<c:forEach />

1遍历List<Map<String, Object>>

后台代码

@RequestMapping("/model")
public ModelAndView prdModelSearch() {
    Map<String, Object> data = new HashMap<>();
    List<Map<String, Object>> model = modelService.getModel();  //此处map的key名字叫model
    data.put("model", model); //用这种方法传到前台，forEach取值时，按data的key名称取值，如下面items="${model}"
    
    return new ModelAndView("/model", data);
 }
    

前台代码

<select class="form-control" id="model">
    <option value="">请选择</option>
    <c:forEach items="${model}" var="item">
        <option value="${item.model}">${item.model}</option>  ////此处的model为后台map(也即model) 的key的名称
    </c:forEach>
</select>

2遍历List

后台代码

@RequestMapping("/model")
public ModelAndView prdModelSearch() {
    Map<String, Object> data = new HashMap<>();
    List<String> model = modelService.getModel()  //此处的model是List
    data.put("model", model);
    
    return new ModelAndView("/model", data);
 }

前台代码

<SELECT name="model" id="model" multiple="multiple">
    <c:forEach items="${model}" var="item">
        <option value="${item}">${item}</option>
    </c:forEach>
</SELECT>   

3遍历Map

后台代码

@RequestMapping("/model")
public ModelAndView prdModelSearch() {
    Map<String, Object> data = new HashMap<>();
    Map<String, String> model = modelService.getModel()  //此处的model是List
    data.put("model", model);
    
    return new ModelAndView("/model", data);
 }

前台代码

<SELECT name="model" id="model" multiple="multiple">
    <c:forEach items="${model}" var="item">
        <option value="${item.key}">${item.value}</option> //map的键值对
    </c:forEach>
</SELECT>