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我想調用一個WEB API並使用下面的代碼獲取JSON輸出。錯誤訪問使用POSTMAN運行良好的Web API
我用POSTMAN測試了這個,它工作正常。 POST請求中有兩個值和更多的值。
但是,當我嘗試使用Apache的HTTP客戶端來訪問相同的Web API,我得到以下輸出和錯誤:
Response Code : 200
Result:{"errorCode":3000,"errorMessage":"Invalid request parameters"}
代碼:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.message.BasicNameValuePair;
public class WhiteSourceAPI {
public static void main(String[] args) {
try {
String url = "https://example.com/api";
HttpClient client = HttpClientBuilder.create().build();
HttpPost post = new HttpPost(url);
//header
post.setHeader("Content-Type", "application/json");
post.setHeader("Accept-Charset", "UTF-8");
List<NameValuePair> urlParameters = new ArrayList<>();
urlParameters.add(new BasicNameValuePair("requestType", "xxxx"));
urlParameters.add(new BasicNameValuePair("projectToken", "xxxx-xxxx-xxxx-xxxx"));
post.setEntity(new UrlEncodedFormEntity(urlParameters));
HttpResponse response = client.execute(post);
System.out.println("Response Code : " + response.getStatusLine().getStatusCode());
BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuilder result = new StringBuilder();
String line = "";
while ((line = rd.readLine()) != null) {
result.append(line);
}
System.out.println("Result:" +result);
} catch (IOException ex) {
Logger.getLogger(WhiteSourceAPI.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
什麼是你的網絡API的參數? – ELITE
您將Content-Type設置爲「application/json」,然後將UrlEncodedFormEntity作爲正文傳遞 - 這不是JSON。嘗試通過原始JSON來檢查這是否適用於您 – VitalyZ
@VitalyZ謝謝,使用原始JSON而不是UrlEncodedFormEntity身體的工作。 – wishman