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由于工作需要使用java实现http客户端发送get请求，且参数值为json格式，几经周折得以实现，现在记录分享如下：
hashMap 参数实例：
Map indata = new HashMap(); indata.put("berthstatus", 1); indata.put("berthcode", "22333"); indata.put("parkcode", "6688"); Map param = new HashMap(); param.put("indata",indata);
具体实现函数：
protected void requestService(Map reqmap) throws Exception { JSONObject obj = new JSONObject(reqmap); String r = URLEncoder.encode(obj.toString(), "UTF-8"); String reqUrl = "http://192.168.17.35:8888/getParkInfo?jsonString=" + r; System.out.println("请求参数:" + reqUrl); CloseableHttpResponse response = null; CloseableHttpClient client = null; String res = null; HttpGet httpGet = new HttpGet(reqUrl); System.out.println("executing request" + httpGet.getRequestLine()); try { client = HttpClients.createDefault(); response = client.execute(httpGet); if (response.getStatusLine().getStatusCode() == 200) { String result = EntityUtils.toString(response.getEntity()); System.out.println("executing result---连接正常" + result); } else { System.out.println("executing result---服务器连接异常"); } } catch (Exception e) { System.out.println("Exception================" + e.toString()); } finally { if (response != null) { response.close(); } if (client != null) { client.close(); } } }
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