java的借口调用HttpURLConnection设置请求参数

可以通过以下代码来设置HttpURLConnection的请求参数：

HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setConnectTimeout(5000);
conn.setReadTimeout(5000);
conn.setDoOutput(true);
conn.setDoInput(true);
conn.setUseCaches(false);
conn.setRequestProperty("Content-Type", "application/json;charset=UTF-8");

// 设置请求体
String requestBody = "{\"key1\":\"value1\", \"key2\":\"value2\"}";
OutputStream outputStream = conn.getOutputStream();
outputStream.write(requestBody.getBytes());
outputStream.flush();
outputStream.close();

其中setRequestMethod()设置请求方法，setConnectTimeout()和setReadTimeout()设置连接和读取超时时间，setDoOutput()和setDoInput()设置是否允许输出和输入，setUseCaches()设置是否使用缓存，setRequestProperty()设置请求头信息。最后通过OutputStream设置请求体。