1 Resources.load 是将物体加载到内存中去，

2 Instantitate  是在Unity 中生成该物体，之后场景中就会出现该物体

示例:

using UnityEngine;

using System.Collections;
using System.Collections.Generic;
public class Choose_LoadObject : MonoBehaviour {

    public List<Transform> transformList;
    public List<string> contentList= new List<string>();
    private string server;
    public GameObject  floatingPrefab;
    private GameObject target;
    // Use this for initialization
    void Start () {
        server = "http://www.vrbeyond.com/kejian/";
       // transformList = new List<Transform>();
        PlayerPrefs.SetString("server", server);
        StartCoroutine(Loadobj());
        target = GameObject.Find("Target");
 }
    // Update is called once per frame
    void Update()
    {

    }

    IEnumerator Loadobj() {
        string pathJD= server + "JD.php";
        using (WWW contentText = new WWW(pathJD))
        {
       
            yield return contentText;
            string contentString = contentText.text;
            //Debug.Log(contentString);
            string [] contentStringArray= contentString.Split('\n');
            for(int i = 0; i < contentStringArray.Length; i++)
            {
                if (i == 0) { continue; }
                if (i == 2)
                {
                    break;
                }
               
                string[] contentItemStringArray= contentStringArray[i].Split('$');
                 GameObject go= Instantiate<GameObject>(floatingPrefab);
                 go.name = contentItemStringArray[0]; // 节点
                 go.transform.Find("nameSprite/nametext").GetComponent<TextMesh>().text = contentItemStringArray[1]; //名字
                 go.transform.position = transformList[i].position;
                // go.transform.LookAt(target.transform);

                string prefabPath = "Hourse" + "/" + contentItemStringArray[0] + "/" + contentItemStringArray[0] + "_GJJG_Hand";

              // 加载到内存中去，
                GameObject modle=  Resources.Load<GameObject>(prefabPath);

              // 在场景中生成物体，生成后场景就会出现该物体实例
                GameObject modleGo = Instantiate<GameObject>(modle);

                modleGo.transform.SetParent(go.transform);
                modleGo.transform.localScale = new Vector3(0.12f, 0.12f, 0.12f);
                modleGo.transform.localPosition = new Vector3(0f, 0f, 0.5825443f);

                modleGo.transform.Find("_标注").gameObject.SetActive(false);
                modleGo.transform.Find("跟踪物体").gameObject.SetActive(false);
                 // 加载但是没在场景中生成，但是场景中没有该物体，之后把图片赋值给要显示的UI 上
               string spritePath = "Hourse" + "/" + contentItemStringArray[0] + "/" + contentItemStringArray[0] + "_sprite";
                 Sprite s = Resources.Load<Sprite>(spritePath);
                go.transform.Find("nameSprite").GetComponent<SpriteRenderer>().sprite = s;

            }
 
        }

    }
}