import java.util.LinkedHashMap;
import java.util.List;

import com.google.common.collect.Lists;
import com.google.common.collect.Maps;

/**
*泛型转换
*/
public class GenericSweepCode {


    public static void main(String[] args) throws Exception {
        Proto proto =new Test.Proto();
        List<Object> list = Lists.newArrayList();
        LinkedHashMap<String,String> map = Maps.newLinkedHashMap();
        map.put("1","2");
        list.add(map);
        proto.setData(list);//data Object 类型
        List<Integer> list2 = (List<Integer>) proto
                .getData();//
        list2.forEach(item->item.intValue());
        //java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to java.lang.Integer
    }

    static class Proto {
        public int code;
        public String msg;
        public Object data;

        public int getCode() {
            return this.code;
        }

        public void setCode(int code) {
            this.code = code;
        }

        public String getMsg() {
            return this.msg;
        }

        public void setMsg(String msg) {
            this.msg = msg;
        }

        public Object getData() {
            return this.data;
        }

        public void setData(Object data) {
            this.data = data;
        }

        public Proto() {
        }

        public Proto(int code, String msg) {
            this.code = code;
            this.msg = msg;
        }

        public Proto(int code, String msg, Object data) {
            this.code = code;
            this.msg = msg;
            this.data = data;
        }

    }

}