Java 中常用异常的统计

<tty> 异常的统计过程 

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pwd /home/trydofor/java mkdir java6-src/ cd java6-src/ unzip ../src.zip cd .. unzip spring-framework-3.0.0.RELEASE-with-docs.zip mv spring3-src/spring-framework-3.0.0.RELEASE spring3-src ll drwxrwxr-x 2 trydofor trydofor 4096 Dec 19 09:22 java6-src drwxrwxr-x 2 trydofor trydofor 4096 Dec 19 09:23 spring3-src -rw-rw-r-- 1 trydofor trydofor 46699488 Dec 18 09:07 spring-framework-3.0.0.RELEASE-with-docs.zip -rw-rw-r-- 1 trydofor trydofor 19641221 Jul 31 16:30 src.zip find java6-src -name '*.java' |wc -l 7196 find spring3-src/projects/ -name '*.java'|wc -l 4093 #spring3-src/projects/org.springframework.expression/src/main/java/org/ #springframework/expression/common/TemplateAwareExpressionParser.java #这个类是Mac下编写的，需要把 \r换成 \n 才能正确处理，否则整个文件当做一行处理。 find java6-src -name '*.java' |xargs cat | tr '\r' '\n'| grep '[ \t\n]*throw[ \t\n]\+new' > java6.thrown.txt find spring3-src/projects -name '*.java'|xargs cat | tr '\r' '\n'| grep '[ \t\n]*throw[ \t\n]\+new' > spring3.thrown.txt wc -l *.txt 10959 java6.thrown.txt 2994 spring3.thrown.txt 13953 total sed -n 's/.*throw[ \t]\+new[ \t]\+\([^(]\+\).\+/\1/p' java6.thrown.txt | sort |uniq -c | sort -nr >java6.exception.txt sed -n 's/.*throw[ \t]\+new[ \t]\+\([^(]\+\).\+/\1/p' spring3.thrown.txt | sort |uniq -c | sort -nr >spring3.exception.txt head java6.exception.txt 2153 IllegalArgumentException 795 NullPointerException 438 RuntimeException 295 UnsupportedOperationException 291 DOMException 280 IllegalStateException 245 IOException 219 IndexOutOfBoundsException 185 ReadOnlyBufferException 161 InternalError head spring3.exception.txt 574 IllegalStateException 561 IllegalArgumentException 217 UnsupportedOperationException 128 RuntimeException 66 InvalidResultSetAccessException 62 SpelEvaluationException 56 OperationNotSupportedException 55 TransactionSystemException 52 InvalidDataAccessApiUsageException 47 ServletException