Java正则表达式从字符串中提取度量值
我正试图从简短、不统一的产品描述中提取数据,以便部分自动化为我公司的在线商店制作产品网页。不幸的是,这些描述并不统一。多亏了这个网站,我对regex有了足够的了解,可以尝试一下 在产品测量方法中,有一个失败的测试Java正则表达式从字符串中提取度量值,java,regex,string,extraction,information-extraction,Java,Regex,String,Extraction,Information Extraction,我正试图从简短、不统一的产品描述中提取数据,以便部分自动化为我公司的在线商店制作产品网页。不幸的是,这些描述并不统一。多亏了这个网站,我对regex有了足够的了解,可以尝试一下 在产品测量方法中,有一个失败的测试 w。本产品为68厘米乘22厘米乘73厘米-- 长:68厘米宽:73厘米高: 但是这个非常相似的测试并没有失败。为什么? x。本产品为68厘米x22厘米x73厘米-- 长:68厘米宽:22厘米高:73厘米 这是测试课。作为一个RegexNoob,我肯定我做的不是很有效率,所以关于效率的建
w。本产品为68厘米乘22厘米乘73厘米--
长:68厘米宽:73厘米高:
但是这个非常相似的测试并没有失败。为什么?
x。本产品为68厘米x22厘米x73厘米--
长:68厘米宽:22厘米高:73厘米
这是测试课。作为一个RegexNoob,我肯定我做的不是很有效率,所以关于效率的建议会很好。如果你能想到其他失败的测试用例,请告诉我
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class TesterClass {
public static final String[] testArray =
{
"a. Dynabrade 4\" Discs 34-333-102",
"b. Mercer 4 Inch Discs",
"c. Mercer 4in Discs",
"d. Carbo CleanAir 6\' Vacuum Tube Attachment",
"e. 4 feet",
"f. 4 Ft",
"g. 4 foot",
"h. Carborundum 2-3/4\" Tape 4 yd Roll 97580",
"i. I want 5 Inches and later 6 Feet",
"j. I don't want this one pyrex 9",
"k. This is 4 Inches x 5 Inches x 6 Feet in Size",
"l. This one is 6 x 5 Inches",
"m. This is 4\" x 5\" x 6\' in size",
"n. Something 4-3/4\" Long",
"o. I don't want 9 xtreme things",
"p. I don't want 9 men",
"q. 674m",
"r. 4 Inches",
"s. 5x8",
"t. P58\"",
"u. 5 x 7",
"v. 6 yards",
"w. This product is 68 cm by 22 cm by 73 cm",
"x. This product is 68 cm x 22 cm x 73 cm"
};
public static final String[] FIELDNAMES = {"Length: ","Width: ","Height: "};
public static final String
MEASURE = "(f(ee)?(oo)?t|in(ch)?(es)?|y(ar)?d(s)?|cm|m|meter(s)?|\"|\')",
MAYBE_MEASURE = MEASURE + "?",
NUMBER = "([0-9\\-/]+)",
X = "[(x)(by)]",
SPACE = "\\s",
MAYBE_SPACE = "\\s?",
SPACE_OR_END = "(\\s|$)",
START = "^",
END = "$",
TAB = "\t";
public static final Pattern
regular = Pattern.compile(NUMBER + MAYBE_SPACE + MEASURE + SPACE_OR_END, Pattern.CASE_INSENSITIVE),
lengthXwidth = Pattern.compile(NUMBER + MAYBE_SPACE + MAYBE_MEASURE + MAYBE_SPACE + X + MAYBE_SPACE + NUMBER + MAYBE_MEASURE, Pattern.CASE_INSENSITIVE),
beforeX = Pattern.compile(NUMBER + MAYBE_SPACE + MAYBE_MEASURE + MAYBE_SPACE + END, Pattern.CASE_INSENSITIVE),
afterX = Pattern.compile(START + MAYBE_SPACE + NUMBER + MAYBE_SPACE + MAYBE_MEASURE, Pattern.CASE_INSENSITIVE),
measure = Pattern.compile(MAYBE_SPACE + MEASURE, Pattern.CASE_INSENSITIVE);
public static void main(String[] args)
{
for (String testString:testArray)
{
String[] fields = {"","",""};
int match = 0;
Matcher lengthXwidthMatcher = lengthXwidth.matcher(testString);
Matcher regularMatcher = regular.matcher(testString);
if (lengthXwidthMatcher.find())
{
String[] split = testString.split(X);
for (int i = 0; i<split.length; i++)
{
Matcher beforeXMatcher = beforeX.matcher(split[i]);
Matcher afterXMatcher = afterX.matcher(split[i]);
if (beforeXMatcher.find() && match==0)
{
fields[0] = beforeXMatcher.group();
match++;
}
if (afterXMatcher.find())
{
if (match==1)
{
fields[1] = afterXMatcher.group();
match++;
}
else if (match==2)
{
fields[2] = afterXMatcher.group();
match++;
}
}
}
Matcher lengthHasMeasure = measure.matcher(fields[0]);
Matcher widthHasMeasure = measure.matcher(fields[1]);
Matcher heightHasMeasure = measure.matcher(fields[2]);
if (heightHasMeasure.find()==true)
{
if (lengthHasMeasure.find()==false)
{
fields[0] = fields[0] + heightHasMeasure.group();
}
if (widthHasMeasure.find()==false)
{
fields[1] = fields[1] + heightHasMeasure.group();
}
}
else if (widthHasMeasure.find()==true)
{
if (lengthHasMeasure.find()==false)
{
fields[0] = fields[0] + widthHasMeasure.group();
}
}
}
else if(regularMatcher.find())
{
fields[0] = regularMatcher.group();
match++;
while (regularMatcher.find() && match<3)
{
fields[match] = regularMatcher.group();
}
}
System.out.println(testString + " -- " + TAB + FIELDNAMES[0] + fields[0] + TAB + FIELDNAMES[1] + fields[1] + TAB + FIELDNAMES[2] + fields[2]);
}
}
}
import java.util.regex.Matcher;
导入java.util.regex.Pattern;
公共类测试类{
公共静态最终字符串[]testArray=
{
“a.Dynabrade 4 \”光盘34-333-102“,
“b.美世4英寸光盘”,
“c.美世4英寸光盘”,
“d.Carbo CleanAir 6\'真空管附件”,
“e.4英尺”,
“f.4英尺”,
“g.4英尺”,
“h.碳化硅2-3/4 \”胶带4码卷97580”,
“i.我想要5英寸,然后是6英尺”,
“j.我不想要这个pyrex 9”,
“k.这是4英寸x 5英寸x 6英尺的尺寸”,
“l.这个是6 x 5英寸”,
“m.这是4\'x5\'x6\'的尺寸”,
“4-3/4”长的东西,
“哦,我不想要9件极端的东西”,
“p.我不想要9个人”,
“问题6.74亿”,
“r.4英寸”,
“s.5x8”,
“t.P58\”,
“u.5 x 7”,
“六码”,
“w.本产品为68厘米乘22厘米乘73厘米”,
“x.本产品为68厘米x22厘米x73厘米”
};
公共静态最终字符串[]字段名={“长度:”、“宽度:”、“高度:”};
公共静态最终字符串
MEASURE=“(f(ee)?(oo)?t|in(ch)?(es)??y(ar)?d(s)??cm?m?米)??\”,
也许_MEASURE=MEASURE+“?”,
NUMBER=“([0-9\\-/])”,
X=“[(X)(通过)]”,
空格=“\\s”,
可能是\u SPACE=“\\s?”,
空格_或_END=“(\\s |$)”,
START=“^”,
END=“$”,
TAB=“\t”;
公共静态最终模式
regular=Pattern.compile(数字+可能是空格+度量+空格或结尾,Pattern.CASE不区分大小写),
lengthXwidth=Pattern.compile(数字+可能大小写+可能大小写+可能大小写+可能大小写+X+可能大小写+可能大小写+数字+可能大小写,Pattern.CASE不区分大小写),
beforeX=Pattern.compile(NUMBER+MAYBE\u SPACE+MAYBE\u MEASURE+MAYBE\u SPACE+END,Pattern.CASE\u不区分大小写),
afterX=Pattern.compile(START+MAYBE\u SPACE+NUMBER+MAYBE\u SPACE+MAYBE\u MEASURE,Pattern.CASE\u不区分大小写),
measure=Pattern.compile(可能是空间+度量,Pattern.CASE不区分大小写);
公共静态void main(字符串[]args)
{
用于(字符串testString:testArray)
{
字符串[]字段={“”,“”};
int匹配=0;
匹配器lengthXwidthMatcher=lengthXwidth.Matcher(测试字符串);
Matcher regularMatcher=regular.Matcher(testString);
if(lengthXwidthMatcher.find())
{
String[]split=testString.split(X);
对于(int i=0;i,您的X
产品似乎被指定为字符类,而不是替代品。请尝试:
X = "(x|by)"