?? serviceservlet.java
字號:
package anni.tools;
import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* 自制的mvc消息轉發類.
* 使用反射而非xml配置,因為我懶啊。
*
* @author Lingo
* @version 1.0
* @since 2006-01-01 20:02
*/
public class ServiceServlet extends HttpServlet {
/**
* 持久化.
*/
private static final long serialVersionUID = 1L;
/**
* 處理請求的action所在的包名.
*/
private String packageName;
/**
* 從配置文件web.xml中取package-name.
* 如果沒有設置,那么默認使用的是anni.tools包
* 反射的時候,就從這個包里尋找所要使用到的類
*
* @author Lingo
* @since 2006-01-01 20:03
* @param config servlet配置
* @throws ServletException servlet異常
*/
public final void init(final ServletConfig config)
throws ServletException {
super.init(config);
packageName = getInitParameter("package-name");
if ((packageName == null) || packageName.equals("")) {
packageName = "anni.tools.";
} else {
packageName += ".";
}
}
/**
* 處理post請求.
* @param request 請求
* @param response 響應
* @throws ServletException servlet異常
* @throws IOException io異常
*/
protected final void doPost(final HttpServletRequest request,
final HttpServletResponse response)
throws ServletException, IOException {
process(request, response);
}
/**
* 處理get請求.
* @param request 請求
* @param response 響應
* @throws ServletException servlet異常
* @throws IOException io異常
*/
protected final void doGet(final HttpServletRequest request,
final HttpServletResponse response)
throws ServletException, IOException {
process(request, response);
}
/**
* 轉發請求.
*
* @author Lingo
* @since 2006-01-01 19:36
* @param request 請求
* @param response 響應
* @throws ServletException servlet異常
* @throws IOException io異常
*/
protected final void process(final HttpServletRequest request,
final HttpServletResponse response)
throws ServletException, IOException {
String method = request.getParameter("method");
Log.info("method - " + method);
Class clazz;
Service service;
String forward = null;
RequestDispatcher dispatcher = null;
try {
clazz = Class.forName(packageName + method);
service = (Service) clazz.newInstance();
forward = service.service(request);
dispatcher = request.getRequestDispatcher(forward);
dispatcher.forward(request, response);
} catch (Throwable ex) {
ex.printStackTrace();
}
}
}
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