NoClassDefFoundError： org/apache/comons/lang3/StringUtils

Question

我试图使用此库运行示例项目，但出现以下错误：

Exception in thread "main" java.lang.NoClassDefFoundError: 

    org/apache/commons/lang3/StringUtils

    at com.github.devnied.emvnfccard.enums.EmvCardScheme.<init>(EmvCardScheme.java:97)
    at com.github.devnied.emvnfccard.enums.EmvCardScheme.<clinit>(EmvCardScheme.java:32)
    at com.github.devnied.emvnfccard.parser.EmvParser.readWithAID(EmvParser.java:277)
    at com.github.devnied.emvnfccard.parser.EmvParser.readEmvCard(EmvParser.java:120)
    at com.github.devnied.emvpcsccard.Main.main(Main.java:64)
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang3.StringUtils
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 5 more

我添加了commons-lang-2.6。罐子

主要类别：

public static void main(final String[] args) throws CardException {
    Main pcsc = new Main();
    CardTerminal ct = pcsc.selectCardTerminal();
    Card c = null;
    if (ct != null) {
        c = pcsc.establishConnection(ct);
        CardChannel channel = c.getBasicChannel();
        PcscProvider provider = new PcscProvider(channel);
        EmvParser parser = new EmvParser(provider, false);
        parser.readEmvCard();
        c.disconnect(false);
    }
}

我提到了以下链接：

>

爪哇。lang.ClassNotFoundException:org。阿帕奇。平民BaseClassLoader中的lang.StringUtils

Struts 2框架演示

http://apache-commons.680414.n4.nabble.com/lang-java-lang-NoClassDefFoundError-org-apache-commons-lang-StringUtils-Exception-td3735881.html

Answer 1

哟添加下面和更新maven发音像魅力一样工作

<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.1</version>

Answer 2

如果您使用的是Maven，请将其放入pom中。xml文件：

Maven Commons Lang中央存储库：

<dependency>
    <groupId>commons-lang</groupId>
    <artifactId>commons-lang</artifactId>
    <version>2.6</version>
</dependency>

Maven Apache共享资源的中央存储库：

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-lang3</artifactId>
    <version>3.11</version>
</dependency>

最后发布日期：2020年8月30日|版本：3.11

<dependency>
  <groupId>org.apache.commons</groupId>
  <artifactId>commons-lang3</artifactId>
  <version>3.11</version>
</dependency>

Apache Buildr

'org.apache.commons:commons-lang3:jar:3.11'

阿帕奇常春藤

<dependency org="org.apache.commons" name="commons-lang3" rev="3.11">
  <artifact name="commons-lang3" type="jar" />
</dependency>

美味的葡萄

@Grapes(
@Grab(group='org.apache.commons', module='commons-lang3', version='3.11')
)

格拉德尔/圣杯

compile 'org.apache.commons:commons-lang3:3.11'

Scala SBT

libraryDependencies += "org.apache.commons" % "commons-lang3" % "3.11"

莱宁根

[org.apache.commons/commons-lang3 "3.11"]

• https://commons.apache.org/proper/commons-lang/dependency-info.html

Answer 3

我添加了commons-lang-2.6。罐子

这是您的问题：commons-lang-2.6.jar不包含org.apache.commons.lang3包，因为这是版本3的一部分，并且commons-lang3-3.1-sources.jar包含源代码，而不是字节代码。

您需要包括commons-lang3-3.1。而是jar。