我正在努力用 Java 启动 Amazon Mechanical Turk。
这是该项目的链接。（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：
更新 MTGettingStarted.java 文件以包含您的访问标识符。
通过输入以下命令编译示例：javac *.java
通过输入以下命令运行示例：
java MTGettingStarted
编译会报以下错误：
./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