java后端通过url调用远程接口服务

java后端通过url调用远程接口服务

public static String sendRequest(String url, Object object) {
PrintWriter out = null;
BufferedReader in = null;
StringBuilder result = new StringBuilder();
try {
URL realUrl = new URL(url);
// 打开和URL之间的连接
URLConnection conn = realUrl.openConnection();
conn.setConnectTimeout(1000000);
// 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)”);*/
conn.setRequestProperty(“Content-Type”,
“application/json;charset=utf-8”);
// 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(object);
// 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.append(line);
}
} catch (Exception e) {
System.out.println(“发送 POST 请求出现异常！” + e);
e.printStackTrace();
}
// 使用finally块来关闭输出流、输入流
finally {
try {
if (out != null) {
out.close();
}
if (in != null) {
in.close();
}
} catch (IOException ex) {
ex.printStackTrace();
}
}
return result.toString();
}