ÀϹÝÀûÀ¸·Î ½ºÇÁ¸µ ȯ°æ¿¡¼ properties °ªÀ» ·ÎµùÇÒ ¶§, ¾Æ·¡¿Í °°Àº ¹æ¹ýÀ» »ç¿ëÇÒ °ÍÀÌ´Ù.
¡Ü config/config.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://my-host:3306/mydb?autoReconnect=true&useSSL=false
jdbc.username=ENC(KZ5LcGGqo3ZWEfiC5ogN/fJZ5bER==)
jdbc.password=ENC(ZbQiphS2ikjiSrtF7GSSSEC05wWG==)
¡Ü context-settings.xml
¹°·Ð properties °ªÀ» °¡Á®¿Ã ¼ö ÀÖ´Â ¹æ¹ýÀº À§¿Í °°Àº ¹æ¹ý ¸»°íµµ ¸Å¿ì ´Ù¾çÇÑ ¹æ¹ýÀÌ ÀÖ´Ù.
1) spring namcespace ¸¦ ÅëÇÑ ¼³Á¤
2) ´Ù¸¥ Helper Class »ç¿ë.
3) Annotation »ç¿ë.
µîµî...
´Ù¸¥ »ç¶÷ÀÌ ÀÌ¹Ì ±¸¼ºÇØ ³õÀº ¼³Á¤¿¡¼ Á¦´ë·Î ÇßÀ½¿¡µµ ºÒ±¸ÇÏ°í,
¾îÇø®ÄÉÀÌ¼Ç ±âµ¿½Ã Could not resolve placeholder ... 'jdbc.driver' ¿À·ù·Î ÀÎÇØ ±âµ¿ÀÌ ½ÇÆÐÇÑ´Ù¸é ¾Æ·¡ »çÇ×À» È®ÀÎÇÏÀÚ.
1) Maven Ç¥ÁØ µð·ºÅ丮 ±¸Á¶ÀÇ resource µð·ºÅ丮 (src/main/resource) ¾È¿¡ config/config.properties ÆÄÀÏÀÌ Á¸ÀçÇÏ´ÂÁö.
https://maven.apache.org/guides/introduction/introduction-to-the-standard-directory-layout.html
-> ¹°·Ð ÀÌ´Â pom.xml resourceDirectory ¼³Á¤À¸·Î º¯°æ °¡´ÉÇÏ´Ù.
2) PropertyPlaceholderConfigurer ¼³Á¤ÀÌ 2°³ ÀÌ»ó Á¸ÀçÇÏ´ÂÁö
- 2°³ ÀÌ»ó Á¸ÀçÇÏ´Â °æ¿ì¿¡´Â °¢ ¼³Á¤¿¡ ¾Æ·¡¿Í °°ÀÌ ignoreUnresolvablePlaceholders ÇÁ·ÎÆÛƼ¸¦ ¼³Á¤ÇØ ÁÖ¾î¾ß ÇÑ´Ù.
´Ù¸¥ »ç¶÷ÀÌ ±¸¼ºÇØ ³õÀº ¼³Á¤À» ¼öÁ¤ÇÏ´Â µµÁß Could not resolve placeholder ¿À·ù·Î 1½Ã°£ °¡·® »ðÁúÀ» ÇÑ °æÇèÀÌ Àִµ¥,
2) ¹ø°ú °°Àº °æ¿ì ¶§¹®¿¡ ¹®Á¦°¡ µÆ¾ú´ø ÀûÀÌ ÀÖ¾ú´Ù.
Âü°í·Î, ´Ù¸¥ ¼³Á¤Àº PropertyPlaceholderConfigurer Helper Ŭ·¡½º¸¦ »ç¿ëÇÏÁö ¾Ê°í ´Ù¸¥ Helper Ŭ·¡½º¸¦ »ç¿ëÇÒ ¼öµµ ÀÖÀ¸´Ï
ÇÁ·ÎÁ§Æ® °Ë»ö½Ã¿¡´Â Ŭ·¡½º¸í Àüü¸¦ ³ÖÁö ¸»°í placeholder ¿Í °°Àº ¹®ÀÚ¿·Î °Ë»öÇØ¾ß ´Ù¸¥ ¼³Á¤ÀÌ ÀÖ´ÂÁö ¿©ºÎ¸¦ È®ÀÎÇÒ ¼ö ÀÖ´Ù.
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