用httpclient编写的curl等效代码：java

Question

有一个在 tomcat 中运行的 Web 应用程序，基于我的 Web 应用程序中的某些操作，我需要编写一个将触发 curl 的 java 代码（http://curl.haxx.se）。然后，Curl 将查询第三方应用程序并返回 XML/JSON。

我必须阅读此内容并向用户返回适当的响应。

我知道这可以通过curl来完成，但是使用命令行工具从Web应用程序发出请求并不是最好的方法，因此我用Java编写了一段代码，httpclient API。

curl代码是

curl -u username:password -d "param1=aaa& param2=bbb" -k http://www.testme.com/api/searches.xml

curl默认使用base64编码。因此，我编写的Java中的相应代码是

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.HttpStatus;
import org.apache.commons.httpclient.UsernamePasswordCredentials;
import org.apache.commons.httpclient.methods.PostMethod;

import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.InputStreamReader;

public class NCS2
{

  public static void main(String args[]) {

    String username = "abc";
    String password = "xyz";

    HttpClient httpclient = new HttpClient();
    BufferedReader bufferedreader = null;


    PostMethod postmethod = new PostMethod("https://www.testabc.com/api/searches.xml");
    postmethod.addParameter("_def_id","8");
    postmethod.addParameter("dobday", "6");
    postmethod.addParameter("dobmonth","6");
    postmethod.addParameter("dobyear", "1960");
    postmethod.addParameter("firstname", "Test");
    postmethod.addParameter("lastname", "Test");


    String username_encoded = new String(Base64.encodeBase64(username.getBytes()));
    System.out.println("username_encoded ="+username_encoded);

    String password_encoded = new String(Base64.encodeBase64(password.getBytes()));
    System.out.println("password_encoded ="+password_encoded);

    httpclient.getState().setAuthenticationPreemptive(true);
    UsernamePasswordCredentials credentials = new UsernamePasswordCredentials();
    credentials.setPassword(username_encoded);
    credentials.setUserName(password_encoded);

 httpclient.getState().setCredentials("FORM","http://www.testabc.com/api/searches.xml",credentials);   // I am not sure which one to use here..

    try{
          int rCode = httpclient.executeMethod(postmethod);
          System.out.println("rCode is" +rCode);

          if(rCode == HttpStatus.SC_NOT_IMPLEMENTED) 
           {
              System.err.println("The Post postmethod is not implemented by this URI");
               postmethod.getResponseBodyAsString();
           } 
             else if(rCode == HttpStatus.SC_NOT_ACCEPTABLE) {
                System.out.println(postmethod.getResponseBodyAsString());
          }
           else {
                      bufferedreader = new BufferedReader(new InputStreamReader(postmethod.getResponseBodyAsStream()));
                       String readLine;
        while(((readLine = bufferedreader.readLine()) != null)) {
          System.out.println("return value " +readLine);
      }
      }
    } catch (Exception e) {
      System.err.println(e);
    } finally {
      postmethod.releaseConnection();
      if(bufferedreader != null) try { bufferedreader.close(); } catch (Exception fe)    fe.printStackTrace();  }     }   }
}

使用它，我得到rCode的返回值为“406”。为什么我收到“不可接受”的回复任何可以帮助我更好地调试并解决此问题的内容。

Answer 1

考虑使用记录请求和响应的代理。像 VisualProxy 这样的东西就可以了。我没有使用它，因为当我需要它时我自己编写了它。我的只是将请求写为页面正文。