restTemplate添加header
public static void main(String[] args) throws Exception {
HashMap<String, String> hashMap = new HashMap<>();
hashMap.put("key", "value");
String body = JSONObject.toJSONString(hashMap);
post(body);
}
/**
* 发送 post请求
*/
public static void post(String body) throws Exception {
// 获得Http客户端
CloseableHttpClient httpclient = HttpClientBuilder.create().build();
// 创建httpPost
HttpPost httppost = new HttpPost("替换连接地址");
//设置参数体
httppost.setHeader("Content-Type", "application/json;charset=UTF-8");
//装填参数
StringEntity s = new StringEntity(body, "utf-8");
//设置参数到请求对象中
httppost.setEntity(s);
CloseableHttpResponse response = httpclient.execute(httppost);
try {
HttpEntity entity = response.getEntity();
if (entity != null) {
System.out.println("--------------------------------------");
System.out.println("Response content: " + EntityUtils.toString(entity, "UTF-8"));
System.out.println("--------------------------------------");
}
} finally {
response.close();
}
try {
httpclient.close();
} catch (IOException e) {
e.printStackTrace();
}
}