POST JSON数组转LIST,用的是fastjson包

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import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;

@PostMapping(value = "/test")
public void insert(HttpServletRequest request) {
    String data = request.getParameter("division");

    JSONArray jsonarray = JSONArray.parseArray(data);
    List<District> listGet = JSONObject.parseArray(jsonarray.toJSONString(), District.class);
    List<District> list = new ArrayList<>(listGet.size());
    for (District entry:listGet){
        District district = new District();
        district.setName(entry.getName());
        district.setCode(entry.getCode());
        district.setPid(entry.getPid());
        district.setLevel(3);
        list.add(district);
    }

    if (!list.isEmpty()){
        districtService.insertDistrict(list);
    }

    System.out.println(list);
}

前台代码

function insertData() {
    $.post("/test",{division:JSON.stringify(street)},function(){});
}