直接用方法

public static void main(String[] args) {
		String url = "http://www.mysada.com/ar_AE/api/article_categories";
		Map<String,Object> params = new HashMap<>();
		Request req = Request.create(url, METHOD.POST, params, null);
		req.getHeader().set("Access-Token", "ABXDEF-GHIJK-LMNOP-QRSTUVW-XYZ");
		try {
			Response resp = Sender.create(req).send();
			if (resp.isOK()) {
				String res = resp.getContent();
				System.out.println(res);
			} else {
				log.errorf("status %s ", resp.getStatus());
			}
		} catch (Exception e) {
			log.error(e);
		}
	}

返回的结果是

{
    "code": 1,
    "message": "Request successfully",
    "content": [
        {
            "id": "1",
            "title": "\u0639\u0631\u0628\u064a",
            "display_order": "0"
        },
        {
            "id": "2",
            "title": "\u062f\u0648\u0644\u064a",
            "display_order": "1"
        },
        {
            "id": "3",
            "title": "\u0625\u0642\u062a\u0635\u0627\u062f",
            "display_order": "2"
        },
        {
            "id": "4",
            "title": "\u0643\u0631\u0629 \u0642\u062f\u0645",
            "display_order": "3"
        },
        {
            "id": "6",
            "title": "\u062a\u0643\u0646\u0648\u0644\u0648\u062c\u064a\u0627",
            "display_order": "5"
        },
        {
            "id": "7",
            "title": "\u062a\u0631\u0641\u064a\u0647",
            "display_order": "6"
        },
        {
            "id": "8",
            "title": "\u0645\u0634\u0627\u0647\u064a\u0631",
            "display_order": "7"
        },
        {
            "id": "9",
            "title": "\u062d\u0648\u0627\u0621",
            "display_order": "8"
        },
        {
            "id": "5",
            "title": "\u0645\u0635\u0631",
            "display_order": "9"
        },
        {
            "id": "17",
            "title": "\u0627\u0644\u0633\u0639\u0648\u062f\u064a\u0629",
            "display_order": "10"
        },
        {
            "id": "10",
            "title": "\u0633\u064a\u0627\u0631\u0627\u062a",
            "display_order": "11"
        },
        {
            "id": "11",
            "title": "\u0639\u0644\u0648\u0645",
            "display_order": "12"
        },
        {
            "id": "12",
            "title": "\u0623\u0644\u0639\u0627\u0628",
            "display_order": "13"
        },
        {
            "id": "14",
            "title": "\u0633\u064a\u0627\u062d\u0629",
            "display_order": "14"
        },
        {
            "id": "15",
            "title": "\u0637\u0628\u062e",
            "display_order": "15"
        },
        {
            "id": "16",
            "title": "\u0635\u062d\u0629",
            "display_order": "16"
        },
        {
            "id": "13",
            "title": "\u0627\u0644\u0625\u0645\u0627\u0631\u0627\u062a",
            "display_order": "17"
        }
    ]
}

而用在线工具

http://www.atool.org/httptest.php

测试返回的数据则是

{
    "code": 1,
    "message": "Request successfully",
    "content": [
        {
            "id": "1",
            "title": "\u0639\u0631\u0628\u064a",
            "display_order": "0"
        }
    ]
}

这会是哪个地方的问题？