【已弃用】http post 方法传递参数的2种方式（api接口，或者说postman的请求）

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http post 方法传递参数的2种方式

StringEntity
UrlEncodedFormEntity
项目实例

StringEntity

try{  HttpPost httpPost = new HttpPost(url);  //param参数，可以为param="key1=value1&key2=value2"的一串字符串,或者是jsonObject String param1="key1=value1&key2=value2"JSONObject param2= new JSONObject();  param2.put("key1", "value1");  param2.put("key2t"," value2");  StringEntity stringEntity = new StringEntity(param1);  StringEntity stringEntity = new StringEntity(param2.toString());  stringEntity.setContentType("application/x-www-form-urlencoded");  httpPost.setEntity(stringEntity);  HttpClient client = new DefaultHttpClient();   HttpResponse httpResponse = client.execute(httpPost);  String result = EntityUtils.toString(httpResponse.getEntity(), HTTP.UTF_8);  } catch(IOException e){  }

UrlEncodedFormEntity

// An highlighted blockList<NameValuePair> pairs = new ArrayList<NameValuePair>();  NameValuePair pair1 = new BasicNameValuePair("supervisor", supervisorEt.getEditableText().toString());  NameValuePair pair2 = new BasicNameValuePair("content", superviseContentEt.getEditableText().toString());  NameValuePair pair3 = new BasicNameValuePair("userId", String.valueOf(signedUser.getId()));  pairs.add(pair1);  pairs.add(pair2);  pairs.add(pair3);  httpPost.setEntity(new UrlEncodedFormEntity(pairs, HTTP.UTF_8))

项目实例

需要导入的jar包
在这里插入图片描述

import com.dtstack.flinkx.exception.WriteRecordException;
import com.dtstack.flinkx.outputformat.BaseRichOutputFormat;
import com.dtstack.flinkx.restapi.common.HttpUtil;
import com.dtstack.flinkx.util.ExceptionUtil;
import com.google.common.collect.Maps;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import org.apache.flink.types.Row;
import org.apache.http.HttpStatus;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpRequestBase;
import org.apache.http.impl.client.CloseableHttpClient;import java.io.IOException;
import java.util.*;

//getRequest

HttpRequestBase request = HttpUtil.getRequest(method, requestBody, header, url);

/* 20210803 wx 修改post访问api josn参数无法传输的问题*/public static HttpRequestBase getRequest(String method,Map<String, Object> requestBody,Map<String, String> header,String url) {LOG.debug("current request url: {}  current method:{} \n", url, method);HttpRequestBase request = null;if (HttpMethod.GET.name().equalsIgnoreCase(method)) {request = new HttpGet(url);} else if (HttpMethod.POST.name().equalsIgnoreCase(method)) {HttpPost post = new HttpPost(url);post.setEntity(getEntityData(requestBody));request = post;} else {throw new UnsupportedOperationException("Unsupported method:" + method);}for (Map.Entry<String, String> entry : header.entrySet()) {request.addHeader(entry.getKey(), entry.getValue());}return request;}

//getEntityData

post.setEntity(getEntityData(requestBody));

public static StringEntity getEntityData(Map<String, Object> body) {String params =  jsonToParams(String.valueOf(gson.toJson(body.get("json"))));StringEntity stringEntity = new StringEntity(params, StandardCharsets.UTF_8);//stringEntity.setContentEncoding(StandardCharsets.UTF_8.name());这里设置了UTF-8反而不可以了return stringEntity;
}

//jsonToParams

String params =  jsonToParams(String.valueOf(gson.toJson(body.get("json"))));

/*** 20210803* json 转化为params 的格式 param参数，可以为"key1=value1&key2=value2"的一串字符串* @param jsonStr* @return*/public static String jsonToParams(String jsonStr){String params = null;try {Map<String,Object> map2= JSONObject.parseObject(jsonStr, HashMap.class);for (Map.Entry<String, Object> entry : map2.entrySet()) {System.out.println("key= " + entry.getKey() + " and value= " + entry.getValue());if(params==null){params = entry.getKey()+"="+String.valueOf(entry.getValue());}else{params = params +"&"+ entry.getKey()+"="+String.valueOf(entry.getValue());}}return params;}catch (Exception ex){throw new RuntimeException("json转map出错------------------------------------------------------------",ex);}}