在eclipse中用jetty和cactus为servlet做单元测试

. 下载jetty，解压到安装目录并在eclipse中做好配置。
2. 下载cactus，将lib目录下的aspectjrt-1.5.3.jar， cactus.core.framework.uberjar.javaEE.14-1.8.0.jar， commons-httpclient-3.1.jar，commons-logging-1.1.jar，httpunit-1.6.jar，junit-3.8.2.jar解压到jetty的lib目录下。
3. 修改myapp的WEB-INF目录下的web.xml文件，添加如下内容：

<servlet>
    <servlet-name>ServletRedirector</servlet-name>
    <servlet-class>org.apache.cactus.server.ServletTestRedirector</servlet-class>
    <init-param>
        <param-name>param1</param-name>
        <param-value>value1 used for testing</param-value>
    </init-param>
    </servlet>

    <servlet>
        <servlet-name>ServletTestRunner</servlet-name>
        <servlet-class>org.apache.cactus.server.runner.ServletTestRunner</servlet-class>
    </servlet>

<servlet-mapping>
    <servlet-name>ServletRedirector</servlet-name>
    <url-pattern>/ServletRedirector</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>ServletTestRunner</servlet-name>
        <url-pattern>/ServletTestRunner</url-pattern>
    </servlet-mapping>

4. 建立测试的Java文件，TestMyServlet.java

public class TestMyServlet extends ServletTestCase {

    public TestMyServlet(String theName) throws Exception
    {
        super(theName);

        System.setProperty("cactus.contextURL", "http://localhost:8080/myapp");
    }

    public static Test suite()
    {
        TestSuite suite = new TestSuite();
        suite.addTestSuite(TestMyServlet.class);
        return new Jetty6xTestSetup(suite);
    }

    public void testMyServletInitialized()
    {
        MyServlet servlet = new MyServlet();
        try {
            servlet.init(config);
        } catch (ServletException e) {
            e.printStackTrace();
        }
        assertTrue(servlet.getInitialized());
    }

5. 建立待测试的Java文件，MyServlet.java

public class MyServletextends HttpServlet {

    protected static boolean initialized = false;

    public void init(ServletConfig servletConfig) throws ServletException
    {
        super.init(servletConfig);

        if (MyServlet.initialized)
            return;

        MyServlet.initialized = true;
    }

    public boolean getInitialized() {
        return MyServlet.initialized;
    }
}

6. 启动jetty，用junit运行测试，呵呵，绿了。