SpringMVC、SpringFox和Swagger整合项目实例
目标
在做项目的时候,有时候需要提供其它平台(如业务平台)相关的HTTP接口,业务平台则通过开放的HTTP接口获取相关的内容,并完成自身业务~
提供对外开放HTTP API接口,比较常用的是采用Spring MVC来完成。
本文的目标是先搭建一个简单的Spring MVC应用,然后为Spring MVC整合SpringFox-Swagger以及SpringFox-Swagger-UI,最终,达到Spring MVC对外开放接口API文档化。
如下图所示:
搭建SpringMVC工程
新建Maven工程
Eclipse中,File --> New --> Maven Project,
点击“Next”按钮, 然后选择 “maven-archetype-webapp”,
继续点击“Next”按钮,然后指定
点击“Finish” 按钮结束~ 就这样,一个简单的Web工程就建好了~
但是,
默认是使用J2SE-1.5, 配置一下Build Path,使用本地机器上安装的JDK
(本文中使用的是JDK 1.7),工程默认字体是GBK,将其改成UTF-8
完成后,Maven工程的结构如下图所示:
引入Spring依赖包
在本示例中,因为简单,所以只要引入如下几个jar包就好了~
<dependencies> <!--引入Spring依赖包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.framework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.framework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.framework.version}</version> </dependency> </dependencies>
完整的pom.xml文件内容如下:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.xxx.tutorial</groupId> <artifactId>springfox-swagger-demo</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>springfox-swagger-demo Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <spring.framework.version>4.3.6.RELEASE</spring.framework.version> </properties> <dependencies> <!--引入Spring依赖包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${spring.framework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.framework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.framework.version}</version> </dependency> </dependencies> <build> <finalName>springfox-swagger-demo</finalName> </build> </project>
编写spring-mvc.xml文件
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <!-- 默认的注解映射的支持 ,它会自动注册DefaultAnnotationHandlerMapping 与AnnotationMethodHandlerAdapter --> <mvc:annotation-driven /> <!-- 设置使用注解的类所在的jar包 --> <context:component-scan base-package="com.htjf.controller" /> <!--这个是我的项目包结构--> </beans>
配置applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd"> <!-- 启用注解扫描,并定义组件查找规则 ,除了@controller,扫描所有的Bean --> <context:component-scan base-package="com.htjf"/> <!-- 启动SpringMVC的注解功能,完成请求和注解POJO的映射 --> <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" /> <!-- enable autowire 向容器自动注册 --> <context:annotation-config /> </beans>
配置web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <display-name>Archetype Created Web Application</display-name> <!-- 利用Spring提供的ContextLoaderListener监听器去监听ServletContext对象的创建,并初始化WebApplicationContext对象 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- Context Configuration locations for Spring XML files(默认查找/WEB-INF/applicationContext.xml) --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!-- 配置Spring MVC的前端控制器:DispatchcerServlet --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> <async-supported>true</async-supported> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--字符编码过滤器--> <filter> <filter-name>encoding</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>encoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
编写Controller并测试
配置好spring-mvc.xml、applicationContext.xml以及web.xml文件之后,咱们继续往下走~
因为,本文Spring MVC示例的作用主要用来暴露对外HTTP API接口,先写一个简单的ProductController,其包含一个按照id查询的方法。
Product.java和ProductController.java的内容如下:
Product.java
package com.xxx.tutorial.model; import java.io.Serializable; /** * * @author wangmengjun * */ public class Product implements Serializable { private static final long serialVersionUID = 1L; /**ID*/ private Long id; /**产品名称*/ private String name; /**产品型号*/ private String productClass; /**产品ID*/ private String productId; /** * @return the id */ public Long getId() { return id; } /** * @param id * the id to set */ public void setId(Long id) { this.id = id; } /** * @return the name */ public String getName() { return name; } /** * @param name * the name to set */ public void setName(String name) { this.name = name; } /** * @return the productClass */ public String getProductClass() { return productClass; } /** * @param productClass * the productClass to set */ public void setProductClass(String productClass) { this.productClass = productClass; } /** * @return the productId */ public String getProductId() { return productId; } /** * @param productId * the productId to set */ public void setProductId(String productId) { this.productId = productId; } /* * (non-Javadoc) * * @see java.lang.Object#toString() */ @Override public String toString() { return "Product [id=" + id + ", name=" + name + ", productClass=" + productClass + ", productId=" + productId + "]"; } }
ProductController.java
package com.xxx.tutorial.controller; import org.springframework.http.ResponseEntity; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; import com.xxx.tutorial.model.Product; @RestController @RequestMapping(value = { "/api/product/"}) public class ProductController { @RequestMapping(value = "/{id}", method = RequestMethod.GET) public ResponseEntity<Product> get(@PathVariable Long id) { Product product = new Product(); product.setName("七级滤芯净水器"); product.setId(1L); product.setProductClass("seven_filters"); product.setProductId("T12345"); return ResponseEntity.ok(product); } }
注:
鉴于是一个demo示例,所以没有写ProductService以及相关DAO, 直接在方法中返回固定的Product信息~
验证Spring MVC是否ok
完成Controller的代码,运行Spring MVC项目,然后,看一下Spring MVC是否运行ok,访问URL地址
http://localhost:8888/springfox-swagger-demo/api/product/1
- 出现错误
详细的错误信息如下:
五月 23, 2017 3:00:55 下午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [spring-mvc] in context with path [/springfox-swagger-demo] threw exception [Request processing failed; nested exception is java.lang.IllegalArgumentException: No converter found for return value of type: class com.xxx.tutorial.model.Product] with root cause
java.lang.IllegalArgumentException: No converter found for return value of type: class com.xxx.tutorial.model.Product
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:187)
at org.springframework.web.servlet.mvc.method.annotation.HttpEntityMethodProcessor.handleReturnValue(HttpEntityMethodProcessor.java:203)
at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:81)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:132)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:957)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:620)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
解决方法,添加jackson-databind依赖包即可~
<dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.6.6</version> </dependency>
重新启动,运行一下,成功返回信息~
为了看的更加清楚,可以使用postman来完成~, 如~
至此,一个简单的基于SpringMVC的Web项目已经创建,并能对外提供API接口~
接下来,我们要整合SpringFox和SwaggerUI到该SpringMVC项目中去,使其对外接口文档化
整合SpringFox-Swagger
SpringFox【SpringFox链接】已经可以代替Swagger-SpringMVC, 目前SpringFox同时支持Swagger 1.2 和 2.0.
在SpringMVC项目中整合SpringFox-Swagger只要如下几步即可~
- 添加SpringFox-Swagger依赖
- 添加SwaggerConfig
添加依赖
<dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.7.0</version> </dependency>
添加SwaggerConfig
package com.htjf.config; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.EnableWebMvc; import springfox.documentation.builders.ApiInfoBuilder; 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 @ComponentScan(basePackages= {"com.htjf.controller"}) @EnableWebMvc public class SwaggerConfig { @Bean public Docket api() { return new Docket(DocumentationType.SWAGGER_2) .select() .apis(RequestHandlerSelectors.any()) .build() .apiInfo(apiInfo()); } private ApiInfo apiInfo() { return new ApiInfoBuilder() .title("对外开放接口API 文档") //大标题 title .description("HTTP对外开放接口") //小标题 .version("1.0.0") //版本 .termsOfServiceUrl("http://xxx.xxx.com") //终端服务程序 .license("LICENSE") //链接显示文字 .licenseUrl("http://xxx.xxx.com") //网站链接 .build(); } }
整合SpringFox-Swagger-UI
在SpringMVC项目中整合SpringFox-Swagger-UI也只要如下两个步骤即可~
- 添加SpringFox-Swagger-UI依赖
- 添加配置
添加依赖
<dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> <version>2.7.0</version> </dependency>
添加配置
在添加配置之前,一起来看一下swagger-ui中使用的静态资源文件(如 swagger-ui.html )放在那里~
spingfox-swagger-ui-2.7.0.jar中的/META-INF/resources/下~ 如下图所示:
为了访问swagger-ui.html,我们配置对这些静态资源的访问~ 如:
package com.xxx.tutorial.config; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.EnableWebMvc; import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; @Configuration @EnableWebMvc public class WebAppConfig 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/"); } }
该配置代码的效果和如下代码等价~
<mvc:resources mapping="swagger-ui.html" location="classpath:/META-INF/resources/" /> <mvc:resources mapping="/webjars/**" location="classpath:/META-INF/resources/webjars/" />
在本文中,可以将其配置在spring-mvc.xml中,
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <!-- 默认的注解映射的支持 ,它会自动注册DefaultAnnotationHandlerMapping 与AnnotationMethodHandlerAdapter --> <mvc:annotation-driven /> <!-- 设置使用注解的类所在的jar包 --> <context:component-scan base-package="com.htjf.controller" /> <mvc:resources location="classpath:/META-INF/resources/" mapping="swagger-ui.html"/> <mvc:resources location="classpath:/META-INF/resources/webjars/" mapping="/webjars/**"/> </beans>
API接口说明代码添加并测试
经过上述几个步骤之后,之前写的ProductController的接口,就可以实现文档化了,如本文通过如下的访问地址访问:
http://localhost:8888/springfox-swagger-demo/swagger-ui.html
这个接口API雏形出来了,但是还缺少点东西,比如:接口方法的描述等都没有~
修改一下,ProductController.java内容,如:
package com.xxx.tutorial.controller; import org.springframework.http.ResponseEntity; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; import com.xxx.tutorial.model.Product; import io.swagger.annotations.Api; import io.swagger.annotations.ApiOperation; @RestController @RequestMapping(value = { "/api/product/" }) @Api(value = "/product", tags = "Product接口") public class ProductController { @RequestMapping(value = "/{id}", method = RequestMethod.GET) @ApiOperation(value = "根据id获取产品信息", notes = "根据id获取产品信息", httpMethod = "GET", response = Product.class) public ResponseEntity<Product> get(@PathVariable Long id) { Product product = new Product(); product.setName("七级滤芯净水器"); product.setId(1L); product.setProductClass("seven_filters"); product.setProductId("T12345"); return ResponseEntity.ok(product); } }
重新访问,接口已经出现多个我们指定的描述信息~
在参数id栏中输入1,然后点击“try it out”按钮~ 可以查看接口调用结果~
至此一个简单的示例就完成了~
稍微增加几个接口
修改ProductController
package com.xxx.tutorial.controller; import java.util.Arrays; import java.util.List; import org.springframework.http.ResponseEntity; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; import com.xxx.tutorial.model.Product; import io.swagger.annotations.Api; import io.swagger.annotations.ApiOperation; import io.swagger.annotations.ApiResponse; import io.swagger.annotations.ApiResponses; @RestController @RequestMapping(value = { "/api/product/" }) @Api(value = "/product", tags = "Product接口") public class ProductController { @RequestMapping(value = "/{id}", method = RequestMethod.GET) @ApiResponses(value= { @ApiResponse(code = 400,message="参数错误"), @ApiResponse(code = 401,message="要求用户的身份认证"), @ApiResponse(code = 403,message="拒绝执行此请求"), @ApiResponse(code = 404,message="系统资源未发现"), @ApiResponse(code = 500,message="系统错误"), @ApiResponse(code = 200,message="成功,其它为错误,返回格式:{code:0,data[{}]},data中的属性参照下方Model",response=Product.class)}) @ApiOperation(value = "根据id获取产品信息", notes = "根据id获取产品信息", httpMethod = "GET") public ResponseEntity<Product> get(@PathVariable Long id) { Product product = new Product(); product.setName("七级滤芯净水器"); product.setId(1L); product.setProductClass("seven_filters"); product.setProductId("T12345"); return ResponseEntity.ok(product); } @RequestMapping(method = RequestMethod.POST) @ApiOperation(value = "添加一个新的产品") @ApiResponses(value = { @ApiResponse(code = 201,message="已创建。成功请求并创建了新的资源"), @ApiResponse(code = 401,message="要求用户的身份认证"), @ApiResponse(code = 403,message="拒绝执行此请求"), @ApiResponse(code = 404,message="系统资源未发现"), @ApiResponse(code = 405, message = "参数错误"), @ApiResponse(code = 200,message="成功,其它为错误,返回格式:{code:0,data[{}]},data中的属性参照下方Model",response=String.class)}) public ResponseEntity<String> add(Product product) { return ResponseEntity.ok("SUCCESS"); } @RequestMapping(method = RequestMethod.PUT) @ApiOperation(value = "更新一个产品") @ApiResponses(value = { @ApiResponse(code = 200,message="成功,其它为错误,返回格式:{code:0,data[{}]},data中的属性参照下方Model",response=String.class), @ApiResponse(code = 201,message="已创建。成功请求并创建了新的资源"), @ApiResponse(code = 400, message = "参数错误"), @ApiResponse(code = 401,message="要求用户的身份认证"), @ApiResponse(code = 403,message="拒绝执行此请求"), @ApiResponse(code = 404,message="系统资源未发现")}) public ResponseEntity<String> update(Product product) { return ResponseEntity.ok("SUCCESS"); } @RequestMapping(method = RequestMethod.GET) @ApiOperation(value = "获取所有产品信息", notes = "获取所有产品信息", httpMethod = "GET", response = Product.class, responseContainer = "List") public ResponseEntity<List<Product>> getAllProducts() { Product product = new Product(); product.setName("七级滤芯净水器"); product.setId(1L); product.setProductClass("seven_filters"); product.setProductId("T12345"); return ResponseEntity.ok(Arrays.asList(product, product)); } } @RequestMapping(method=RequestMethod.DELETE) @ApiOperation(value="删除某个产品信息",notes="删除某个产品信息") /* @ApiImplicitParams(@ApiImplicitParam(name="carOwnerName",value="产品id",dataType="Long"))*/ @ApiResponses(value= { @ApiResponse(code = 204,message="无内容。服务器成功处理,但未返回内容!"), @ApiResponse(code = 400,message="参数错误"), @ApiResponse(code = 401,message="要求用户的身份认证"), @ApiResponse(code = 403,message="拒绝执行此请求"), @ApiResponse(code = 500,message="系统错误"), @ApiResponse(code = 200,message="成功,其它为错误,返回格式:{code:0,data[{}]},data中的属性参照下方Model",response=String.class)}) public ResponseEntity<String> delete(@PathVariable Long id){ if(carOwnerName==null) { return new ResponseEntity<String>(HttpStatus.NO_CONTENT); }else { return ResponseEntity.ok("SUCCESS"); } }
swagger-ui展示
由上图可以看出,不同的method(GET / PUT / POST等)都会以不同的颜色展示出来~
Swagger-ui的添加,可以帮助他人查看接口信息,并在页面上进行输入参数来调用接口~
Maven工程的目录如下:
本文只是一个简单的整合示例,大家只要操作一下就能出来结果。
接下来讲解Swagger 常用注解使用
--@Api()用于类;
表示这个类是一个swagger的资源。它有两个属性,分别是:
String value();---也是说明,可以使用tags替代
String[] tags();---是一个数组,表示说明,tags如果有多个值,会生成多个list;
例如:
@Api(value="用户controller",tags={"用户操作接口"}) @RestController public class UserController { }
ui效果图:
--@ApiOperation()用于方法;
表示一个http请求的操作 ,它有4个常用属性:
String value();--用于方法描述;
String notes();--用于提示内容
String[] tags();--可以重新分组(视情况而用)
String httpMethod(); --请求方法类型,例如:httpMethod=“GET”;
--@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) ,它有几个常用参数:
String name();--参数名
String value();--参数说明
boolean required();--是否必填
boolean allowEmptyValue();--是否允许有空值
例如:
@Api(value="用户controller",tags={"用户操作接口"}) @RestController public class UserController { @ApiOperation(value="获取用户信息",tags={"获取用户信息copy"},notes="注意问题点") @GetMapping("/getUserInfo") public User getUserInfo(@ApiParam(name="id",value="用户id",required=true) Long id,@ApiParam(name="username",value="用户名") String username) { // userService可忽略,是业务逻辑 User user = userService.getUserInfo(); return user; } }
ui效果图:
--@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
description–描述
都可省略
--@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
例如:
@ApiModel(value="user对象",description="用户对象user") public class User implements Serializable{ private static final long serialVersionUID = 1L; @ApiModelProperty(value="用户名",name="username",example="xingguo") private String username; @ApiModelProperty(value="状态",name="state",required=true) private Integer state; private String password; private String nickName; private Integer isDeleted; @ApiModelProperty(value="id数组",hidden=true) private String[] ids; private List<String> idList; //省略get/set }
@ApiOperation("更改用户信息") @PostMapping("/updateUserInfo") public int updateUserInfo(@RequestBody @ApiParam(name="用户对象",value="传入json格式",required=true) User user){ //注意,一定要添加@RequestBody注解 int num = userService.updateUserInfo(user); return num; }
ui效果图:
--@ApiIgnore()用于类或者方法上,可以不被swagger显示在页面上
比较简单, 这里不做举例
--@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
*****在controller层使用@RequestParam的时候,发现这个参数是必须要输入值的,但是我们有时候必须查询的时候允许参数为空,使用这个注解就不行了。但是使用@ApiImplicitParam这个注解可以解决这个问题。
例如:
@ApiOperation("查询测试") @GetMapping("select") //@ApiImplicitParam(name="name",value="用户名",dataType="String", paramType = "query") @ApiImplicitParams({ @ApiImplicitParam(name="name",value="用户名",dataType="string", paramType = "query",example="xingguo"), @ApiImplicitParam(name="id",value="用户id",dataType="long", paramType = "query")}) public void select(){ }
ui效果图:
更加详细的文档,有兴趣的小伙伴可以访问swagger-ui的官网查看~
【推荐】国内首个AI IDE,深度理解中文开发场景,立即下载体验Trae
【推荐】编程新体验,更懂你的AI,立即体验豆包MarsCode编程助手
【推荐】抖音旗下AI助手豆包,你的智能百科全书,全免费不限次数
【推荐】轻量又高性能的 SSH 工具 IShell:AI 加持,快人一步
· 开发者必知的日志记录最佳实践
· SQL Server 2025 AI相关能力初探
· Linux系列:如何用 C#调用 C方法造成内存泄露
· AI与.NET技术实操系列(二):开始使用ML.NET
· 记一次.NET内存居高不下排查解决与启示
· Manus重磅发布:全球首款通用AI代理技术深度解析与实战指南
· 被坑几百块钱后,我竟然真的恢复了删除的微信聊天记录!
· 没有Manus邀请码?试试免邀请码的MGX或者开源的OpenManus吧
· 园子的第一款AI主题卫衣上架——"HELLO! HOW CAN I ASSIST YOU TODAY
· 【自荐】一款简洁、开源的在线白板工具 Drawnix