ajax 提交数组，mybatis 数组接受

function jinxingzhong() {
//                配送单编号:psd2017090103
                var divHtml = "";
                $.ajax({
                    type: "POST",
                    url: "/app/jinxingzhong",
                    traditional: true,
                    data: {
                        loginUserId: "549d321508db446e9bcaa477835fe5f1",
                        deliveryCode: "psd2017090102",// 配送单号
                        states: [1, 2] //1:已接单待提货 2:已提货待安装（这个参数是固定的）
                    },
                    dataType: 'json',
                    success: function (data) {
                        console.log(data);
                        console.log(typeof(data));
                        divHtml += "配送单编号:" + data[0].delivery_code + "<br>";
                        divHtml += "地址:" + data[0].provinceName + data[0].cityName + data[0].countryName + data[0].customer_addr + "<br>";
                        divHtml += "地址id(省，市，区):" + data[0].province + "/" + data[0].city + "/" + data[0].country + "/" + data[0].customer_addr + "<br><br>";
                        divHtml += "收货人:" + data[0].customer_id + data[0].customer_name + "<br>";
                        divHtml += "电话:" + data[0].customer_tel + "<br>";
                        divHtml += "state  (state 1 = 已接单待提货):" + data[0].state + "<br>";
                        divHtml += "state  (state 2 = 已提货待安装):" + data[0].state + "<br>";
                        console.log(divHtml);
                        $('#jinxingzhong').html(divHtml);
                    }, error: function () {
                        alert("错了");
                    }
                });
            }
注意：这里ajax参数要加上，traditional：true,不然后台controller，接受不到参数的

private final Logger logger = Logger.getLogger(this.getClass());
    
    @RequestMapping("/jinxingzhong")
    @ResponseBody
    public String jinxingzhong(String loginUserId, String deliveryCode, Integer[] states) {

        List<App> jinxingzhongList = appService.jinxingzhong(loginUserId, deliveryCode, states);

        logger.info(JSON.toJSONStringWithDateFormat(jinxingzhongList, "yyyy-MM-dd HH:mm:ss"));
        String jinxingzhongJsonStr = JSON.toJSONString(jinxingzhongList); // 将 list 转换成 json对象的字符串

        logger.info(JSON.toJSONStringWithDateFormat(jinxingzhongJsonStr, "yyyy-MM-dd HH:mm:ss"));
        return jinxingzhongJsonStr;
    }

　　

public interface AppMapper {
    /**
     * 获取接单信息
     *
     * @param loginUserId
     * @param states
     * @return
     */
    List<App> getJieDan(@Param("loginUserId") String loginUserId, @Param("states") Integer[] states, @Param("deliveryCode") String deliveryCode);

　　注意：@param 是绑定参数；

这里注意，collection ，里面的值，网上说，如果是list 就用list,数组就用 array ，我试过，这两个都不行，用绑定的参数对象才可以，item里的值是相当于

对数组的集合循环的变量，任意的；