java報錯資訊在頁面顯示的方法:首先自定義異常類;然後在service層的丟擲異常類,controller類繼承主異常類;接著定義的主異常類,裡面可以寫多個自己定義的異常類;最後完成資訊類程式碼。
java報錯資訊在頁面顯示的方法:
1、自定義異常類
public class ProdProcessOrderException extends RuntimeException { private static final long serialVersionUID = 1L; public ProdProcessOrderException(String message) { super(message); } }
2、service層的程式碼
@Service public class GeneralDpPpOrderServiceImpl implements GeneralDpPpOrderService { public ResponseEntity<byte[]> downLoadExcel(GeneralDpPpOrder generalDpPpOrder) { //......... //省略程式碼 if (pOrderRouting == null) { //此處丟擲異常 throw new ProdProcessOrderException("當前門板流程單沒有設定生產工藝."); } } }
service層的丟擲異常類
3、controller層的程式碼
@RestController @RequestMapping("/api/mes/gene-dp-pp-order") public class GeneralDpPpOrderController extends ExceptionResponse{ //繼承主異常類 @Autowired private GeneralDpPpOrderService generalDpPpOrderService; @RequestMapping(value = "/download-excel", method = RequestMethod.PUT, consumes = "application/json;charset=UTF-8", produces = "application/xls") public ResponseEntity<byte[]> downLoadExcel(@RequestBody GeneralDpPpOrder gdp) { return generalDpPpOrderService.downLoadExcel(gdp); }
controller類繼承主異常類
4、主異常類程式碼
public abstract class ExceptionResponse { @ExceptionHandler(ProdProcessOrderException.class) @ResponseStatus(value = HttpStatus.INTERNAL_SERVER_ERROR) public SystemMessage prodProcessOrderException(ProdProcessOrderException e) { return new SystemMessage(500, e.getMessage()); } }
定義的主異常類,裡面可以寫多個自己定義的異常類
5、資訊類程式碼
public class SystemMessage { private int code; private String message; public SystemMessage(int code, String message) { super(); this.code = code; this.message = message; } public int getCode() { return code; } public void setCode(int code) { this.code = code; } public String getMessage() { return message; } public void setMessage(String message) { this.message = message; }
通過以上五步,就可以把後臺丟擲的異常資訊,在前端頁面顯示了
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