Java发送http请求发送json对象

 http工具类:

public static String httpPostWithjson(String url, String json) throws IOException {
    String result = "";
    HttpPost httpPost = new HttpPost(url);
    CloseableHttpClient httpClient = HttpClients.createDefault();
    try {
        BasicResponseHandler handler = new BasicResponseHandler();
        StringEntity entity = new StringEntity(json, "utf-8");//解决中文乱码问题
        entity.setContentEncoding("UTF-8");
        entity.setContentType("application/json");
        httpPost.setEntity(entity);
        result = httpClient.execute(httpPost, handler);
        return result;
    } catch (Exception e) {
        e.printStackTrace();

    } finally {
        try {
            httpClient.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    return result;
}

测试:
String httpURL = "http://localhost:8080/xxxxxx/orgnameRentArea/save.do";
try {
    OrgnameRentArea rentArea = new OrgnameRentArea();
    rentArea.setProjectId("1");
    rentArea.setRegularrentName("1");
    BigDecimal bigDecimal = new BigDecimal(2);
    rentArea.setRegularuseArea(bigDecimal);
    rentArea.setTempraturEarea(1);
    rentArea.setIsflag(1);
    rentArea.setStartTime("1");
    JSONObject jsonObject = JSONObject.fromObject(rentArea);
    String result1 = httpPostWithjson(httpURL, jsonObject.toString());
} catch (IOException e) {
    e.printStackTrace();
}