apache httpclient HTTPS发送JSON调用接口实例

1.目的：调用第三方接口
2.协议：https
3.报文格式：JSON
4.依赖jar如下 <!-- httpclient -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.5.5</version>
</dependency>

<!-- jsckson -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.4</version>
</dependency>5.相关代码
1). action类package com.koon.demo1;

import com.fasterxml.jackson.core.JsonProcessingException;

public class XinYongCardAction {

public static void main(String[] args) throws JsonProcessingException {

//uri
String uri = "https://x.xxx.com/xxx/getToken";

String mess = new AssemblingMessTool().getMess();

String returnMess = new HttpsSendMessTool().postReturnMess(uri, mess);

System.out.println(returnMess);
}
}
2). 发送报文工具类package com.koon.demo1;

import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.http.HttpEntity;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class HttpsSendMessTool {

public String getReturnMess(String uri) {

String returnMess = "";

CloseableHttpClient httpClient = null;
HttpGet httpGet = null;

try {

httpClient = (CloseableHttpClient) wrapClient();

httpGet = new HttpGet(uri);

CloseableHttpResponse httpResponse = httpClient.execute(httpGet);

HttpEntity httpEntity = httpResponse.getEntity();

returnMess = EntityUtils.toString(httpEntity, "utf-8");
} catch (Exception e) {

e.printStackTrace();
}

return returnMess;
}

public String postReturnMess(String uri, String jsonMess) {

String returnMess = "";

CloseableHttpClient httpClient = null;
HttpPost httpPost;

try {

httpClient = (CloseableHttpClient) wrapClient();

httpPost = new HttpPost(uri);

StringEntity entity = new StringEntity(jsonMess);

httpPost.setEntity(entity);

CloseableHttpResponse response = httpClient.execute(httpPost);

HttpEntity resEntity = response.getEntity();

returnMess = EntityUtils.toString(resEntity, "utf-8");
} catch (Exception e) {

e.printStackTrace();
}

return returnMess;
}

public static HttpClient wrapClient() {

try {

SSLContext context = SSLContext.getInstance("SSL");

X509TrustManager manager = new X509TrustManager() {

@Override
public X509Certificate[] getAcceptedIssuers() {
// TODO Auto-generated method stub
return null;
}

@Override
public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
// TODO Auto-generated method stub

}

@Override
public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
// TODO Auto-generated method stub

}
};

context.init(null, new TrustManager[] { manager }, null);

SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(context,
NoopHostnameVerifier.INSTANCE);

CloseableHttpClient httpClient = HttpClients.custom()
.setSSLContext(context).build();

return httpClient;
} catch (Exception e) {

System.out.println(123);
return HttpClients.createDefault();
}
}
}
3). JSON工具类package com.koon.demo1;

import java.util.Map;

import com.fasterxml.jackson.databind.ObjectMapper;

public class JsonTool {

public String getJson(Map<String, Object> mess) {

String result = "";

ObjectMapper mapper = new ObjectMapper();

try {

result = mapper.writeValueAsString(mess);
} catch (Exception e) {

e.printStackTrace();
}

return result;
}
}
4). 拼装消息对象类

package com.koon.demo1;

import java.security.MessageDigest;
import java.util.HashMap;
import java.util.Map;

public class AssemblingMessTool {

private String timestamp;
private String appKey;
private String sign;

public AssemblingMessTool() {

this.timestamp = System.currentTimeMillis() + "";
this.appKey = "key";

String tmp = "appKey=" + this.appKey + "×tamp" + this.timestamp + "&appSecret=192006250b4c09247ec02edce69f6a2d";
this.sign = MD5(tmp).toUpperCase();
}

public String getMess() {

Map<String, Object> parent = new HashMap<>();
Map<String, Object> son = new HashMap<>();

son.put("appKey", this.appKey);
son.put("timestamp", this.timestamp);

parent.put("sign", this.sign);
parent.put("params", son);

return new JsonTool().getJson(parent);
}

private String MD5(String s) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] bytes = md.digest(s.getBytes("utf-8"));
return toHex(bytes);
} catch (Exception e) {
throw new RuntimeException(e);
}
}

private static String toHex(byte[] bytes) {

final char[] HEX_DIGITS = "0123456789ABCDEF".toCharArray();
StringBuilder ret = new StringBuilder(bytes.length * 2);
for (int i = 0; i < bytes.length; i++) {
ret.append(HEX_DIGITS[(bytes[i] >> 4) & 0x0f]);
ret.append(HEX_DIGITS[bytes[i] & 0x0f]);
}
return ret.toString();
}

public String getTimeStamp() {
return timestamp;
}

public void setTimeStamp(String timeStamp) {
this.timestamp = timeStamp;
}

public String getAppKey() {
return appKey;
}

public void setAppKey(String appKey) {
this.appKey = appKey;
}

public String getSign() {
return sign;
}

public void setSign(String sign) {
this.sign = sign;
}

}