UserAccountCheckUsernameApiController.java

package org.xmx0632.deliciousfruit.api.v1;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.xmx0632.deliciousfruit.api.v1.bo.CheckUsernameRequest;
import org.xmx0632.deliciousfruit.api.v1.bo.CheckUsernameResponse;
import org.xmx0632.deliciousfruit.api.v1.bo.Result;
import org.xmx0632.deliciousfruit.service.UserAccountService;

/**
 * UserAccount的API的Controller.
 * 
 * @author xmx0632
 */
@Controller
@RequestMapping(value = "/api/v1")
public class UserAccountCheckUsernameApiController {

	private static Logger log = LoggerFactory
			.getLogger(UserAccountCheckUsernameApiController.class);

	@Autowired
	private UserAccountService userAccountService;

	@RequestMapping(value = "/checkUsername", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_VALUE)
	@ResponseBody
	public ResponseEntity<CheckUsernameResponse> checkUsername(
			@RequestBody CheckUsernameRequest request) {

		log.debug("Request:{}", request);

		long count = userAccountService.countByUsername(request.getLoginName());
		CheckUsernameResponse response = new CheckUsernameResponse();
		Result result = getResult(count);
		response.setResult(result);
		log.debug("response:{}", response);
		return new ResponseEntity<CheckUsernameResponse>(response,
				HttpStatus.OK);
	}

	private Result getResult(long count) {
		if (count == 0) {
			return new Result(Result.SUCCESS, "username available");
		}
		return new Result(Result.FAIL, "username unavailable");
	}

}