目录
所用依赖
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.78</version>
</dependency>
Get请求方式举例
代码：
public class Test {
public static void main(String[] args) {
System.out.println(doGet("http://www.baidu.com"));
}
/**
* 测试get请求方式
*
* @param apiUrl 链接
* @return 请求返回值
* @author 明快de玄米61
* @date 2021/09/05
*/
private static String doGet(String apiUrl) {
CloseableHttpClient client = null;
CloseableHttpResponse response = null;
try {
// 创建客户端连接对象
client = HttpClients.createDefault();
// 构建Get请求对象
HttpGet get = new HttpGet(apiUrl);
// 设置超时时间，其中connectionRequestTimout（从连接池获取连接的超时时间）、connetionTimeout（客户端和服务器建立连接的超时时间）、socketTimeout（客户端从服务器读取数据的超时时间），单位都是毫秒
RequestConfig config = RequestConfig.custom().setConnectTimeout(10000).setConnectionRequestTimeout(3000)
.setSocketTimeout(20000).build();
get.setConfig(config);
// 获取返回对象
response = client.execute(get);
// 整理返回值
HttpEntity entity = response.getEntity();
String result = EntityUtils.toString(entity);
return result;
} catch (Exception e) {
e.printStackTrace();
return null;
} finally {
// 关闭连接和流
try {
if (client != null) {
client.close();
}
if (response != null) {
response.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
结果：
<!DOCTYPE html><!--STATUS OK--><html> <head><meta http-equiv=content-type content=text/html;charset=utf-8><meta http-equiv=X-UA-Compatible content=IE=Edge><meta content=always name=referrer><link rel=stylesheet type=text/css href=http://s1.bdstatic.com/r/www/cache/bdorz/baidu.min.css><title>百度一下，你就知道</title></head> <body link=#0000cc> <div id=wrapper> <div id=head> <div class=head_wrapper> <div class=s_form> <div class=s_form_wrapper> <div id=lg> <img hidefocus=true src=//www.baidu.com/img/bd_logo1.png width=270 height=129> </div> <form id=form name=f action=//www.baidu.com/s class=fm> <input type=hidden name=bdorz_come value=1> <input type=hidden name=ie value=utf-8> <input type=hidden name=f value=8> <input type=hidden name=rsv_bp value=1> <input type=hidden name=rsv_idx value=1> <input type=hidden name=tn value=baidu><span class="bg s_ipt_wr"><input id=kw name=wd class=s_ipt value maxlength=255 autocomplete=off autofocus></span><span class="bg s_btn_wr"><input type=submit id=su value=百度一下 class="bg s_btn"></span> </form> </div> </div> <div id=u1> <a href=http://news.baidu.com name=tj_trnews class=mnav>新闻</a> <a href=http://www.hao123.com name=tj_trhao123 class=mnav>hao123</a> <a href=http://map.baidu.com name=tj_trmap class=mnav>地图</a> <a href=http://v.baidu.com name=tj_trvideo class=mnav>视频</a> <a href=http://tieba.baidu.com name=tj_trtieba class=mnav>贴吧</a> <noscript> <a href=http://www.baidu.com/bdorz/login.gif?login&tpl=mn&u=http%3A%2F%2Fwww.baidu.com%2f%3fbdorz_come%3d1 name=tj_login class=lb>登录</a> </noscript> <script>document.write('<a href="http://www.baidu.com/bdorz/login.gif?login&tpl=mn&u='+ encodeURIComponent(window.location.href+ (window.location.search === "" ? "?" : "&")+ "bdorz_come=1")+ '" name="tj_login" class="lb">登录</a>');</script> <a href=//www.baidu.com/more/ name=tj_briicon class=bri style="display: block;">更多产品</a> </div> </div> </div> <div id=ftCon> <div id=ftConw> <p id=lh> <a href=http://home.baidu.com>关于百度</a> <a href=http://ir.baidu.com>About Baidu</a> </p> <p id=cp>©2017 Baidu <a href=http://www.baidu.com/duty/>使用百度前必读</a> <a href=http://jianyi.baidu.com/ class=cp-feedback>意见反馈</a> 京ICP证030173号 <img src=//www.baidu.com/img/gs.gif> </p> </div> </div> </div> </body> </html>
POST请求方式举例
例1：获取token
代码
public class Test {
public static void main(String[] args) {
System.out.println("token：" + doPost("接口地址", "root", "123456", "default"));
}
/**
* 测试post请求方式
*
* @param apiUrl 接口地址
* @param username 用户名
* @param password 密码
* @param tenantUrl 租户标识
* @return
* @author 明快de玄米61
* @date 2021/9/6 23:12
**/
private static String doPost(String apiUrl, String username, String password, String tenantUrl) {
CloseableHttpClient client = null;
CloseableHttpResponse response = null;
String idToken = null;
try {
// 创建客户端连接对象
client = HttpClients.createDefault();
// 构建Post请求对象
HttpPost post = new HttpPost(apiUrl);
// 设置传送的内容类型是json格式
post.setHeader("Content-Type", "application/json;charset=utf-8");
// 接收的内容类型也是json格式
post.setHeader("Accept", "application/json;charset=utf-8");
// 设置超时时间，其中connectionRequestTimout（从连接池获取连接的超时时间）、connetionTimeout（客户端和服务器建立连接的超时时间）、socketTimeout（客户端从服务器读取数据的超时时间），单位都是毫秒
RequestConfig config = RequestConfig.custom().setConnectTimeout(10000).setConnectionRequestTimeout(3000).setSocketTimeout(20000).build();
post.setConfig(config);
// 准备数据
JSONObject json = new JSONObject();
json.put("username", username);
json.put("password", DigestUtils.md5Hex(password));
json.put("tenantUrl", tenantUrl);
// 设置请求体
post.setEntity(new StringEntity(json.toString(), "UTF-8"));
// 获取返回对象
response = client.execute(post);
// 整理返回值
HttpEntity entity = response.getEntity();
String result = EntityUtils.toString(entity);
// 获取idToken
if (result != null && !"".equals(result.trim())) {
JSONObject rjo = JSONObject.parseObject(result, Feature.OrderedField);
if (rjo != null && rjo.containsKey("retCode")) {
int retCode = rjo.getInteger("retCode");
if (retCode == 0 && rjo.containsKey("data")) {
JSONObject data = rjo.getJSONObject("data");
if (null != data && data.containsKey("idToken")) {
// 获取最终想要的数据
idToken = data.getString("idToken");
}
}
}
}
} catch (SocketTimeoutException e) {
e.printStackTrace();
throw new RuntimeException("获取token出现连接/超时异常");
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("获取token时执行内部代码时出现异常");
} finally {
try {
if (client != null) {
client.close();
}
if (response != null) {
response.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
return idToken;
}
}
结果
token：853b7c87-c16f-4e3b-96c4-9701fe3448ab
接口文档
Postman访问示例
例2：获取知识图谱信息
代码
public class Test {
public static void main(String[] args) {
System.out.println("图谱结果：" + doPost("接口地址", "实体id", "token令牌", "图谱实例数量"));
}
private static String doPost(String apiUrl, String instanceId, String idToken, Integer number) {
CloseableHttpClient client = null;
CloseableHttpResponse response = null;
String result = null;
try {
// 创建客户端连接对象
client = HttpClients.createDefault();
// 构建Post请求对象
HttpPost post = new HttpPost(apiUrl);
// 设置传送的内容类型是json格式
post.setHeader("Content-Type", "application/json;charset=utf-8");
// 接收的内容类型也是json格式
post.setHeader("Accept", "application/json;charset=utf-8");
post.setHeader("Authorization", "Bearer " + idToken);
// 设置超时时间，其中connectionRequestTimout（从连接池获取连接的超时时间）、connetionTimeout（客户端和服务器建立连接的超时时间）、socketTimeout（客户端从服务器读取数据的超时时间），单位都是毫秒
RequestConfig config = RequestConfig.custom().setConnectTimeout(10000).setConnectionRequestTimeout(3000).setSocketTimeout(20000).build();
post.setConfig(config);
// 准备数据
JSONObject json = new JSONObject();
json.put("pageNum", 0);
json.put("pageSize", number);
JSONObject data = new JSONObject();
String[] status = {"on"};
data.put("status", status);
String[] instanceIdSet = {instanceId};
data.put("instanceIdSet", instanceIdSet);
String[] checked = {"on"};
data.put("checked", checked);
json.put("data", data);
// 设置请求体
post.setEntity(new StringEntity(json.toString(), "UTF-8"));
// 获取返回对象
response = client.execute(post);
// 整理返回值
HttpEntity entity = response.getEntity();
result = EntityUtils.toString(entity);
} catch (SocketTimeoutException e) {
e.printStackTrace();
throw new RuntimeException("调用获取图谱接口出现连接/超时异常");
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("调用获取图谱接口执行内部代码时出现异常");
} finally {
try {
if (client != null) {
client.close();
}
if (response != null) {
response.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
return result;
}
}
接口文档
Postman访问示例
例3：调用ES高级接口获取实体信息
代码
public class HTTPURLConnectionTest {
public static void main(String[] args) {
System.out.println("图谱结果：" + doPost("接口地址", "图谱id", "实体id", "token令牌"));
}
private static String doPost(String apiUrl, String ontologyId, String instanceId, String idToken) {
CloseableHttpClient client = null;
CloseableHttpResponse response = null;
String result = null;
try {
// 创建客户端连接对象
client = HttpClients.createDefault();
// 构建Post请求对象
HttpPost post = new HttpPost(apiUrl);
// 设置传送的内容类型是json格式
post.setHeader("Content-Type", "application/json;charset=utf-8");
// 接收的内容类型也是json格式
post.setHeader("Accept", "application/json;charset=utf-8");
post.setHeader("Authorization", "Bearer " + idToken);
// 设置超时时间，其中connectionRequestTimout（从连接池获取连接的超时时间）、connetionTimeout（客户端和服务器建立连接的超时时间）、socketTimeout（客户端从服务器读取数据的超时时间），单位都是毫秒
RequestConfig config = RequestConfig.custom().setConnectTimeout(10000).setConnectionRequestTimeout(3000).setSocketTimeout(20000).build();
post.setConfig(config);
// 准备数据
JSONObject json = new JSONObject();
json.put("pageNum", 0);
json.put("pageSize", 1);
JSONObject data = new JSONObject();
data.put("ontologyId", ontologyId);
data.put("needProperties", true);
JSONArray expresses = new JSONArray();
JSONObject arr = new JSONObject();
arr.put("sign", "=");
arr.put("value", instanceId);
arr.put("key", "id");
arr.put("dataType", "String");
expresses.add(arr);
data.put("expresses", expresses);
json.put("data", data);
// 设置请求体
post.setEntity(new StringEntity(json.toString(), "UTF-8"));
// 获取返回对象
response = client.execute(post);
// 整理返回值
HttpEntity entity = response.getEntity();
result = EntityUtils.toString(entity);
} catch (SocketTimeoutException e) {
e.printStackTrace();
throw new RuntimeException("调用获取图谱接口出现连接/超时异常");
} catch (Exception e) {
e.printStackTrace();
throw new RuntimeException("调用获取图谱接口执行内部代码时出现异常");
} finally {
try {
if (client != null) {
client.close();
}
if (response != null) {
response.close();
}
} catch (Exception e) {
e.printStackTrace();
}
}
return result;
}
}
接口文档
Postman访问示例
