静态最终长long serialVersionUID = 1L
关于我们教授给出的指导课程,我有一个简单的问题。我已经看过几次serialVersionUID,但是我没有什么用。
package module;import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* @author JA
*/
public class Servlet_1 extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet{
static final long serialVersionUID = 1L;
public void doGet (HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("txt/html");
ServletOutputStream out = response.getOutputStream();
out.println("<html>");
out.println("<head><title>Hello Panget</title></head>");
out.println("<body>");
out.println("<h1>Hello Panget</h1>");
out.println("</body></html>");
}
protected void doPost (HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// Write your program here, Panget.
}
}
什么是利用static final long serialVersionUID = 1L;
程序中的?
回答:
该serialVersionUID
是一个通用版本标识符Serializable
类。反序列化使用此数字来确保已加载的类与序列化的对象完全对应。如果未找到匹配项,则InvalidClassException
抛出。
以上是 静态最终长long serialVersionUID = 1L 的全部内容, 来源链接: utcz.com/qa/408288.html