SpringBoot 2.2.5 整合Knife4j,实现扫描多个不同包的接口,并配置支持传Token进行验证以及安全认证机制

说明

knife4j是为Java MVC框架集成Swagger生成Api文档的增强解决方案,前身是swagger-bootstrap-ui,取名kni4j是希望它能像一把匕首一样小巧,轻量,并且功能强悍!。

功能

  1. 文档说明:根据Swagger的规范说明,详细列出接口文档的说明,包括接口地址、类型、请求示例、请求参数、响应示例、响应参数、响应码等信息,使用swagger-bootstrap-ui能根据该文档说明,对该接口的使用情况一目了然。
  2. 在线调试:提供在线接口联调的强大功能,自动解析当前接口参数,同时包含表单验证,调用参数可返回接口响应内容、headers、Curl请求命令实例、响应时间、响应状态码等信息,帮助开发者在线调试,而不必通过其他测试工具测试接口是否正确,简介、强大。

完整代码地址在结尾!!

第一步,在pom.xml加入依赖,如下



    com.github.xiaoymin
    knife4j-spring-boot-starter
    2.0.2

第二步,配置application.yml,避免端口冲突

server:
  port: 8081

第三步,创建类TestRequest,TestResponse,如下

TestRequest

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

/**
 * @Description:
 * @Author: luoyu
 * @Date: 2020/5/14 9:30 下午
 * @Version: 1.0.0
 */
@Data
public class TestRequest {

    @ApiModelProperty(required = true, value = "用户id", example = "123")
    private String id;

    @ApiModelProperty(required = true, value = "用户name", example = "百里玄刺")
    private String name;

    @ApiModelProperty(required = true, value = "用户age", example = "18")
    private int age;

    @ApiModelProperty(required = true, value = "用户sex", example = "男")
    private String sex;

}

TestResponse

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

/**
 * @Description:
 * @Author: luoyu
 * @Date: 2020/5/14 9:30 下午
 * @Version: 1.0.0
 */
@ApiModel("getTest响应实体")
@Data
public class TestResponse {

    @ApiModelProperty(required = true, value = "用户id", example = "123")
    private String id;
    
    @ApiModelProperty(required = true, value = "用户name", example = "百里玄刺")
    private String name;
    
    @ApiModelProperty(required = true, value = "用户age", example = "18")
    private int age;
    
    @ApiModelProperty(required = true, value = "用户sex", example = "男")
    private String sex;

}

第四步,创建类Test1Controller,Test2Controller,Test3Controller(在接口上添加对应注解,本人只添加基本的注解),并分别放于com.luoyu.knife4j.controller.test1,com.luoyu.knife4j.controller.test2,com.luoyu.knife4j.controller.test3包下(配置文件里面配置的扫描路径)。

Test1Controller

import com.luoyu.knife4j.entity.request.TestRequest;
import com.luoyu.knife4j.entity.response.TestResponse;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * 

* 前端控制器 *

* * @author luoyu * @since 2020-02-13 */ @RestController @RequestMapping("/test1") @Api(value = "/test1", tags = "Test1Controller接口") public class Test1Controller { /** * @author luoyu * @description 测试接口1 */ @ApiResponses({ @ApiResponse(code = 200, message = "成功!"), @ApiResponse(code = 500, message = "服务器内部错误,请联系管理人员!"), @ApiResponse(code=404,message="请求路径没有或页面跳转路径不对") }) @PostMapping(value = "/gettest1", produces = "application/json; charset=UTF-8") @ApiOperation(value = "test1接口名称", notes = "test1接口描述") public TestResponse getTest1(TestRequest request) throws Exception { TestResponse response = new TestResponse(); BeanUtils.copyProperties(request, response); return response; } /** * @author luoyu * @description 测试接口2 */ @ApiResponses({ @ApiResponse(code = 200, message = "成功!"), @ApiResponse(code = 500, message = "服务器内部错误,请联系管理人员!"), @ApiResponse(code=404,message="请求路径没有或页面跳转路径不对") }) @PostMapping(value = "/gettest2", produces = "application/json; charset=UTF-8") @ApiOperation(value = "test2接口名称", notes = "test2接口描述") public TestResponse getTest2(TestRequest request) throws Exception { TestResponse response = new TestResponse(); BeanUtils.copyProperties(request, response); return response; } }

Test2Controller

import com.luoyu.knife4j.entity.request.TestRequest;
import com.luoyu.knife4j.entity.response.TestResponse;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * 

* 前端控制器 *

* * @author luoyu * @since 2020-02-13 */ @RestController @RequestMapping("/test2") @Api(value = "/test2", tags = "Test2Controller接口") public class Test2Controller { /** * @author luoyu * @description 测试接口1 */ @ApiResponses({ @ApiResponse(code = 200, message = "成功!"), @ApiResponse(code = 500, message = "服务器内部错误,请联系管理人员!"), @ApiResponse(code=404,message="请求路径没有或页面跳转路径不对") }) @PostMapping(value = "/gettest1", produces = "application/json; charset=UTF-8") @ApiOperation(value = "test1接口名称", notes = "test1接口描述") public TestResponse getTest1(TestRequest request) throws Exception { TestResponse response = new TestResponse(); BeanUtils.copyProperties(request, response); return response; } }

Test3Controller

import com.luoyu.knife4j.entity.request.TestRequest;
import com.luoyu.knife4j.entity.response.TestResponse;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * 

* 前端控制器 *

* * @author luoyu * @since 2020-02-13 */ @RestController @RequestMapping("/test3") @Api(value = "/test3", tags = "Test3Controller接口") public class Test3Controller { /** * @author luoyu * @description 测试接口1 */ @ApiResponses({ @ApiResponse(code = 200, message = "成功!"), @ApiResponse(code = 500, message = "服务器内部错误,请联系管理人员!"), @ApiResponse(code=404,message="请求路径没有或页面跳转路径不对") }) @PostMapping(value = "/gettest1", produces = "application/json; charset=UTF-8") @ApiOperation(value = "test1接口名称", notes = "test1接口描述") public TestResponse getTest1(TestRequest request) throws Exception { TestResponse response = new TestResponse(); BeanUtils.copyProperties(request, response); return response; } }

第五步,创建Knife4jConfig配置文件,如下

import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j;
import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.collect.Lists;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.Profile;
import springfox.bean.validators.configuration.BeanValidatorPluginsConfiguration;
import springfox.documentation.RequestHandler;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.ParameterBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.schema.ModelRef;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.Parameter;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

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

/**
 * @version 1.0
 * @author luoyu
 * @date 2019-08-09
 * @description Knife4j配置
 */
@Configuration
@EnableSwagger2
@EnableKnife4j
@Import(BeanValidatorPluginsConfiguration.class)
public class Knife4jConfig {

    /**
     * 定义分隔符
     */
    private static final String SPLITOR = ";";

    /**
     * @author luoyu
     * @description 配置token,以及设置扫描包的路径
     * @return Docket
     */
    @Bean("createRestApi1")
    public Docket createRestApi1() {
        //设置header里面的token
        ParameterBuilder tokenPar = new ParameterBuilder();
        List pars = new ArrayList<>();
        tokenPar.name("token").description("token令牌").modelRef(new ModelRef("string")).parameterType("header").required(false).build();
        pars.add(tokenPar.build());

        return new Docket(DocumentationType.SWAGGER_2)
                .globalOperationParameters(pars)
                .apiInfo(apiInfo())
                .groupName("1.0.0 版本")
                .select()
                //此处添加需要扫描接口的包路径
                .apis(basePackage("com.luoyu.knife4j.controller.test1" + SPLITOR
                        + "com.luoyu.knife4j.controller.test2" + SPLITOR ))
                .paths(PathSelectors.any())
                .build();
    }

    /**
     * @author luoyu
     * @description 配置token,以及设置扫描包的路径
     * @return Docket
     */
    @Bean("createRestApi2")
    public Docket createRestApi2() {
        //设置header里面的token
        ParameterBuilder tokenPar = new ParameterBuilder();
        List pars = new ArrayList<>();
        tokenPar.name("token").description("token").modelRef(new ModelRef("string")).parameterType("header").required(false).build();
        pars.add(tokenPar.build());

        return new Docket(DocumentationType.SWAGGER_2)
                .globalOperationParameters(pars)
                .apiInfo(apiInfo())
                .groupName("2.0.0 版本")
                .select()
                //此处添加需要扫描接口的包路径
                .apis(basePackage("com.luoyu.knife4j.controller.test3" + SPLITOR ))
                .paths(PathSelectors.any())
                .build();
    }

    /**
     * @author luoyu
     * @description 配置Knife4j页面显示内容
     * @return Docket
     */
    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("Knife4j 接口文档")
                .description("Knife4j 接口文档")
                .version("1.0.0")
                .termsOfServiceUrl("http://localhost:8088/doc.html")
                .contact("luoyu")
                .build();
    }

    /**
     * @author luoyu
     * @description 重写basePackage方法,使能够实现多包访问
     * @param basePackage 所有包路径
     * @return Predicate
     */
    public static Predicate basePackage(final String basePackage) {
        return input -> declaringClass(input).map(handlerPackage(basePackage)::apply).orElse(true);
    }

    /**
     * @author luoyu
     * @description 重写basePackage方法,使能够实现多包访问
     * @param basePackage 所有包路径
     * @return Function, Boolean>
     */
    private static Function, Boolean> handlerPackage(final String basePackage)     {
        return input -> {
            // 循环判断匹配
            for (String strPackage : basePackage.split(SPLITOR)) {
                assert input != null;
                boolean isMatch = input.getPackage().getName().startsWith(strPackage);
                if (isMatch) {
                    return true;
                }
            }
            return false;
        };
    }

    /**
     * @author luoyu
     * @description 重写basePackage方法,使能够实现多包访问
     * @param input
     * @return Optional>
     */
    private static Optional> declaringClass(RequestHandler input) {
        return Optional.ofNullable(input.declaringClass());
    }

}

第六步,启动项目,访问:http://localhost:8089/doc.html,

  1. 端口号根据配置文件application.yml里面的端口号进行修改
  2. 需要输入安全认证账号密码,也是application.yml里面配置的

另外,此处提供一些常用注解。如下

@Api() 用于类;表示标识这个类是swagger的资源 
tags–表示说明 
value–也是说明,可以使用tags替代 

@ApiOperation() 用于方法;表示一个http请求的操作 
value用于方法描述 
notes用于提示内容 

@ApiParam() 用于方法,参数,字段说明;表示对参数的添加元数据(说明或是否必填等) 
name–参数名 
value–参数说明 
required–是否必填

@ApiModel()用于类 ;表示对类进行说明,用于参数用实体类接收 
value–表示对象名 

@ApiModelProperty()用于方法,字段; 表示对model属性的说明或者数据操作更改 
value–字段说明 
name–重写属性名字 
dataType–重写属性类型 
required–是否必填 
example–举例说明 
hidden–隐藏

@ApiImplicitParam() 用于方法 
表示单独的请求参数

@ApiImplicitParams() 用于方法,包含多个 @ApiImplicitParam 
name–参数ming 
value–参数说明 
dataType–数据类型 
paramType–参数类型 
example–举例说明

@ApiIgnore
作用于方法上,使用这个注解swagger将忽略这个接口

完整代码地址:https://github.com/Jinhx128/springboot-demo

注:此工程包含多个module,本文所用代码均在knife4j-demo模块下

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