java web 之springboot教程(九)----整合Swagger2

最新推荐文章于 2024-08-17 12:33:42 发布

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Swagger2,直接生成接口文档.

1,导入库：

<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>

2，Swagger配置类

其实这个配置类，只要了解具体能配置哪些东西就好了，毕竟这个东西配置一次之后就不用再动了。特别要注意的是里面配置了api文件也就是controller包的路径，不然生成的文档扫描不到接口。

在core包下新建Swagger2.java类：

package com.cx.springbootdemo.core;
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;

@Configuration
public class Swagger2 {

    @Bean
    public Docket createRestApi() {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.cx.springbootdemo.controller"))
                .paths(PathSelectors.any())
                .build();
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("springboot利用swagger构建api文档")
                .description("简单优雅的restfun风格")
                .termsOfServiceUrl("https://blog.youkuaiyun.com/oneil2016")
                .version("1.0")
                .build();
    }
}

用@Configuration注解该类，等价于XML中配置beans；用@Bean标注方法等价于XML中配置bean。

在SpringbootdemoApplication.java中加上注解@EnableSwagger2 表示开启Swagger。

package com.cx.springbootdemo;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

@SpringBootApplication
@EnableSwagger2
@MapperScan("com.cx.springbootdemo.mapper")
public class SpringbootdemoApplication {

	public static void main(String[] args) {
		SpringApplication.run(SpringbootdemoApplication.class, args);
	}
}

controller上添加swagger的注解。UserController.java:

package com.cx.springbootdemo.controller;

import com.cx.springbootdemo.pojo.JsonResult;
import com.cx.springbootdemo.pojo.User;
import com.cx.springbootdemo.service.UserMapperService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import springfox.documentation.annotations.ApiIgnore;

import java.util.List;

//@CrossOrigin(origins = "*",
//        maxAge = 3600,
//        methods = {RequestMethod.GET, RequestMethod.POST})
@RestController
@Api(tags="用户操作")
public class UserController {

    @Autowired
    private UserMapperService userService;

    /**
     * 根据ID查询用户
     * @param id
     * @return
     */
    @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 = "Integer", paramType = "path")
    @RequestMapping(value = "user/{id}", method = RequestMethod.GET)
    public ResponseEntity<JsonResult> getUserById (@PathVariable(value = "id") Integer id){
        JsonResult r = new JsonResult();
        try {
            User user = userService.getUserById(id);
            r.setResult(user);
            r.setStatus("ok");
        } catch (Exception e) {
            r.setResult(e.getClass().getName() + ":" + e.getMessage());
            r.setStatus("error");
            e.printStackTrace();
        }
        return ResponseEntity.ok(r);
    }

    /**
     * 查询用户列表
     * @return
     */
//    @CrossOrigin
    @ApiOperation(value="获取用户列表", notes="获取用户列表")
    @RequestMapping(value = "users", method = RequestMethod.GET)
    public ResponseEntity<JsonResult> getUserList (){
        JsonResult r = new JsonResult();
        try {
            List<User> users = userService.getUserList();
            r.setResult(users);
            r.setStatus("ok");
        } catch (Exception e) {
            r.setResult(e.getClass().getName() + ":" + e.getMessage());
            r.setStatus("error");
            e.printStackTrace();
        }
        return ResponseEntity.ok(r);
    }

    /**
     * 添加用户
     * @param user
     * @return
     */
    @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 = "user", method = RequestMethod.POST)
    public ResponseEntity<JsonResult> add (@RequestBody User user){
        JsonResult r = new JsonResult();
        try {
            int orderId = userService.add(user);
            if (orderId < 0) {
                r.setResult(orderId);
                r.setStatus("fail");
            } else {
                r.setResult(orderId);
                r.setStatus("ok");
            }
        } catch (Exception e) {
            r.setResult(e.getClass().getName() + ":" + e.getMessage());
            r.setStatus("error");

            e.printStackTrace();
        }
        return ResponseEntity.ok(r);
    }

    /**
     * 根据id删除用户
     * @param id
     * @return
     */
    @ApiOperation(value="删除用户", notes="根据url的id来指定删除用户")
    @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long", paramType = "path")
    @RequestMapping(value = "user/{id}", method = RequestMethod.DELETE)
    public ResponseEntity<JsonResult> delete (@PathVariable(value = "id") Integer id){
        JsonResult r = new JsonResult();
        try {
            int ret = userService.delete(id);
            if (ret < 0) {
                r.setResult(ret);
                r.setStatus("fail");
            } else {
                r.setResult(ret);
                r.setStatus("ok");
            }
        } catch (Exception e) {
            r.setResult(e.getClass().getName() + ":" + e.getMessage());
            r.setStatus("error");

            e.printStackTrace();
        }
        return ResponseEntity.ok(r);
    }

    /**
     * 根据id修改用户信息
     * @param user
     * @return
     */
    @ApiOperation(value="更新信息", notes="根据url的id来指定更新用户信息")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "id", value = "用户ID", required = true, dataType = "Long",paramType = "path"),
            @ApiImplicitParam(name = "user", value = "用户实体user", required = true, dataType = "User")
    })
    @RequestMapping(value = "user/{id}", method = RequestMethod.PUT)
    public ResponseEntity<JsonResult> update (@PathVariable("id") Integer id, @RequestBody User user){
        JsonResult r = new JsonResult();
        try {
            int ret = userService.update(id, user);
            if (ret < 0) {
                r.setResult(ret);
                r.setStatus("fail");
            } else {
                r.setResult(ret);
                r.setStatus("ok");
            }
        } catch (Exception e) {
            r.setResult(e.getClass().getName() + ":" + e.getMessage());
            r.setStatus("error");

            e.printStackTrace();
        }
        return ResponseEntity.ok(r);
    }

    @ApiIgnore//使用该注解忽略这个API
    @RequestMapping(value = "/hi", method = RequestMethod.GET)
    public String  jsonTest() {
        return " hi you!";
    }

}

重启springboot，访问http://localhost:8888/swagger-ui.html#/；我的端口配置的是8888.

解释：

swagger通过注解表明该接口会生成文档，包括接口名、请求方法、参数、返回信息的等等。

@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
@ApiProperty：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

one more thing,让接口美化一点；

添加库：

<dependency>
			<groupId>com.github.xiaoymin</groupId>
			<artifactId>swagger-bootstrap-ui</artifactId>
			<version>1.6</version>
		</dependency>

注意：重启下springboot；

访问http://localhost:8888/doc.html