一 点睛
RESTful API的重磅好伙伴Swagger2,它可以轻松的整合到Spring Boot中,并与Spring MVC程序配合组织出强大RESTful API文档。它既可以减少我们创建文档的工作量,同时说明内容又整合入实现代码中,让维护文档和修改代码整合为一体,可以让我们在修改代码逻辑的同时方便的修改文档说明。另外Swagger2也提供了强大的页面测试功能来调试每个RESTful API。
二 实战
1 添加Swagger2依赖
<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.2.2</version> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> <version>2.2.2</version> </dependency> </dependencies>
2 创建配置类Swagger2
/* 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)。 */ package com.didispace; 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.spi.DocumentationType; import springfox.documentation.spring.web.plugins.Docket; import springfox.documentation.swagger2.annotations.EnableSwagger2; @Configuration @EnableSwagger2 public class Swagger2 { @Bean public Docket createRestApi() { return new Docket(DocumentationType.SWAGGER_2) .apiInfo(apiInfo()) .select() .apis(RequestHandlerSelectors.basePackage("com.didispace.web")) .paths(PathSelectors.any()) .build(); } private ApiInfo apiInfo() { return new ApiInfoBuilder() .title("Spring Boot中使用Swagger2构建RESTful APIs") .description("更多Spring Boot相关文章请关注:http://blog.didispace.com/") .termsOfServiceUrl("http://blog.didispace.com/") .contact("程序猿DD") .version("1.0") .build(); } }
3 添加控制器UserController
/* 通过@ApiOperation注解来给API增加说明、通过@ApiImplicitParams、@ApiImplicitParam注解来给参数增加说明。 */ package com.didispace.web; import com.didispace.domain.User; import java.util.*; import io.swagger.annotations.*; import org.springframework.web.bind.annotation.*; @RestController @RequestMapping(value="/users") // 通过这里配置使下面的映射都在/users下,可去除 public class UserController { static Map<Long, User> users = Collections.synchronizedMap(new HashMap<Long, User>()); @ApiOperation(value="获取用户列表", notes="") @RequestMapping(value={""}, method=RequestMethod.GET) public List<User> getUserList() { List<User> r = new ArrayList<User>(users.values()); return r; } @ApiOperation(value="创建用户", notes="根据User对象创建用户") @ApiImplicitParam(name = "user", value = "用户详细实体user", required = true, dataType = "User") @RequestMapping(value="", method=RequestMethod.POST) public String postUser(@RequestBody User user) { users.put(user.getId(), user); return "success"; } @ApiOperation(value="获取用户详细信息", notes="根据url的id来获取用户详细信息") @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long", paramType = "path") @RequestMapping(value="/{id}", method=RequestMethod.GET) public User getUser(@PathVariable Long id) { return users.get(id); } @ApiOperation(value="更新用户详细信息", notes="根据url的id来指定更新对象,并根据传过来的user信息来更新用户详细信息") @ApiImplicitParams({ @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long", paramType = "path"), @ApiImplicitParam(name = "user", value = "用户详细实体user", required = true, dataType = "User") }) @RequestMapping(value="/{id}", method=RequestMethod.PUT) public String putUser(@PathVariable Long id, @RequestBody User user) { User u = users.get(id); u.setName(user.getName()); u.setAge(user.getAge()); users.put(id, u); return "success"; } @ApiOperation(value="删除用户", notes="根据url的id来指定删除对象") @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long", paramType = "path") @RequestMapping(value="/{id}", method=RequestMethod.DELETE) public String deleteUser(@PathVariable Long id) { users.remove(id); return "success"; } }
4 添加实体类
package com.didispace.domain; public class User { private Long id; private String name; private Integer age; public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } }
5 添加启动类
package com.didispace; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); } }
三 测试
1 浏览器输入http://localhost:8080/swagger-ui.html
2 调试功能
四 参考