方案：1.检查jackson包是否存在
@controller
@RequestMapping(value = "/httpclient/post",method=RequestMethod.POST)
@ResponseBody
public TaotaoResult testPost(String username,String password){
system.out.println( "username" + username + "/t password" + password);
return TaotaoResult.ok();
}
2.后缀名是.html结尾的，是不能返回json数据的。需要修改后缀名为其他的。如.do。或者.action
@Test
public void doPost() throws Exception, IOException {
CloseableHttpClient httpClient = HttpClients.createDefault();
// 创建一个post对象
HttpPost post = new HttpPost("http://localhost:8082/httpclient/post.do");
// 执行post请求
CloseableHttpResponse respose = httpClient.execute(post);
String string = EntityUtils.toString(respose.getEntity());
System.out.println(string);
respose.close();
httpClient.close();
}
