java中后台向前台jsp页面传值问题 java中后台向前台jsp页面传值问题
\u600e\u4e48\u628ajava\u4ece\u540e\u53f0\u53d6\u5230\u7684\u6570\u636e\u4f20\u5230jsp\u9875\u9762\u53c2\u8003\u4e0b\u9762
\u6bd4\u5982\u5728\u540e\u53f0\u8bbe\u7f6e\u4e00\u4e2a\u503c\u5728request\u91cc\u9762\uff0crequest.setAttribute("param",param);
\u5728jsp\u9875\u9762\u5c31\u53ef\u4ee5\u8fd9\u6837\u83b7\u53d6\uff0c${param}; el\u8868\u8fbe\u5f0f\u3002
\u5728\u9875\u9762\u4f20\u503c\u5230\u540e\u53f0\u4e2d\uff0c\u7b2c\u4e00\u79cdpost\u65b9\u5f0f\uff0c\u63d0\u4ea4\u8868\u5355\u65f6\u3002
\u70b9\u51fb\u63d0\u4ea4\u6309\u94ae\u540e\u5728\u540e\u53f0\u83b7\u53d6Username,\u548cpassword
String username =request.getParamter("username");
String password=request.getParamter("password");
\u5982\u679c\u662fget\u65b9\u5f0f\u63d0\u4ea4\u7684\u8bdd
\u4e3e\u4e2a\u4f8b\u5b50\uff1a
\u67e5\u770b
\u90a3\u4e48\u5728\u540e\u5728\u83b7\u53d6\u4e5f\u662f\u4e00\u6837\u7684
String param1=request.getParamter("param1");
java:
request.setAttribute("test","abcd") ;
jsp:
<%
String test=(String)request.getAttribute("test");
out.print(test);
%>
你先在页面上用${test}看能不能打印出来
还有，你的请求是转发还是重定向？
绛旓細椤甸潰琛ㄥ崟璁剧疆绫诲瀷锛歟nctype="multipart/form-data"鍚庡彴閫氳繃org.springframework.web.multipart.MultipartFile澶勭悊涓婁紶
绛旓細鎶婃渶鍚鐨涓涓猤et(鈥渦ser鈥)鍘绘帀灏辫浜嗐傛渶鍚庝綘杩樻槸鍒嗘鏉ュ惂锛岃繖鏍峰啓浠ュ悗涓嶅ソ缁存姢銆1.鑾峰彇浣犳柟娉曠殑map HashMap<String,Object> map = (HashMap<String,Object>)request.getParameter("map"));2.閬嶅巻map涓殑鏁版嵁 User user = (User)map .get("user");Food food = (Food)map.get("foods");...
绛旓細濡傛灉娌℃湁鐢ㄦ鏋鐨璇 灏卞皢椤甸潰涓婄殑value缁戝畾鍒皉equest涓婇潰鍦╯ervlet涓幏鍙栵紝濡傛灉鏄痗ontroller鍚慾sp浼犲弬涔熶竴鏍锋垨鑰卻ession
绛旓細涓嶇煡閬撲綘鏈夋病鏈夊涔燡avaBean锛屽鏋滃涔犱簡灏卞ソ鐞嗚В锛氬湪test.jsp椤甸潰浣跨敤<jsp:useBean>鏍囩璋冪敤javabean 鍦╰est.jsp閲浣跨敤get()鏂规硶灏卞彲浠ュ緱鍒版暟鎹簡 //涓嬮潰鏄痶est.jsp <%@ page contentType="text/html;charset=GB2312"%> <jsp:useBean id="test" class="test.Testjavajsp" scope="session"/> <...
绛旓細request.setAttribute("page",page);绗竴涓猵age鏄疭tring绫诲瀷锛屾槸涓洪敭锛岀浜屼釜page鏄硷紝涔熷彲浠ユ槸String绫诲瀷锛屾垨鑰呭叾浠栫被鍨嬨傜劧鍚庡啀鐢 request.getRequestDispatcher("椤甸潰璺緞");杩欐牱杩欎釜page鍊煎氨浼犲埌鎸囧畾鐨勯〉闈浜嗐傚湪椤甸潰閲岄潰鐢╡l琛ㄨ揪寮忥紝${page} 灏卞彇鍒板间簡锛屽鏋減age閲屾湁age灞炴э紝鍐${page.age}...
绛旓細鍙互鍓嶅彴璺宠浆閫氳繃js绛夊疄鐜帮紝window.location='jsp';锛屼篃鍙互鍚庡彴璺宠浆request.getRequestDispatcher("浣鐨刯sp椤鍦板潃.jsp").forward(request,response);
绛旓細鍦ㄤ綘鐨刯sp鏂囦欢绗竴琛宲age鏍囩閲鍔犱笂isELIgnored="false"
绛旓細鎶婃暟鎹斁鍒皉equest瀵硅薄涓紝鍦椤甸潰涓帴鏀讹紱鐒跺悗鐢<%=鎺ユ敹鍙傛暟寮曠敤鍚%>灏卞彲浠ユ樉绀
绛旓細1銆侀鍏堝湪eclipse涓柊寤哄姩鎬佺綉绔欑▼搴忋2銆佸垱寤哄伐绋嬪悕绉 jQuery锛岀偣鍑籉insh銆3銆佸湪webContent涓嬭竟鏂板缓涓涓猦tml銆4銆佽緭鍏ュ悕绉癶tlloWorld銆5銆佸悓鏍鐨鍙抽敭鏂板缓涓涓猣ile锛屽彇鍚峧s浠ユ斁缃敤鍒扮殑js鏂囦欢銆6銆佹妸浣跨敤鍒扮殑jQuery鏂囦欢鏀惧叆js鏂囦欢澶逛腑銆7銆佹墦寮html椤甸潰銆8銆侀鍏堝紩鍏Query鏂囦欢锛屽苟鍦ㄤ唬鐮佷腑娣诲姞涓涓猙utton...
绛旓細鎺у埗鍙颁箣鎵浠ヤ細鎵撳嵃锛岃偗瀹氬啓浜唒rintln浜嗗晩锛屼綘鍘绘壘鍒版墦鍗鐨鍦版柟锛岀劧鍚庢妸琚墦鍗扮殑鏁版嵁灏佽鍒板璞閲浼犲埌鍓嶇锛岀敤el琛ㄨ揪寮忔妸瀹冨湪鍙栧嚭鏉ユ樉绀轰笉灏卞ソ浜
