请求http://192.168.10.123:41002/wechatpay/payment?amt=1000&branchId=1000000002&ccy=CNY的java方式

在Java中发送HTTP请求到`http://192.168.10.123:41002/wechatpay/payment?amt=1000&branchId=1000000002&ccy=CNY`通常会使用HttpClient库或者其他网络客户端库，比如Apache HttpClient、OkHttp或者Spring框架自带的RestTemplate。下面是一个简单的示例，使用的是Apache HttpClient：

import org.apache.http.HttpHost;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;

public class WechatPayRequest {
    private static final String URL = "http://192.168.10.123:41002/wechatpay/payment";
    
    public static void main(String[] args) throws Exception {
        CloseableHttpClient httpClient = HttpClients.createDefault();
        try {
            HttpGet request = new HttpGet(URL);
            
            // 设置URL中的查询参数
            request.setParams(setUrlParameters(request.getURI(), 
                    "amt", "1000", 
                    "branchId", "1000000002", 
                    "ccy", "CNY"));

            // 发送请求并获取响应
            CloseableHttpResponse response = httpClient.execute(request);
            // 处理响应...
            response.close();
        } finally {
            httpClient.close();
        }
    }

    // 助手函数用于设置GET请求的URL参数
    private static void setUrlParameters(java.net.URI uri, String... paramNamesAndValues) {
        for (String pair : paramNamesAndValues) {
            int splitIndex = pair.indexOf('=');
            if (splitIndex > 0) {
                uri.setParameter(pair.substring(0, splitIndex), pair.substring(splitIndex + 1));
            }
        }
    }
}

在这个例子中，我们创建了一个HttpGet请求，设置了URL参数，然后通过HttpClient发送请求。请注意，在实际应用中，可能需要处理异常，并且处理返回的CloseableHttpResponse。