Question

我试图让它从用户输入中打印出我的链接列表。此代码将对象添加到链接列表，因为我可以看到它被打印到控制台但它们没有打印到页面。感谢。

控制器：

@Controller
@RequestMapping("/addr")
public class AddressController {

    public Collection<Address> addresses = (Collection<Address>) Collections.synchronizedCollection(new LinkedList<Address>());

    /*  @RequestMapping("/new")
    public String getAddressForm() {
        System.out.println("Test"); 
        return "addressProject/addressBook";
    }
    */
    @RequestMapping("/new")
    public ModelAndView submitForm(String name, String email, String group,   String phoneNumber, String address){

        Address addr = new Address(name, email, group, phoneNumber, address);
        addresses.add(addr);
        ModelAndView modelandview = new ModelAndView("addressProject/addressBook");
        modelandview.addObject("addresses", addr);

        System.out.println("Address: name=" + addr.getName() + ", email=" +    addr.getEmail() + ", group=" + addr.getGroup() + ", phoneNumber=" + addr.getPhoneNumber() + ", address=" + addr.getAddress());

        return modelandview;    
    }
}

JSP：

<body>
<div class="container">
<form>


Name: <input type="text" name="name"><br>
<br/>
Email: <input type="text" name="email"><br>
<br/>
Group: <input type="text" name="group"><br>
<br/>
Phone Number: <input type="text" name="phoneNumber"><br>
<br/>
Address: <input type="text" name="address"><br>
<br/>
<input type="submit" />

</form>
 </div>

    <h2>Addresses v5</h2>

<c:forEach items="${addresses}" var="address"> 
 <tr>
    <td>${address}</td>

</tr>

Answer 1

您将地址添加到模型而不是列表：

modelandview.addObject("addresses", addr);

应该是：

modelandview.addObject("addresses", addresses);

JSP。

<table>
<c:forEach items="${addresses}" var="address"> 
 <tr>
    <td>${address}</td>
</tr>
</c:forEach>
<table>

确保已在JSP文件的顶部声明了taglib指令：

<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>

我的控制器不会在我的JSP上打印出一个列表

1 个答案: