Java 如何使用分隔符分析文本？

可能重复：

我想解析以下数据，以便获得下面指定的输出

输入：

RTRV-ALM-EQPT::ALL:RA01; SIMULATOR 09-11-20 13:52:15 M RA01 COMPLD "SLOT-1-1-1,CMP:MN,T-FANCURRENT-1-HIGH,NSA,01-10-09,00-00-00,,:\"Fan-T\"," "SLOT-1-1-1,CMP:MJ,T-BATTERYPWR-2-LOW,NSA,01-10-09,00-00-00,,:\"Battery-T\"," "SLOT-1-1-2,CMP:CR,PROC_FAIL,SA,09-11-20,13-51-55,,:\"Processor Failure\"," "SLOT-1-1-3,OLC:MN,T-LASERCURR-1-HIGH,SA, 01-10-07,13-21-03,,:\"Laser-T\"," "SLOT-1-1-3,OLC:MJ,T-LASERCURR-2-LOW,NSA, 01-10-02,21-32-11,,:\" Laser-T\"," "SLOT-1-1-4,OLC:MN,T-LASERCURR-1-HIGH,SA,01-10-05,02-14-03,,:\"Laser-T\"," "SLOT-1-1-4,OLC:MJ,T-LASERCURR-2-LOW,NSA,01-10-04,01-03-02,,:\"Laser-T\"," ; RTRV-ALM-EQPT：：全部：RA01； 模拟机09-11-20 13:52:15 M RA01 COMPLD “插槽1-1-1，CMP:MN，T-FANCURRENT-1-HIGH，NSA，01-10-09,00-00-00，，：\“Fan-T\”，” “插槽-1-1-1，CMP:MJ，T-电池PWR-2-低，NSA，01-10-09,00-00-00，，：\“电池-T\”，” “插槽1-1-2，CMP:CR，程序失败，SA，09-11-20,13-51-55，，：“处理器故障” “插槽-1-1-3，OLC:MN，T-LASERCURR-1-HIGH，SA，01-10-07,13-21-03，，：\“激光-T\”，” “插槽1-1-3，OLC:MJ，T-LASERCURR-2-LOW，NSA，01-10-02,21-32-11，，：”激光-T“ “插槽1-1-4，OLC:MN，T-LASERCURR-1-HIGH，SA，01-10-05,02-14-03，，：\“激光-T\”，” “插槽1-1-4，OLC:MJ，T-LASERCURR-2-LOW，NSA，01-10-04,01-03-02，，：\“激光-T\”，” ; 输出：

1) RTRV-ALM-EQPT::ALL:RA01; 2) SIMULATOR 3) 09-11-20 4) 13:52:15 5) M 6) RA01 7) COMPLD 8) "SLOT-1-1-1,CMP:MN,T-FANCURRENT-1-HIGH,NSA,01-10-09,00-00-00,,:\"Fan-T\"," 9) "SLOT-1-1-1,CMP:MJ,T-BATTERYPWR-2-LOW,NSA,01-10-09,00-00-00,,:\"Battery-T\"," 10) "SLOT-1-1-2,CMP:CR,PROC_FAIL,SA,09-11-20,13-51-55,,:\"Processor Failure\"," 11) "SLOT-1-1-3,OLC:MN,T-LASERCURR-1-HIGH,SA, 01-10-07,13-21-03,,:\"Laser-T\"," 12) "SLOT-1-1-3,OLC:MJ,T-LASERCURR-2-LOW,NSA, 01-10-02,21-32-11,,:\" Laser-T\"," 13) "SLOT-1-1-4,OLC:MN,T-LASERCURR-1-HIGH,SA,01-10-05,02-14-03,,:\"Laser-T\"," 14) "SLOT-1-1-4,OLC:MJ,T-LASERCURR-2-LOW,NSA,01-10-04,01-03-02,,:\"Laser-T\"," 1） RTRV-ALM-EQPT：：全部：RA01； 2） 模拟机 3) 09-11-20 4) 13:52:15 5） M 6） RA01 7） 康普尔德 8） “插槽1-1-1，CMP:MN，T-FANCURRENT-1-HIGH，NSA，01-10-09,00-00-00，，：\“Fan-T\”，” 9） “插槽-1-1-1，CMP:MJ，T-电池PWR-2-低，NSA，01-10-09,00-00-00，，：\“电池-T\”，” 10） “插槽1-1-2，CMP:CR，程序失败，SA，09-11-20,13-51-55，，：“处理器故障” 11） “插槽-1-1-3，OLC:MN，T-LASERCURR-1-HIGH，SA，01-10-07,13-21-03，，：\“激光-T\”，” 12） “插槽1-1-3，OLC:MJ，T-LASERCURR-2-LOW，NSA，01-10-02,21-32-11，，：”激光-T“ 13） “插槽1-1-4，OLC:MN，T-LASERCURR-1-HIGH，SA，01-10-05,02-14-03，，：\“激光-T\”，” 14） “插槽1-1-4，OLC:MJ，T-LASERCURR-2-LOW，NSA，01-10-04,01-03-02，，：\“激光-T\”，”

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要解析任何输入，必须了解其结构

前四行是否始终存在

这四行的格式是什么

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最好的方法可能是不要考虑将第一个文本转换为第二个文本

相反，可以考虑首先将第一个文本解析为一组表示它们实际是什么的Java对象。例如，输入的第二行/第三行可能由带有“区域”、“日期”和“时间”属性的

Test

类表示。（只有你才能根据你对一切含义的了解，提出一个合理的模型）

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然后，一旦获得了对文件信息的良好的内存表示，就可以考虑在第二种情况下打印到文本。现在只打印Java对象中的各种字段和属性应该很容易，而不是试图动态转换输入文本。

假设文件相对较小，因此可以读入内存。试着这样做：

public class Main { 
    public static void main(String[] args) {
        String text = "RTRV-ALM-EQPT::ALL:RA01;\n"+
            "\n"+
            "   SIMULATOR 09-11-20 13:52:15\n"+
            "M  RA01 COMPLD\n"+
            "   \"SLOT-1-1-1,CMP:MN,T-FANCURRENT-1-HIGH,NSA,01-10-09,00-00-00,,:\\\"Fan-T\\\",\"\n"+
            "   \"SLOT-1-1-1,CMP:MJ,T-BATTERYPWR-2-LOW,NSA,01-10-09,00-00-00,,:\\\"Battery-T\\\",\"\n"+
            "   \"SLOT-1-1-2,CMP:CR,PROC_FAIL,SA,09-11-20,13-51-55,,:\\\"Processor Failure\\\",\"\n"+
            "   \"SLOT-1-1-3,OLC:MN,T-LASERCURR-1-HIGH,SA, 01-10-07,13-21-03,,:\\\"Laser-T\\\",\"\n"+
            "   \"SLOT-1-1-3,OLC:MJ,T-LASERCURR-2-LOW,NSA, 01-10-02,21-32-11,,:\\\" Laser-T\\\",\"\n"+
            "   \"SLOT-1-1-4,OLC:MN,T-LASERCURR-1-HIGH,SA,01-10-05,02-14-03,,:\\\"Laser-T\\\",\"\n"+
            "   \"SLOT-1-1-4,OLC:MJ,T-LASERCURR-2-LOW,NSA,01-10-04,01-03-02,,:\\\"Laser-T\\\",\"\n"+
            ";";
        Matcher m = Pattern.compile("\"(?:\\\\.|[^\\\"])*\"|\\S+").matcher(text);
        int n = 0;
        while(m.find()) {
            System.out.println((++n)+") "+m.group());
        }
    }
}

"(?:\\.|[^\\"])*"|\S+

输出：

1) RTRV-ALM-EQPT::ALL:RA01;
2) SIMULATOR
3) 09-11-20
4) 13:52:15
5) M
6) RA01
7) COMPLD
8) "SLOT-1-1-1,CMP:MN,T-FANCURRENT-1-HIGH,NSA,01-10-09,00-00-00,,:\"Fan-T\","
9) "SLOT-1-1-1,CMP:MJ,T-BATTERYPWR-2-LOW,NSA,01-10-09,00-00-00,,:\"Battery-T\","
10) "SLOT-1-1-2,CMP:CR,PROC_FAIL,SA,09-11-20,13-51-55,,:\"Processor Failure\","
11) "SLOT-1-1-3,OLC:MN,T-LASERCURR-1-HIGH,SA, 01-10-07,13-21-03,,:\"Laser-T\","
12) "SLOT-1-1-3,OLC:MJ,T-LASERCURR-2-LOW,NSA, 01-10-02,21-32-11,,:\" Laser-T\","
13) "SLOT-1-1-4,OLC:MN,T-LASERCURR-1-HIGH,SA,01-10-05,02-14-03,,:\"Laser-T\","
14) "SLOT-1-1-4,OLC:MJ,T-LASERCURR-2-LOW,NSA,01-10-04,01-03-02,,:\"Laser-T\","
15) ;

唯一的区别是有第15个匹配项：

，我相信你忘了

原始正则表达式（没有所有转义）如下所示：

public class Main { 
    public static void main(String[] args) {
        String text = "RTRV-ALM-EQPT::ALL:RA01;\n"+
            "\n"+
            "   SIMULATOR 09-11-20 13:52:15\n"+
            "M  RA01 COMPLD\n"+
            "   \"SLOT-1-1-1,CMP:MN,T-FANCURRENT-1-HIGH,NSA,01-10-09,00-00-00,,:\\\"Fan-T\\\",\"\n"+
            "   \"SLOT-1-1-1,CMP:MJ,T-BATTERYPWR-2-LOW,NSA,01-10-09,00-00-00,,:\\\"Battery-T\\\",\"\n"+
            "   \"SLOT-1-1-2,CMP:CR,PROC_FAIL,SA,09-11-20,13-51-55,,:\\\"Processor Failure\\\",\"\n"+
            "   \"SLOT-1-1-3,OLC:MN,T-LASERCURR-1-HIGH,SA, 01-10-07,13-21-03,,:\\\"Laser-T\\\",\"\n"+
            "   \"SLOT-1-1-3,OLC:MJ,T-LASERCURR-2-LOW,NSA, 01-10-02,21-32-11,,:\\\" Laser-T\\\",\"\n"+
            "   \"SLOT-1-1-4,OLC:MN,T-LASERCURR-1-HIGH,SA,01-10-05,02-14-03,,:\\\"Laser-T\\\",\"\n"+
            "   \"SLOT-1-1-4,OLC:MJ,T-LASERCURR-2-LOW,NSA,01-10-04,01-03-02,,:\\\"Laser-T\\\",\"\n"+
            ";";
        Matcher m = Pattern.compile("\"(?:\\\\.|[^\\\"])*\"|\\S+").matcher(text);
        int n = 0;
        while(m.find()) {
            System.out.println((++n)+") "+m.group());
        }
    }
}

"(?:\\.|[^\\"])*"|\S+

和匹配项：

"          # match a double quote
(?:        # open non matching group 1
  \\.      #   match a backslash followed by any char (except line breaks)
  |        #   OR
  [^\\"]   #   match any char except a backslash and a double quote
)*         # close non matching group 1 and repeat it zero or more times
"          # match a double quote
|          # OR
\S+        # match one or more characters other than white space chars

换句话说：匹配一个带引号的字符串或匹配一个仅由非空格字符组成的单词。
因此，除了引号中可能包含带引号的空格外，您还可以使用空格？我想这是第三次问这个问题了。这是家庭作业还是什么？