复杂json转list

json数据格式如下

{
  "resultcode": "200",
  "reason": "查询支持的快递公司成功",
  "result": [
    {
      "com": "顺丰",
      "no": "sf"
    },
    {
      "com": "申通",
      "no": "sto"
    },
    {
      "com": "圆通",
      "no": "yt"
    },
    {
      "com": "韵达",
      "no": "yd"
    }
  ],
  "error_code": 0
}

对我们有用的是result下的数据

新建一个javabean 记得加toString

public class ExpressVo {
	private String com;
	private String no;
	/**
	 * @return the com
	 */
	public String getCom() {
		return com;
	}
	/**
	 * @param com the com to set
	 */
	public void setCom(String com) {
		this.com = com;
	}
	/**
	 * @return the no
	 */
	public String getNo() {
		return no;
	}
	/**
	 * @param no the no to set
	 */
	public void setNo(String no) {
		this.no = no;
	}
	/* (non-Javadoc)
	 * @see java.lang.Object#toString()
	 */
	@Override
	public String toString() {
		return "ExpressVo [com=" + com + ", no=" + no + "]";
	}
	
}

使用谷歌的json

	String result = ExpressUtil.queryExpList(); //result为json数据
    	JsonParser parser = new JsonParser();
		JsonObject object = (JsonObject) parser.parse(result);
		JsonArray array = object.get("result").getAsJsonArray();
		List<ExpressVo> list = new ArrayList<ExpressVo>();
		for(int i=0;i<array.size();i++){
			ExpressVo express = new ExpressVo();
			JsonObject sub = array.get(i).getAsJsonObject();
			express.setCom(sub.get("com").getAsString());
			express.setNo(sub.get("no").getAsString());
			list.add(express);
		}
		return list;

这样就可以使用jsp的<c:foreach>标签正常的遍历需要的数据