JAVA HttpClient进行POST请求(HTTPS)

时间:2023-03-08 16:31:07

目前,要为另一个项目提供接口,接口是用HTTP URL实现的,最初的想法是另一个项目用jQuery post进行请求。

但是,很可能另一个项目是部署在别的机器上,那么就存在跨域问题,而jquery的post请求是不允许跨域的。

这时,就只能够用HttpClient包进行请求了,同时由于请求的URL是HTTPS的,为了避免需要证书,所以用一个类继承DefaultHttpClient类,忽略校验过程。

1.写一个SSLClient类,继承至HttpClient

  1. import java.security.cert.CertificateException;
  2. import java.security.cert.X509Certificate;
  3. import javax.net.ssl.SSLContext;
  4. import javax.net.ssl.TrustManager;
  5. import javax.net.ssl.X509TrustManager;
  6. import org.apache.http.conn.ClientConnectionManager;
  7. import org.apache.http.conn.scheme.Scheme;
  8. import org.apache.http.conn.scheme.SchemeRegistry;
  9. import org.apache.http.conn.ssl.SSLSocketFactory;
  10. import org.apache.http.impl.client.DefaultHttpClient;
  11. //用于进行Https请求的HttpClient
  12. public class SSLClient extends DefaultHttpClient{
  13. public SSLClient() throws Exception{
  14. super();
  15. SSLContext ctx = SSLContext.getInstance("TLS");
  16. X509TrustManager tm = new X509TrustManager() {
  17. @Override
  18. public void checkClientTrusted(X509Certificate[] chain,
  19. String authType) throws CertificateException {
  20. }
  21. @Override
  22. public void checkServerTrusted(X509Certificate[] chain,
  23. String authType) throws CertificateException {
  24. }
  25. @Override
  26. public X509Certificate[] getAcceptedIssuers() {
  27. return null;
  28. }
  29. };
  30. ctx.init(null, new TrustManager[]{tm}, null);
  31. SSLSocketFactory ssf = new SSLSocketFactory(ctx,SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
  32. ClientConnectionManager ccm = this.getConnectionManager();
  33. SchemeRegistry sr = ccm.getSchemeRegistry();
  34. sr.register(new Scheme("https", 443, ssf));
  35. }
  36. }

2.写一个利用HttpClient发送post请求的类

  1. import java.util.ArrayList;
  2. import java.util.Iterator;
  3. import java.util.List;
  4. import java.util.Map;
  5. import java.util.Map.Entry;
  6. import org.apache.http.HttpEntity;
  7. import org.apache.http.HttpResponse;
  8. import org.apache.http.NameValuePair;
  9. import org.apache.http.client.HttpClient;
  10. import org.apache.http.client.entity.UrlEncodedFormEntity;
  11. import org.apache.http.client.methods.HttpPost;
  12. import org.apache.http.message.BasicNameValuePair;
  13. import org.apache.http.util.EntityUtils;
  14. /*
  15. * 利用HttpClient进行post请求的工具类
  16. */
  17. public class HttpClientUtil {
  18. public String doPost(String url,Map<String,String> map,String charset){
  19. HttpClient httpClient = null;
  20. HttpPost httpPost = null;
  21. String result = null;
  22. try{
  23. httpClient = new SSLClient();
  24. httpPost = new HttpPost(url);
  25. //设置参数
  26. List<NameValuePair> list = new ArrayList<NameValuePair>();
  27. Iterator iterator = map.entrySet().iterator();
  28. while(iterator.hasNext()){
  29. Entry<String,String> elem = (Entry<String, String>) iterator.next();
  30. list.add(new BasicNameValuePair(elem.getKey(),elem.getValue()));
  31. }
  32. if(list.size() > 0){
  33. UrlEncodedFormEntity entity = new UrlEncodedFormEntity(list,charset);
  34. httpPost.setEntity(entity);
  35. }
  36. HttpResponse response = httpClient.execute(httpPost);
  37. if(response != null){
  38. HttpEntity resEntity = response.getEntity();
  39. if(resEntity != null){
  40. result = EntityUtils.toString(resEntity,charset);
  41. }
  42. }
  43. }catch(Exception ex){
  44. ex.printStackTrace();
  45. }
  46. return result;
  47. }
  48. }

3.调用post请求的测试代码

    1. import java.util.HashMap;
    2. import java.util.Map;
    3. //对接口进行测试
    4. public class TestMain {
    5. private String url = "https://192.168.1.101/";
    6. private String charset = "utf-8";
    7. private HttpClientUtil httpClientUtil = null;
    8. public TestMain(){
    9. httpClientUtil = new HttpClientUtil();
    10. }
    11. public void test(){
    12. String httpOrgCreateTest = url + "httpOrg/create";
    13. Map<String,String> createMap = new HashMap<String,String>();
    14. createMap.put("authuser","*****");
    15. createMap.put("authpass","*****");
    16. createMap.put("orgkey","****");
    17. createMap.put("orgname","****");
    18. String httpOrgCreateTestRtn = httpClientUtil.doPost(httpOrgCreateTest,createMap,charset);
    19. System.out.println("result:"+httpOrgCreateTestRtn);
    20. }
    21. public static void main(String[] args){
    22. TestMain main = new TestMain();
    23. main.test();
    24. }
    25. }