{"id":652,"date":"2010-06-26T19:23:00","date_gmt":"2010-06-26T11:23:00","guid":{"rendered":"http:\/\/blog.jixin.ntxz.net\/?p=652"},"modified":"2010-07-30T15:38:50","modified_gmt":"2010-07-30T07:38:50","slug":"asp-net-sql%e6%b3%a8%e5%85%a5%e5%ae%9e%e9%aa%8c2","status":"publish","type":"post","link":"http:\/\/www.ntxz.net\/?p=652","title":{"rendered":"asp.net sql\u6ce8\u5165\u5b9e\u9a8c(2)"},"content":{"rendered":"<p><font face=Verdana>net sql\u6ce8\u5165\u5b9e\u9a8c(2)<br \/><\/font><\/p>\n<p><font face=Verdana>\u8de8\u9875\u4f20\u9012\u5728asp\u65f6\u4ee3\u6700\u7b80\u5355\u7684\u505a\u6cd5\u662f\u67e5\u8be2\u5b57\u7b26\u4e32\u3002\u8fd9\u79cd\u505a\u6cd5\u5728asp.net 2.0\u5df2\u7ecf\u4e0d\u662f\u63a8\u8350\u7684\u505a\u6cd5\u4e86\uff0c\u4f46\u5bf9\u4e8e\u7b80\u5355\u6570\u636e\u4f20\u8f93\u8fd8\u662f\u4e00\u79cd\u7b80\u5355\u7684\u4fbf\u5229\u7684\u505a\u6cd5\u3002\u4eca\u5929\u6211\u4eec\u5c31\u901a\u8fc7\u67e5\u8be2\u5b57\u7b26\u4e32\u8fdb\u4e00\u6b65\u4e86\u89e3sql\u6ce8\u5165\u7684\u6ce8\u5165\u6f0f\u6d1e\u5224\u65ad\u7684\u76f8\u5173\u77e5\u8bc6\u3002 <br \/>\u4e00\uff0e\u5b9e\u9a8c\u51c6\u5907\uff1apage1\uff1a\u4f20\u9012\u53c2\u6570 <br \/>Page2: \u63a5\u6536\u5e76\u5904\u7406\u53c2\u6570. <br \/>&nbsp;<br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br \/>\u4e8c\uff0e\u76f8\u5173\u4ee3\u7801\uff1a <br \/>\uff081\uff09page1\u4f20\u9012\u53c2\u6570\u7684\u4ee3\u7801 <br \/>protected void Button1_Click1(object sender, EventArgs e) <br \/>&nbsp;&nbsp;&nbsp; { <br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Response.Redirect(&#8220;page2.aspx?name=\u201d+textbox_name.Text.Tostring()+ \u201c&amp;password=\u201d+ textbox_password.Text.Tostring()); <br \/>} <br \/>(2) page2\u63a5\u6536\u5e76\u5904\u7406 <br \/>username.Text = Request.QueryString[&#8220;name&#8221;].ToString(); <br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; tpassword.Text = Request.QueryString[&#8220;password&#8221;].ToString(); <br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; username = tusername.Text; <br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; pswd = tpassword.Text; <br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; cmd.CommandText = &#8220;SELECT * FROM [test].[dbo].[user] where [user]='&#8221; + username + &#8220;&#8216; and [pswd]='&#8221; + pswd + &#8220;&#8216;&#8221;; <br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; if (cmd.ExecuteScalar() != null) <br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Response.Write(&#8220;hao&#8221;); <br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; \/\/Response.Redirect(&#8220;Welcom.aspx&#8221;); <br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; else <br \/>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; TextBox1.Text = &#8220;\u7528\u6237\u540d\u6216\u5bc6\u7801\u9519\u8bef&#8221;; <br \/>\u8fd0\u884c\u60c5\u51b5\uff1a <br \/>\u7528\u67e5\u8be2\u5b57\u7b26\u4e32\uff0c\u4f20\u9012\u7684\u53c2\u6570\u4f1a\u5728\u5730\u5740\u680f\u663e\u793a\u51fa\u6765\uff1a <br \/>http:\/\/localhost:1239\/WebSite\/page2.aspx?name=xuanhun&amp;password=123456\uff0c <br \/>\u6839\u636e\u8fd9\u4e2a\u5f62\u5f0f\u7684\u5730\u5740\uff0c\u6211\u4eec\u8ba8\u8bba\u4e00\u4e2a\u7b80\u5355\u7684\u6ce8\u5165\u6f0f\u6d1e\u5224\u65ad\u7684\u539f\u7406\u3002 <br \/>\u4e09\uff0e <br \/>1\uff0e\u6570\u5b57\u578b <br \/>\u67e5\u8be2\u8bed\u53e5\u7c7b\u4f3c\u4e3a\uff1aSelect * from \u8868\u540d where \u5b57\u6bb5=23\u3002\u56e0\u4e3a\u6570\u5b57\u578b\u6ca1\u6709\u5f15\u53f7\uff0c\u76f4\u63a5\u52a0\u67e5\u8be2\u8bed\u53e5\u6d4b\u8bd5\u662f\u5426\u53ef\u4ee5\u6267\u884c <br \/>\u2460http:\/\/localhost:1239\/WebSite\/page2.aspx?id=23\u3002\u8fd9\u662f\u6b63\u5e38\u7f51\u9875\u3002\u67e5\u8be2\u8bed\u53e5\u4e3a <br \/>Select * from \u8868\u540d where \u5b57\u6bb5=23 <br \/>\u2461http:\/\/localhost:1239\/WebSite\/page2.aspx?id=23 and 1=1\u3002\u56e0\u4e3aand 1=1\u4e3a\u771f\uff0c\u6240\u4ee5\u5982\u679c\u8fd4\u56de\u7684\u9875\u9762\u548c\u2460\u540c\uff0c\u8bf4\u660e\u6211\u4eec\u63d2\u5165\u7684\u8bed\u53e5\u6267\u884c\u4e86\u3002\u67e5\u8be2\u8bed\u53e5\u4e3a\uff1aSelect * from \u8868\u540d where \u5b57\u6bb5=23 and 1=1. <br \/>\u2462http:\/\/localhost:1239\/WebSite\/page2.aspx?id=23 and 1=2\u3002\u56e0\u4e3aand 1=2\u4e3a\u5047\uff0c\u67e5\u8be2\u8bed\u53e5\u4e3a\uff1aSelect * from \u8868\u540d where \u5b57\u6bb5=23 and 1=2\u3002 <br \/>\u8fd9\u5c31\u662f\u7ecf\u5178\u76841=1\u30011=2\u6d4b\u8bd5\u6cd5\u7684\u539f\u7406\u3002\u53ef\u4ee5\u6ce8\u5165\u7684\u8868\u73b0\uff1a <br \/>\u2460 \u6b63\u5e38\u663e\u793a\uff08\u8fd9\u662f\u5fc5\u7136\u7684\uff0c\u4e0d\u7136\u5c31\u662f\u7a0b\u5e8f\u6709\u9519\u8bef\u4e86\uff09 \u2461 \u6b63\u5e38\u663e\u793a\uff0c\u5185\u5bb9\u57fa\u672c\u4e0e\u2460\u76f8\u540c \u2462 \u63d0\u793aBOF\u6216EOF\uff08\u7a0b\u5e8f\u6ca1\u505a\u4efb\u4f55\u5224\u65ad\u65f6\uff09\u3001\u6216\u63d0\u793a\u627e\u4e0d\u5230\u8bb0\u5f55\uff08\u5224\u65ad\u4e86rs.eof\u65f6\uff09\u3001\u6216\u663e\u793a\u5185\u5bb9\u4e3a\u7a7a\uff08\u7a0b\u5e8f\u52a0\u4e86on error resume next\uff09 <br \/>&nbsp;&nbsp; \u4e0d\u53ef\u4ee5\u6ce8\u5165\u5c31\u6bd4\u8f83\u5bb9\u6613\u5224\u65ad\u4e86\uff0c\u2460\u540c\u6837\u6b63\u5e38\u663e\u793a\uff0c\u2461\u548c\u2462\u4e00\u822c\u90fd\u4f1a\u6709\u7a0b\u5e8f\u5b9a\u4e49\u7684\u9519\u8bef\u63d0\u793a\uff0c\u6216\u63d0\u793a\u7c7b\u578b\u8f6c\u6362\u65f6\u51fa\u9519\u3002 <br \/>2\uff0e\u5b57\u7b26\u578b\u3002 <br \/>\u67e5\u8be2\u8bed\u53e5\u7c7b\u4f3c\u4e3a\uff1aSelect * from \u8868\u540d where \u5b57\u6bb5=\u2019xuanhun\u2019\u3002 <br \/>\u6d4b\u8bd5\u4e0d\u8fc7\u662f\u5148\u5c4f\u853d\u5355\u5f15\u53f7\u518d\u7528\u4e0a\u9762\u7684\u65b9\u6cd5\u6765\u68c0\u6d4b\u6f0f\u6d1e\u3002 <br \/>\u6bd4\u5982\u6211\u4eec\u4e0a\u9762\u7684\u6d4b\u8bd5\u9875\u9762\uff1ahttp:\/\/localhost:1239\/WebSite\/page2.aspx?name=xuanhun&amp;password=123456\uff0c <br \/>\u67e5\u8be2\u8bed\u53e5\u4e3a\uff1aSelect * from [user] where [name]=\u2019xuanhun\u2019and [pswd]=\u2019123456\u2019\u3002 <br \/>\u5b57\u7b26\u578b\u53ef\u4ee5\u76f4\u63a5\u5728\u5355\u5f15\u53f7\u770b\u7a0b\u5e8f\u7684\u9519\u8bef\u4fe1\u606f\uff0c\u5982http:\/\/localhost:1239\/WebSite\/page2.aspx?name=xuanhun&amp;password=123456\u2019\u8fd4\u56de\u9519\u8bef\u4fe1\u606f\uff1a <br \/>\u201c\/WebSite\u201d\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u670d\u52a1\u5668\u9519\u8bef\u3002 <\/font><\/p>\n<p><font face=Verdana><\/font>&nbsp;<\/p>\n<p><font face=Verdana>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;<\/font><\/p>\n<p><font face=Verdana>\u5b57\u7b26\u4e32 &#8216;123456&#8221; \u540e\u7684\u5f15\u53f7\u4e0d\u5b8c\u6574\u3002 &#8216;123456&#8221; \u9644\u8fd1\u6709\u8bed\u6cd5\u9519\u8bef\u3002 <br \/>\u518d\u5c4f\u853d\u5355\u5f15\u53f7\u770b\u7ed3\u679c\uff1ahttp:\/\/localhost:1239\/WebSite\/page2.aspx?name=xuanhun&amp;password=123456\u2019and \u2018a\u2019=\u2019a\u2019- &#8211; <br \/>\u9875\u9762\u6b63\u5e38\u3002 <br \/>http:\/\/localhost:1239\/WebSite\/page2.aspx?name=xuanhun&amp;password=123456\u2019and \u2018a\u2019=\u2019b\u2019- &#8211; <br \/>\u9875\u9762\u9519\u8bef\u3002 <br \/>\uff13\uff0e\u641c\u7d22\u578b\u3002 <br \/>\u67e5\u8be2\u8bed\u53e5\u7c7b\u4f3c\u4e3a\uff1aSelect * from \u8868\u540d where \u5b57\u6bb5like \u2019%\u5173\u952e\u5b57%\u2019 <br \/>\u8981\u5c4f\u853d\u5355\u5f15\u53f7\u548c\u767e\u5206\u53f7\u518d\u7528\u4e0a\u9762\u7684\u65b9\u6cd5\u6d4b\u8bd5\uff0c\u6ce8\u5165\u4e5f\u662f\u4e00\u6837\u3002 <br \/>\u4f8b\u5982\uff1aselect * from [user] where [username] like \u2018%a%\u2019 and 1=1&#8211; <br \/>\u539f\u7406\u8ddf\u4e0a\u9762\u8bb2\u7684\u76f8\u540c\uff0c\u5c31\u4e0d\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u3002 <br \/><\/font><\/p>\n","protected":false},"excerpt":{"rendered":"<p>net sql\u6ce8\u5165\u5b9e\u9a8c(2) \u8de8\u9875\u4f20\u9012\u5728asp\u65f6\u4ee3\u6700\u7b80\u5355\u7684\u505a\u6cd5\u662f\u67e5\u8be2\u5b57\u7b26\u4e32\u3002\u8fd9\u79cd\u505a\u6cd5\u5728asp.net 2.0\u5df2 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,8],"tags":[],"class_list":["post-652","post","type-post","status-publish","format-standard","hentry","category-1","category-oldblog"],"views":940,"_links":{"self":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts\/652","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=652"}],"version-history":[{"count":1,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts\/652\/revisions"}],"predecessor-version":[{"id":740,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts\/652\/revisions\/740"}],"wp:attachment":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=652"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}