@AllArgsConstructor替代@Autowired构造注入,多个bean 注入时更加清晰L
@Slf4j
@Configuration
@AllArgsConstructor
public class RouterFunctionConfiguration {
private final HystrixFallbackHandler hystrixFallbackHandler;
private final ImageCodeHandler imageCodeHandler;
}
@Slf4j
@Configuration
public class RouterFunctionConfiguration {
@Autowired
private HystrixFallbackHandler hystrixFallbackHandler;
@Autowired
private ImageCodeHandler imageCodeHandler;
}
@RequiredArgsConstructor相较于 @AllArgsConstructor 只会构造注入 final 注释的属性，推荐使用
@RestController
@RequiredArgsConstructor
@RequestMapping("/user")
@Api(value = "user", tags = "用户管理模块")
public class SysUserController {
private final SysUserService userService;
}
@SneakyThrows 抛出异常
@SneakyThrows
private void checkCode(ServerHttpRequest request) {
String code = request.getQueryParams().getFirst("code");
if (StrUtil.isBlank(code)) {
throw new ValidateCodeException("验证码不能为空");
}
redisTemplate.delete(key);
}
// 不使用就要加这个抛出
private void checkCode(ServerHttpRequest request) throws ValidateCodeException {
String code = request.getQueryParams().getFirst("code");
if (StrUtil.isBlank(code)) {
throw new ValidateCodeException("验证码不能为空");
}
}
@UtilityClass工具类再也不用定义static的方法了，直接就可以Class.Method 使用
@UtilityClass
public class Utility {
public String getName() {
return "name";
}
}
public static void main(String[] args) {
System.out.println(Utility.getName());
}
@Cleanup: 清理流对象,不用手动去关闭流，多么优雅
@Cleanup
OutputStream outStream = new FileOutputStream(new File("text.txt"));
@Cleanup
InputStream inStream = new FileInputStream(new File("text2.txt"));
byte[] b = new byte[65536];
while (true) {
int r = inStream.read(b);
if (r == -1) break;
outStream.write(b, 0, r);
}
