HttpRequest 发送post

HttpRequest发送POST请求的代码如下：

public static String sendPostRequest(String url, JSONObject body) {
    String respStr = null;
    try {
        respStr = HttpRequest.post(url)
                .header("Content-Type", "application/json")
                .body(body.toJSONString())
                .timeout(5000)
                .execute()
                .body();
    } catch (HttpException e) {
        return null;
    }
    return respStr;
}

这个方法使用了HttpRequest库的post方法，可以发送带有JSON格式数据的POST请求。需要传入URL和请求体作为参数，然后设置Content-Type为application/json，并把请求体转换为JSON字符串。最后通过execute方法发送请求并获取响应体。如果发生异常，则返回null。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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