7. Servlet功能测试

为了验证BinCat是否真的具备了Servlet处理能力，我们写两个测试用例：TestServlet和CMDServlet。
TestServlet示例代码：

package com.anbai.sec.server.test.servlet;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.OutputStream;
@WebServlet(name = "TestServlet", urlPatterns = "/TestServlet/")
public class TestServlet extends HttpServlet {
   @Override
   public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
      doPost(request, response);
   }
   @Override
   public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
      OutputStream out = response.getOutputStream();
      out.write(("Hello....<br/>Request Method:" + request.getMethod() + "<br/>Class:" + this.getClass()).getBytes());
   }
}

浏览器请求http://localhost:8080/TestServlet/:

CMDServlet示例代码：

package com.anbai.sec.server.test.servlet;
import org.javaweb.utils.IOUtils;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.OutputStream;
@WebServlet(name = "CMDServlet", urlPatterns = "/CMD/")
public class CMDServlet extends HttpServlet {
   @Override
   public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
      doPost(request, response);
   }
   @Override
   public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException {
      String cmd   = request.getParameter("cmd");
      byte[] bytes = IOUtils.toByteArray(Runtime.getRuntime().exec(cmd).getInputStream());
      OutputStream out = response.getOutputStream();
      out.write(bytes);
      out.flush();
      out.close();
   }
}

浏览器请求http://localhost:8080/CMD/?cmd=whoami:

使用curl发送POST请求:curl -i localhost:8080/CMD/ -d "cmd=pwd"，服务器可以正常接收POST参数，处理结果如图：

请求一个错误服务：

至此，我们已经实现了一个非常初级的Servlet容器了。
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