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1¡¢Èç¹ûÓÃ"."×÷Ϊ·Ö¸ôµÄ»°£¬±ØÐëÊÇÈçÏÂд·¨£ºString.split("\\."),ÕâÑù²ÅÄÜÕýÈ·µÄ·Ö¸ô¿ª£¬²»ÄÜÓÃString.split(".");
2¡¢Èç¹ûÓÃ"|"×÷Ϊ·Ö¸ôµÄ»°£¬±ØÐëÊÇÈçÏÂд·¨£ºString.split("\\|"),ÕâÑù²ÅÄÜÕýÈ·µÄ·Ö¸ô¿ª£¬²»ÄÜÓÃString.split("|");
"."ºÍ"|"¶¼ÊÇתÒå×Ö·û£¬±ØÐëµÃ¼Ó"\\";
3¡¢Èç¹ûÔÚÒ»¸ö×Ö·û´®ÖÐÓжà¸ö·Ö¸ô·û£¬¿ÉÒÔÓÃ"|"×÷ΪÁ¬×Ö·û£¬±ÈÈ磺"acount=? and uu =? or n=?",°ÑÈý¸ö¶¼·Ö¸ô³öÀ´£¬¿ÉÒÔÓÃString.split("and|or");
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²ÎÊýregexÊÇÒ»¸ö regular-expression(ÕýÔò±í´ïʽ)µÄÆ¥Åäģʽ¶ø²»ÊÇÒ»¸ö¼òµ¥µÄString£¬Ëû¶ÔÒ»Ð©ÌØÊâµÄ×Ö·û¿ÉÄÜ»á³öÏÖÄãÔ¤Ïë²»µ½µÄ½á¹û£¬±ÈÈç²âÊÔÏÂÃæµÄ´úÂ룺
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    String[] aa = "aaa|bbb|ccc".split("|");
    //String[] aa = "aaa|bbb|ccc".split("\\|"); ÕâÑù²ÅÄܵõ½ÕýÈ·µÄ½á¹û
    for (int i = 0 ; i <aa.length ; i++ ) {
      System.out.println("--"+aa[i]); 
    }
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    String[] aa = "aaa*bbb*ccc".split("*");
    //String[] aa = "aaa|bbb|ccc".split("\\*"); ÕâÑù²ÅÄܵõ½ÕýÈ·µÄ½á¹û   
    for (int i = 0 ; i <aa.length ; i++ ) {
      System.out.println("--"+aa[i]); 
    }
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"|" ·Ö¸ô´®Ê±ËäÈ»Äܹ»Ö´ÐУ¬µ«ÊÇÈ´²»ÊÇÔ¤ÆÚµÄÄ¿µÄ£¬"\\|"תÒåºó¼´¿ÉµÃµ½ÕýÈ·µÄ½á¹û¡£
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String[] aa = "aaa\\bbb\\bccc".split("\\\\");


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