Java 编译错误（Java 中的 Amazon Mechanical Turk 和 REST 示例）

Question

我正在努力用 Java 启动 Amazon Mechanical Turk。

这是项目的链接。 （mturk-rest-java-1.0.zip可以在网站底部下载） http://aws.amazon.com/code/Amazon-Mechanical-Turk/581

当我解压缩并尝试使用以下步骤运行示例时：

1. 更新 MTGettingStarted.java 文件以包含您的访问标识符。

2. 通过输入以下命令编译示例： javac *.java

3. 通过输入以下命令运行示例：
   java MTGettingStarted

编译会报如下错误：

./src/com/amazon/mturk/requester/RESTResponse.java:23: package org.apache.xpath does not exist
import org.apache.xpath.*;
^
./src/com/amazon/mturk/requester/RESTResponse.java:108: cannot find symbol
symbol  : variable XPathAPI
location: class src.com.amazon.mturk.requester.RESTResponse
            str = XPathAPI.eval(doc, xpathString).toString();
                  ^
./src/com/amazon/mturk/requester/RESTResponse.java:125: cannot find symbol
symbol  : variable XPathAPI
location: class src.com.amazon.mturk.requester.RESTResponse
            NodeList nl = XPathAPI.selectNodeList(doc, xpathString);
                          ^
./src/com/amazon/mturk/requester/Utils.java:3: package org.apache.commons.codec.binary does not exist
import org.apache.commons.codec.binary.*;
^
./src/com/amazon/mturk/requester/Utils.java:58: cannot find symbol
symbol  : variable Base64
location: class src.com.amazon.mturk.requester.Utils
            signature = new String(Base64.encodeBase64(rawHmac));
                                   ^
Note: ./src/com/amazon/mturk/requester/RESTResponse.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
5 errors

另外，我无法运行提供的 MTGettingStarted.java

Exception in thread "main" java.lang.NoClassDefFoundError: MTGettingStarted/java
Caused by: java.lang.ClassNotFoundException: MTGettingStarted.java
    at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

我该如何解决这个问题？抱歉，我是 Java 的初学者。

非常感谢

Answer 1

这些命令缺少类路径规范。尝试编译它：

javac -cp bin -d bin MTGettingStarted.java 

然后，运行：

java -cp bin:lib/commons-codec-1.3.jar:lib/serializer.jar:lib/xalan.jar:lib/xercesImpl.jar:lib/xml-apis.jar MTGettingStarted