我正在尝试在JSP中设置本地.
我以为我能做的事情如下:
<fmt:setLocale value="${param['local']}" scope="session"/>
关于这个主题的Java自己的页面似乎说得非常多.
但是,当我去执行它时,我得到:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: /pages/ResourceBundlesJSTL.jsp(11,0) According to TLD or attribute directive in tag file, attribute value does not accept any expressions
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:148)
org.apache.jasper.compiler.Validator$ValidateVisitor.checkXmlAttributes(Validator.java:1232)
org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:868)
org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1539)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2376)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2428)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2434)
org.apache.jasper.compiler.Node$Root.accept(Node.java:475)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2376)
org.apache.jasper.compiler.Validator.validateExDirectives(Validator.java:1787)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:211)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:360)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:594)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:316)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
note The full stack trace of the root cause …我有一个人们可以添加他们的东西的表格.但是,在这种形式中,如果他们输入JavaScript而不是文本,他们可以轻松地注入他们想做的任何事情.为了防止它,我可以将escapeXml设置为true,但是普通的HTML也会被转义.
<td><c:out value="${item.textValue}" escapeXml="true" /></td>
有没有其他方法来阻止JavaScript注入而不是将其设置为true？
我试图在jsf 2.0中使用带有hashmap或table的c foreach但是它没有工作所以我写了一个这样的简单代码仍然这个不工作....请帮助我失踪的地方...
<body>
<f:view>
<c:forEach var="i" begin="1" end="20" step="1" varStatus ="status">
<c:out value="#{i}" />
</c:forEach>
</f:view>
和输出为此我得到这样的..
#{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i} #{i}
我需要使用<fmt:formatNumber/>jstl标签格式化数字.输出应限制在小数点后3位,但不允许舍入,因此使用该属性maxFractionDigits="3"是不合适的,因为它会使数字四舍五入.
你有什么建议吗？
我有一个如下所示的代码:
在AnalyzeUserClient.jsp中:
<c:set var="arrayList"><%= (ArrayList<String>)request.getSession().getAttribute("arrayList") %></c:set>
var sessionId = [];
<c:forEach items=${arrayList} var="id">
sessionId.push("${id}"); // add them one at a time, assuming string values
</c:forEach>
但是,这一行:
sessionId.push("${id}");
似乎没有将值传递给数组"sessionId"(我在浏览器上查看了源代码).所以问题是,我该怎么做才能将值传递给数组？
编辑:我刚刚意识到存在一些问题,因为JSTL是服务器端而JavaScript是客户端.所以它有解决方法吗？
<div align="right">
<b> Connected:</b> <%=(String)session.getAttribute("CONNECTION_DBNAME")%>
</div>
我正在尝试使用JSP/JSTL迭代随机生成的整数的myList(数组).生成和存储整数的代码snipet位于我的servlet中.
另一方面,遍历字符串的数组列表(参见下面的代码)可以很好地工作,但是当我使用基于相同逻辑的数组进行迭代时,我的网页只显示任何无序的随机整数列表.
谢谢你帮助我
我的Servlet
package be.intec.servlets;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
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 be.intecbrussel.entities.Auto;
@WebServlet("/JSTLServlet")
public class JSTLServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private static final String VIEW = "WEB-INF/JSP/JSTL.jsp";
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
RequestDispatcher dispatcher = request.getRequestDispatcher(VIEW);
//=======below is the code using Array=====================================
int[] myList = new int[42]; …JSTL c:out这是什么版本JSP：
<%
PersonController personController = new PersonController();
personController.populate();
out.println(personController.getAllPeople().get(0).getName());
%>
其背后运行的代码：
在PersonController：
List<Person> allPeople = new ArrayList<Person>();
public void populate() {
Person person = new Person();
person.setName("Jeff");
allPeople.add(person);
}
public List<Person> getAllPeople() {
return allPeople;
}
public void setAllPeople(List<Person> allPeople) {
this.allPeople = allPeople;
}
在Person：
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
我想发送list元素(位于我的JSP上):
${mylist}
对于我的自定义标签mytag.tag,这是我在JSP页面中的内容:
<tags:mytag list="${mylist}" ></tagsmytag>
但是当我这样发送它时,我无法访问它的元素,这里是mytag.tag:
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="springForm"%>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@attribute name="list" required="true"%>
<c:forEach items="${pageScope.list}" var="listVar">
<option value="${listVart[0]}">${listVar[1]}</option>
</c:forEach>
后端控制器:
@ModelAttribute("mylist")
List<Permission> getAllActivePermissions(){
return permissionService.getAllActivePermissions();
}
例外是:
javax.el.PropertyNotFoundException: Property '0' not found on type java.lang.String
at javax.el.BeanELResolver$BeanProperties.get(BeanELResolver.java:237)
at javax.el.BeanELResolver$BeanProperties.access$400(BeanELResolver.java:214)
at javax.el.BeanELResolver.property(BeanELResolver.java:325)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:85)
at org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:104)
at org.apache.el.parser.AstValue.getValue(AstValue.java:183)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:185)
at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:1026)
at org.apache.jsp.tag.webmultiple_tag._jspx_meth_c_005fforEach_005f1(webmultiple_tag.java:454)
at org.apache.jsp.tag.webmultiple_tag._jspx_meth_springForm_005fselect_005f1(webmultiple_tag.java:413)
at org.apache.jsp.tag.webmultiple_tag._jspx_meth_c_005fotherwise_005f0(webmultiple_tag.java:375)
at org.apache.jsp.tag.webmultiple_tag.doTag(webmultiple_tag.java:222)
at org.apache.jsp.WEB_002dINF.pages.roles.newRole_jsp._jspx_meth_tags_005fmultiple_005f0(newRole_jsp.java:674)
at org.apache.jsp.WEB_002dINF.pages.roles.newRole_jsp._jspx_meth_springForm_005fform_005f0(newRole_jsp.java:566)
at org.apache.jsp.WEB_002dINF.pages.roles.newRole_jsp._jspService(newRole_jsp.java:378)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) …我有下面的DAO文件.
package org.DAO;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.RequestDispatcher;
import org.bean.UserBean;
import org.code.general.DBConnection;
public class GetDataDAO {
DBConnection dbConnection = new DBConnection();
public List<UserBean> list() throws Exception {
List<UserBean> userBeans = new ArrayList<UserBean>();
try {
Connection conn = dbConnection.conn;
Statement stmt = dbConnection.stmt;
ResultSet rs = dbConnection.rs;
PreparedStatement ps = dbConnection.ps;
String excelPath = dbConnection.excelPath;
String queryString = null;
dbConnection.createClassForName();
conn = DriverManager.getConnection(
"jdbc:odbc:Driver={Microsoft Excel Driver (*.xls)};DBQ=" + …在jsp中
<table width="100%" id='table1' border="0" cellspacing="2" cellpadding="2">
<tr class="tab-highlighted-2">
<td class="tab-highlighted-2" width="10%">
<div align="left">Project ID</div>
</td>
<td class="tab-highlighted-2" width="10%">
<div align="left">Project Name</div>
</td>
<td class="tab-highlighted-2" width="20%">
<div align="left">Cost Center</div>
</td>
<td class="tab-highlighted-2" width="20%">
<div align="left">Manager</div>
</td>
</tr>
<tr class="bg-row1">
<c:forEach items="${resultList}" var="resultList">
<td class="td-highlighted-2">
<div align="left"><a href="UpdateProject.html">${resultList.Projid}</a></div>
</td>
<td class="td-highlighted-2">
<div align="left">${resultList.Projname}</div>
</td>
<td class="td-highlighted-2">
<div align="left">${resultList.Cost}</div>
</td>
<td class="td-highlighted-2">
<div align="left">${resultList.Manager}</div>
</td>
</tr>
</table>
在道
public final class SearchProjDAO
{
private static InitialContext context;
String CLASS_NAME="DBConnectionFactory";
public ArrayList submitProjectDetails(SearchProjVO …我有这段代码如下
while(children.hasNext())
{
Page child1=children.next();
}
我需要使用for循环或每个循环在我的jstl中使用此代码.
我可以知道我们该怎么做吗？
我对以下行为感到困惑。变量标志从控制器传递到jsp代码：
flag: <c:out value="${requestScope.flag}"/>
flag eq 'Y': ${requestScope.flag eq 'Y'}
flag == 'Y': ${requestScope.flag=='Y'}
flag==Y: ${requestScope.flag==Y}
情况1：标志未传递到视图（输出）：
flag:
flag eq 'Y': false
flag == 'Y': false
flag==Y: true
情况2：将值“ Y”的标志传递给视图：
flag: Y
flag eq 'Y': true
flag == 'Y': true
flag==Y: false