我想要"{"id":100000000420,"lxdh":"025-58887689","xm":"李四","yddh":"15295745345","yzbm":210000,"zjdz":"北京","zjhm":"320122198705141312","zjlx":1,"userdata":{"isModified":true,"recordState":"edit"}}"这样格式的json,JSON.stringify(dlrxxData.getFirstRow().toJson({
format : "simple"
};)),这种形式的只能取到data的第一行数据,如果我想取data里面的所有数据应该怎么取