spring mvc传数组参数
今天传数组参数，竟然不会用，记下来，加深印象。
1、页面ajax默认传参
function arrayParam(){
var contextPath = $('#contextPath').val();
var params = {};
params["names"] = ["张三", "李四", "王武"];
params["ages"] = [20, 26, 48];
var url = contextPath + "/array/getParamArray.do";
$.post(url, params, function(data){
alert(data);
});
}
controller层
@RequestMapping(value="/getParamArray")
public String getParamArray(@RequestParam("names[]") String[] names,
@RequestParam("ages[]") int[] ages){
LOG.info("getParamArray names={}, ages={}", Arrays.toString(names), Arrays.toString(ages));
return "viewName";
}
2、ajax传数组参数，默认在参数名后面加[]，这一点和表单传参不一样，如果想和表单传参一样，可以如下
function arrayParam2(){
var url = contextPath + "/array/getParamArray.do";
var params = {};
params["names"] = ["张三", "李四", "王武"];
params["ages"] = [20, 26, 48];
$.ajax({
url: url,
type: 'post',
traditional: true, // 和表单传数组参数一样。
data:params,
success:function(data){
alert(data);
}
});
}
这时controller层的参数名字没有后面的[]括号了。
@RequestMapping(value="/getParamArray2")
public String getParamArray2(@RequestParam("names") String[] names,
@RequestParam("ages") int[] ages){
LOG.info("getParamArray names={}, ages={}", Arrays.toString(names), Arrays.toString(ages));
return "viewName";
}
3、表单传数组参数，参数名字可以很灵活，后面可加[]，可不加，controller层的参数名字要对应起来
<form action="<%=contextPath %>/array/getParamArray2.do" method="post"> <table> <tr> <td>名字1</td><td><input name="names[]" value="张三" /></td> </tr> <tr> <td>名字2</td><td><input name="names[]" value="李四" /></td> </tr> <tr> <td>年龄1</td><td><input name="ages" value="30" /></td> </tr> <tr> <td>年龄2</td><td><input name="ages" value="25" /></td> </tr> <tr> <td><input type="reset" value="重置" /></td> <td><input type="submit" value="提交" /></td> </tr> </table> </form>
controller层的参数名字和form表单中的名字一致
@RequestMapping(value="/getParamArray3")
public String getParamArray3(@RequestParam("names[]") String[] names,
@RequestParam("ages") int[] ages){
LOG.info("getParamArray names={}, ages={}", Arrays.toString(names), Arrays.toString(ages));
return "viewName";
}