调用对方http接口步骤:
URL url = new URL(path);
打开和url之间的连接
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
设置通用的请求属性
conn.setRequestProperty("accept", "*
public class ToInterface {
public static void interfaceUtil(String path,String data) {
try {
URL url = new URL(path);
//打开和url之间的连接
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
PrintWriter out = null;
//请求方式
// conn.setRequestMethod("POST");
// //设置通用的请求属性
conn.setRequestProperty("accept", "*/*");
conn.setRequestProperty("connection", "Keep-Alive");
conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");
//设置是否向httpUrlConnection输出,设置是否从httpUrlConnection读入,此外发送post请求必须设置这两个
//最常用的Http请求无非是get和post,get请求可以获取静态页面,也可以把参数放在URL字串后面,传递给servlet,
//post与get的 不同之处在于post的参数不是放在URL字串里面,而是放在http请求的正文内。
conn.setDoOutput(true);
conn.setDoInput(true);
//获取URLConnection对象对应的输出流
out = new PrintWriter(conn.getOutputStream());
//发送请求参数即数据
out.print(data);
//缓冲数据
out.flush();
//获取URLConnection对象对应的输入流
InputStream is = conn.getInputStream();
//构造一个字符流缓存
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String str = "";
while ((str = br.readLine()) != null) {
System.out.println(str);
}
//关闭流
is.close();
//断开连接,最好写上,disconnect是在底层tcp socket链接空闲时才切断。如果正在被其他线程使用就不切断。
//固定多线程的话,如果不disconnect,链接会增多,直到收发不出信息。写上disconnect后正常一些。
conn.disconnect();
System.out.println("完整结束");
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
interfaceUtil("http://api.map.baidu.com/telematics/v3/weather?location=嘉兴
&output=json&ak=5slgyqGDENN7Sy7pw29IUvrZ", "");
// interfaceUtil("http://192.168.10.89:8080/eoffice-restful/resources/sys/oadata", "usercode=10012");
// interfaceUtil("http://192.168.10.89:8080/eoffice-restful/resources/sys/oaholiday",
// "floor=first&year=2017&month=9&isLeader=N");
}
}
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