CODEWITHSUNDEEP
javaregex
Barcelona
Barcelona

Reputation: 11

JavaRegEx and complex long string

I'm trying to extract the value from the exception by using regular expression in Java. But the string is too complicated and long (all in one line):

ReturnCode={Val=9002;SubVal=9203;Text=Subscriber not found};Message=Subscriber not found;LocalizedMessage=Subscriber not found;Cause==null;StackTrace={[co.com.tigo.gatewaytigo.scp.mcommerce.method.RechargeMCommerce.getRechargeResult(RechargeMCommerce.java:72)][co.com.tigo.gatewaytigo.scp.mcommerce.MCommerceAPI.recharge(MCommerceAPI.java:353)][co.com.tigo.gatewaytigo.scp.interfacesscp.SCPFacade.recharge(SCPFacade.java:257)][co.com.tigo.gatewaytigo.webscp.ws.GatewayTigoWS.recharge(Unknown Source)][sun.reflect.GeneratedMethodAccessor4092.invoke(Unknown Source)][sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)][java.lang.reflect.Method.invoke(Method.java:597)][weblogic.wsee.jaxws.WLSInstanceResolver$WLSInvoker.invoke(WLSInstanceResolver.java:89)][weblogic.wsee.jaxws.WLSInstanceResolver$WLSInvoker.invoke(WLSInstanceResolver.java:71)][com.sun.xml.ws.server.InvokerTube$2.invoke(InvokerTube.java:146)][com.sun.xml.ws.server.sei.EndpointMethodHandler.invoke(EndpointMethodHandler.java:257)][com.sun.xml.ws.server.sei.SEIInvokerTube.processRequest(SEIInvokerTube.java:93)][com.sun.xml.ws.api.pipe.Fiber.__doRun(Fiber.java:598)][com.sun.xml.ws.api.pipe.Fiber._doRun(Fiber.java:557)][com.sun.xml.ws.api.pipe.Fiber.doRun(Fiber.java:542)][com.sun.xml.ws.api.pipe.Fiber.runSync(Fiber.java:439)][com.sun.xml.ws.server.WSEndpointImpl$2.process(WSEndpointImpl.java:243)][com.sun.xml.ws.transport.http.HttpAdapter$HttpToolkit.handle(HttpAdapter.java:444)][com.sun.xml.ws.transport.http.HttpAdapter.handle(HttpAdapter.java:244)][com.sun.xml.ws.transport.http.servlet.ServletAdapter.handle(ServletAdapter.java:134)][weblogic.wsee.jaxws.HttpServletAdapter$AuthorizedInvoke.run(HttpServletAdapter.java:272)][weblogic.wsee.jaxws.HttpServletAdapter.post(HttpServletAdapter.java:185)][weblogic.wsee.jaxws.JAXWSServlet.doPost(JAXWSServlet.java:180)][javax.servlet.http.HttpServlet.service(HttpServlet.java:727)][weblogic.wsee.jaxws.JAXWSServlet.service(JAXWSServlet.java:64)][javax.servlet.http.HttpServlet.service(HttpServlet.java:820)][weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)][weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)][weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)][weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)][weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3498)][weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)][weblogic.security.service.SecurityManager.runAs(Unknown Source)][weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)][weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)][weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)][weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)][weblogic.work.ExecuteThread.run(ExecuteThread.java:173)]}

I want to extract the Val and SubVal from that string and my pattern is:

^(?:(?:.|\\n|\\r)*)Val=(\\d+);SubVal=(\\d+)(?:(?:.)*)$

I got this exception:

Exception in thread "main" java.lang.StackOverflowError
    at java.lang.String.charAt(String.java:685)
    at java.lang.Character.codePointAt(Character.java:2335)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3344)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4114)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4168)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4295)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4227)
    at java.util.regex.Pattern$BranchConn.match(Pattern.java:4078)
    at java.util.regex.Pattern$CharProperty.match(Pattern.java:3345)
    at java.util.regex.Pattern$Branch.match(Pattern.java:4114)
    at java.util.regex.Pattern$GroupHead.match(Pattern.java:4168)
    at java.util.regex.Pattern$Loop.match(Pattern.java:4295)
    at java.util.regex.Pattern$GroupTail.match(Pattern.java:4227)

How should I do to extract that Val and SubVal value from that string by using Java RegEx?

Upvotes: 1

Views: 1305

Answers (2)

Tassos Bassoukos
Tassos Bassoukos

Reputation: 16152

I see a lot of extraneous matches; why won't a simple [{]Val=(\\d+);SubVal=(\\d+); work?

Upvotes: 3

Paŭlo Ebermann
Paŭlo Ebermann

Reputation: 74800

Java's RE engine has some problems with repetitions containing alternatives: They get compiled to a recursive function, and on long strings like your's, you get the StackOverflowError.

I'm not sure why you need the ^(?:(?:.|\\n|\\r)*) at the start, and (?:(?:.)*)$ at the end - shouldn't this work without those, too, if you are using find instead of matches?

Here is some example code:

Pattern p = Pattern.compile("Val=(\\d+);SubVal=(\\d+);");

Matcher m = p.matcher(string);
if(m.find()) {
    int val = Integer.parseInt(m.group(1));
    int subVal = Integer.parseInt(m.group(2));
}

(Of course, if you do this several times, make the Pattern some static variable to avoid recompiling it for each use.)

Upvotes: 1

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