Log4j.properties配置文件实例
#1 定义了三个输出端
log4j.rootLogger = INFO, A1,A2,A3
#2 定义A1输出到控制器，输出到控制台
log4j.appender.A1 = org.apache.log4j.ConsoleAppender
#3 定义A1的布局模式为PatternLayout
log4j.appender.A1.layout = org.apache.log4j.PatternLayout
#4 定义A1的输出格式
log4j.appender.A1.layout.ConversionPattern = %-4r [%t] %-5p %c - %m%n
#5 定义A2输出到文件
log4j.appender.A2 = org.apache.log4j.RollingFileAppender
#6 定义A2要输出到哪一个文件
log4j.appender.A2.File = c:\\example3.log
#7 定义A2的输出文件的最大长度
log4j.appender.A2.MaxFileSize = 1KB
#8 定义A2的备份文件数
log4j.appender.A2.MaxBackupIndex = 3
#9 定义A2的布局模式为PatternLayout
log4j.appender.A2.layout = org.apache.log4j.PatternLayout
#10 定义A2的输出格式
log4j.appender.A2.layout.ConversionPattern = %d{yyyy-MM-dd hh:mm:ss}:%p %t %c - %m%n
#11区 定义A3输出到数据库
log4j.appender.A3 = org.apache.log4j.jdbc.JDBCAppender
log4j.appender.A3.BufferSize = 40
log4j.appender.A3.Driver = com.microsoft.jdbc.sqlserver.SQLServerDriver
log4j.appender.A3.URL = jdbc:microsoft:sqlserver://zxl;databasename=hmsc;SelectMethod=Cursor
log4j.appender.A3.User =sa
log4j.appender.A3.Password =sa
log4j.appender.A3.layout = org.apache.log4j.PatternLayout
log4j.appender.A3.layout.ConversionPattern = INSERT INTO log4j (createDate, thread, priority, category, message) values(getdate(), '%t', '%-5p', '%c', '%m')
定义输出到数据库时，建表语句：
create table log4j(
logID int primary key identity,
message varchar(1024),
priority varchar(10),
milliseconds int,
category varchar(256),
thread varchar(100),
NDC varchar(256),
createDate datetime,
location varchar(256),
caller varchar(100),
method varchar(100),
filename varchar(100),
line int
)
