spring MVC 后端 接收 前端 批量添加的数据（简单示例）
第一种方式：(使用ajax的方式)
前端代码：
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<script src="${pageScope.request.ContextPath}/js/jquery-3.3.1.min.js"></script>
<table>
<thead>
<th>编号</th>
<th>姓名</th>
<th>性别</th>
<th>学历</th>
<th>增加</th>
<th>移除</th>
</thead>
<tbody id="data1">
<tr>
<td><input type="text" name="empId"></td>
<td><input type="text" name="empName"></td>
<td>
<select name="empSex">
<option value="男">男</option>
<option value="女">女</option>
</select>
</td>
<td>
<select name="eduEducation">
<option value="本科">本科</option>
<option value="硕士">硕士</option>
<option value="博士">博士</option>
</select>
</td>
<td><input type="button" οnclick="addElement(this);" value="+"></td>
<td><input type="button" value="-" οnclick="delElement(this)"></td>
</tr>
</tbody>
</table>
<p><input type="button" id="btn_add" value="批量添加"></p>
</body>
<script>
//批量添加
$("#btn_add").click(function () {
var data=[];
//循环tbody里面所有的tr，并取出每行相对的值,填充到数组中
$("#data1 tr").each(function (index,obj) {
data.push({
empId:$("input[name='empId']",obj).val(),
empName:$("input[name='empName']",obj).val(),
empSexual:$("select[name='empSexual'] option:selected",obj).val(),
eduEducation:$("select[name='eduEducation'] option:selected",obj).val()
})
})
//发起post请求
$.post({
url:"",
contentType:"application/json",
data:JSON.stringify(data),//将对象转为字符
success:function (text) {
alert(text.msg);
}
});
})
//复制tr节点的内容
function addElement(x){
$(x).parents("tr").clone().appendTo($("#data1"));
}
//移除tr节点
function delElement(x){
$(x).parents("tr").remove();
}
</script>
</html>
后端代码：
//访问test页面
@RequestMapping(path="/c",method = RequestMethod.GET)
public String test1(){
return "test1";
}
//接收test页面的字符数组
@RequestMapping(path = "/c",method = RequestMethod.POST,produces = "application/json;charset=utf-8")
@ResponseBody
public String Receive(@RequestBody List<Employee> list){ //Employee可以改为Object
for (Employee employee : list) {
System.out.println(employee);
}
return "{\"msg\":\"添加成功\"}";
}
实体类
package com.oukele.model;
import java.math.BigDecimal;
public class Employee {
private String empId;
private String empName;
private String empSexual;
private String eduEducation;
public String getEmpId() {
return empId;
}
public void setEmpId(String empId) {
this.empId = empId == null ? null : empId.trim();
}
public String getEmpName() {
return empName;
}
public void setEmpName(String empName) {
this.empName = empName == null ? null : empName.trim();
}
public String getEmpSexual() {
return empSexual;
}
public void setEmpSexual(String empSexual) {
this.empSexual = empSexual == null ? null : empSexual.trim();
}
public String getEduEducation() {
return eduEducation;
}
public void setEduEducation(String eduEducation) {
this.eduEducation = eduEducation == null ? null : eduEducation.trim();
}
@Override
public String toString() {
return "Employee{" +
"empId='" + empId + '\'' +
", empName='" + empName + '\'' +
", empSexual='" + empSexual + '\'' +
", eduEducation='" + eduEducation + '\'' +
'}';
}
}
演示：
后台接收后打印的值：
第二种方式：(使用form表单)
创建一个实体类 将Employee封装起来
FormBean
package com.oukele.model;
import java.util.List;
public class FormBean {
private List<Employee> employeeList;
public List<Employee> getEmployeeList() {
return employeeList;
}
public void setEmployeeList(List<Employee> employeeList) {
this.employeeList = employeeList;
}
}
前端代码：
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<script src="${pageScope.request.ContextPath}/js/jquery-3.3.1.min.js"></script>
<form action="/zhoumo/c" method="post" id="myform">
<table>
<thead>
<th>编号</th>
<th>姓名</th>
<th>性别</th>
<th>学历</th>
<th>增加</th>
<th>移除</th>
</thead>
<tbody id="data1">
<tr>
<td><input type="text" name="empId"></td>
<td><input type="text" name="empName"></td>
<td>
<select name="empSexual">
<option value="男">男</option>
<option value="女">女</option>
</select>
</td>
<td>
<select name="eduEducation">
<option value="本科">本科</option>
<option value="硕士">硕士</option>
<option value="博士">博士</option>
</select>
</td>
<td><input type="button" οnclick="addElement(this);" value="+"></td>
<td><input type="button" value="-" οnclick="delElement(this)"></td>
</tr>
</tbody>
</table>
</form>
<p><input type="button" id="btn_add" value="批量添加"></p>
</body>
<script>
$("#btn_add").click(function () {
//获取行
var rows = $("#data1 tr");
//循环每一行
$(rows).each(function (index,obj) {
//将每一行中的 input[type='text'],select的对象取出,再进行一次循环
$("input[type='text'],select",obj).each(function (i,o) {
//当前对象 添加 name 属性值 name =employeeList[索引].对应的属性值
$(o).attr("name","employeeList["+index+"]."+$(o).attr("name"));
})
});
//提交
$("#myform").submit();
})
//复制tr节点的内容
function addElement(x){
$(x).parents("tr").clone().appendTo($("#data1"));
}
//移除tr节点
function delElement(x){
$(x).parents("tr").remove();
}
</script>
</html>
后台代码：
//访问test页面
@RequestMapping(path="/c",method = RequestMethod.GET)
public String test1(){
return "test1";
}//接收test页面的form传递过来的值
@RequestMapping(path = "/c",method = RequestMethod.POST)
public String Receive1(FormBean formBean){
for (Employee employee : formBean.getEmployeeList()) {
System.out.println(employee);
}
//重定向
return "redirect:/zhoumo/c";
}
演示：
前端 form表单 提交
后端：