无法找到或加载主类java

时间：2015-10-01 13:06:29

标签： java windows maven cmd classpath

我有蝙蝠文件：

java -cp "./lib/*:." TestRunner

当我运行bat文件时，我有

Can not load main class TestRunner

在我得到命令之前：

java -cp .\lib\*;. TestRunner

和

java -cp .\lib\*;. com.pkg.TestRunner

同样的错误。

帮助我理解。我用maven编译了所有源代码，并且在目标文件夹target/src/java/main/com/pkg/TestRunner.class中进行了所有文件，所有文件都没有在刚编译的jar中编写，我想从编译文件集中运行文件

也许maven不知何故没有指定主类，

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.pkg</groupId>
    <artifactId>automation</artifactId>
    <packaging>jar</packaging>
    <version>1.0-SNAPSHOT</version>

    <build>
        <directory>target</directory>
        <outputDirectory>target/classes</outputDirectory>
        <finalName>AUTOMATION-01</finalName>
        <testOutputDirectory>target/test-classes</testOutputDirectory>
        <sourceDirectory>src/main/java</sourceDirectory>
        <testSourceDirectory>src/test/java</testSourceDirectory>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
        </resources>
        <testResources>
            <testResource>
                <directory>src/test/resources</directory>
            </testResource>
        </testResources>
    </build>

    <reporting>
        <outputDirectory>target/site</outputDirectory>
    </reporting>

    <profiles>

        <profile>
            <id>release-profile</id>

            <activation>
                <property>
                    <name>performRelease</name>
                </property>
            </activation>

            <build>
                <plugins>

                    <plugin>
                        <inherited>true</inherited>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-source-plugin</artifactId>

                        <executions>
                            <execution>
                                <id>attach-sources</id>
                                <goals>
                                    <goal>jar</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>

                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-compiler-plugin</artifactId>
                        <version>3.3</version>
                        <configuration>
                            <source>1.7</source>
                            <target>1.7</target>
                        </configuration>
                    </plugin>

                    <plugin>
                        <inherited>true</inherited>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-deploy-plugin</artifactId>
                        <configuration>
                            <updateReleaseInfo>true</updateReleaseInfo>
                        </configuration>
                    </plugin>

                </plugins>

            </build>
        </profile>
    </profiles>


    <dependencies>

        <dependency>
            <groupId>javax.xml.ws</groupId>
            <artifactId>jaxws-api</artifactId>
            <version>2.2.11</version>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.4</version>
        </dependency>
        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>com.sun.xml.bind</groupId>
            <artifactId>jaxb-impl</artifactId>
            <version>2.2.11</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.jaxb</groupId>
            <artifactId>jaxb-runtime</artifactId>
            <version>2.2.11</version>
        </dependency>

    </dependencies>


</project>

我的树：

\---target
    +---classes
    |   +---com
    |   |   +---example
    |   |   |   \---ru
    |   |   |       \---pkg
    |   |   |           \---webservices
    |   |   |               +---submission
    |   |   |               |   \---submissionapi
    |   |   |               \---synchronisation
    |   |   |                   \---syncsfdataapi
    |   |   +---module
    |   |   |   +---ac
    |   |   |   |   \---ws
    |   |   |   |       \---tt
    |   |   |   |           \---webservice
    |   |   |   |               \---pc
    |   |   |   |                   \---quoting
    |   |   |   |                       \---quotingapi
    |   |   |   \---ws
    |   |   |       \---soapheaders
    |   |   \---pkg
    |   |       +---comparation
    |   |       +---filters
    |   |       +---model
    |   |       +---runner
    |   |       +---utils
    |   |       \---ws
    |   \---data_request
    |       +---request
    |       \---responce
    \---maven-status
        \---maven-compiler-plugin
            \---compile
                \---default-compile

3 个答案:

答案 0 :(得分：1)

您是否在没有:.的情况下进行了尝试，因为这看起来像bash syntax，这意味着如果.\lib\*不存在则使用当前目录.

如果你在Windows上，我建议删除:.并尝试其中一种变体

java -cp "./lib/*" TestRunner 
java -cp ".\\lib\\*" TestRunner 
java -cp "lib\*" TestRunner

所有这些都使用相对路径。如果它失败了你应该尝试使用完整路径：

java -cp "c:/some/folder/lib" TestRunner 
java -cp "c:\\some\\folder\\lib" TestRunner

<强>更新

尝试将此示例转换为抓取here 

D:\myprogram\
      |
      ---> org\
            |
            ---> mypackage\
                     |
                     ---> HelloWorld.class
                     ---> SupportClass.class
                     ---> UtilClass.class


java -classpath D:\myprogram org.mypackage.HelloWorld

答案 1 :(得分：0)

很简单。添加到maven pom.xml说明，将有关主类和所需库的信息放入MANIFEST.MF：

IObservable<TimeInterval<long>> observable = Observable.Interval(TimeSpan.FromMilliseconds(750)).TimeInterval();
using (observable.Subscribe(
    x => Console.WriteLine("{0}: {1}", x.Value, x.Interval)))
{
    Console.WriteLine("Press any key to unsubscribe");
    Console.ReadKey();
}

执行包后，您可以使用命令

启动应用程序 
        <plugin>
            <artifactId>maven-jar-plugin</artifactId>
            <version>2.4</version>
            <configuration>
                <archive>
                    <manifest>
                        <addClasspath>true</addClasspath>
                        <mainClass>com.pkg.TestRunner</mainClass>
                        <classpathPrefix>lib/</classpathPrefix>
                    </manifest>
                </archive>
            </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-dependency-plugin</artifactId>
            <executions>
                <execution>
                    <phase>package</phase>
                    <goals>
                        <goal>copy-dependencies</goal>
                    </goals>
                    <configuration>
                        <outputDirectory>${project.build.directory}/lib</outputDirectory>
                    </configuration>
                </execution>
            </executions>
        </plugin>

其中project - 项目名称。

答案 2 :(得分：0)

由于TestRunner位于'use strict'; var React = require('react-native'); var { StyleSheet, Text, TouchableOpacity, View, AppRegistry, NavigatorIOS } = React; var MainApp = React.createClass({ render: function() { return ( <NavigatorIOS style={styles.mainContainer} initialRoute={{ component: FirstScreen, title: 'First Screen', passProps: { text: ' ...' }, }} /> ); }, }); var FirstScreen = React.createClass({ render: function() { return ( <View style={styles.container}> <Text style={styles.helloText}> Hello {this.props.text} </Text> <TouchableOpacity style={styles.changeButton} onPress={this.gotoSecondScreen}> <Text>Click to change</Text> </TouchableOpacity> </View> ); }, gotoSecondScreen: function() { console.log("button pressed"); this.props.navigator.push({ title: "Second Screen", component: SecondScreen }); }, }); var SecondScreen = React.createClass({ render: function() { return ( <View style={styles.container}> <Text style={styles.helloText}> Select a greeting </Text> <TouchableOpacity style={styles.changeButton} onPress={() => this.sayHello("World!")}> <Text>...World!</Text> </TouchableOpacity> <TouchableOpacity style={styles.changeButton} onPress={() => this.sayHello("my Friend!")}> <Text>...my Friend!</Text> </TouchableOpacity> </View> ); }, sayHello: function(greeting) { console.log("world button pressed"); this.props.navigator.replacePreviousAndPop({ title: "First Screen", component: FirstScreen, passProps: {text: greeting} }); } }); var styles = StyleSheet.create({ mainContainer: { flex: 1, backgroundColor: "#eee" }, container: { flex: 1, alignItems: "center", justifyContent: "center", marginTop: 50, }, helloText: { fontSize: 16, }, changeButton: { padding: 5, borderWidth: 1, borderColor: "blue", borderRadius: 4, marginTop: 20 } }); AppRegistry.registerComponent("TestApp", () => MainApp); 包中，因此首先尝试使用以下命令运行它：

com.pkg.runner

注意，当您运行java -classpath . com.pkg.runner.TestRunner 命令时，您必须是java文件夹中的一个以上。

在这里写下结果

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