我试图在Java中模仿这个curl命令的功能:
curl --basic --user username:password -d "" http://ipaddress/test/login
我使用Commons HttpClient 3.0编写了以下内容但不知何故最终从服务器获得了500 Internal Server Error
。有人可以告诉我,如果我做错了吗?
public class HttpBasicAuth {
private static final String ENCODING = "UTF-8";
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
HttpClient client = new HttpClient();
client.getState().setCredentials(
new AuthScope("ipaddress", 443, "realm"),
new UsernamePasswordCredentials("test1", "test1")
);
PostMethod post = new PostMethod(
"http://address/test/login");
post.setDoAuthentication( true );
try {
int status = client.executeMethod( post );
System.out.println(status + "\n" + post.getResponseBodyAsString());
} finally {
// release any connection resources used by the method
post.releaseConnection();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
我后来尝试了Commons HttpClient 4.0.1,但仍然是同样的错误:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
public class HttpBasicAuth {
private static final String ENCODING = "UTF-8";
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
DefaultHttpClient httpclient = new DefaultHttpClient();
httpclient.getCredentialsProvider().setCredentials(
new AuthScope(AuthScope.ANY_HOST, AuthScope.ANY_PORT),
new UsernamePasswordCredentials("test1", "test1"));
HttpPost httppost = new HttpPost("http://host:post/test/login");
System.out.println("executing request " + httppost.getRequestLine());
HttpResponse response;
response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
System.out.println("----------------------------------------");
System.out.println(response.getStatusLine());
if (entity != null) {
System.out.println("Response content length: " + entity.getContentLength());
}
if (entity != null) {
entity.consumeContent();
}
httpclient.getConnectionManager().shutdown();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
答案 0 :(得分:158)
你试过这个(使用HttpClient版本4):
String encoding = Base64Encoder.encode(user + ":" + pwd);
HttpPost httpPost = new HttpPost("http://host:post/test/login");
httpPost.setHeader(HttpHeaders.AUTHORIZATION, "Basic " + encoding);
System.out.println("executing request " + httpPost.getRequestLine());
HttpResponse response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
答案 1 :(得分:100)
好的,这个有用。万一有人想要它,这是适用于我的版本:)
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Base64;
public class HttpBasicAuth {
public static void main(String[] args) {
try {
URL url = new URL ("http://ip:port/login");
String encoding = Base64.getEncoder().encodeToString(("test1:test1").getBytes("UTF-8"));
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setRequestProperty ("Authorization", "Basic " + encoding);
InputStream content = (InputStream)connection.getInputStream();
BufferedReader in =
new BufferedReader (new InputStreamReader (content));
String line;
while ((line = in.readLine()) != null) {
System.out.println(line);
}
} catch(Exception e) {
e.printStackTrace();
}
}
}
答案 2 :(得分:14)
这是上面接受的答案中的代码,对Base64编码做了一些更改。下面的代码编译。
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import org.apache.commons.codec.binary.Base64;
public class HttpBasicAuth {
public static void main(String[] args) {
try {
URL url = new URL ("http://ip:port/login");
Base64 b = new Base64();
String encoding = b.encodeAsString(new String("test1:test1").getBytes());
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("POST");
connection.setDoOutput(true);
connection.setRequestProperty ("Authorization", "Basic " + encoding);
InputStream content = (InputStream)connection.getInputStream();
BufferedReader in =
new BufferedReader (new InputStreamReader (content));
String line;
while ((line = in.readLine()) != null) {
System.out.println(line);
}
}
catch(Exception e) {
e.printStackTrace();
}
}
}
答案 3 :(得分:13)
一个小小的更新 - 希望对某些人有用 - 它在我的项目中对我有用:
我使用来自Robert Harder的漂亮公共域类Base64.java(感谢Robert - 代码可在此处使用:Base64 - 下载并将其放入您的包中。)
并下载带有身份验证的文件(图像,文档等)并写入本地磁盘
示例:
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
public class HttpBasicAuth {
public static void downloadFileWithAuth(String urlStr, String user, String pass, String outFilePath) {
try {
// URL url = new URL ("http://ip:port/download_url");
URL url = new URL(urlStr);
String authStr = user + ":" + pass;
String authEncoded = Base64.encodeBytes(authStr.getBytes());
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setDoOutput(true);
connection.setRequestProperty("Authorization", "Basic " + authEncoded);
File file = new File(outFilePath);
InputStream in = (InputStream) connection.getInputStream();
OutputStream out = new BufferedOutputStream(new FileOutputStream(file));
for (int b; (b = in.read()) != -1;) {
out.write(b);
}
out.close();
in.close();
}
catch (Exception e) {
e.printStackTrace();
}
}
}
答案 4 :(得分:7)
以下是几点:
您可以考虑升级到HttpClient 4(一般来说,如果可以的话,我认为版本3仍然没有得到积极支持)。
500状态代码是服务器错误,因此查看服务器的内容可能很有用(您正在打印的响应正文中的任何线索?)。虽然它可能是由您的客户端引起的,但服务器不应该以这种方式失败(如果请求不正确,则4xx错误代码会更合适)。
我认为setDoAuthentication(true)
是默认值(不确定)。可能有用的是先发制人认证更好:
client.getParams().setAuthenticationPreemptive(true);
否则,curl -d ""
与您在Java中所做的主要区别在于,除了Content-Length: 0
之外,curl还会发送Content-Type: application/x-www-form-urlencoded
。请注意,就设计而言,您可能应该发送一个包含POST
请求的实体。
答案 5 :(得分:5)
感谢上面的所有答案,但对我来说,我找不到Base64Encoder类,所以无论如何我都要理清。
public static void main(String[] args) {
try {
DefaultHttpClient Client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet("https://httpbin.org/basic-auth/user/passwd");
String encoding = DatatypeConverter.printBase64Binary("user:passwd".getBytes("UTF-8"));
httpGet.setHeader("Authorization", "Basic " + encoding);
HttpResponse response = Client.execute(httpGet);
System.out.println("response = " + response);
BufferedReader breader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuilder responseString = new StringBuilder();
String line = "";
while ((line = breader.readLine()) != null) {
responseString.append(line);
}
breader.close();
String repsonseStr = responseString.toString();
System.out.println("repsonseStr = " + repsonseStr);
} catch (IOException e) {
e.printStackTrace();
}
}
还有一件事,我也试过
Base64.encodeBase64String("user:passwd".getBytes());
它不起作用,因为它返回与
几乎相同的字符串DatatypeConverter.printBase64Binary()
但以" \ r \ n"结束,则服务器将返回"错误请求"。
此外代码也在运行,实际上我首先解决了这个问题,但由于某种原因,它在某些云环境中无效(sae.sina.com.cn如果你想知道,它是一个中国云服务)。所以必须使用http标头而不是HttpClient凭证。
public static void main(String[] args) {
try {
DefaultHttpClient Client = new DefaultHttpClient();
Client.getCredentialsProvider().setCredentials(
AuthScope.ANY,
new UsernamePasswordCredentials("user", "passwd")
);
HttpGet httpGet = new HttpGet("https://httpbin.org/basic-auth/user/passwd");
HttpResponse response = Client.execute(httpGet);
System.out.println("response = " + response);
BufferedReader breader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuilder responseString = new StringBuilder();
String line = "";
while ((line = breader.readLine()) != null) {
responseString.append(line);
}
breader.close();
String responseStr = responseString.toString();
System.out.println("responseStr = " + responseStr);
} catch (IOException e) {
e.printStackTrace();
}
}
答案 6 :(得分:3)
HttpBasicAuth适用于我的更改较小
我使用maven依赖
<dependency>
<groupId>net.iharder</groupId>
<artifactId>base64</artifactId>
<version>2.3.8</version>
</dependency>
更小的变化
String encoding = Base64.encodeBytes ((user + ":" + passwd).getBytes());
答案 7 :(得分:3)
对于HttpClient始终使用HttpRequestInterceptor 例如
httclient.addRequestInterceptor(new HttpRequestInterceptor() {
public void process(HttpRequest arg0, HttpContext context) throws HttpException, IOException {
AuthState state = (AuthState) context.getAttribute(ClientContext.TARGET_AUTH_STATE);
if (state.getAuthScheme() == null) {
BasicScheme scheme = new BasicScheme();
CredentialsProvider credentialsProvider = (CredentialsProvider) context.getAttribute(ClientContext.CREDS_PROVIDER);
Credentials credentials = credentialsProvider.getCredentials(AuthScope.ANY);
if (credentials == null) {
System.out.println("Credential >>" + credentials);
throw new HttpException();
}
state.setAuthScope(AuthScope.ANY);
state.setAuthScheme(scheme);
state.setCredentials(credentials);
}
}
}, 0);
答案 8 :(得分:3)
使用Header数组
String auth = Base64.getEncoder().encodeToString(("test1:test1").getBytes());
Header[] headers = {
new BasicHeader(HTTP.CONTENT_TYPE, ContentType.APPLICATION_JSON.toString()),
new BasicHeader("Authorization", "Basic " +auth)
};
答案 9 :(得分:1)
使用HTTP POST 不执行任何特定于Base64的调用 的简便方法是使用HTTPClient BasicCredentialsProvider < / p>
import java.io.IOException;
import static java.lang.System.out;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.HttpClientBuilder;
//code
CredentialsProvider provider = new BasicCredentialsProvider();
UsernamePasswordCredentials credentials = new UsernamePasswordCredentials(user, password);
provider.setCredentials(AuthScope.ANY, credentials);
HttpClient client = HttpClientBuilder.create().setDefaultCredentialsProvider(provider).build();
HttpResponse response = client.execute(new HttpPost("http://address/test/login"));//Replace HttpPost with HttpGet if you need to perform a GET to login
int statusCode = response.getStatusLine().getStatusCode();
out.println("Response Code :"+ statusCode);