java对象 json 转换 java json文件转对象

java读取json文件并解析成对象

json文件格式

[{
	"angle": 1.0002098306294742,
	"id": 1,
	"lat": 30.479762556551492,
	"lon": 114.31612000661855,
	"speed": 36
}, {
	"angle": 1.0002098306294742,
	"id": 2,
	"lat": 30.479758174655966,
	"lon": 114.31611998912472,
	"speed": 36
}, {
	"angle": 1.0002098306296752,
	"id": 3,
	"lat": 30.47975379276045,
	"lon": 114.3161199716309,
	"speed": 36
}]

代码如下

     Location location = new Location();
        File file =new File("C:\\Users\\YJKJ\\Desktop\\result1.json");
        String json = FileUtils.readFileToString(file, "UTF-8");

        List<Location> list = JSON.parseObject(json, new TypeReference<List<Location>>() {});
        for (int i = 0; i < list.size(); i++) {
            BeanUtil.copyProperties(list.get(i),location);
        }