我需要将'OR'替换为'||'在给定的字符串中。只有在输入字符串中它本身是一个完整的单词时才应该替换它。此外，如果它出现在引号内，则不应替换它。例如，如果输入字符串是
application.path =“EXCEL.exe”或application.path =“EXCELSIOR.exe”或application.path =“XYZ OR ABC.exe”
输出应为
application.path =“EXCEL.exe”|| application.path =“EXCELSIOR.exe”|| application.path =“XYZ OR ABC.exe”
请注意，EXCELSIOR.exe和“XYZ OR ABC.exe”中的OR不会被替换。
我正在使用的Java代码如下：
String inputStr = "(quote.AGE was 24 AND (application.path = \"**\\acad.exe\" OR application.path = \"**\\dxfdwg.exe\" OR application.path = \"**\\EXCELSIOR.EXE\" OR application.path = \"**\\iges.exe\" OR application.path = \"**\\notepad.exe\" OR application.path = \"**\\run_journal.exe\" OR application.path = \"**\\AcroRd32.exe\" OR application.path = \"**\\dllhost.exe\" OR application.path = \"**\\powerpnt.exe\" OR application.path = \"**\\Edge.exe\" OR application.path = \"**\\step203ug.exe\" OR application.path = \"**\\step214ug.exe\" OR application.path = \"**\\VisView.exe\" OR application.path = \"**\\Teamcenter.exe\" OR application.path = \"**\\ug_convert_part.exe\" OR application.path = \"**\\ugraf.exe\" OR application.path = \"**\\ugtopv.exe\" OR application.path = \"**\\wmplayer.exe\" OR application.path = \"**\\winword.exe\" OR application.path = \"**\\wordpad.exe\" OR application.path = \"**\\vlc.exe\" OR application.path = \"**\\dwgviewr.exe\" OR application.name = \"RMS\" OR application.path = \"**\\acrobat.exe\" OR application.path = \"**\\Alias.exe\" OR application.path = \"**\\awtessd.exe\" OR application.path = \"**\\proe.exe\" OR application.path = \"**\\STPViewer.exe\" OR application.path = \"**\\gom_inspect.exe\" OR application.path = \"**\\gom_cad_server2.exe\" OR application.path = \"**\\sldworks.exe\" OR application.path = \"**\\sldworks_fs.exe\" OR application.path = \"**\\sldProcMon.exe\" OR application.path = \"**\\AdapplicationMgr.exe\" OR application.path = \"**\\AdapplicationMgrSvc.exe\" OR application.path = \"**\\SE3Dtrans.exe\" OR application.path = \"**\\stamp.exe\" OR application.path = \"**\\psolid.exe\" OR application.path = \"**\\mpid.exe\" OR application.path = \"**\\mpirun.exe\" OR application.path = \"**\\FS.exe\" OR application.path = \"**\\xtop.exe\" OR application.path = \"**\\pro_comm_msg.exe\" OR application.path = \"**\\nmsd.exe\" OR application.path = \"**\\creoagent.exe\" OR application.path = \"**\\parametric.exe\" OR application.path = \"**\\PDFEditor.exe\" OR application.path = \"**\\CNEXT.exe\" OR application.path = \"**\\drafter.exe\" OR application.path = \"**\\convert.exe\" OR application.path = \"**\\ActCut3D.exe\" OR application.path = \"**\\ppcbasic.exe\" OR application.path = \"**\\deltamesh_stamping.exe\" OR application.path = \"Xasfsf\" OR application.path = \"sfdsdf\"))";
String replacedStr = inputStr.replaceAll("(?m)\\bOR\\b(?=(?:\"[^\"]*\"|[^\"])*$)", "||");
这适用于较短的字符串，但一旦长度超过2000个字符，就会引发以下错误：
线程“main”中的异常java.lang.StackOverflowError at java.util.regex.Pattern $ BmpCharProperty.match（Pattern.java:3796）at at java.util.regex.Pattern $ Branch.match（Pattern.java:4604）at java.util.regex.Pattern $ GroupHead.match（Pattern.java:4658）at at java.util.regex.Pattern $ Loop.match（Pattern.java:4785）at java.util.regex.Pattern $ GroupTail.match（Pattern.java:4717）at java.util.regex.Pattern $ BranchConn.match（Pattern.java:4568）at java.util.regex.Pattern $ CharProperty.match（Pattern.java:3777）at at java.util.regex.Pattern中$ Branch.match（Pattern.java:4604）
我读了一些其他线程（thread1，thread2），Java不能很好地处理长字符串的正则表达式。有人可以建议我如何改进我的正则表达式以避免StackOverflowError？
答案 0 :(得分：1)
有人可以建议我如何改进我的正则表达式来避免这种情况 的StackOverflowError？
是的，我可以为您提供两种解决方案，您只需要从另一方面看到您的问题。
以下是对您的问题和快速解决方案的快速分析，您可以使用此正则表达式(.*?\"\s+)\bOR\b(\s+application.*?)：
tables = []
for elems in links:
tables += [link.get_attribute("href") for link in elems]
for link in tables:
browser.get(link)
table = browser.find_elements_by_tag_name("td")
if table:
table_rows = [t.find_elements_by_tag_name("tr") for t in table]
for table_row in table_rows:
your_result = [t.text for t in table_row if not t.startswith("Pages")]
if your_result:
print(your_result)
browser.close()
browser.quit()
我注意到您要替换的OR存在于String inputStr = //that long String
String regex = "(.*?\"\\s+)\\bOR\\b(\\s+application.*?)";
String replacedStr = inputStr.replaceAll(regex, "$1||$2");
System.out.println(replacedStr);
ans " space OR之后，我的正则表达式将匹配该OR并替换它。
简短示例的输出，它将为您提供相同的结果：
application如果您使用的是Java 9+，则可以使用此正则表达式application.path="EXCEL.exe" || application.path="EXCELSIOR.exe" || application.path="XYZ OR ABC.exe"
^^ ^^ ^^ ^^
来匹配application.path=(\"(.*?)\")等所有内容，将结果与application.path="something here"
||