@Internal public interface POILogger
-Dorg.apache.poi.util.POILogger=org.apache.poi.util.SystemOutLogger
The following Logger-implementations are provided:
Modifier and Type | Field and Description |
---|---|
static int |
DEBUG |
static int |
ERROR |
static int |
FATAL |
static int |
INFO |
static int |
WARN |
Modifier and Type | Method and Description |
---|---|
void |
_log(int level, java.lang.Object obj1)
Log a message - belongs to the SPI, usually not called from user code
(记录消息 - 属于 SPI,通常不从用户代码调用)
|
void |
_log(int level, java.lang.Object obj1, java.lang.Throwable exception)
Log a message - belongs to the SPI, usually not called from user code
(记录消息 - 属于 SPI,通常不从用户代码调用)
|
boolean |
check(int level)
Check if a logger is enabled to log at the specified level This allows code to avoid building strings or evaluating functions in the arguments to log.
(检查是否启用了记录器以在指定级别记录这允许代码避免在要记录的参数中构建字符串或评估函数。)
|
void |
initialize(java.lang.String cat)
Initialize the Logger - belongs to the SPI, called from the POILogFactory
(初始化 Logger - 属于 SPI,从 POILogFactory 调用)
|
default void |
log(int level, java.lang.Object... objs)
Log a message.
(记录一条消息。)
|
static final int DEBUG
static final int INFO
static final int WARN
static final int ERROR
static final int FATAL
void initialize(java.lang.String cat)
cat
- the String that defines the log
(cat - 定义日志的字符串)
@Internal void _log(int level, java.lang.Object obj1)
level
- One of DEBUG, INFO, WARN, ERROR, FATAL
(level - DEBUG、INFO、WARN、ERROR、FATAL 之一)
obj1
- The object to log. This is converted to a string.
(obj1 - 要记录的对象。这将转换为字符串。)
@Internal void _log(int level, java.lang.Object obj1, java.lang.Throwable exception)
level
- One of DEBUG, INFO, WARN, ERROR, FATAL
(level - DEBUG、INFO、WARN、ERROR、FATAL 之一)
obj1
- The object to log. This is converted to a string.
(obj1 - 要记录的对象。这将转换为字符串。)
exception
- An exception to be logged
(exception - 要记录的异常)
boolean check(int level)
if (logger.check(POILogger.INFO)) {
logger.log(POILogger.INFO, "Avoid concatenating ", " strings and evaluating ", functions());
}
(检查是否启用了记录器以在指定级别记录这允许代码避免在要记录的参数中构建字符串或评估函数。一个例子: if (logger.check(POILogger.INFO)) { logger.log(POILogger.INFO, "避免连接", "字符串和评估", functions()); })
level
- One of DEBUG, INFO, WARN, ERROR, FATAL
(level - DEBUG、INFO、WARN、ERROR、FATAL 之一)
default void log(int level, java.lang.Object... objs)
Throwable
it is logged specially.
(记录一条消息。懒惰地将对象参数附加在一起。如果最后一个参数是 Throwable,则专门记录它。)
level
- One of DEBUG, INFO, WARN, ERROR, FATAL
(level - DEBUG、INFO、WARN、ERROR、FATAL 之一)
objs
- the objects to place in the message
(objs - 放置在消息中的对象)
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