httpClient post请求设置了Content-Type application/json还是无法转换为json格式,415，stringEntity.setContentType

最新推荐文章于 2024-10-11 17:07:50 发布
Blue_Bang 最新推荐文章于 2024-10-11 17:07:50 发布阅读量5.2k
httpClient post请求设置了Content-Type application/json还是无法转换为json格式

问题是这样的，开发时遇到了上述问题，我的代码是这么写的
nodejs 中的请求解析json数据引用
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
java: 
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost httpPost = new HttpPost(apiUrl);
JSONObject obj = new JSONObject();
obj.put("filePath", "jpg");
obj.put("projectId", "abc");
StringEntity stringEntity = new StringEntity(obj.toString(), "UTF-8");
stringEntity.setContentEncoding("UTF-8");
stringEntity.setContentType("application/json");
CloseableHttpResponse response = httpClient.execute(httpPost);
int status = response.getStatusLine().getStatusCode()
16:32:09.287 [main] DEBUG org.apache.http.wire - http-outgoing-0 >> "{"filePath":"jpg","projectId":"abc"}"
16:32:09.291 [main] DEBUG org.apache.http.wire - http-outgoing-0 << "HTTP/1.1 415 Unsupported Media Type[\r][\n]"
415 Unsupported Media Type 服务器无法处理请求附带的媒体格式
 看样子json格式，没错，但是报415错误 
于是我在请求头添加 
httpPost.addHeader("Content-Type", "application/json; charset=utf-8");
依然报同样的错误，变成 
httpPost.addHeader("Content-Type", "application/json; charset=utf-8");
stringEntity.setContentEncoding("UTF-8");
stringEntity.setContentType("application/json");
于是把删掉
 stringEntity.setContentEncoding(“UTF-8”);
 stringEntity.setContentType(“application/json”); ` 
保留
 httpPost.addHeader("Content-Type", "application/json; charset=utf-8");
 就解决了 
问题是解决了，但原因未明，我看其他博客
 有时也会用到stringEntity.setContentType(“application/json”);,
 难道时header和stringEntity不能同时设置？
 但只设置stringEntity又会包415，嗯，有点诡异 
后来尝试了几种组合，注意utf-8后有分号 
httpPost.addHeader("Content-Type", "application/json; charset=utf-8;");
stringEntity.setContentEncoding("UTF-8");
stringEntity.setContentType("application/json");
httpPost.addHeader("Content-Type", "application/json;");
stringEntity.setContentEncoding("UTF-8");
stringEntity.setContentType("application/json");
以上两种不报415，但是nodejs就没解析到 
exports.xxx= (req, res) => {
    logger.info('params:' + json(req.body));
2022-03-04T17:00:14+08:00 [info] : params:{}
看着时发过去了 
17:00:14.205 [main] DEBUG org.apache.http.wire - http-outgoing-0 >> "Content-Type: application/json;[\r][\n]"
17:00:14.205 [main] DEBUG org.apache.http.wire - http-outgoing-0 >> "Accept-Language: zh-CN,zh;q=0.9,en;q=0.8[\r][\n]"
17:00:14.205 [main] DEBUG org.apache.http.wire - http-outgoing-0 >> "Connection: keep-alive[\r][\n]"
17:00:14.205 [main] DEBUG org.apache.http.wire - http-outgoing-0 >> "Content-Length: 56[\r][\n]"
17:00:14.205 [main] DEBUG org.apache.http.wire - http-outgoing-0 >> "Content-Encoding: UTF-8[\r][\n]"
17:00:14.206 [main] DEBUG org.apache.http.wire - http-outgoing-0 >> "Host: 127.0.0.1:8956[\r][\n]"
17:00:14.206 [main] DEBUG org.apache.http.wire - http-outgoing-0 >> "User-Agent: Apache-HttpClient/4.5.6 (Java/1.8.0_191)[\r][\n]"
17:00:14.206 [main] DEBUG org.apache.http.wire - http-outgoing-0 >> "[\r][\n]"
17:00:14.206 [main] DEBUG org.apache.http.wire - http-outgoing-0 >> "{"filePath":"jpg","projectId":"abc"}"
httpPost.addHeader("Content-Type", "application/json");
stringEntity.setContentEncoding("UTF-8");
stringEntity.setContentType("application/json");
这个报415
嗯，记录一下
				import net.sf.json.JSONObject;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClientBuilder;
// StringEntity s = new StringEntity(dataStr);
// s.setContentEncoding("UTF-8");
// s.setContentType("application/json");
				privatevoidhttpReqUrl(List<HongGuTan>list,Stringurl) 
 throwsClientProtocolException,IOException{ 
import org.apache.commons.codec.digest.DigestUtils;
import org.apache.commons.logging.Log;
import android.text.TextUtils
import android.util.Log
import com.alibaba.fastjson.JSONException
import com.google.gson.Gson
import okhttp3.*
import okhttp
				requests通过post请求，设置headers = {‘Content-Type’: ‘application/json’ }未生效问题
1、requests中，设置headers参数{‘Content-Type’: ‘application/json’ }，是将请求数据以json的格式发送，而headers中默认请求方式是表单提交：{‘Content-Type’: ‘application/x-www-form-urlencoded’ }；
设置了headers = {‘Content-Ty
结果运行后发现$_POST数组为空！
百度之后发现是content-type为"application/json"的数据php是不能直接识别的，所以导致$_POST数组为空
解决办法：我们只要用$GLOBALS['HTTP_RAW_POST_DATA']把原始数据取出来，然后再json_decode就行了
 //request.getParameterNames();
 br = new BufferedReader(new InputStreamReader((ServletInputStream) request.getInputStream(), "utf-8"));
 StringBuffer sb = new StringBuffer("");
 String temp;
 while ((temp = br.readLine()) != null) {
     sb.ap
第一部分：目前工作中涉及到的content-type 有三种：
content-type：在Request Headers里，告诉服务器我们发送的请求信息是哪种格式的。
1content-type:application/x-www-form-urlencoded
默认的。如果不指定content-ty...
				由于项目需要，需要用httpclient调其他部门的接口获取信息，学习了httpclient的使用方法，demo大概代码如下：
 public static List doPost(String url, JSONObject json, String infoname, Class cl){
        CloseableHttpClient httpclient = HttpClien
				HttpClient client = new HttpClient();  
        //HttpMethod method = postMethod("https://m.kuaidi100.com/query", expressCompany,expressNum);
        PostMethod post = new PostMethod("https://m.kuaidi
				httpClient post请求设置了Content-Type application/json还是无法转换为json格式,415，stringEntity.setContentType
                httpClient post请求设置了Content-Type application/json还是无法转换为json格式,415，stringEntity.setContentType
                    zhuloong: 
                    是的，我也遇到了同样的问题，正在寻找问题的答案
                httpClient post请求设置了Content-Type application/json还是无法转换为json格式,415，stringEntity.setContentType
                    时生-0: 
                    。。。。我也被这个搞糊涂了