java 正则表达式获取值,该如何处理-Java教程-爱易网页

java 正则表达式获取值,该如何处理

日期：2014-05-20　浏览次数：20698 次

java 正则表达式获取值
比如以下有规律的文件，如何通过正则表达式获取path的值
<classPath>
<classpathentry kind="lib" path="/bss.lib/third-lib/jakarta-commons/commons-beanutils-1.7.0.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/jakarta-commons/commons-codec-1.3.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/jakarta-commons/commons-collections-3.2.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/jakarta-commons/commons-lang-2.4.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/dom4j/dom4j-1.6.1.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/dom4j/jaxen-1.1.1.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/spring/spring-2.5.6.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/j2ee/servlet-api.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/jakarta-commons/commons-httpclient-3.0.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/log4j/log4j-1.2.14.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/logback/logback-classic-0.9.16.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/logback/logback-core-0.9.16.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/logback/slf4j-api-1.5.8.jar"/>
<classpathentry kind="lib" path="/bss.lib/third-lib/jakarta-commons/commons-logging-1.1.1.jar"/>
</classPath>

我写了段正则，可能正则写的有问题，没有找到匹配的path，我的正则path=[\\w]*$/，认为是以path=开头，到/结尾的就找到匹配的了，但是结果出不来，请高手斧正，并指出原因
Pattern pattern = Pattern
.compile("path=[\\w]*$/");
Matcher matcher = pattern.matcher(xml);
if (matcher.find()) {
serviceCode = matcher.group();
}
System.out.println(serviceCode);

------解决方案--------------------

Java code

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Test1 {
    public static void main(String[] args) {
        String str = "<classPath>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/jakarta-commons/commons-beanutils-1.7.0.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/jakarta-commons/commons-codec-1.3.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/jakarta-commons/commons-collections-3.2.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/jakarta-commons/commons-lang-2.4.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/dom4j/dom4j-1.6.1.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/dom4j/jaxen-1.1.1.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/spring/spring-2.5.6.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/j2ee/servlet-api.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/jakarta-commons/commons-httpclient-3.0.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/log4j/log4j-1.2.14.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/logback/logback-classic-0.9.16.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/logback/logback-core-0.9.16.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/logback/slf4j-api-1.5.8.jar\"/>\n" + 
                "<classpathentry kind=\"lib\" path=\"/bss.lib/third-lib/jakarta-commons/commons-logging-1.1.1.jar\"/>\n" + 
                "</classPath>";
        
//        String regex = "(path=\"\\S+\")";
        String regex = "path=\"(\\S+)\"";
        Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
        Matcher matcher = pattern.matcher(str);
        while(matcher.find()) {
            System.out.println(matcher.group(1));
        }
    }
}

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java 正则表达式获取值,该如何处理

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