「java调第三方接口案例」java三种接口设计
今天给各位分享java调第三方接口案例的知识，其中也会对java三种接口设计进行解释，如果能碰巧解决你现在面临的问题，别忘了关注本站，现在开始吧！
本文目录一览：
- 1、JAVA调第三方接口返回XML文件用httpclient实现求大神给指示（新号就5分全给了）要一个工具类，一个用例
- 2、java调用第三方接口
- 3、java如何使用http方式调用第三方接口？最好有代码~谢谢
JAVA调第三方接口返回XML文件用httpclient实现求大神给指示（新号就5分全给了）要一个工具类，一个用例
以下是一个http接口调用的例子：区别是返回的json数据，xml数据也是一样的，解析下xml数据就可以了，希望对你有帮助
public String getOrderCount() {
String mobile = ServletActionContext.getRequest().getParameter("mobile");
String urlStr = "";
urlStr += "?telphone=" + mobile + "endTime=" + DateUtil.getCurrentDay("yyyyMMdd") + "timeLength=2";
URL url = null;
HttpURLConnection httpurlconnection = null;
try {
url = new URL(urlStr);
// 以post方式请求
httpurlconnection = (HttpURLConnection) url.openConnection();
httpurlconnection.setDoOutput(true);
httpurlconnection.setRequestMethod("POST");
httpurlconnection.getOutputStream().flush();
httpurlconnection.getOutputStream().close();
// 获取响应代码
//int code = httpurlconnection.getResponseCode();
//System.out.println("code " + code);
// 获取页面内容
java.io.InputStream in = httpurlconnection.getInputStream();
java.io.BufferedReader breader = new BufferedReader(
new InputStreamReader(in, "utf-8"));
StringBuffer result = new StringBuffer();
String str = breader.readLine();
while (str != null) {
result.append(str);
str = breader.readLine();
}
HttpServletResponse response = ServletActionContext.getResponse();
response.setContentType("text/json;charset=utf-8");
response.getWriter().print(result);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (httpurlconnection != null)
httpurlconnection.disconnect();
}
return null;
}
java调用第三方接口
参数本身是无顺序的，header在前用于完成握手，完成握手后发送request信息在后。参数名字和文档必须一模一样。这个是websocket协议
java如何使用http方式调用第三方接口？最好有代码~谢谢
星号是IP地址和端口号
public class HttpUtil {
private final static Log log = LogFactory.getLog(HttpUtil.class);
public static String doHttpOutput(String outputStr,String method) throws Exception {
Map map = new HashMap();
String URL = "http://****/interface/http.php" ;
String result = "";
InputStream is = null;
int len = 0;
int tmp = 0;
OutputStream output = null;
BufferedOutputStream objOutput = null;
String charSet = "gbk";
System.out.println("URL of fpcy request");
System.out.println("=============================");
System.out.println(URL);
System.out.println("=============================");
HttpURLConnection con = getConnection(URL);
try {
output = con.getOutputStream();
objOutput = new BufferedOutputStream(output);
objOutput.write(outputStr.getBytes(charSet));
objOutput.flush();
output.close();
objOutput.close();
int responseCode = con.getResponseCode();
if (responseCode == 200) {
is = con.getInputStream();
int dataLen = is.available();
int retry = 5;
while (dataLen == 0 retry 0) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
}
dataLen = is.available();
retry--;
log.info("未获取到任何数据，尝试重试，当前剩余次数" + retry);
}
log.info("获取到报文单位数据长度:" + dataLen);
byte[] bytes = new byte[dataLen];
while ((tmp = is.read()) != -1) {
bytes[len++] = (byte) tmp;
if (len == dataLen) {
dataLen = bytes.length + dataLen;
byte[] newbytes = new byte[dataLen];
for (int i = 0; i bytes.length; i++) {
newbytes[i] = bytes[i];
}
bytes = newbytes;
}
}
result = new String(bytes, 0, len, charSet);
} else {
String responseMsg = "调用接口失败,返回错误信息:" + con.getResponseMessage() + "(" + responseCode + ")";
System.out.println(responseMsg);
throw new Exception(responseMsg);
}
} catch (IOException e2) {
log.error(e2.getMessage(), e2);
throw new Exception("接口连接超时！,请检查网络");
}
con.disconnect();
System.out.println("=============================");
System.out.println("Contents of fpcy response");
System.out.println("=============================");
System.out.println(result);
Thread.sleep(1000);
return result;
}
private static HttpURLConnection getConnection(String URL) throws Exception {
Map map = new HashMap();
int rTimeout = 15000;
int cTimeout = 15000;
String method = "";
method = "POST";
boolean useCache = false;
useCache = false;
HttpURLConnection con = null;
try {
con = (HttpURLConnection) new URL(URL).openConnection();
} catch (IOException e) {
log.error(e.getMessage(), e);
throw new Exception("URL不合法！");
}
try {
con.setRequestMethod(method);
} catch (ProtocolException e) {
log.error(e.getMessage(), e);
throw new Exception("通信协议不合法！");
}
con.setConnectTimeout(cTimeout);
con.setReadTimeout(rTimeout);
con.setUseCaches(useCache);
con.setDoInput(true);
con.setDoOutput(true);
log.info("当前连接信息: URL:" + URL + "," + "Method:" + method
+ ",ReadTimeout:" + rTimeout + ",ConnectTimeOut:" + cTimeout
+ ",UseCaches:" + useCache);
return con;
}
public static void main(String[] args) throws Exception {
String xml="?xml version=\"1.0\" encoding=\"GBK\" ?documenttxcode101/txcodenetnumber100001/netnumber........./document";
response=HttpUtil.doHttpOutput(xml, "post");
JSONObject json= JSONObject.parseObject(response);
String retcode=json.getString("retcode");
调用这个类就能获得返回的参数。。over.
}
}
}
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