不少時候,咱們須要建立一個接口項目用來數據調轉,其中不包含任何業務邏輯,好比咱們公司。這時咱們就須要實現一個具備Restful API的接口項目。html
本文介紹springboot使用swagger2實現Restful API。java
本項目使用mysql+jpa+swagger2。mysql
首先pom中加入swagger2,代碼以下:web
<?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>
<groupId>com.dalaoyang</groupId>
<artifactId>springboot_swagger2</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>springboot_swagger2</name>
<description>springboot_swagger2</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<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-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</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>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>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
複製代碼
接下來是配置文件,和整合jpa同樣。代碼以下:spring
##端口號
server.port=8888
##數據庫配置
##數據庫地址
spring.datasource.url=jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=false
##數據庫用戶名
spring.datasource.username=root
##數據庫密碼
spring.datasource.password=root
##數據庫驅動
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
複製代碼
建立一個swagger2配置類,簡單解釋一下,@Configuration註解讓spring來加載配置,@EnableSwagger2開啓swagger2。sql
package com.dalaoyang.config;
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;
/**
* @author dalaoyang
* @Description
* @project springboot_learn
* @package com.dalaoyang.config
* @email yangyang@dalaoyang.cn
* @date 2018/4/9
*/
@Configuration
@EnableSwagger2
public class Swagger2Config {
@Bean
public Docket createRestApi() {
return new Docket(DocumentationType.SWAGGER_2)
.apiInfo(apiInfo())
.select()
.apis(RequestHandlerSelectors.basePackage("com.dalaoyang.swagger"))
.paths(PathSelectors.any())
.build();
}
private ApiInfo apiInfo() {
return new ApiInfoBuilder()
.title("使用Swagger2構建RESTful APIs")
.description("關注博主博客:https://www.dalaoyang.cn/")
.termsOfServiceUrl("https://www.dalaoyang.cn/")
.contact("dalaoyang")
.version("1.0")
.build();
}
}
複製代碼
建立一個user類做爲model數據庫
package com.dalaoyang.model;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.validation.constraints.NotNull;
/**
* @author dalaoyang
* @Description
* @project springboot_learn
* @package com.dalaoyang.model
* @email yangyang@dalaoyang.cn
* @date 2018/4/9
*/
@Entity
@ApiModel(description = "user")
public class User {
@ApiModelProperty(value = "主鍵id",hidden = true)
@GeneratedValue
@Id
int id;
@ApiModelProperty(value = "用戶名稱")
@NotNull
@Column
String userName;
@ApiModelProperty(value = "用戶密碼")
@Column
String userPassword;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserPassword() {
return userPassword;
}
public void setUserPassword(String userPassword) {
this.userPassword = userPassword;
}
public User(int id, String userName, String userPassword) {
this.id=id;
this.userName = userName;
this.userPassword = userPassword;
}
public User(String userName, String userPassword) {
this.userName = userName;
this.userPassword = userPassword;
}
public User() {
}
}
複製代碼
jpa數據操做類UserRepositoryapache
package com.dalaoyang.repository;
import com.dalaoyang.model.User;
import org.springframework.data.jpa.repository.JpaRepository;
/**
* @author dalaoyang
* @Description
* @project springboot_learn
* @package com.dalaoyang.repository
* @email yangyang@dalaoyang.cn
* @date 2018/4/9
*/
public interface UserRepository extends JpaRepository<User,Integer> {
User findById(int id);
}
複製代碼
而後添加文檔內容,其實和寫controller同樣,只不過方法和參數中間穿插一些註解。json
package com.dalaoyang.swagger;
import com.dalaoyang.model.User;
import com.dalaoyang.repository.UserRepository;
import io.swagger.annotations.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import java.util.List;
/**
* @author dalaoyang
* @Description
* @project springboot_learn
* @package com.dalaoyang.swagger
* @email yangyang@dalaoyang.cn
* @date 2018/4/9
*/
@RestController
@RequestMapping(value="/users")
@Api(value="用戶操做接口",tags={"用戶操做接口"})
public class UserSwagger {
@Autowired
UserRepository userRepository;
@ApiOperation(value="獲取用戶詳細信息", notes="根據用戶的id來獲取用戶詳細信息")
@ApiImplicitParam(name = "id", value = "用戶ID", required = true,paramType = "query", dataType = "Integer")
@GetMapping(value="/findById")
public User findById(@RequestParam(value = "id")int id){
User user = userRepository.findById(id);
return user;
}
@ApiOperation(value="獲取用戶列表", notes="獲取用戶列表")
@GetMapping(value="/getUserList")
public List getUserList(){
return userRepository.findAll();
}
@ApiOperation(value="保存用戶", notes="保存用戶")
@PostMapping(value="/saveUser")
public String saveUser(@RequestBody @ApiParam(name="用戶對象",value="傳入json格式",required=true) User user){
userRepository.save(user);
return "success!";
}
@ApiOperation(value="修改用戶", notes="修改用戶")
@ApiImplicitParams({
@ApiImplicitParam(name="id",value="主鍵id",required=true,paramType="query",dataType="Integer"),
@ApiImplicitParam(name="username",value="用戶名稱",required=true,paramType="query",dataType = "String"),
@ApiImplicitParam(name="password",value="用戶密碼",required=true,paramType="query",dataType = "String")
})
@GetMapping(value="/updateUser")
public String updateUser(@RequestParam(value = "id")int id,@RequestParam(value = "username")String username,
@RequestParam(value = "password")String password){
User user = new User(id, username, password);
userRepository.save(user);
return "success!";
}
@ApiOperation(value="刪除用戶", notes="根據用戶的id來刪除用戶")
@ApiImplicitParam(name = "id", value = "用戶ID", required = true,paramType = "query", dataType = "Integer")
@DeleteMapping(value="/deleteUserById")
public String deleteUserById(@RequestParam(value = "id")int id){
User user = userRepository.findById(id);
userRepository.delete(user);
return "success!";
}
}
複製代碼
啓動項目,訪問http://localhost:8888/swagger-ui.html,能夠看到以下圖api
爲了方便你們學習觀看,我分別用了幾種不一樣的方法寫,
1.刪除用戶,代碼以下
@ApiOperation(value="刪除用戶", notes="根據用戶的id來刪除用戶")
@ApiImplicitParam(name = "id", value = "用戶ID", required = true,paramType = "query", dataType = "Integer")
@DeleteMapping(value="/deleteUserById")
public String deleteUserById(@RequestParam(value = "id")int id){
User user = userRepository.findById(id);
userRepository.delete(user);
return "success!";
}
複製代碼
@ApiOperation(value="獲取用戶詳細信息", notes="根據用戶的id來獲取用戶詳細信息")
@ApiImplicitParam(name = "id", value = "用戶ID", required = true,paramType = "query", dataType = "Integer")
@GetMapping(value="/findById")
public User findById(@RequestParam(value = "id")int id){
User user = userRepository.findById(id);
return user;
}
複製代碼
3.獲取用戶列表
@ApiOperation(value="獲取用戶列表", notes="獲取用戶列表")
@GetMapping(value="/getUserList")
public List getUserList(){
return userRepository.findAll();
}
複製代碼
4.保存用戶
@ApiOperation(value="保存用戶", notes="保存用戶")
@PostMapping(value="/saveUser")
public String saveUser(@RequestBody @ApiParam(name="用戶對象",value="傳入json格式",required=true) User user){
userRepository.save(user);
return "success!";
}
複製代碼
5.修改用戶
@ApiOperation(value="修改用戶", notes="修改用戶")
@ApiImplicitParams({
@ApiImplicitParam(name="id",value="主鍵id",required=true,paramType="query",dataType="Integer"),
@ApiImplicitParam(name="username",value="用戶名稱",required=true,paramType="query",dataType = "String"),
@ApiImplicitParam(name="password",value="用戶密碼",required=true,paramType="query",dataType = "String")
})
@PutMapping(value="/updateUser")
public String updateUser(@RequestParam(value = "id")int id,@RequestParam(value = "username")String username,
@RequestParam(value = "password")String password){
User user = new User(id, username, password);
userRepository.save(user);
return "success!";
}
複製代碼
而後給你們分享一下我以前學習時記錄在有道雲筆記的關於swagger2的使用說明,原創做者是誰,我也記不清了。若是原創做者看到的話,能夠私聊我,我給您的名字加上,抱歉。
@Api:用在請求的類上,表示對類的說明
tags="說明該類的做用,能夠在UI界面上看到的註解"
value="該參數沒什麼意義,在UI界面上也看到,因此不須要配置"
示例:
@Api(tags="APP用戶註冊Controller")
@ApiOperation:用在請求的方法上,說明方法的用途、做用
value="說明方法的用途、做用"
notes="方法的備註說明"
示例:
@ApiOperation(value="用戶註冊",notes="手機號、密碼都是必輸項,年齡隨邊填,但必須是數字")
@ApiImplicitParams:用在請求的方法上,表示一組參數說明
@ApiImplicitParam:用在@ApiImplicitParams註解中,指定一個請求參數的各個方面
name:參數名
value:參數的漢字說明、解釋
required:參數是否必須傳
paramType:參數放在哪一個地方
· header --> 請求參數的獲取:@RequestHeader
· query --> 請求參數的獲取:@RequestParam
· path(用於restful接口)--> 請求參數的獲取:@PathVariable
· body(不經常使用)
· form(不經常使用)
dataType:參數類型,默認String,其它值dataType="Integer"
defaultValue:參數的默認值
示例:
@ApiImplicitParams({
@ApiImplicitParam(name="mobile",value="手機號",required=true,paramType="form"),
@ApiImplicitParam(name="password",value="密碼",required=true,paramType="form"),
@ApiImplicitParam(name="age",value="年齡",required=true,paramType="form",dataType="Integer")
})
@ApiResponses:用在請求的方法上,表示一組響應
@ApiResponse:用在@ApiResponses中,通常用於表達一個錯誤的響應信息
code:數字,例如400
message:信息,例如"請求參數沒填好"
response:拋出異常的類
@ApiOperation(value = "select1請求",notes = "多個參數,多種的查詢參數類型")
@ApiResponses({
@ApiResponse(code=400,message="請求參數沒填好"),
@ApiResponse(code=404,message="請求路徑沒有或頁面跳轉路徑不對")
})
@ApiModel:用於響應類上,表示一個返回響應數據的信息
(這種通常用在post建立的時候,使用@RequestBody這樣的場景,
請求參數沒法使用@ApiImplicitParam註解進行描述的時候)
@ApiModelProperty:用在屬性上,描述響應類的屬性
示例:
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import java.io.Serializable;
@ApiModel(description= "返回響應數據")
public class RestMessage implements Serializable{
@ApiModelProperty(value = "是否成功")
private boolean success=true;
@ApiModelProperty(value = "返回對象")
private Object data;
@ApiModelProperty(value = "錯誤編號")
private Integer errCode;
@ApiModelProperty(value = "錯誤信息")
private String message;
}
POST請求傳入對象
示例:
@ApiOperation(value="保存用戶", notes="保存用戶")
@RequestMapping(value="/saveUser", method= RequestMethod.POST)
public String saveUser(@RequestBody @ApiParam(name="用戶對象",value="傳入json格式",required=true) User user){
userDao.save(user);
return "success!";
}
複製代碼