java http发送xml报文加上密码认证

您可以使用Java的HttpClient库来发送HTTP请求，并在请求中添加XML报文和密码认证。下面是一个示例代码：

import org.apache.http.HttpEntity;
import org.apache.http.HttpHeaders;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

import java.io.IOException;

public class HttpClientExample {
    public static void main(String[] args) {
        // 设置用户名和密码
        String username = "your_username";
        String password = "your_password";

        // 创建CredentialsProvider并设置用户名和密码
        CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
        credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(username, password));

        // 创建HttpClient对象并设置CredentialsProvider
        CloseableHttpClient httpClient = HttpClients.custom()
                .setDefaultCredentialsProvider(credentialsProvider)
                .build();

        // 创建HttpPost对象
        HttpPost httpPost = new HttpPost("http://example.com/api/endpoint");

        // 设置请求头
        httpPost.setHeader(HttpHeaders.CONTENT_TYPE, ContentType.APPLICATION_XML.getMimeType());

        // 设置XML报文
        String xmlPayload = "<xml>...</xml>";
        httpPost.setEntity(new StringEntity(xmlPayload, ContentType.APPLICATION_XML));

        try {
            // 发送请求并获取响应
            CloseableHttpResponse response = httpClient.execute(httpPost);

            // 处理响应
            HttpEntity entity = response.getEntity();
            if (entity != null) {
                String responseString = EntityUtils.toString(entity);                System.out.println(responseString);
            }

            // 关闭响应和HttpClient
            response.close();
            httpClient.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

请替换示例代码中的`http://example.com/api/endpoint`为您要发送请求的实际URL，`<xml>...</xml>`为您要发送的XML报文内容。另外，将`your_username`和`your_password`替换为实际的用户名和密码。