1.什么是Swagger?
OpenAPI规范(OpenAPI Specification 简称OAS)是Linux基金会的一个项目,试图通过定义一种用来描述API格式或API定义的语言,来规范RESTful服务开发过程,目前版本是V3.0,并且已经发布并开源在github上。
Swagger是符合OpenAPI规范的接口开发工具,支持从设计和文档到测试和部署的整个API生命周 期的开发。 (https://swagger.io/)
2.Swagger常用注解
在Java类中添加Swagger的注解即可生成Swagger接口,常用Swagger注解如下:
@Api:修饰整个类,描述Controller的作用
@ApiOperation:描述一个类的一个方法,或者说一个接口
@ApiParam:单个参数描述
@ApiModel:用对象来接收参数
@ApiModelProperty:用对象接收参数时,描述对象的一个字段
@ApiResponse:HTTP响应其中1个描述
@ApiResponses:HTTP响应整体描述
@ApiIgnore:使用该注解忽略这个API
@ApiError :发生错误返回的信息
@ApiImplicitParam:一个请求参数
@ApiImplicitParams:多个请求参数
3.Swagger生成接口文档的工作原理
1、系统启动,扫描到api工程中的Swagger2Confifiguration类
2、在此类中指定了包路径com.xuecheng,找到在此包下及子包下标记有@RestController注解的controller类
3、根据controller类中的Swagger注解生成接口文档。
4.配置完整依赖
<?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>1.5.21.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.chen</groupId>
<artifactId>springsecuritytest</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springsecuritytest</name>
<description>Demo project for Spring Boot</description>
<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-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.4</version>
</dependency>
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-aop</artifactId>
</dependency>
<!--集成swagger自动生成接口文档-->
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
5.编写Swagger配置类
package com.chen.config;
import io.swagger.annotations.ApiOperation;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.service.ApiKey;
import springfox.documentation.service.Contact;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
import java.util.List;
import static com.google.common.collect.Lists.newArrayList;
@Configuration
@EnableSwagger2
public class SwaggerConfig extends WebMvcConfigurerAdapter {
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("swagger-ui.html")
.addResourceLocations("classpath:/META-INF/resources/");
registry.addResourceHandler("/webjars/**")
.addResourceLocations("classpath:/META-INF/resources/webjars/");
}
@Bean
public Docket createRestApi() {
return new Docket(DocumentationType.SWAGGER_2)
.apiInfo(apiInfo())
.select()
//加了ApiOperation注解的类,才生成接口文档
.apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))
//包下的类,才生成接口文档
//.apis(RequestHandlerSelectors.basePackage("com.chen.controller"))
.paths(PathSelectors.any())
.build()
.securitySchemes(security());
}
private ApiInfo apiInfo() {
return new ApiInfoBuilder()
.title("文档标题") //文档标题
.description("") //接口文档描述
.termsOfServiceUrl("https://www.baidu.com") //服务器
.version("1.0.0") //版本
.contact(new Contact("柠檬不酸", "", "[email protected]"))//作者信息
.build();
}
private List<ApiKey> security() {
return newArrayList(
new ApiKey("token", "token", "header")
);
}
}
6.编写SpringSecurity配置类
package com.chen.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
@Configuration
public class BrowerSecurityConfig extends WebSecurityConfigurerAdapter {
@Override
protected void configure(HttpSecurity http) throws Exception {
http.formLogin() // 定义当需要用户登录时候,转到的登录页面。
.and()
.authorizeRequests() // 定义哪些URL需要被保护、哪些不需要被保护
.anyRequest() // 任何请求,登录后可以访问
.authenticated();
http.authorizeRequests()
.antMatchers("/v2/api-docs",//swagger api json
"/swagger-resources/configuration/ui",//用来获取支持的动作
"/swagger-resources",//用来获取api-docs的URI
"/swagger-resources/configuration/security",//安全选项
"/swagger-ui.html",
"/webjars/**").permitAll();
}
}
7.编写Controller进行测试
package com.chen.controller;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@Api(value = "测试用的controller")
public class HelloController {
@ApiOperation(value = "接口名称", notes = "接口描述")
@GetMapping("/hello")
public String hello(String name){
return "hello";
}
}
8.查看显示效果
在浏览器输入 http://localhost/security/swagger-ui.html#/
使用swagger既可以让后端开发人员进行接口的调试,又给前端开发人员定义了一个开发文档,对后端人员来说是一个好东西。