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這篇文章主要介紹“springboot框架的全局異常怎么處理”,在日常操作中,相信很多人在springboot框架的全局異常怎么處理問題上存在疑惑,小編查閱了各式資料,整理出簡單好用的操作方法,希望對大家解答”springboot框架的全局異常怎么處理”的疑惑有所幫助!接下來,請跟著小編一起來學(xué)習(xí)吧!
系統(tǒng)框架搭建的前期過程中,為了約束代碼規(guī)范,我們會對一些通用功能做一些處理,比如聲明一些系統(tǒng)公用錯誤類、封裝通用返回結(jié)果、統(tǒng)一異常處理等,這樣做的優(yōu)勢是團隊開發(fā)過程中能夠形成統(tǒng)一的代碼規(guī)范,增強代碼可讀性,同時又便于后期代碼維護。本文主要介紹下框架中異常的處理:
1.聲明全局異常處理類,并添加@ControllerAdvice和@RestController注解
代碼如下:
@ControllerAdvice @RestController public class GlobalExceptionHandler { private final Logger logger = Logger.getLogger(GlobalExceptionHandler.class); //空指針異常 @ExceptionHandler(NullPointerException.class) public Map<String, Object> nullPointer(NullPointerException e,HttpServletRequest req){ logger.error(e.getMessage()); e.printStackTrace(); return ResultObject.newResultObj(ErrorCode.NULLPOINTER); } //IO異常 @ExceptionHandler(IOException.class,HttpServletRequest req, HttpServletResponse res) public Map<String, Object> IOException(IOException e){ logger.error(e.getMessage()); e.printStackTrace(); return ResultObject.newResultObj(ErrorCode.IOEXCEPTION); } //權(quán)限不足異常 @ExceptionHandler(UnauthorizedException.class) public Map<String, Object> unauth(HttpServletRequest req, HttpServletResponse res){ return ResultObject.newResultObj(ErrorCode.UNAUTH); } //未登錄異常 @ExceptionHandler(AuthorizationException.class) public Map<String, Object> unlogin(HttpServletRequest req, HttpServletResponse res){ return ResultObject.newResultObj(ErrorCode.NOTLOGIN); } //其它異常 @ExceptionHandler(Exception.class) public Map<String, Object> error(Exception e,HttpServletRequest req, HttpServletResponse res){ logger.error(e.getMessage()); e.printStackTrace(); return ResultObject.newResultObj(ErrorCode.SYSTEM); } }
2.聲明系統(tǒng)通用錯誤處理類
/** * 系統(tǒng)通用錯誤處理類 */ public class ErrorCode { //返回碼 private int code = 0; //描述信息 private String errmsg = "SUCCESS"; //成功 public static final ErrorCode SUCCESS = new ErrorCode(0,"SUCCESS"); public static final ErrorCode PARAMS = new ErrorCode(100000,"參數(shù)錯誤"); public static final ErrorCode SYSTEM = new ErrorCode(100001,"系統(tǒng)錯誤"); public static final ErrorCode UNLOGIN = new ErrorCode(100002,"未登錄"); public static final ErrorCode UNAUTH = new ErrorCode(100003,"權(quán)限錯誤"); public static final ErrorCode NULLPOINTER = new ErrorCode(100004,"空指針錯誤"); public static final ErrorCode IOEXCEPTION = new ErrorCode(100005,"IO錯誤"); public static final ErrorCode UPLOAD_FAIL = new ErrorCode(100006,"文件上傳失敗"); public static final ErrorCode REPEAT = new ErrorCode(100007,"數(shù)據(jù)已存在"); public ErrorCode() {} @Override public String toString() { return String.format("{\"errmsg\": \"%s\", \"code\": %d}", errmsg, code); } public int getCode() { return code; } public ErrorCode setCode(int code) { this.code = code; return this; } public String getErrmsg() { return errmsg; } public ErrorCode setErrmsg(String errmsg) { this.errmsg = errmsg; return this; } public ErrorCode(int code, String errmsg) { this.code = code; this.errmsg = errmsg; } }
3.聲明全局異常處理類中的結(jié)果返回類
import java.util.HashMap; import java.util.Map; import javax.servlet.http.HttpServletResponse; import com.xxx.ErrorCode;//此處引用自己errorCode類所在的包路徑 import org.json.JSONObject; public class ResultObject { /** * 輸出錯誤信息 * @param errorCode */ public static Map<String, Object> newResultObj(ErrorCode errorCode){ Map<String, Object> obj = new HashMap<String, Object>(); obj.put("code", errorCode.getCode()); obj.put("errmsg", errorCode.getErrmsg()); return obj; } /** * 輸出帶數(shù)據(jù)的成功信息 * @param data */ public static Map<String, Object> newResultObj(Object data){ Map<String, Object> obj = new HashMap<String, Object>(); obj.put("code", ErrorCode.SUCCESS.getCode()); obj.put("errmsg", ErrorCode.SUCCESS.getErrmsg()); if(null != data){ obj.put("data", data); } return obj; } /** * 輸出帶數(shù)據(jù)的錯誤信息 * @param errorCode * @param data */ public static Map<String, Object> newResultObj(ErrorCode errorCode, Object data){ Map<String, Object> obj = new HashMap<String, Object>(); obj.put("code", errorCode.getCode()); obj.put("errmsg", errorCode.getErrmsg()); if(null != data){ obj.put("data", data); } return obj; } /** * 輸出結(jié)果 */ public static void outputResult(HttpServletResponse response, ErrorCode errorCode){ try { JSONObject json = new JSONObject(); json.put("code", errorCode.getCode()); json.put("errmsg", errorCode.getErrmsg()); response.setCharacterEncoding("UTF-8"); response.setContentType("application/json;charset=UTF-8"); response.getWriter().write(json.toString()); } catch (Exception e1) { } } }
到此,關(guān)于“springboot框架的全局異常怎么處理”的學(xué)習(xí)就結(jié)束了,希望能夠解決大家的疑惑。理論與實踐的搭配能更好的幫助大家學(xué)習(xí),快去試試吧!若想繼續(xù)學(xué)習(xí)更多相關(guān)知識,請繼續(xù)關(guān)注億速云網(wǎng)站,小編會繼續(xù)努力為大家?guī)砀鄬嵱玫奈恼拢?/p>
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