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這篇文章主要講解了“Spring Boot統(tǒng)一接口返回及全局異常處理的方法”,文中的講解內(nèi)容簡單清晰,易于學(xué)習(xí)與理解,下面請大家跟著小編的思路慢慢深入,一起來研究和學(xué)習(xí)“Spring Boot統(tǒng)一接口返回及全局異常處理的方法”吧!
定義公共模塊,實(shí)現(xiàn)統(tǒng)一接口定義規(guī)范和異常處理,其他的系統(tǒng)進(jìn)行依賴和擴(kuò)展即可。
public interface BaseResultCode { /** * 狀態(tài)碼 * @return */ int getCode(); /** * 提示信息 * @return */ String getMsg(); }
public enum ResultCode implements BaseResultCode { OK(200, "成功"), ERROR(300,"系統(tǒng)異常"), NEED_AUTH(301, "非法請求,請重新登錄"), PARAMTER_ERROR(302, "參數(shù)錯(cuò)誤"); //省略其他定義錯(cuò)誤碼 private int code; private String msg; private ResultCode(int code, String msg) { this.code = code; this.msg = msg; } public static ResultCode getValue(int code) { for (ResultCode errorCode : values()) { if (errorCode.getCode() == code) { return errorCode; } } return null; } //省略Get、Set方法 }
public class SysException extends RuntimeException { private static final long serialVersionUID = 5225171867523879342L; private int code; private String msg; private Object[] params; private BaseResultCode errorCode; public SysException() { super(); } public SysException(String message) { super(message); } public SysException(Throwable cause) { super(cause); } public SysException(int code ,String message) { this.code = code; this.msg = message; } public SysException(int code ,String message, Object[] params) { this(code, message); this.params= params; } public SysException(String message, Throwable cause) { super(message, cause); } public SysException(BaseResultCode errorCode) { this.errorCode = errorCode; } public SysException(String message, Object[] params) { super(message); this.params = params; } public SysException(BaseResultCode errorCode, String message, Object[] params) { this(message, params); this.errorCode = errorCode; } /** * Construct by default * * @param message * message * @param parameters * parameters * @param cause * cause */ public SysException(String message, Object[] params, Throwable cause) { super(message, cause); this.params = params; } public int getCode() { return code; } public void setCode(int code) { this.code = code; } public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } /** * @return the params */ public Object[] getParams() { return params; } /** * @param params * the params to set */ public void setParams(Object[] params) { this.params = params; } public BaseResultCode getErrorCode() { return errorCode; } public void setErrorCode(BaseResultCode errorCode) { this.errorCode = errorCode; } }
public class Result implements Serializable { private static final long serialVersionUID = -1773941471021475043L; private Object data; private int code; private String msg; public Result() { } public Result(int code, Object data, String msg) { this.code = code; this.data = data; this.msg = msg; } public Result(int code, String desc) { this(code, null, desc); } public Result(BaseResultCode errorCode) { this(errorCode.getCode(), null, errorCode.getMsg()); } public static Result success() { return success(null); } public static Result success(Object data) { Result result = new Result(); result.setData(data); result.setCode(ResultCode.OK.getCode()); return result; } public static Result error(String msg) { Result result = new Result(); result.setCode(ResultCode.ERROR.getCode()); result.setMsg(msg); return result; } public static Result error(BaseResultCode baseCode) { Result result = new Result(); result.setCode(baseCode.getCode()); result.setMsg(baseCode.getMsg()); return result; } }
個(gè)人建議:統(tǒng)一接口輸出類不要定義為泛型類型
@RestControllerAdvice public class SysExceptionHandler { public static Log logger = LogManager.getLogger(SysExceptionHandler.class); @ExceptionHandler(Exception.class) public Result handleException(HttpServletRequest request, Exception ex) { logger.error("Handle Exception Request Url:{},Exception:{}",request.getRequestURL(),ex); Result result = new Result(); //系統(tǒng)異常 if (ex instanceof SysException) { SysException se = (SysException) ex; BaseResultCode resultCode =se.getErrorCode(); if(resultCode==null) { result = Result.error(se.getMessage()); } else { result = new Result(resultCode.getCode(), StringUtil.isNotEmpty(se.getMessage())?se.getMessage():resultCode.getMsg()); } } //參數(shù)錯(cuò)誤 else if (ex instanceof ConstraintViolationException) { ConstraintViolationException v = (ConstraintViolationException) ex; String message = v.getConstraintViolations().iterator().next() .getMessage(); result.setCode(ResultCode.PARAMTER_ERROR.getCode()); result.setMsg(ResultCode.PARAMTER_ERROR.getMsg() + ":" + message); } //參數(shù)錯(cuò)誤 else if (ex instanceof BindException) { BindException v = (BindException) ex; String message = v.getAllErrors().stream().map(ObjectError::getDefaultMessage).collect(Collectors.joining(",")); result.setCode(ResultCode.PARAMTER_ERROR.getCode()); result.setMsg(ResultCode.PARAMTER_ERROR.getMsg() + ":" + message); } //參數(shù)錯(cuò)誤 else if (ex instanceof MethodArgumentNotValidException) { MethodArgumentNotValidException v = (MethodArgumentNotValidException) ex; String message = v.getBindingResult().getAllErrors().stream().map(ObjectError::getDefaultMessage).collect(Collectors.joining(",")); result.setCode(ResultCode.PARAMTER_ERROR.getCode()); result.setMsg(ResultCode.PARAMTER_ERROR.getMsg() + ":" + message); } else { result = new Result(ResultCode.ERROR.getCode(),ExceptionUtil.getErrorMsg(ex)); } logger.info("exception handle reuslt:" + result); return result; } }
上述定義已經(jīng)可以實(shí)現(xiàn)全局接口和異常的統(tǒng)一處理,但是存在的如下問題
每個(gè)controller
都需要返回Reesult類型,且每個(gè)方法都需要返回Result.success()
或者Result.success(data)
的結(jié)果,有點(diǎn)重復(fù),需要進(jìn)行優(yōu)化。
@GetMapping("addUser") public Result add() { for(int i=0;i<10;i++) { TUser user = new TUser(); //user.setOid(IdWorker.getId()); user.setName("shareing_"+i); user.setAge(i); userService.addUser(user); } return Result.success(); }
實(shí)現(xiàn)方式只需要實(shí)現(xiàn)ResponseBodyAdvice接口,重寫beforeBodyWrite方法接口。
@RestControllerAdvice public class ResponseAdvice implements ResponseBodyAdvice<Object> { private Logger logger = LoggerFactory.getLogger(ResponseAdvice.class); @Override public boolean supports(MethodParameter returnType, Class<? extends HttpMessageConverter<?>> converterType) { return true; } @Override public Object beforeBodyWrite(Object o, MethodParameter returnType, MediaType selectedContentType, Class<? extends HttpMessageConverter<?>> selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) { logger.info("before body write param:{}",o); if(o instanceof String) { //序列化結(jié)果輸出 return FastJsonUtil.toJSONString(Result.success(o)); } else if (o instanceof Result) { return o; } return Result.success(o); } }
經(jīng)過優(yōu)化后,controller
輸出可以根據(jù)業(yè)務(wù)的需求定義輸出對象。
@GetMapping("getUserByName") public TUser getUserByName1(@RequestParam String name) { logger.info("getUserByName paramter name:"+name); return userService.getUserByName(name); }
子系統(tǒng)引入common的jar包,
<dependency> <groupId>com.xx</groupId> <artifactId>xx-common</artifactId> <version>2.0</version> </dependency>
public enum OrderModelErrorCode implements BaseResultCode { ORDER_STATUS_ERROR(1000, "訂單狀態(tài)不正確"); private int code; private String msg; private UserModelErrorCode(int code, String msg) { this.code = code; this.msg = msg; } @Override public int getCode() { return code; } @Override public String getMsg() { return msg; } }
定義異常處理類,繼承公共異常處理類SysExceptionHandler
@RestControllerAdvice public class OrderModalExceptionHandle extends SysExceptionHandler { @Override public Result handleException(HttpServletRequest request, Exception ex) { return super.handleException(request, ex); //子系統(tǒng)可以擴(kuò)展異常處理 } }
子系統(tǒng)使用示例:
@Override public Order getOrder(String orderId) { Order order =getOrder(orderId); //相關(guān)偽代碼 if(order.getStatus()>120) { throw new SysException(OrderModelErrorCode.ORDER_STATUS_ERROR); } return order; }
感謝各位的閱讀,以上就是“Spring Boot統(tǒng)一接口返回及全局異常處理的方法”的內(nèi)容了,經(jīng)過本文的學(xué)習(xí)后,相信大家對Spring Boot統(tǒng)一接口返回及全局異常處理的方法這一問題有了更深刻的體會(huì),具體使用情況還需要大家實(shí)踐驗(yàn)證。這里是億速云,小編將為大家推送更多相關(guān)知識點(diǎn)的文章,歡迎關(guān)注!
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