JAVA Json数组转换List实体对象

！！！！！！只能是json数组格式才能使用词方法转换

//JSonString json 数据
{

	"acchalfyear": [{
		"pk_acchalfyear": " ",
		"halfyear": "1",
		"beginmonth": "01",
		"endmonth": "06"
	}, {
		"pk_acchalfyear": "",
		"halfyear": "2",
		"beginmonth": "07",
		"endmonth": "12"
	}]

}

//转为JSonObject 
JSonObject jObject = JSON.parseObject(json.toJSonString());


//取出acchalfyear里面数据转为字符串
String JsonStr = jObject.get("acchalfyear").toString();


//此方法可以直接将数据转为List实体对象
List VOlist = JSONArray.parseArray(JsonStr , User.class);