usedll.java

源程序用户的学生管理系统

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author dzy
 * 在Java中调用DLL的Servlet
 */
public class useDLL extends HttpServlet {
    //本地库文件中的方法声明
    public native int add(int a, int b);
    public void doGet(HttpServletRequest request, HttpServletResponse response)
		throws ServletException, IOException {
		response.setContentType("text/html;charset=GB2312");
		PrintWriter out = response.getWriter();
		int sum = add(100,200);
		out.println("调用DLL方法的结果是:<br>");
		out.println("100+200= "+ sum );
    }
    //声明所需调用的库
    static {
		System.loadLibrary("Math");
	}
}