import java.io.IOException; import net.sf.json.JSONArray; import net.sf.json.JSONObject; import org.apache.commons.httpclient.DefaultHttpMethodRetryHandler; import org.apache.commons.httpclient.Header; import org.apache.commons.httpclient.HttpClient; import org.apache.commons.httpclient.HttpException; import org.apache.commons.httpclient.HttpStatus; import org.apache.commons.httpclient.methods.GetMethod; import org.apache.commons.httpclient.params.HttpMethodParams; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.util.EntityUtils; /** * */ public class HttpClientUtil { public static void main(String arg[]) throws Exception { String url = "test.com"; JSONObject params = new JSONObject(); params.put("SRC_STM_CODE", "wsf"); params.put("TENANT_ID", "123"); params.put("NM", "张三"); params.put("BRTH_DT", "1983-01-20"); params.put("GND_CODE", "1"); JSONArray params2 = new JSONArray(); JSONObject param3 = new JSONObject(); param3.put("DOC_TP_CODE", "10100"); param3.put("DOC_NBR", "100200198301202210"); param3.put("DOC_CUST_NM", "test"); params2.add(param3); params.put("DOCS", params2); String ret = doPost(url, params).toString(); System.out.println(ret); } /** httpClient的get请求方式2 * @return * @throws Exception */ public static String doGet(String url, String charset) throws Exception { /* * 使用 GetMethod 来访问一个 URL 对应的网页,实现步骤: 1:生成一个 HttpClinet 对象并设置相应的参数。 * 2:生成一个 GetMethod 对象并设置响应的参数。 3:用 HttpClinet 生成的对象来执行 GetMethod 生成的Get * 方法。 4:处理响应状态码。 5:若响应正常，处理 HTTP 响应内容。 6:释放连接。 */ /* 1 生成 HttpClinet 对象并设置参数 */ HttpClient httpClient = new HttpClient(); // 设置 Http 连接超时为5秒 httpClient.getHttpConnectionManager().getParams().setConnectionTimeout(5000); /* 2 生成 GetMethod 对象并设置参数 */ GetMethod getMethod = new GetMethod(url); // 设置 get 请求超时为 5 秒 getMethod.getParams().setParameter(HttpMethodParams.SO_TIMEOUT, 5000); // 设置请求重试处理，用的是默认的重试处理：请求三次 getMethod.getParams().setParameter(HttpMethodParams.RETRY_HANDLER, new DefaultHttpMethodRetryHandler()); String response = ""; /* 3 执行 HTTP GET 请求 */ try { int statusCode = httpClient.executeMethod(getMethod); /* 4 判断访问的状态码 */ if (statusCode != HttpStatus.SC_OK) { System.err.println("请求出错: "+ getMethod.getStatusLine()); } /* 5 处理 HTTP 响应内容 */ // HTTP响应头部信息，这里简单打印 Header[] headers = getMethod.getResponseHeaders(); for (Header h : headers) System.out.println(h.getName() + "------------ " + h.getValue()); // 读取 HTTP 响应内容，这里简单打印网页内容 byte[] responseBody = getMethod.getResponseBody();// 读取为字节数组 response = new String(responseBody, charset); System.out.println("----------response:" + response); // 读取为 InputStream，在网页内容数据量大时候推荐使用 // InputStream response = getMethod.getResponseBodyAsStream(); } catch (HttpException e) { // 发生致命的异常，可能是协议不对或者返回的内容有问题 System.out.println("请检查输入的URL!"); e.printStackTrace(); } catch (IOException e) { // 发生网络异常 System.out.println("发生网络异常!"); e.printStackTrace(); } finally { /* 6 .释放连接 */ getMethod.releaseConnection(); } return response; }
/** * post请求 * @param url * @param json * @return */ public static JSONObject doPost(String url,JSONObject json){ DefaultHttpClient client = new DefaultHttpClient(); HttpPost post = new HttpPost(url); JSONObject response = null; try { post.addHeader("Content-type","application/json; charset=utf-8"); post.setHeader("Accept", "application/json"); post.setEntity(new StringEntity(json.toString(), Charset.forName("UTF-8"))); HttpResponse res = client.execute(post); if(res.getStatusLine().getStatusCode() == HttpStatus.SC_OK){ HttpEntity entity = res.getEntity(); // 返回json格式： String result = EntityUtils.toString(res.getEntity()); response = JSONObject.parseObject(result); } } catch (Exception e) { throw new RuntimeException(e); } return response; } }