一、http请求网络的接口
public String getToken() {
String url = "https://XXXXXXX";
String content = "{\"auth\": {\"tenantName\": \"XX\",\"passwordCredentials\":{\"username\": \"xx\", \"password\":\"0c59f134422f5e50\"}}}";
Map heads = new HashMap(1, 1);
heads.put("Content-type", "application/json");
String s = postUrl(url, content,
heads);
Map map = JsonUtil.toMap(s);
Map accessMap = (Map) map.get("access");
Map tokenMap = (Map) accessMap.get("token");
return (String) tokenMap.get("id");
}
public static String postUrl(String url, String content, Map
heads
) {
PrintWriter out = null;
BufferedReader in = null;
String result = "";
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
for (Map.Entry entry :
heads
.entrySet()) {
conn.setRequestProperty(entry.getKey(), entry.getValue());
------->设置请求属性
}
// 发送POST请求必须设置如下两行
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
out.print(content);
------------------------------>发送请求参数
// flush输出流的缓冲
out.flush();
// 定义BufferedReader输入流来读取URL的响应
in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String line;
while ((line = in.readLine()) != null) {
result += line;
}
} catch (Exception e) {
log.error(e.getMessage(), e);
} finally {
IOUtils.closeQuietly(out);
IOUtils.closeQuietly(in);
}
return result;
}