如何使用json文件执行post请求b吗

Question

我对使用REST调用是新手。我有一个测试。json文件在我的项目中。

该文件的内容是：

{
  "Added": {
    "type": "K",
    "newmem": {
      "IDNew": {
        "id": "777709",
        "type": "LOP"
      },
      "birthDate": "2000-12-09"
    },
    "code": "",
    "newest": {
      "curlNew": "",
      "addedForNew": ""
    }
  }
}

Java代码：

import java.io.DataInputStream;
import java.io.File;
//import org.json.JSONObject;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
public class TestAuth {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        File file = new File("test.json");
           try {
                JSONParser parser = new JSONParser();
                //Use JSONObject for simple JSON and JSONArray for array of JSON.
                JSONObject data = (JSONObject) parser.parse(
                      new FileReader(file.getAbsolutePath()));//path to the JSON file.
             System.out.println(data.toJSONString());
                URL url2 = new URL("myURL");
                HttpsURLConnection conn = (HttpsURLConnection) url2.openConnection();
                conn.setRequestMethod("POST");
                conn.setRequestProperty("Content-Type", "application/json");
                conn.setRequestProperty("Accept", "application/json");
                conn.setRequestProperty("Authorization", "Bearer aanjd-usnss092-mnshss-928nss");

                conn.setDoOutput(true);
                OutputStream outStream = conn.getOutputStream();
                OutputStreamWriter outStreamWriter = new OutputStreamWriter(outStream, "UTF-8");
                outStreamWriter.write(data.toJSONString());
                outStreamWriter.flush();
                outStreamWriter.close();
                outStream.close();
                String response = null;
                DataInputStream input = null;
                input = new DataInputStream (conn.getInputStream());
                while (null != ((response = input.readLine()))) {
                    System.out.println(response);
                    input.close ();
                }
            } catch (IOException | ParseException e) {
                e.printStackTrace();
            }
    }
}

例外:java.io.IOException:服务器返回HT

在Soap Ui,添加的endpoint和以上内容

如何读取json内容并将其作为java中的请求正文传递？

Answer 1

You can read the file in a method and pass the json string data read from the file to another method for posting the json data to the Rest end point
1) Read the Json data from the file
  public String readJsonDataFromFile() {
   InputStreamReader inputStreamReader = new InputStreamReader(new FileInputStream(new 
                                                          File("sample.json")));
      StringWriter writer = new StringWriter();   
      IOUtils.copy(inputStreamReader, writer);
      return writer.toString());
  }

2) Call the Restend point passing the Json data
  public void postData(String payload) {
        String url = "http://localhost:8080/endPoint";

        // Use the access token for authentication
        HttpHeaders headers = new HttpHeaders();
        headers.add("Authorization", "Bearer " + token);
        HttpEntity<String> entity = new HttpEntity<>(headers);

        ResponseEntity<String> response = restTemplate.exchange(url, 
                        HttpMethod.POST, entity, String.class);
       System.out.println(response.getBody());       
}
     As the response returned is 401, it is not successfully authenticated with the rest endpoint, check the error log if it gives more info about the error like whether the access token is expired.

Answer 2

我承认我阅读代码快但似乎好了。豪

你可能需要发送有效的身份验证是盟

Answer 3

我推荐你从这个主题中把json文件解析成字符串:如何用简单的JSON库把JSON文件读入java

然后，您可以使用您的JSON-String，并通过流行和简单的库< code>Gson解析到Map(或您指定的任何内容)。

String myJSON = parseFileToString();  //get your parsed json as string
Type mapType = new TypeToken<Map<String, String>>(){}.getType(); //specify type of 
your JSON format
Map<String, String> = new Gson().fromJson(myJSON, mapType); //convert it to map

然后你就可以通过这张地图作为请求的身体哟

您还可以将整个JSON(字符串版本)作为参数发送，而无需将其转换为映射或对象。这只是一个例子:)

如果您想在POST方法中传递此映射，则可以按照以下主题操作：使用HttpURLConnection在请求正文中发送数据

[更新] 它工作正常，结果 200 OK 从服务器，没有异常，没有错误：

   package com.company;

import java.io.DataInputStream;
import java.io.File;
//import org.json.JSONObject;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.URL;
import javax.net.ssl.HttpsURLConnection;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;
public class TestAuth {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        File file = new File("test.json");
        try {
            JSONParser parser = new JSONParser();
            //Use JSONObject for simple JSON and JSONArray for array of JSON.
            JSONObject data = (JSONObject) parser.parse(
                    new FileReader(file.getAbsolutePath()));//path to the JSON file.
            System.out.println(data.toJSONString());

            String paramValue = "param\\with\\backslash";
            String yourURLStr = "http://host.com?param=" + java.net.URLEncoder.encode(paramValue, "UTF-8");

            URL url2 = new URL("https://0c193bc3-8439-46a2-a64b-4ce39f60b382.mock.pstmn.io");
            HttpsURLConnection conn = (HttpsURLConnection) url2.openConnection();
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Content-Type", "application/json");
            conn.setRequestProperty("Accept", "application/json");
            conn.setRequestProperty("Authorization", "Bearer aanjd-usnss092-mnshss-928nss");

            conn.setDoOutput(true);
            OutputStream outStream = conn.getOutputStream();
            OutputStreamWriter outStreamWriter = new OutputStreamWriter(outStream, "UTF-8");
            outStreamWriter.write(data.toJSONString());
            outStreamWriter.flush();
            outStreamWriter.close();
            outStream.close();
            String response = null;

            System.out.println(conn.getResponseCode());
            System.out.println(conn.getResponseMessage());

            DataInputStream input = null;
            input = new DataInputStream (conn.getInputStream());
            while (null != ((response = input.readLine()))) {
                System.out.println(response);
                input.close ();
            }
        } catch (IOException | ParseException e) {
            e.printStackTrace();
        }
    }
}

如果这个答案解决了你的问题，请告诉我。问候语！