搜索框回写乱码是什么原因?
当搜索输入“白色”之后,搜索出“白色”的商品,此时搜索框里的中文“白色”正常显示,但然后点击下一页后搜索框的回写乱码是什么原因?
这是我的ListServlet.java代码:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 | package com.yuan.shop.action; import com.yuan.shop.bean.Article; import com.yuan.shop.bean.ArticleType; import com.yuan.shop.bean.Pager; import com.yuan.shop.service.ShopService; import org.springframework.util.StringUtils; import org.springframework.web.context.WebApplicationContext; import org.springframework.web.context.support.WebApplicationContextUtils; import javax.servlet.ServletContext; 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 java.io.IOException; import java.util.List; @WebServlet ( "/list" ) public class ListServlet extends HttpServlet { /* 注意这里不能使用注解的形式(如@Autowired、@Resource)对业务层对象进行注入, 因为Servlet本身对象是没有交给Spring容器对象管理的 */ // @Resource private ShopService shopService = null ; //定义业务层对象 private HttpServletRequest request; private HttpServletResponse response; //在Servlet启用之前会调用这个方法 @Override public void init() throws ServletException { super .init(); //在这个方法中获取Spring容器,然后从容器中得到业务层对象 ServletContext servletContext= this .getServletContext(); //首先获得ServletContext上下文对象 //获取一个Web目录的上下文对象,这其实就是一个Spring容器对象 WebApplicationContext webApplicationContext=WebApplicationContextUtils.getWebApplicationContext(servletContext); //通过Spring容器得到这个bean(对象),即这个业务层对象 shopService= (ShopService) webApplicationContext.getBean( "shopService" ); } @Override protected void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException { try { this .request=req; this .response=res; //再获取元素内容之前先设置编码格式 request.setCharacterEncoding( "UTF-8" ); //response.setCharacterEncoding("UTF-8"); String method=request.getParameter( "method" ); switch (method){ case "getAll" : getAll(); //当获取的方式是“getAll”,则调用getAll()方法 break ; } } catch (Exception e) { e.printStackTrace(); } } private void getAll() throws ServletException, IOException { Pager pager= new Pager(); //实例化一个分页数据对象 //获取当前页码 String pageIndex=request.getParameter( "pageIndex" ); if (!StringUtils.isEmpty(pageIndex)) //如果获取的当前页码不为空 { pager.setCurrentPageNum(Integer.parseInt(pageIndex)); } //获取二级类型参数 String secondType=request.getParameter( "secondType" ); //获取搜索框中输入的标题 String title=request.getParameter( "title" ); //把用户点击的二级类型也传过去,以实现下拉框的二级类型的选中显示 request.setAttribute( "secondType" ,secondType); //把用户输入在搜索框中的标题回传回去 request.setAttribute( "title" ,title); //获取一级类型参数 String typeCode=request.getParameter( "typeCode" ); if (!StringUtils.isEmpty(typeCode)) //如果所获取的商品类型号不为空 { //根据商品的一级类型获取商品的二级类型(二级类型编号是一级类型编号的长度加4) List<ArticleType> secondArticleTypes=shopService.loadSecondArticleTypes(typeCode,typeCode.length()+ 4 ); request.setAttribute( "typeCode" ,typeCode); //注意:把一级类型也传过去,因为二级类型查询需要根据一级类型(否则会出错) request.setAttribute( "secondTypes" ,secondArticleTypes); } //查询商品的一级类型信息 List<ArticleType> firstArticleTypes= shopService.loadFirstArticleTypes(); //查询所有商品 List<Article> articles=shopService.SearchArticles(typeCode,secondType,title,pager); request.setAttribute( "firstArticleTypes" ,firstArticleTypes); request.setAttribute( "pager" ,pager); //把分页数据对象传过去 request.setAttribute( "articles" ,articles); request.getRequestDispatcher( "/WEB-INF/jsp/list.jsp" ).forward(request,response); } } |
list.jsp代码
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 | <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <%@ taglib prefix="fmt" uri="http://java.sun.com/jsp/jstl/fmt" %> <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %> <!DOCTYPE html> < html lang = "zh_CN" > < head > < meta charset = "utf-8" > < meta http-equiv = "X-UA-Compatible" content = "IE=edge" > < meta name = "viewport" content = "width=device-width, initial-scale=1" > < title >商品首页</ title > <!-- Bootstrap core CSS --> <%-- c:url 标签的作用: 1.自动在URL的前面加上context path 2.如果客户端禁用了Cookie,自动使用URL重写技术,把jsessionid放到url的分号后面 /taobao/resources/bootstrap/css/bootstrap.css;jsessionid=xxxxx --%> < link href = "<c:url value=" /resources/bootstrap/css/bootstrap.css"/>" rel="stylesheet" /> < link href = "${pageContext.request.contextPath }/resources/css/taobao.css" rel = "stylesheet" /> < script type = "text/javascript" src = "${pageContext.request.contextPath }/resources/My97DatePicker/WdatePicker.js" ></ script > </ head > < body > <!-- 横幅导航条开始 --> < nav class = "navbar navbar-fixed-top navbar-inverse" role = "navigation" > < div class = "container" > < div class = "navbar-header" > < a class = "navbar-brand " style = "color: red" href = "<c:url value=" /list? method = getAll "/>">电商系统,卖家系统-商品管理</ a > </ div > < div id = "navbar" class = "collapse navbar-collapse" > < ul class = "nav navbar-nav navbar-right" > < li >< a href = "<c:url value=" /logout"/>">退出</ a ></ li > </ ul > </ div > </ div > </ nav > <!-- 横幅导航条结束 --> <!-- 横幅下方的主体开始 --> < div class = "container" > < div class = "row row-offcanvas row-offcanvas-right" > <!-- 侧边导航开始 一级类型的 --> < div class = "col-xs-6 col-sm-3 sidebar-offcanvas" id = "sidebar" role = "navigation" > < div class = "list-group" > < c:forEach items = "${requestScope.firstArticleTypes }" var = "type" > < a href = "<c:url value=" /list? method = getAll &typeCode=${type.code }"/>" class="list-group-item < c:if test = "${type.code eq param.typeCode or top.code eq fn:substring(param.typeCode, 0, 4) }" >active</ c:if >">${type.name }</ a > </ c:forEach > </ div > </ div > <!-- 侧边导航结束 --> <!-- 内容主体开始 --> < div class = "col-xs-12 col-sm-9" > < p class = "pull-right visible-xs" > < button type = "button" class = "btn btn-primary btn-xs" data-toggle = "offcanvas" >显示导航条</ button > </ p > < div class = "alert alert-info" role = "alert" > < div > < form action = "<c:url value=" /list? method = getAll "/>" method="post"> < table class = "table-condensed" > < tbody > < tr > < td > < select class = "btn btn-default" placeholder = "类型" id = "secondType" name = "secondType" > < option value = "" >==请选择类型==</ option > < c:forEach items = "${requestScope.secondTypes }" var = "t" > < option value = "${t.code}" >${t.name}</ option > </ c:forEach > </ select > </ td > < td > <!-- 如果当前选择了商品的类型,仅在该类型下面进行搜索 --> < input type = "hidden" name = "typeCode" value = "${typeCode}" /> < div class = "input-group" > < input type = "text" name = "title" value = "${title}" class = "form-control" placeholder = "搜索商品的标题" /> < div class = "input-group-btn" > < button class = "btn" type = "submit" > < span class = "glyphicon glyphicon-search" ></ span > </ button > </ div > </ div > </ td > < td > < button type = "button" class = "btn btn-primary" data-toggle = "modal" data-target = "#exampleModal" data-whatever = "添加商品" >添加商品</ button > < span style = "color: red;" >${tip}</ span > </ td > </ tr > </ tbody > </ table > </ form > </ div > </ div > <!-- 展示商品数据 --> < div class = "row" > < c:forEach items = "${articles }" var = "a" > < div class = "col-xs-6 col-lg-4" > < span class = "thumbnail" > < a class = "label label-danger" href = "<c:url value=" /list? method = deleteById &id=${a.id }&typeCode=${typeCode}&secondType=${secondType}&title=${title}"/>">删除</ a > < a class = "label label-success" href = "<c:url value=" /list? method = showUpdate &id=${a.id }&typeCode=${typeCode}&secondType=${secondType}&title=${title}"/>">修改</ a > < a href = "<c:url value=" /list? method = preArticle &id=${a.id }"/>"> < img src = "<c:url value=" /resources/images/article/${a.image }"/>" alt="..."> < p style = "height: 20px; overflow: hidden;" >${a.title }</ p > </ a > < p > < span class = "price" >${a.price }</ span > < c:if test = "${not empty a.discount }" > < span class = "discountPrice" >惊爆价: < fmt:formatNumber value = "${a.price * a.discount / 10 }" pattern = "0.00" ></ fmt:formatNumber >(${a.discount }折)</ span > </ c:if > </ p > </ span > </ div > </ c:forEach > </ div > < div class = "row" > <!-- 分页标签 --> < nav > < ul class = "pagination" > < li >< a href = "${pageContext.request.contextPath}/list?method=getAll&typeCode=${typeCode}&secondType=${secondType}&title=${title}&pageIndex=1" >首页</ a ></ li > < li >< a href = "${pageContext.request.contextPath}/list?method=getAll&typeCode=${typeCode}&secondType=${secondType}&title=${title}&pageIndex=${pager.currentPageNum-1}" >上一页</ a ></ li > < li >< a href = "${pageContext.request.contextPath}/list?method=getAll&typeCode=${typeCode}&secondType=${secondType}&title=${title}&pageIndex=${pager.currentPageNum+1}" >下一页</ a ></ li > < li >< a href = "${pageContext.request.contextPath}/list?method=getAll&typeCode=${typeCode}&secondType=${secondType}&title=${title}&pageIndex=${pager.totalPages}" >尾页</ a ></ li > < li > < a >总数据量${pager.totalCount},当前< span style = "color: red;" >${pager.currentPageNum}</ span >/${pager.totalPages}</ a > </ li > </ ul > </ nav > </ div > </ div > </ div > < hr > < footer > < p >© 版权所有,欢迎借鉴</ p > </ footer > </ div > <!-- 弹出框 --> < div class = "modal fade" id = "exampleModal" > < div class = "modal-dialog" > < div class = "modal-content" > < div class = "modal-header" > < button type = "button" class = "close" data-dismiss = "modal" aria-label = "Close" >< span aria-hidden = "true" >×</ span ></ button > < h4 class = "modal-title" id = "exampleModalLabel" >添加物品</ h4 > </ div > < div class = "modal-body " > < div align = "center" > < span style = "color:red;" ></ span > < form name = "articleform" class = "form-horizontal" action = "<c:url value=" /list? method = addArticle &typeCode=${typeCode}&secondType=${secondType}&title=${title} "/>" method="post" enctype="multipart/form-data"> < div class = "form-group" > < label class = "col-sm-3 control-label" >类型编号:</ label > < div class = "col-sm-4" > < select class = "form-control" name = "code" id = "addTypeCode" > < c:forEach items = "${articleTypes}" var = "type" > < option value = "${type.code}" >${type.name}</ option > </ c:forEach > </ select > </ div > </ div > < div class = "form-group" > < label class = "col-sm-3 control-label" >标题:</ label > < div class = "col-sm-4" > < input type = text class = "form-control" name = "titleStr" size = "50" > </ div > </ div > < div class = "form-group" > < label class = "col-sm-3 control-label" >供应商:</ label > < div class = "col-sm-4" > < input type = text class = "form-control" name = "supplier" size = "50" > </ div > </ div > < div class = "form-group" > < label class = "col-sm-3 control-label" >地区:</ label > < div class = "col-sm-4" > < input type = text class = "form-control" name = "locality" size = "50" > </ div > </ div > < div class = "form-group" > < label class = "col-sm-3 control-label" >价格:</ label > < div class = "col-sm-4" > < input type = text class = "form-control" name = "price" size = "50" > </ div > </ div > < div class = "form-group" > < label class = "col-sm-3 control-label" >库存数量:</ label > < div class = "col-sm-4" > < input type = text class = "form-control" name = "storage" size = "50" > </ div > </ div > < div class = "form-group" > < label class = "col-sm-3 control-label" >上架日期:</ label > < div class = "col-sm-4" > < input class = "form-control" name = "putawayDate" id = "putawayDate" style = "width: 180px;" type = "text" class = "Wdate" onclick = "WdatePicker({'lang':'zh-cn','skin':'whyGreen','dateFmt':'yyyy-MM-dd HH:mm:ss'})" size = "50" > </ div > </ div > < div class = "form-group" > < label class = "col-sm-3 control-label" >物品封面:</ label > < div class = "col-sm-4" > < input type = "file" class = "form-control" name = "image" size = "40" /> </ div > </ div > < div class = "form-group" > < label class = "col-sm-3 control-label" >书面描述:</ label > < div class = "col-sm-6" > < textarea rows = "5" cols = "60" class = "form-control" name = "description" ></ textarea > </ div > </ div > < table > < tr > < td >< input type = "submit" class = "btn btn-success btn-sm" value = "提交" /></ td > < td > < input type = "button" class = "btn btn-danger btn-sm" data-dismiss = "modal" value = "取消" /></ td > </ tr > </ table > </ form > </ div > </ div > </ div > </ div > </ div > </ div > <!-- 横幅下方的主体结束 --> <!-- 一般来讲,css必须在head里面引入,因为页面加载完成,就需要显示正确的样式 --> <!-- js一般在页面最后面加载,等页面布局都完成以后,再来处理js文件! --> <!-- Bootstrap core JavaScript ================================================== --> <!-- Placed at the end of the document so the pages load faster --> < script src = "${pageContext.request.contextPath }/resources/jquery/jquery.js" ></ script > < script src = "${pageContext.request.contextPath }/resources/bootstrap/js/bootstrap.js" ></ script > < script src = "${pageContext.request.contextPath }/resources/js/taobao.js" ></ script > < script type = "text/javascript" > //在整个加载完后再为二级类型绑定切换事件 $("#secondType").change(function () { window.location="${pageContext.request.contextPath}/list?method=getAll&typeCode=${typeCode}&secondType="+this.value; }); //把二级类型选中 $("#secondType").val("${secondType}"); </ script > </ body > </ html > |
在request获取元素之前也设置了编码格式,list头文件也设置了编码格式,为何还会出现回写乱码呢?
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