项目实战接口开发SpringBoot

来源：cnblogs　　作者：hqq的进阶日记　　时间：2023/12/15 8:46:26　　对本文有异议

一、springboot官方demo开发
二、使用SpringBoot开发get方法接口
三、一个要求携带cookie信息访问的get接口开发
四、需要携带参数的get请求两种开发方式
- 4.1 方式1：url：key=value&key=value
- 4.2 方式2：url：ip:port/get/with/param/10/20
五、使用SpringBoot开发post方法接口
六、Cookie验证和返回用户列表的post接口开发

一、springboot官方demo开发

依赖包和父：pom.xml

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.14</version>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <version>2.7.14</version>
    </dependency>
</dependencies>

新建 SampleController.java

import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
@EnableAutoConfiguration
public class SampleController {
    @RequestMapping("/")
    @ResponseBody
    String home(){
        return "Hello World!";
    }
    public static void main(String[] args) {
        SpringApplication.run(SampleController.class,args);
    }
}

运行结果

说明：内置了web服务器

二、使用SpringBoot开发get方法接口

返回cookie信息的get接口开发

新建Application.java 入口

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
@SpringBootApplication
@ComponentScan("com.course.server")
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class,args);
    }
}

com.course.server 新建MyGetMethod.java

@RestController
public class MyGetMethod{
    @RequestMapping(value="/getCookies",method=RequestMethod.GET)
    public String getCookies(){
        return "恭喜你获得cookies信息成功";    
    }
}

Resource下新建文件：application.properties

server.port=${port:8888}

启动后访问
获得cookies
修改com.course.server.MyGetMethod.java 代码：

package com.course.server;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletResponse;
@RestController
public class MyGetMethod {
    @RequestMapping(value = "/getCookies",method= RequestMethod.GET)
    public String getCookies(HttpServletResponse response){
        // HttpServletRequest 装请求信息得类
        // HttpServletResponse 装响应信息得类
        Cookie cookie = new Cookie("login", "true");
        response.addCookie(cookie);
        return "恭喜你获得cookies信息成功";
    }
}

运行：

三、一个要求携带cookie信息访问的get接口开发

MyGetMethod.java 新增方法：

@RestController
public class MyGetMethod{
    @RequestMapping(value="/get/with/Cookies",method=RequestMethod.GET)
    public String getWithCookies(HttpServletRequest request){
        // HttpServletRequest 装请求信息的类
        // HttpServletResponse 装响应信息的类
        Cookie[] cookies = request.getCookies();
        if(Objects.isNull(cookies)){
            return "你必须携带cookies信息来";        
        }
        for(Cookie cookie:cookies){
            if(cookie.getName().equals("login") &&
             cookie.getValue().equals("true")){
                 return "恭喜你访问成功！";           
             }                
        }
        return "你必须携带cookies信息来";    
    }
}

Jemeter访问
1）加一个线程组
2）加一个HTTP请求
3）加一个HTTP Cookie管理器

4）加一个查看结果树

四、需要携带参数的get请求两种开发方式

4.1 方式1：url：key=value&key=value

@RestController
public class MyGetMethod{
    @RequestMapping(value="/get/with/param",method=RequestMethod.GET)
    public Map<String,Integer> getList(@RequestParam Integer start,
                                       @RequestParam Integer end){
        Map<String,Integer> myList = new HashMap<>();
        myList.put("鞋",500);
        myList.put("衣服",200);
        myList.put("干脆面",1);
        return myList;                                                                 
    }
}

结果：

4.2 方式2：url：ip:port/get/with/param/10/20

@RequestMapping(value = "/get/with/param/{start}/{end}",method = RequestMethod.GET)
public Map<String,Integer> getList(@RequestParam(required = false) Integer start,
                                   @RequestParam(required = false) Integer end){
    Map<String,Integer> myList = new HashMap<>();
    myList.put("鞋",500);
    myList.put("衣服",200);
    myList.put("干脆面",1);
    return myList;
}

结果：

五、使用SpringBoot开发post方法接口

新增MyPostMethod.java

import io.swagger.annotations.Api;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.Cookie;
@RestController
@RequestMapping("/v1")
public class MyPostMethod{
    // 这个变量用来装我们的cookies信息
    private static Cookie cookie;
    // 用户登录成功获取到cookies，然后再访问其他接口获取到列表
    
    @RequestMapping(value="/login",method=RequestMethod.POST)
    @ApiOperation(value="登陆接口，成功后获取cookies信息",httpMethod="POST")
    public String login(HttpServletResponse response,
                        @RequestParam(value="userName",required=true) String userName,
                        @RequestParam(value="password",required=true) String password){
        if(userName.equals("zhangsan")&&password.equals("123456")){
            cookie = new Cookie("login","true");
            response.addCookie(cookie);
            return "恭喜你登录成功了！";
        }
        return "用户名或者密码错误！";
    }
}

在Jmeter中测试该接口

六、Cookie验证和返回用户列表的post接口开发

新增lombok依赖

<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>RELEASE</version>
    <scope>compile</scope>
</dependency>

新增类 com/course/bean/User.java

package com.course.bean;
import lombok.Data;
@Data
public class User {
    private String userName;
    private String password;
    private String name;
    private String age;
    private String sex;
}

新增类 com/course/server/MyPostMethod.java

package com.course.server;
import com.course.bean.User;
import org.springframework.web.bind.annotation.*;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@RestController
@RequestMapping("/v1")
public class MyPostMethod {
    // 这个变量用来装我们的cookies信息
    private static Cookie cookie;
    // 用户登录成功获取到cookies，然后再访问其他接口获取到列表
    @RequestMapping(value="/login",method= RequestMethod.POST)
    public String login(HttpServletResponse response,
                        @RequestParam(value="userName",required=true) String userName,
                        @RequestParam(value="password",required=true) String password){
        if(userName.equals("zhangsan")&&password.equals("123456")){
            cookie = new Cookie("login","true");
            response.addCookie(cookie);
            return "恭喜你登录成功了！";
        }
        return "用户名或者密码错误！";
    }
    @RequestMapping(value="/getUserList",method = RequestMethod.POST)
    public String getUserList(HttpServletRequest request,
                            @RequestBody User u){
        // 获取cookies
        Cookie[] cookies = request.getCookies();
        // 验证cookies是否合法
        for (Cookie c:cookies){
            if (c.getName().equals("login") && c.getValue().equals("true") && u.getUserName().equals("zhangsan") && u.getPassword().equals("123456")){
                User user = new User();
                user.setName("lisi");
                user.setAge("14");
                user.setSex("man");
                return user.toString();
            }
        }
        return "参数不合法";
    }
}