Spring 在表中显示SQL行
如何在JSP表中显示SQL数据库中的所有行 以便一行表示表中的一个“td”标记。下面的代码仅显示数据库中的最后一行Spring 在表中显示SQL行,spring,spring-mvc,html-table,Spring,Spring Mvc,Html Table,如何在JSP表中显示SQL数据库中的所有行 以便一行表示表中的一个“td”标记。下面的代码仅显示数据库中的最后一行 CartController.java: @RequestMapping(value="/cart.html", method = RequestMethod.GET) public ModelAndView cartPage(Model model) throws SQLException, ClassNotFoundException { PreparedStatem
CartController.java
:
@RequestMapping(value="/cart.html", method = RequestMethod.GET)
public ModelAndView cartPage(Model model) throws SQLException, ClassNotFoundException {
PreparedStatement pst;
ResultSet rs;
Connection con;
con = db.getConnect();
pst = con.prepareStatement("SELECT * FROM onlineshop.cart");
rs = pst.executeQuery();
while (rs.next()) {
model.addAttribute("ID", rs.getString(1));
model.addAttribute("picture", rs.getString(2));
model.addAttribute("name", rs.getString(3));
model.addAttribute("company", rs.getString(4));
model.addAttribute("type", rs.getString(5));
model.addAttribute("price", rs.getString(6));
}
ModelAndView cart = new ModelAndView("Cart");
return cart;
}
下面是Cart.jsp
的片段:
<div style="padding-right: 40px">
<table border="1">
<tr>
<td>ID</td>
<td>Product</td>
<td>Name</td>
<td>Company</td>
<td>Type</td>
<td>Price</td>
<td>Action</td>
</tr>
<tr>
<td>${ID}</td>
<td><img src="${picture}"/></td>
<td>${name}</td>
<td>${company}</td>
<td>${type}</td>
<td>${price}</td>
<td></td>
</tr>
</table>
</div>
身份证件
产品
名称
单位
类型
价格
行动
${ID}
${name}
${company}
${type}
${price}
错误:
type Exception report
message An exception occurred processing JSP page /WEB-INF/Cart.jsp at line 74
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: An exception occurred processing JSP page /WEB-INF/Cart.jsp at line 74
71: </tr>
72: <c:forEach var="cart" items="carts">
73: <tr>
74: <td>${cart.getID()}</td>
75: <td><img src="${cart.getPicture()}"/></td>
76: <td>${cart.getName()}</td>
77: <td>${cart.getCompany()}</td>
Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:574)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1243)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:969)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:871)
javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:845)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
javax.el.MethodNotFoundException: Method not found: class java.lang.String.getID()
javax.el.Util.findWrapper(Util.java:351)
javax.el.Util.findMethod(Util.java:213)
javax.el.BeanELResolver.invoke(BeanELResolver.java:156)
org.apache.jasper.el.JasperELResolver.invoke(JasperELResolver.java:147)
org.apache.el.parser.AstValue.getValue(AstValue.java:159)
org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)
org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:943)
org.apache.jsp.WEB_002dINF.Cart_jsp._jspx_meth_c_005fforEach_005f0(Cart_jsp.java:237)
org.apache.jsp.WEB_002dINF.Cart_jsp._jspService(Cart_jsp.java:190)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1243)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:969)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:871)
javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:845)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.29 logs.
类型异常报告
消息在第74行处理JSP页面/WEB-INF/Cart.JSP时发生异常
说明服务器遇到内部错误,无法满足此请求。
例外
org.apache.jasper.jaspereException:在第74行处理JSP页面/WEB-INF/Cart.JSP时发生异常
71:
72:
73:
74:${cart.getID()}
75:
76:${cart.getName()}
77:${cart.getCompany()}
堆栈跟踪:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:574)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:476)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
javaservlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1243)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:969)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:871)
javaservlet.http.HttpServlet.service(HttpServlet.java:648)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:845)
javaservlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
根本原因
javax.el.MethodNotFoundException:找不到方法:class java.lang.String.getID()
javax.el.Util.FindRapper(Util.java:351)
javax.el.Util.findMethod(Util.java:213)
javax.el.BeanELResolver.invoke(BeanELResolver.java:156)
org.apache.jasper.el.JasperELResolver.invoke(JasperELResolver.java:147)
org.apache.el.parser.AstValue.getValue(AstValue.java:159)
org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)
org.apache.jasper.runtime.PageContextImpl.proprietaryeevaluate(PageContextImpl.java:943)
org.apache.jsp.WEB_002dINF.Cart_jsp._jspx_meth_c_005fforEach_005f0(Cart_jsp.java:237)
org.apache.jsp.WEB\u 002dINF.Cart\u jsp.\u jsp服务(Cart\u jsp.java:190)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javaservlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:438)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
javaservlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:168)
org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:303)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1243)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1027)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:969)
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:871)
javaservlet.http.HttpServlet.service(HttpServlet.java:648)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:845)
javaservlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
注意,Apache Tomcat/8.0.29日志中提供了根本原因的完整堆栈跟踪。
因为您正在覆盖购物车信息,显然最后一行赢了赌注。您应该在控制器中维护购物车的列表,并将其推送到您的视图中。然后在视图中,遍历它们并将它们放在每一行中
假设您有这样一个Cart
类:
public class Cart {
private String ID;
private String picture;
private String name;
private String company;
private String type;
private String price;
// getters and setters
}
更改控制器以创建购物车
的列表
,并将每个购物车
添加到列表中:
...
List<Cart> carts = new ArrayList<>();
while (rs.next()) {
Cart cart = new Cart();
cart.setID(rs.getString(1));
cart.setPicture(rs.getString(2));
cart.setName(rs.getString(3));
cart.setCompany(rs.getString(4));
cart.setType(rs.getString(5));
cart.setPrice(rs.getString(6));
carts.add(cart);
}
model.addAttribute("carts", carts);
...
。。。
列表购物车=新的ArrayList();
while(rs.next()){
购物车=新购物车();
cart.setID(rs.getString(1));
cart.setPicture(rs.getString(2));
cart.setName(rs.getString(3));
cart.setCompany(rs.getString(4));
cart.setType(rs.getString(5));
购物车定价(rs.getString(6));
carts.add(cart);
}
model.addAttribute(“carts”,carts);
...
并且认为:
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
...
<c:forEach var="cart" items="carts">
<tr>
<td>${cart.getID()}</td>
<td><img src="${cart.getPicture()}"/></td>
<td>${cart.getName()}</td>
<td>${cart.getCompany()}</td>
<td>${cart.getType()}</td>
<td>${cart.getPrice()}</td>
<td></td>
</tr>
</c:forEach>
...
${cart.getID()}
${cart.getName()}
${cart.getCompany()}
${cart.getType()}
${cart.getPrice()}
因为您正在覆盖购物车信息,显然最后一行赢了赌注。您应该维护一个L