有时候我们在写程序时，会因为计算公式不符合算术表达式，计算公式的字段值不是纯数值等等问题造成程序dump，这个时候我们在无法避免字段赋值错误的情况下，又不想程序dump可以采取catch异常的方法进行避免：
然后在程序中做catch处理，便能避免造成dump了
DATA:lv_cs TYPE c LENGTH 4,
lv_bcs TYPE i,
lv_err_text TYPE string,
* lr_error TYPE REF TO cx_sy_conversion_no_number,
lr_error TYPE REF TO cx_root,
lv_cj TYPE i.
DO 2 TIMES.
CASE sy-index.
WHEN 1.
lv_cs = '12,'.
lv_bcs = '5'.
WHEN 2.
lv_cs = '12'.
lv_bcs = '5'.
WHEN OTHERS.
ENDCASE.
TRY.
lv_cj = lv_cs * lv_bcs.
CLEAR lv_err_text.
* CATCH cx_sy_conversion_no_number INTO lr_error.
CATCH cx_root INTO lr_error.
lv_err_text = lr_error->get_text( ).
ENDTRY.
IF lv_err_text IS NOT INITIAL.
MESSAGE s000(oo) WITH lv_err_text DISPLAY LIKE 'E'.
WRITE:/ lv_err_text.
ELSE.
WRITE:/ '执行成功'.
ENDIF.
ENDDO.
执行结果：
异常类超类CX_ROOT树状图：
CX_ROOT
|
|--CX_STATIC_CHECK
|
|--CX_DYNAMIC_CHECK
| |
| |--CX_SY_ARITHMETIC_ERROR
| | |
| | |--CX_SY_ZERODIVIDE
| | |
| | |--CX_SY_ARITHMETIC_OVERFLOW
| | |
| | |--CX_SY_ARG_OUT_OF_DOMAIN
| | |
| | |--CX_SY_PRECISION_LOSS
| |
| |--CX_SY_ASSIGN_ERROR
| | |
| | |--CX_SY_ASSIGN_CAST_ERROR
| | | |
| | | |--CX_SY_ASSIGN_CAST_ILLEGAL_CAST
| | | |
| | | |--CX_SY_ASSIGN_CAST_UNKNOWN_TYPE
| | |
| | |--CX_SY_ASSIGN_OUT_OF_RANGE
| |
| |--CX_SY_CODEPAGE_CONVERTER_INIT
| |
| |--CX_SY_CONVERSION_ERROR
| | |
| | |--CX_SY_CONVERSION_CODEPAGE
| | |
| | |--CX_SY_CONVERSION_CODEPAGE_EX
| | |
| | |--CX_SY_CONVERSION_DATA_LOSS
| | |
| | |--CX_SY_CONVERSION_EXACT_NOT_SUP
| | |
| | |--CX_SY_CONVERSION_INEXACT_FLTP
| | |
| | |--CX_SY_CONVERSION_NO_BOOLEAN
| | |
| | |--CX_SY_CONVERSION_NO_DATE_TIME
| | |
| | |--CX_SY_CONVERSION_NO_NUMBER
| | |
| | |--CX_SY_CONVERSION_NO_QNAME
| | |
| | |--CX_SY_CONVERSION_NO_RAW
| | |
| | |--CX_SY_CONVERSION_NO_TIME
| | |
| | |--CX_SY_CONVERSION_NO_UUID
| | |
| | |--CX_SY_CONVERSION_OVERFLOW
| | |
| | |--CX_SY_CONVERSION_ROUNDING
| | |
| | |--CX_SY_CONVERSION_SRC_TOO_SHORT
| | |
| | |--CX_SY_CONVERSION_UNKNOWN_LANGU
| |
| |--CX_SY_CREATE_ERROR
| | |
| | |--CX_SY_CREATE_OBJECT_ERROR
| | |
| | |--CX_SY_CREATE_DATA_ERROR
| |
| |--CX_SY_DATA_ACCESS_ERROR
| | |
| | |--CX_SY_RANGE_OUT_OF_BOUNDS
| | |
| | |--CX_SY_TAB_RANGE_OUT_OF_BOUNDS
| | |
| | |--CX_SY_OFFSET_NOT_ALLOWED
| |
| |--CX_SY_DB_PROCEDURE_CALL
| | |
| | |--CX_SY_DB_PROCEDURE_CONNECTION
| | |
| | |--CX_SY_DB_PROCEDURE_NOT_FOUND
| | |
| | |--CX_SY_DB_PROCEDURE_NOT_SUPP
| | |
| | |--CX_SY_DB_PROCEDURE_OVERFLOW
| | |
| | |--CX_SY_DB_PROCEDURE_PARAMETER
| | |
| | |--CX_SY_DB_PROCEDURE_DYN_IN_OUT
| | |
| | |--CX_SY_DB_PROCEDURE_DYN_MISSING
| | |
| | |--CX_SY_DB_PROCEDURE_DYN_NOT_FND
| | |
| | |--CX_SY_DB_PROCEDURE_TYPE_ERROR
| |
| |--CX_SY_DYN_CALL_ERROR
| | |
| | |--CX_SY_DYN_CALL_ILLEGAL_CLASS
| | |
| | |--CX_SY_DYN_CALL_ILLEGAL_FORM
| | |
| | |--CX_SY_DYN_CALL_ILLEGAL_FUNC
| | |
| | |--CX_SY_DYN_CALL_ILLEGAL_METHOD
| | |
| | |--CX_SY_DYN_CALL_PARAMETER_ERROR
| | |
| | |--CX_SY_DYN_CALL_EXCP_NOT_FOUND
| | |
| | |--CX_SY_DYN_CALL_ILLEGAL_TYPE
| | |
| | |--CX_SY_DYN_CALL_PARAM_MISSING
| | |
| | |--CX_SY_DYN_CALL_PARAM_NOT_FOUND
| |
| |--CX_SY_EXPORT_NO_SHARED_MEMORY
| |
| |--CX_SY_FILE_ACCESS_ERROR
| | |
| | |--CX_SY_FILE_AUTHORITY
| | |
| | |--CX_SY_FILE_CLOSE
| | |
| | |--CX_SY_FILE_IO
| | |
| | |--CX_SY_FILE_OPEN
| | |
| | |--CX_SY_FILE_OPEN_MODE
| | |
| | |--CX_SY_FILE_POSITION
| | |
| | |--CX_SY_FILE_TRUNCATE
| |
| |--CX_SY_FIND_INFINITE_LOOP
| |
| |--CX_SY_GEN_SOURCE_TOO_WIDE
| |
| |--CX_SY_IMPORT_MISMATCH_ERROR
| | |
| | |--CX_SY_IMPORT_FORMAT_ERROR
| |
| |--CX_SY_ITAB_ERROR
| | |
| | |--CX_SY_ITAB_DUPLICATE_KEY
| | |
| | |--CX_SY_ITAB_DYN_LOOP
| | |
| | |--CX_SY_ITAB_LINE_NOT_FOUND
| |
| |--CX_SY_MATCHER
| | |
| | |--CX_SY_REGEX_TOO_COMPLEX
| | |
| | |--CX_SY_INVALID_REGEX_FORMAT
| |
| |--CX_SY_MOVE_CAST_ERROR
| |
| |--CX_SY_PROGRAM_NOT_FOUND
| |
| |--CX_SY_PROVIDE_EXCEPTION
| | |
| | |--CX_SY_PROVIDE_INTERVAL_OVERLAP
| | |
| | |--CX_SY_PROVIDE_TABLE_NOT_SORTED
| |
| |--CX_SY_READ_SRC_LINE_TOO_LONG
| |
| |--CX_SY_REF_IS_INITIAL
| |
| |--CX_SY_REGEX
| | |
| | |--CX_SY_INVALID_REGEX
| |
| |--CX_SY_REPLACE_INFINITE_LOOP
| |
| |--CX_SY_SCAN_SOURCE_TOO_WIDE
| |
| |--CX_SY_SQL_ERROR
| | |
| | |--CX_SY_DB_PROCEDURE
| | | |
| | | |--CX_SY_DB_PROCEDURE_SQL_ERROR
| | |
| | |--CX_SY_EXPIMP_DB_SQL_ERROR
| | |
| | |--CX_SY_OPEN_SQL_ERROR
| | | |
| | | |--CX_SY_OPEN_SQL_DB
| | | |
| | | |--CX_SY_DYNAMIC_OSQL_ERROR
| | | | |
| | | | |--CX_SY_DYNAMIC_OSQL_SEMANTICS
| | | | |
| | | | |--CX_SY_DYNAMIC_OSQL_SYNTAX
| | | |
| | | |--CX_SY_SQL_UNSUPPORTED_FEATURE
| | |
| | |--CX_SY_NATIVE_SQL_ERROR
| |
| |--CX_SY_UNKNOWN_CURRENCY
| |
| |--CX_SY_WRITE_INVALID_STYLE
| |
| |--CX_SY_WRITE_SRC_LINE_TOO_LONG
| |
| |--CX_TRANSFORMATION_ERROR
| |
| |--CX_ST_ERROR
| | |
| | |--CX_ST_CALL_ERROR
| | |
| | |--CX_ST_CALL_METHOD_ERROR
| | |
| | |--CX_ST_CONSTRAINT_ERROR
| | |
| | |--CX_ST_CONDITION
| | |
| | |--CX_ST_DESERIALIZATION_ERROR
| | |
| | |--CX_ST_FORMAT_ERROR
| | |
| | |--CX_ST_INVALID_XML
| | |
| | |--CX_ST_MATCH
| | |
| | |--CX_ST_REF_ACCESS
| | |
| | |--CX_ST_RUNTIME_ERROR
| | |
| | |--CX_ST_SERIALIZATION_ERROR
| |
| |--CX_XSLT_EXCEPTION
| |
| |--CX_XSLT_SYSTEM_ERROR
| |
| |--CX_XSLT_ABAP_CALL_ERROR
| |
| |--CX_XSLT_DESERIALIZATION_ERROR
| |
| |--CX_XSLT_FORMAT_ERROR
| |
| |--CX_XSLT_RUNTIME_ERROR
| |
| |--CX_XSLT_SERIALIZATION_ERROR
| |
| |--CX_SY_TRANS_OPTION_ERROR
|
|--CX_NO_CHECK
|
|--CX_BADI
| |
| |--CX_BADI_CONTEXT_ERROR
| |
| |--CX_BADI_FILTER_ERROR
| |
| |--CX_BADI_INITIAL_CONTEXT
| |
| |--CX_BADI_INITIAL_REFERENCE
| |
| |--CX_BADI_NOT_SINGLE_USE
| | |
| | |--CX_BADI_MULTIPLY_IMPLEMENTED
| | |
| | |--CX_BADI_NOT_IMPLEMENTED
| |
| |--CX_BADI_UNKNOWN_ERROR
|
|--CX_SY_AUTHORIZATION_ERROR
|
|--CX_SY_EXPORT_BUFFER_NO_MEMORY
|
|--CX_SY_GENERATE_SUBPOOL_FULL
|
|--CX_SY_ILLEGAL_HANDLER
|
|--CX_SY_LOCALIZATION_ERROR
|
|--CX_SY_NESTED_PRINT_ON
|
|--CX_SY_NO_HANDLER
|
|--CX_SY_PIPES_NOT_SUPPORTED
|
|--CX_SY_PIPE_REOPEN
|
|--CX_SY_REMOTE_CALL_ERROR
| |
| |--CX_SY_RMC_COMM_FAILURE
| |
| |--CX_SY_RMC_INVALID_STATUS
| |
| |--CX_SY_RMC_SYSTEM_FAILURE
|
|--CX_SY_TOO_MANY_FILES