这是我的控制器代码示例。
控制器类
import java.util.ArrayList;
import org.CodeDaemons.dao.Document;
import org.CodeDaemons.dao.Documents;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
@Controller
public class Control {
@GetMapping("/")
public String getPage(Model model) {
Documents docs = new Documents();
docs.setDocument(new ArrayList<Document>());
docs.setId(12);
model.addAttribute("documents",new Documents());
return "document";
}
@PostMapping("/save")
public String save(@ModelAttribute("documents") Documents docs) {
if(docs.equals(null))
{
System.out.println("Bye");
}
else {
System.out.println("Error");
System.out.println(docs.getId());
System.out.println(docs.getDocument().size());
}
return "save";
}
}
作为我的模型属性的文档类
import java.util.List;
public class Documents {
private int id;
private List<Document> document;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public List<Document> getDocument() {
return document;
}
public void setDocument(List<Document> document) {
this.document = document;
}
}
＆安培;文件类
public class Document {
private String name;
private String printout;
private String orignal;
private String photocopy;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPrintout() {
return printout;
}
public void setPrintout(String printout) {
this.printout = printout;
}
public String getOrignal() {
return orignal;
}
public void setOrignal(String orignal) {
this.orignal = orignal;
}
public String getPhotocopy() {
return photocopy;
}
public void setPhotocopy(String photocopy) {
this.photocopy = photocopy;
}
}
Html模板
<HTML xmlns:th="http://www.thymeleaf.org">
<HEAD>
<TITLE> Document Submission </TITLE>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script>
$(document).ready(function(){
var counter = 1;
$("#addnew").click(function(event){
event.preventDefault();
counter++;
var newRow = jQuery('<tr><td><select name="doc.name"><option value="10" name="10">10th Mark-sheet</option><option value="" name="12">12th Mark-sheet</option>'+
'<option value="MSA" name="MSA">UG Mark-sheet(All Semesters)</option>'+
'<option value="UGM" name="UGM">UG Consolidated Mark-sheet</option>'+
'<option value="UGD" name="UGD">UG Degree/Provisional Degree</option>'+
'<option value="MC" name="MC">Migration Certificate</option>'+
'<option value="TC" name="TC">Transfer Certificate</option>'+
'</select></td>'+
'<td><select name="doc.original"><option value="yes">Yes</option><option value="due">Due</option><option value="NA">N/A</option></select></td><td>'+
'<select name="doc.photocopy"><option value="yes">Yes</option><option value="due">Due</option><option value="na">N/A</option></select></td><td>'+
'<select name="doc.printout"><option value="yes">Yes</option><option value="due">Due</option><option value="na">N/A</option></select></td><td><input type="date"></td><td><input type="date"></td></tr>');
jQuery('table.table-hover').append(newRow);
});
});
</script>
</HEAD>
<BODY>
<center><h1>Document Submission Record</h1></center>
<br/>
<!-- College Id No.</td><td> <input type="text" class="form-group">
Ref. Id</td><td> <input type="text" class="form-group">
Name</td> <input type="text" class="form-group">
<br/><br/>
-->
<form th:action="@{/save}" method="post" th:object="${documents}">
<center><h3><strong>Documents</strong></h3></center><br/>
<TABLE class="table table-hover" >
<tr>
<th >Document Name</th>
<th colspan="3">Document Type</th>
<th>Received Date</th>
<th>Due Date</th>
</tr>
<tr>
<td></td>
<td>Original</td>
<td>Photocopy</td>
<td>Printout</td>
<td></td>
<td></td>
</tr>
<tr th:each="doc :${documents.document}" th:field="*{document}">
<td>
<select name="doc.name">
<option value="10">10th Mark-sheet</option>
<option value="12">12th Mark-sheet</option>
<option value="MSA">UG Mark-sheet (All Semesters)</option>
<option value="UGM">UG Consolidated Mark-sheet</option>
<option value="UGD">UG Degree/Provisional Degree</option>
<option value="MC">Migration Certificate</option>
<option value="TC">Transfer Certificate</option>
</select>
</td>
<td>
<select name="doc.original" th:field="*{document.orignal}">
<option value="yes">Yes</option>
<option value="due">Due</option>
<option value="NA">N/A</option>
</select>
</td>
<td>
<select name="doc.photocopy" th:field="*{document.photocopy}">
<option value="yes">Yes</option>
<option value="due">Due</option>
<option value="NA">N/A</option>
</select>
</td>
<td>
<select name="doc.printout" th:field="*{document.printout}">
<option value="yes">Yes</option>
<option value="due">Due</option>
<option value="NA">N/A</option>
</select>
</td>
<td>
<input type="date">
</td>
<td>
<input type="date">
</td>
</tr>
</TABLE>
<button type="button" class="btn btn-primary" id="addnew">Add Row</button><br/><br/>
<br/>
<button type="submit" class="btn btn-primary">Save</button>
</form>
</BODY>
</HTML>
on Clicking Add Row按钮我想添加一个新的Row，它正在使用我的JQuery但是 我想在发布时绑定动态对象列表 页面＆amp;服务器会响应 将创建“文档”类的新对象。它包含的字段文档将包含带有名称，原始复印件和文件的文件列表。打印输出数据。在文档列表对象中添加索引是增量。最后点击保存按钮，页面将文档对象列表绑定到文档，然后将文档发送到控件，我可以解压缩对象
答案 0 :(得分：1)
首先，我还需要类似的东西来动态绑定列表对象，其中客户端可以增加列表的大小（用户可以触发事件以添加新行/删除行）。
我用Thymeleaf和jquery来做到这一点。
您需要在百里香叶中用th：name替换th：field
th:name="|documents.document[0].printout|"
这将创建索引值增加的新对象。 您不需要遍历列表，因为您将在用户添加新行之后添加对象。
在要在按钮上添加新div的jquery中，只需从th：name中删除th，因为该代码将直接附加在客户端，而thymeleaf呈现在服务器端。因此，在客户端，th：name无效。
var counter = 1;
$("#addnew").click(function(event){
event.preventDefault();
counter++;
var newRow = jQuery('<tr><td><select name='+ documents.document[counter].name +'><option value="10" name="10">10th Mark-sheet</option><option value="" name="12">12th Mark-sheet</option>''<option value="MSA" name="MSA">UG Mark-sheet(All Semesters)</option> <option value="UGM" name="UGM">UG Consolidated Mark-sheet</option> <option value="UGD" name="UGD">UG Degree/Provisional Degree</option> <option value="MC" name="MC">Migration Certificate</option> <option value="TC" name="TC">Transfer Certificate</option>'+
'</select></td>'+
'<td><select name='+documents.document[counter].original +'><option value="yes">Yes</option><option value="due">Due</option><option value="NA">N/A</option></select></td><td>'+
'<select name='+documents.document[counter].photocopy+'><option value="yes">Yes</option><option value="due">Due</option><option value="na">N/A</option></select></td><td>'+
'<select name="doc.printout"><option value="yes">Yes</option><option value="due">Due</option><option value="na">N/A</option></select></td><td><input type="date"></td><td><input type="date"></td></tr>');
jQuery('table.table-hover').append(newRow);
});
});
要删除行按钮，您需要在每行上添加删除行按钮，然后在该按钮上按一下更改计数器的值。