu")
public class MenuController {
    @GetMapping("/getMenus")
    @ApiOperation(value = "查詢所有菜單", notes = "查詢所有菜單信息")
    public List<Menu> getMenus(){
        Menu menu = new Menu();
        menu.setId(100);
        menu.setName("itcast");
        List<Menu> list = new ArrayList<>();
        list.add(menu);
        return list;
    }

    @PostMapping("/save")
    @ApiOperation(value = "新增菜單", notes = "新增菜單信息")
    public String save(@RequestBody Menu menu){
        return "OK";
    }

    @PutMapping("/update")
    @ApiOperation(value = "修改菜單", notes = "修改菜單信息")
    public String update(@RequestBody Menu menu){
        return "OK";
    }

    @DeleteMapping("/delete")
    @ApiOperation(value = "刪除菜單", notes = "刪除菜單信息")
    public String delete(int id){
        return "OK";
    }

    @ApiImplicitParams({
            @ApiImplicitParam(name = "pageNum", value = "頁(yè)碼",
                    required = true, type = "Integer"),
            @ApiImplicitParam(name = "pageSize", value = "每頁(yè)條數(shù)",
                    required = true, type = "Integer"),
    })
    @ApiOperation(value = "分頁(yè)查詢菜單信息")
    @GetMapping(value = "page/{pageNum}/{pageSize}")
    public String findByPage(@PathVariable Integer pageNum,
                             @PathVariable Integer pageSize) {
        return "OK";
    }
}

3.5、第五步：創(chuàng)建配置類SwaggerAutoConfiguration

package com.zcl.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.RequestHandlerSelectors;
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;

/**
 * 項(xiàng)目名稱：swagger_demo
 * 描述：swagger自動(dòng)配置類
 *
 * @author zhong
 * @date 2022-08-29 7:04
 */
@Configuration
@EnableSwagger2
public class SwaggerAutoConfiguration {
    @Bean
    public Docket createRestApi1() {
        Docket docket = new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo()).groupName("用戶接口組")
                .select()
                //為當(dāng)前包路徑
                .apis(RequestHandlerSelectors.basePackage("com.zcl.controller.user"))
                .build();
        return docket;
    }

    @Bean
    public Docket createRestApi2() {
        Docket docket = new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo()).groupName("菜單接口組")
                .select()
                //為當(dāng)前包路徑
                .apis(RequestHandlerSelectors.basePackage("com.zcl.controller.menu"))
                .build();
        return docket;
    }

    //構(gòu)建 api文檔的詳細(xì)信息
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                //頁(yè)面標(biāo)題
                .title("API接口文檔")
                //創(chuàng)建人
                .contact(new Contact("雕刻筆記", "http://xiaozhong01.top", ""))
                //版本號(hào)
                .version("1.0")
                //描述
                .description("API 描述")
                .build();
    }
}

注意：如果不需要進(jìn)行分組，可以將后面的createRestApi2()進(jìn)行刪除就剩余一個(gè)組了，并將.groupName("用戶接口組")分組描述去掉以及將掃描控制器包修改即可

3.6、第六步：創(chuàng)建啟動(dòng)類SwaggerApplication

package com.zcl;

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

/**
 * 項(xiàng)目名稱：swagger_demo
 * 描述：swagger項(xiàng)目啟動(dòng)類
 *
 * @author zhong
 * @date 2022-08-29 7:13
 */
@SpringBootApplication
public class SwaggerApplication {
    public static void main(String[] args) {
        SpringApplication.run(SwaggerApplication.class,args);
    }
}

3.7、項(xiàng)目啟動(dòng)

執(zhí)行啟動(dòng)類main方法啟動(dòng)項(xiàng)目，訪問(wèn)地址：http://localhost:9000/swagger-ui.html

4、knife4j介紹

knife4j是為Java MVC框架集成Swagger生成Api文檔的增強(qiáng)解決方案,前身是swagger-bootstrap-ui,取名knife4j是希望它能像一把匕首一樣小巧,輕量,并且功能強(qiáng)悍!其底層是對(duì)Springfox的封裝，使用方式也和Springfox一致，只是對(duì)接口文檔UI進(jìn)行了優(yōu)化。

核心功能：

文檔說(shuō)明：根據(jù)Swagger的規(guī)范說(shuō)明，詳細(xì)列出接口文檔的說(shuō)明，包括接口地址、類型、請(qǐng)求示例、請(qǐng)求參數(shù)、響應(yīng)示例、響應(yīng)參數(shù)、響應(yīng)碼等信息，對(duì)該接口的使用情況一目了然。
在線調(diào)試：提供在線接口聯(lián)調(diào)的強(qiáng)大功能，自動(dòng)解析當(dāng)前接口參數(shù),同時(shí)包含表單驗(yàn)證，調(diào)用參數(shù)可返回接口響應(yīng)內(nèi)容、headers、響應(yīng)時(shí)間、響應(yīng)狀態(tài)碼等信息，幫助開發(fā)者在線調(diào)試。

5、knife4j入門案例

第一步：創(chuàng)建maven工程knife4j_demo并配置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 http://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>2.2.2.RELEASE</version>
        <relativePath/>
    </parent>
    <groupId>org.example</groupId>
    <artifactId>knife4j</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-spring-boot-starter</artifactId>
            <version>2.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>

</project>

第二步：創(chuàng)建實(shí)體類User和Menu

package com.zcl.entity;

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;

/**
 * 項(xiàng)目名稱：swagger_demo
 * 描述：菜單實(shí)體類
 *
 * @author zhong
 * @date 2022-08-29 6:49
 */
@Data
@ApiModel(value = "菜單實(shí)體",discriminator = "菜單實(shí)體描述")
public class Menu {
    @ApiModelProperty(value = "主鍵")
    private int id;
    @ApiModelProperty(value = "菜單名稱")
    private String name;
}

package com.zcl.entity;

import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;

/**
 * 項(xiàng)目名稱：swagger_demo
 * 描述：用戶實(shí)體類
 *
 * @author zhong
 * @date 2022-08-29 6:50
 */
@Data
@ApiModel(value = "用戶實(shí)體",description = "用戶響應(yīng)實(shí)體")
public class User {
    @ApiModelProperty(value = "主鍵")
    private int id;
    @ApiModelProperty(value = "姓名")
    private String name;
    @ApiModelProperty(value = "年齡")
    private int age;
    @ApiModelProperty(value = "地址")
    private String address;
}

第三步：創(chuàng)建UserController和MenuController

控制器與入門的swagger2是一樣的，直接復(fù)制下來(lái)

第四步：創(chuàng)建接口文檔配置屬性類SwaggerProperties

由于上一個(gè)swagger_demo的接口文檔配置文件是寫死在項(xiàng)目代碼中的，不利于后面的開發(fā)與維護(hù)，使用knife4j時(shí)并將相關(guān)的屬性配置以yml全局的方式靈活的進(jìn)行配置，方便進(jìn)行修改

package com.zcl.config;

import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

/**
 * 項(xiàng)目名稱：knife4j
 * 描述：配置屬性類，用于封裝yml配置文件中關(guān)于接口相關(guān)的配置文件
 *
 * @author zhong
 * @date 2022-08-29 7:58
 */
@Data
@ConfigurationProperties(prefix = "knife.swagger")
public class SwaggerProperties {
    /**標(biāo)題*/
    private String title = "在線文檔";
    /**自定義組名*/
    private String group = "";
    /**描述*/
    private String description = "在線文檔";
    /**版本*/
    private String version = "1.0";
    /**聯(lián)系人*/
    private Contact contact = new Contact();
    /**swagger會(huì)解析的包路徑*/
    private String basePackage = "com.zcl";
    /**swagger會(huì)解析的url規(guī)則*/
    private List<String> basePath = new ArrayList<>();
    /**在basePath基礎(chǔ)上需要排除的url規(guī)則*/
    private List<String> excludePath = new ArrayList<>();
    /**分組文檔*/
    private Map<String, DocketInfo> docket = new LinkedHashMap<>();
    public String getGroup() {
        if (group == null || "".equals(group)) {
            return title;
        }
        return group;
    }
    @Data
    public static class DocketInfo {
        /**標(biāo)題*/
        private String title = "在線文檔";
        /**自定義組名*/
        private String group = "";
        /**描述*/
        private String description = "在線文檔";
        /**版本*/
        private String version = "1.0";
        /**聯(lián)系人*/
        private Contact contact = new Contact();
        /**swagger會(huì)解析的包路徑*/
        private String basePackage = "com.zcl";
        /**swagger會(huì)解析的url規(guī)則*/
        private List<String> basePath = new ArrayList<>();
        /**在basePath基礎(chǔ)上需要排除的url規(guī)則*/
        private List<String> excludePath = new ArrayList<>();
        /**分組文檔*/
        private Map<String, DocketInfo> docket = new LinkedHashMap<>();
        public String getGroup() {
            if (group == null || "".equals(group)) {
                return title;
            }
            return group;
        }
    }
    @Data
    public static class Contact {
        /**聯(lián)系人*/
        private String name = "pinda";
        /**聯(lián)系人url*/
        private String url = "";
        /**聯(lián)系人email*/
        private String email = "";
    }
}

第五步：創(chuàng)建application.yml文件

該配置文件的屬性是對(duì)應(yīng)上面的配置文件屬性的如果不對(duì)上就不會(huì)被讀取到
下面重點(diǎn)的是對(duì)【docket】進(jìn)行map分組的屬性配置
private Map<String, DocketInfo> docket = new LinkedHashMap<>();

不進(jìn)行分組的配置

server:
  port: 7788
knife:
  swagger:
    enabled: true #是否啟用swagger的開關(guān)
    title: knife4j測(cè)試文檔
    description: knife4j測(cè)試文檔描述
    version: v1.0.0
    basePackage: com.zcl.controller

進(jìn)行分組的配置

server:
  port: 7788
knife:
  swagger:
    enabled: true #是否啟用swagger的開關(guān)
    title: knife4j測(cè)試文檔
    description: knife4j測(cè)試文檔描述
    version: v1.0.0
    docket: # 進(jìn)行分組
      user: # key
        # value
        title: 用戶模塊
        base-package: com.zcl.controller.user
      menu:
        title: 菜單模塊
        base-package: com.zcl.controller.menu

注意：上面配置文件中的enabled屬性是對(duì)應(yīng)著下面配置類中【@ConditionalOnProperty】通過(guò)注解判斷是否符合條件才讓配置類生效

第六步：創(chuàng)建配置類SwaggerAutoConfiguration

該配置類需要使到上面創(chuàng)建的SwaggerProperties生效以及需要啟用swagger注解

package com.zcl.config;

import com.google.common.base.Predicate;
import com.google.common.base.Predicates;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
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.builders.RequestHandlerSelectors;
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;

import javax.annotation.Resource;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * 項(xiàng)目名稱：knife4j
 * 描述：配置類
 *
 * @author zhong
 * @date 2022-08-29 8:22
 */
@Configuration
@EnableConfigurationProperties(SwaggerProperties.class)
@EnableSwagger2
@ConditionalOnProperty(name = "knife.swagger.enabled", havingValue = "true",
        matchIfMissing = true)
public class SwaggerAutoConfiguration implements BeanFactoryAware {
    private BeanFactory beanFactory;

    /**
     * 通過(guò)類型注入去查找beanFactory
     * @param beanFactory
     * @throws BeansException
     */
    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        this.beanFactory = beanFactory;
    }

    /**
     * 注入自動(dòng)配置屬性類
     */
    @Resource
    private SwaggerProperties swaggerProperties;

    /**
     * 遍歷swaggerProperties屬性配置的內(nèi)容，轉(zhuǎn)換成List集合【方便判斷有沒有進(jìn)行分組，沒有分組就一個(gè)list，分組就有多個(gè)】
     * 使用@ConditionalOnProperty條件注入，bean工程有就不創(chuàng)建
     * @return
     */
    @Bean
    @ConditionalOnMissingBean
    public List<Docket> createRestApi() {
        // 強(qiáng)轉(zhuǎn)beanFactory為可配置的bean工廠
        ConfigurableBeanFactory configurableBeanFactory =
                (ConfigurableBeanFactory) beanFactory;
        // 創(chuàng)建返回的list集合
        List<Docket> docketList = new ArrayList<>();
        // 獲取到分組的對(duì)象如果為空就是不分組
        if(swaggerProperties.getDocket().isEmpty()){
            Docket docket = createDocket(swaggerProperties);
            docketList.add(docket);
        }else{
            // 存在分組對(duì)象
            // 獲取到key【user\menu】
            Set<String> keySet = swaggerProperties.getDocket().keySet();
            // 遍歷key獲取到對(duì)應(yīng)的value
            for (String key : keySet) {
                // 獲取到info
                SwaggerProperties.DocketInfo docketInfo = swaggerProperties.getDocket().get(key);
                ApiInfo apiInfo = new ApiInfoBuilder()
                        //頁(yè)面標(biāo)題
                        .title(docketInfo.getTitle())
                        //創(chuàng)建人
                        .contact(new Contact(docketInfo.getContact().getName(),
                                docketInfo.getContact().getUrl(),
                                docketInfo.getContact().getEmail()))
                        //版本號(hào)
                        .version(docketInfo.getVersion())
                        //描述
                        .description(docketInfo.getDescription())
                        .build();
                // base-path處理
                // 當(dāng)沒有配置任何path的時(shí)候，解析/**
                if (docketInfo.getBasePath().isEmpty()) {
                    docketInfo.getBasePath().add("/**");
                }
                List<Predicate<String>> basePath = new ArrayList<>();
                for (String path : docketInfo.getBasePath()) {
                    basePath.add(PathSelectors.ant(path));
                }

                // exclude-path處理
                List<Predicate<String>> excludePath = new ArrayList<>();
                for (String path : docketInfo.getExcludePath()) {
                    excludePath.add(PathSelectors.ant(path));
                }

                Docket docket = new Docket(DocumentationType.SWAGGER_2)
                        .apiInfo(apiInfo)
                        .groupName(docketInfo.getGroup())
                        .select()
                        //為當(dāng)前包路徑
                        .apis(RequestHandlerSelectors.basePackage(docketInfo.getBasePackage()))
                        .paths(Predicates.and(Predicates.not(Predicates.or(excludePath)),Predicates.or(basePath)))
                        .build();
                configurableBeanFactory.registerSingleton(key, docket);
                docketList.add(docket);
            }
        }
        return docketList;
    }

    /**
     * 構(gòu)建 api文檔的詳細(xì)信息
     * @param swaggerProperties
     * @return
     */
    private ApiInfo apiInfo(SwaggerProperties swaggerProperties) {
        return new ApiInfoBuilder()
                //頁(yè)面標(biāo)題
                .title(swaggerProperties.getTitle())
                //創(chuàng)建人
                .contact(new Contact(swaggerProperties.getContact().getName(),
                        swaggerProperties.getContact().getUrl(),
                        swaggerProperties.getContact().getEmail()))
                //版本號(hào)
                .version(swaggerProperties.getVersion())
                //描述
                .description(swaggerProperties.getDescription())
                .build();
    }

    /**
     * 創(chuàng)建接口文檔對(duì)象
     * @param swaggerProperties 屬性配置
     * @return
     */
    private Docket createDocket(SwaggerProperties swaggerProperties) {
        //API 基礎(chǔ)信息
        ApiInfo apiInfo = apiInfo(swaggerProperties);

        // base-path處理
        // 當(dāng)沒有配置任何path的時(shí)候，解析/**
        if (swaggerProperties.getBasePath().isEmpty()) {
            swaggerProperties.getBasePath().add("/**");
        }
        List<Predicate<String>> basePath = new ArrayList<>();
        for (String path : swaggerProperties.getBasePath()) {
            basePath.add(PathSelectors.ant(path));
        }

        // exclude-path排除處理
        List<Predicate<String>> excludePath = new ArrayList<>();
        for (String path : swaggerProperties.getExcludePath()) {
            excludePath.add(PathSelectors.ant(path));
        }

        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo)
                .groupName(swaggerProperties.getGroup())
                .select()
                .apis(RequestHandlerSelectors.basePackage(swaggerProperties.getBasePackage()))
                .paths(Predicates.and(Predicates.not(Predicates.or(excludePath)),Predicates.or(basePath)))
                .build();
    }
}

第七步：創(chuàng)建啟動(dòng)類knife4jApplication

package com.zcl;

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

/**
 * 項(xiàng)目名稱：knife4j
 * 描述：knife4j項(xiàng)目啟動(dòng)類
 *
 * @author zhong
 * @date 2022-08-29 8:09
 */
@SpringBootApplication
public class knife4jApplication {
    public static void main(String[] args) {
        SpringApplication.run(knife4jApplication.class, args);
    }
}

執(zhí)行啟動(dòng)類main方法啟動(dòng)項(xiàng)目，訪問(wèn)地址：http://localhost:7788/doc.html