[Java知识库]特好用的Http请求

项目中导入Maven

         <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>com.github.lianjiatech</groupId>
            <artifactId>retrofit-spring-boot-starter</artifactId>
            <version>2.2.2</version>
        </dependency>

启动8080的项目，接口如下

@Slf4j
@RestController
@RequestMapping("/user")
public class UserController {
	List<User> list = new ArrayList<>();
	@GetMapping
	public List<User> getUser() {

		list.add(new User(1, "张三"));
		list.add(new User(2, "李四"));
		return list;
	}

	@GetMapping("/{id}")
	public User getUserById(@PathVariable Integer id) {
		return new User(id, "法外狂徒张三");
	}

	@PostMapping
	public Boolean add(@RequestBody User user) {
		return list.add(user);
	}

	@PutMapping("/{id}")
	public Boolean update(@RequestBody User user, @PathVariable Integer id) {
		list.forEach(x ->{
			if(x.getId().equals(id)){
				x.setUsername(user.getUsername());
			}
		});
		return true;
	}

	@DeleteMapping("/{id}")
	public Boolean delete(@PathVariable Integer id) {
		return list.remove(id);

	}

启动8081的项目，接口如下

@RestController
public class TestController {
	@Resource
	private UserApi userApi;

	@GetMapping("/list")
	public Object getList() {
		return userApi.getUser();
	}

	@GetMapping("/{id}")
	public Object getUserById(@PathVariable Integer id) {
		return userApi.getUserById(id);
	}

	@PostMapping("/add")
	public Object add(@RequestParam("username") String username,@RequestParam("id") Integer id){
	return userApi.addUser(new User(id, username));
	}

	@PutMapping("/update")
	public Object update(@RequestParam Integer id){
		return userApi.updateUser(new User(4, "lisi"),id);
	}

	@DeleteMapping("/delete")
	public Object delete(@RequestParam Integer id){
		return userApi.deleteUserById(id);
	}

8081的项目中创建接口

@RetrofitClient(baseUrl = "http://localhost:8080/") //其他服务的请求地址
public interface UserApi {

	@GET("user")  // 与@GetMapping("/user") 请求路径对应
	List<User> getUser(); 

	@GET("user/{id}") //与@GetMapping("/user/{id}") 请求路径对应
	User getUserById(@Path("id")Integer id);

	@POST("user") //与@PostMapping("/user") 请求路径对应
	Boolean addUser(@Body User user);

	@PUT("user/{id}") // 同理
	Boolean updateUser(@Body User user,@Path("id") Integer id);

	@DELETE("user/{id}") // 同理
	Boolean deleteUserById(@Path("id") Integer id);

}

测试

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