java中常用的16个工具类

1. org.apache.commons.io.IOUtils：处理io流的相关操作

• closeQuietly ( )
• toString ( )
• copy ( )
• toByteArray ( )
• write ( )
• toInputStream ( )
• readLines ( )
• copyLarge ( )
• lineIterator ( )
• readFully ( )

2. org.apache.commons.io.FileUtils：处理文件的相关操作

• deleteDirectory ( )
• readFileToString ( )
• deleteQuietly ( )
• copyFile ( )
• writeStringToFile ( )
• forceMkdir ( )
• write ( )
• listFiles ( )
• copyDirectory ( )
• forceDelete ( )

3. org.apache.commons.lang.StringUtils：处理字符串的相关操作

• isBlank ( )
• isNotBlank ( )
• isEmpty ( )
• isNotEmpty ( )
• equals ( )
• join ( )
• split ( )
• EMPTY
• trimToNull ( )
• replace ( )

4. org.apache.http.util.EntityUtils：处理HttpEntity类的静态方法

• toString ( )
• consume ( )
• toByteArray ( )
• consumeQuietly ( )
• getContentCharSet ( )

5. org.apache.commons.lang3.StringUtils：处理字符串的相关方法

• isBlank ( )
• isNotBlank ( )
• isEmpty ( )
• isNotEmpty ( )
• join ( )
• equals ( )
• split ( )
• EMPTY
• replace ( )
• capitalize ( )

6. org.apache.commons.io.FilenameUtils：处理文件名的相关方法

• getExtension ( )
• getBaseName ( )
• getName ( )
• concat ( )
• removeExtension ( )
• normalize ( )
• wildcardMatch ( )
• separatorsToUnix ( )
• getFullPath ( )
• isExtension ( )

7. org.springframework.util.StringUtils：处理字符串的方法

• hasText ( )
• hasLength ( )
• isEmpty ( )
• commaDelimitedListToStringArray ( )
• collectionToDelimitedString ( )
• replace ( )
• delimitedListToStringArray ( )
• uncapitalize ( )
• collectionToCommaDelimitedString ( )
• tokenizeToStringArray ( )

8. org.apache.commons.lang.ArrayUtils：处理数组的方法

• contains ( )
• addAll ( )
• clone ( )
• isEmpty ( )
• add ( )
• EMPTY_BYTE_ARRAY
• subarray ( )
• indexOf ( )
• isEquals ( )
• toObject ( )

9. org.apache.commons.lang.StringEscapeUtils：处理字符串的方法

• escapeHtml ( )
• unescapeHtml ( )
• escapeXml ( )
• escapeSql ( )
• unescapeJava ( )
• escapeJava ( )
• escapeJavaScript ( )
• unescapeXml ( )
• unescapeJavaScript ( )

10. org.apache.http.client.utils.URLEncodedUtils：处理url的方法

• format ( )
• parse ( )

11. org.apache.commons.codec.digest.DigestUtils：消息加密工具方法，消息可以是字符串，io流，字节数组

• md5Hex ( )
• shaHex ( )
• sha256Hex ( )
• sha1Hex ( )
• sha ( )
• md5 ( )
• sha512Hex ( )
• sha1 ( )

12. org.apache.commons.collections.CollectionUtils：集合操作方法

• isEmpty ( )
• isNotEmpty ( )
• select ( )
• transform ( )
• filter ( )
• find ( )
• collect ( )
• forAllDo ( )
• addAll ( )
• isEqualCollection ( )

13. org.apache.commons.lang3.ArrayUtils：数组操作方法

• contains ( )
• isEmpty ( )
• isNotEmpty ( )
• add ( )
• clone ( )
• addAll ( )
• subarray ( )
• indexOf ( )
• EMPTY_OBJECT_ARRAY
• EMPTY_STRING_ARRAY

14. org.apache.commons.beanutils.PropertyUtils：java bean操作方法

• getProperty ( )
• setProperty ( )
• getPropertyDescriptors ( )
• isReadable ( )
• copyProperties ( )
• getPropertyDescriptor ( )
• getSimpleProperty ( )
• isWriteable ( )
• setSimpleProperty ( )
• getPropertyType ( )

15. org.apache.commons.lang3.StringEscapeUtils：字符串转义方法

• unescapeHtml4 ( )
• escapeHtml4 ( )
• escapeXml ( )
• unescapeXml ( )
• escapeJava ( )
• escapeEcmaScript ( )
• unescapeJava ( )
• escapeJson ( )
• escapeXml10 ( )

16. org.apache.commons.beanutils.BeanUtils：java bean操作方法

• copyProperties ( )
• getProperty ( )
• setProperty ( )
• describe ( )
• populate ( )
• copyProperty ( )
• cloneBean ( )

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