Question

我有一个字符串：

Expected attribute value 'internalClosureRule' but was 'internalClosureRule2' - comparing <Option name="internalClosureRule"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name to <Option name="internalClosureRule2"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name,
Expected attribute value 'opt_cpd_p2s_skip' but was 'opt_cpd_p2s_skip2' - comparing <Option name="internalClosureRule"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name to <Option name="internalClosureRule2"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name

我想从第一个“ to”中删除“ Value”，直到第一个逗号（，），然后对字符串中“，”分隔的值使用相同的模式，即我想将我的字符串打印在单独的行中，该行没有“ to”，直到其“，”逗号都在末尾。

我的预期输出是：

Expected attribute value 'internalClosureRule' but was 'internalClosureRule2' - comparing <Option name="internalClosureRule"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name,
Expected attribute value 'opt_cpd_p2s_skip' but was 'opt_cpd_p2s_skip2' - comparing <Option name="internalClosureRule"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name,

有人可以提供帮助吗？

Answer 1

实现该目标的一种方法是使用带有正则表达式的String#replaceAll方法并将其替换为空字符串（""）。就您而言，这种模式很容易，而且很容易

to.*,

其中：

to->表示“至”字。

.*->任意字符

,->逗号

    @Test
    public void fromFirstToTillComma()
    {
        String string = "Expected attribute value 'internalClosureRule' but was 'internalClosureRule2' - comparing <Option name=\"internalClosureRule\"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name to <Option name=\"internalClosureRule2\"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name,";
        String expected = "Expected attribute value 'internalClosureRule' but was 'internalClosureRule2' - comparing <Option name=\"internalClosureRule\"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name,";
        string = string.replaceAll("to.*,", "").trim();
        string += ",";
        assertEquals(expected, string);
    }

有关Pattern的更多信息，请参见here.

评论后： 与其同时处理所有值，不如通过用逗号分割值，将问题分割成较小的值。然后，您将每个值分开，并且可以使用我的正则表达式。最后，再次将值加起来并用逗号分隔。

代码：

@Test
public void fromFirstToTillComma() {
    String string = "Expected attribute value 'internalClosureRule' but was 'internalClosureRule2' - comparing <Option name=\"internalClosureRule\"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name to <Option name=\"internalClosureRule2\"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name,"
            + "Expected attribute value 'opt_cpd_p2s_skip' but was 'opt_cpd_p2s_skip2' - comparing <Option name=\"internalClosureRule\"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name to <Option name=\"internalClosureRule2\"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name,";
    String expected = "Expected attribute value 'internalClosureRule' but was 'internalClosureRule2' - comparing <Option name=\"internalClosureRule\"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name,"
            + "Expected attribute value 'opt_cpd_p2s_skip' but was 'opt_cpd_p2s_skip2' - comparing <Option name=\"internalClosureRule\"...> at /TCXML[1]/Header[1]/TransferFormula[1]/OptionSet[1]/Option[1]/@name,";

    String lines[] = string.split(",");
    StringBuilder sb = new StringBuilder();
    for (String line : lines) {
        line += ","; //Add the comma at the end because string.split(",") removed it
        line = line.replaceAll("to.*,", "").trim();
        sb.append(line);
        sb.append(","); //Each value separated with comma
    }
    String clear = sb.toString().trim();
    assertEquals(expected, clear);
}

如何从Java中的字符串的第一个“ to”到第一个逗号（，）删除值

1 个答案: