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  • 大小: 2.06MB
    文件類型: .zip
    金幣: 2
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    發布日期: 2023-09-04
  • 語言: Java
  • 標簽:

資源簡介

自己最近學習寫成的代碼！jsp，Mysql，servlet，驗證碼為一體的簡單的用戶登陸驗證！一定可以用！

資源截圖

代碼片段和文件信息 

package?com.demo.servlet;

import?java.io.IOException;
import?java.io.PrintWriter;
import?java.security.MessageDigest;
import?java.sql.Connection;
import?java.sql.DriverManager;
import?java.sql.ResultSet;
import?java.sql.SQLException;
import?java.sql.Statement;

import?javax.servlet.RequestDispatcher;
import?javax.servlet.ServletException;
import?javax.servlet.annotation.WebServlet;
import?javax.servlet.http.HttpServlet;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;
import?javax.servlet.http.HttpSession;

/**
?*?Servlet?implementation?class?login
?*/
@WebServlet（“/login“）
public?class?login?extends?HttpServlet?{
	private?static?final?long?serialVersionUID?=?1L;
???????
????/**
?????*?@see?HttpServlet#HttpServlet（）
?????*/
????public?login（）?{
????????super（）;
????????//?TODO?Auto-generated?constructor?stub
????}

	/**
	?*?@see?HttpServlet#doGet（HttpServletRequest?request?HttpServletResponse?response）
	?*/
	protected?void?doGet（HttpServletRequest?request?HttpServletResponse?response）?throws?ServletException?IOException?{
		//?TODO?Auto-generated?method?stub
		doPost（request?response）;
	}

	/**
	?*?@see?HttpServlet#doPost（HttpServletRequest?request?HttpServletResponse?response）
	?*/
	protected?void?doPost（HttpServletRequest?request?HttpServletResponse?response）?throws?ServletException?IOException?{
		//?TODO?Auto-generated?method?stub
		//編碼格式的改變
		request.setCharacterEncoding（“UTF-8“）;
		response.setCharacterEncoding（“UTF-8“）;
		
		//獲取用戶名，密碼驗證碼輸入內容
		String?uname?=?request.getParameter（“uname“）;
		String?pword?=?request.getParameter（“pword“）;
		String?check?=?request.getParameter（“check“）;
		System.out.println（uname）;
		System.out.println（pword）;
		System.out.println（check）;
		
		//獲取驗證碼
//		??response.setContentType（“text/html“）;
//		??PrintWriter?out?=?response.getWriter（）;
		??
		//通過request得到session?
		??String?code?=?request.getSession（）.getAttribute（“code“）.toString（）;
		??System.out.println（code）;

	????//連接數據庫
		ResultSet?rs??=?null;
		Statement??stmt?=?null;
		RequestDispatcher?dispatcher;
		Connection?conn?=?null;
		try?{
			//1.驅動加載
			Class.forName（“com.mysql.jdbc.Driver“）;
			//2.建立連接
			conn?=?DriverManager.getConnection（“jdbc:mysql://localhost:3306/mytest“?“root“?“123456“）;
			//3.建立statement對象
			stmt?=?conn.createStatement（）;
			System.out.println（“連接數據庫成功！“）;
		}?catch?（ClassNotFoundException?e2）?{
			//?TODO?Auto-generated?catch?block
			e2.printStackTrace（）;
		}?catch?（SQLException?e）?{
			//?TODO?Auto-generated?catch?block
			e.printStackTrace（）;
		}
		//查詢mysql中的數據信息
		//將輸入的密碼轉換成MD5加密：
				try?{??
					MessageDigest?md?=?MessageDigest.getInstance（“MD5“）;??
		????????????md.update（pword.getBytes（））;//update處理??
		????????????byte?[]?encryContext?=?md.digest（）;//調用該方法完成計算??
		????????????
		????????????int?i;??
		????????????StringBuffer?buf?=?new?StringBuffer（““）;??
		??????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-02-03?18:19??demo1\
?????文件?????????819??2016-01-29?14:47??demo1\.classpath
?????文件????????1038??2016-01-29?14:12??demo1\.project
?????目錄???????????0??2016-02-03?18:19??demo1\.settings\
?????文件?????????503??2016-01-26?14:56??demo1\.settings\.jsdtscope
?????目錄???????????0??2016-02-03?18:19??demo1\.settings\.svn\
?????文件??????????77??2016-01-29?14:13??demo1\.settings\.svn\dir-wcprops
?????文件???????????0??2016-01-29?14:13??demo1\.settings\.svn\empty-file
?????文件????????2092??2016-01-29?14:13??demo1\.settings\.svn\entries
?????文件???????????2??2016-01-29?14:13??demo1\.settings\.svn\format
?????目錄???????????0??2016-01-29?14:13??demo1\.settings\.svn\prop-base\
?????目錄???????????0??2016-01-29?14:13??demo1\.settings\.svn\props\
?????文件?????????120??2016-01-29?14:13??demo1\.settings\.svn\README.txt
?????目錄???????????0??2016-02-03?18:19??demo1\.settings\.svn\text-base\
?????文件?????????503??2016-01-29?14:13??demo1\.settings\.svn\text-base\.jsdtscope.svn-base
?????文件??????????88??2016-01-29?14:13??demo1\.settings\.svn\text-base\org.eclipse.core.resources.prefs.svn-base
?????文件?????????364??2016-01-29?14:13??demo1\.settings\.svn\text-base\org.eclipse.jdt.core.prefs.svn-base
?????文件?????????467??2016-01-29?14:13??demo1\.settings\.svn\text-base\org.eclipse.wst.common.component.svn-base
?????文件?????????305??2016-01-29?14:13??demo1\.settings\.svn\text-base\org.eclipse.wst.common.project.facet.core.xml.svn-base
?????文件??????????49??2016-01-29?14:13??demo1\.settings\.svn\text-base\org.eclipse.wst.jsdt.ui.superType.container.svn-base
?????文件???????????6??2016-01-29?14:13??demo1\.settings\.svn\text-base\org.eclipse.wst.jsdt.ui.superType.name.svn-base
?????目錄???????????0??2016-02-03?18:19??demo1\.settings\.svn\tmp\
?????目錄???????????0??2016-01-29?14:13??demo1\.settings\.svn\tmp\prop-base\
?????目錄???????????0??2016-01-29?14:13??demo1\.settings\.svn\tmp\props\
?????目錄???????????0??2016-01-29?14:13??demo1\.settings\.svn\tmp\text-base\
?????目錄???????????0??2016-01-29?14:13??demo1\.settings\.svn\tmp\wcprops\
?????目錄???????????0??2016-02-03?18:19??demo1\.settings\.svn\wcprops\
?????文件??????????88??2016-01-29?14:13??demo1\.settings\.svn\wcprops\.jsdtscope.svn-work
?????文件?????????110??2016-01-29?14:13??demo1\.settings\.svn\wcprops\org.eclipse.core.resources.prefs.svn-work
?????文件?????????104??2016-01-29?14:13??demo1\.settings\.svn\wcprops\org.eclipse.jdt.core.prefs.svn-work
?????文件?????????110??2016-01-29?14:13??demo1\.settings\.svn\wcprops\org.eclipse.wst.common.component.svn-work
............此處省略210個文件信息

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