HttpClientUtils工具类封装，doGet()、doPost()、doPut()、doDelete()
概述
HttpClient 是 Apache Jakarta Common 下的子项目，可以用来提供高效的、最新的、功能丰富的支持 HTTP 协议的客户端编程工具包，并且它支持 HTTP 协议最新的版本。
HttpClientUtils工具类封装，doGet()、doPost()、doPut()、doDelete()
1、doGet不带参数示例
// 创建Httpclient对象
CloseableHttpClient httpclient = HttpClients.createDefault();
// 创建http GET请求
HttpGet httpGet = new HttpGet("https://xiaoyuan.zhaopin.com/api/sou?pageNumber=2");
CloseableHttpResponse response = null;
try
{
// 执行请求
response = httpclient.execute(httpGet);
// 判断返回状态是否为200
if (response.getStatusLine().getStatusCode() == 200)
{
String content = EntityUtils.toString(response.getEntity(), "UTF-8");
System.out.println("内容长度：" + content.length());
System.out.println(content);// 响应的内容
}
} finally
{
if (response != null)
{
response.close();
}
httpclient.close();
}
2、doGet带参数示例
// 创建Httpclient对象
CloseableHttpClient httpclient = HttpClients.createDefault();
// 定义请求的参数
URI uri = new URIBuilder("https://xiaoyuan.zhaopin.com/api/sou").setParameter("pageNumber", "1")
.setParameter("keyWord", "java").build();
System.out.println(uri);
// 创建http GET请求
HttpGet httpGet = new HttpGet(uri);
CloseableHttpResponse response = null;
try
{
// 执行请求
response = httpclient.execute(httpGet);
// 判断返回状态是否为200
if (response.getStatusLine().getStatusCode() == 200)
{
String content = EntityUtils.toString(response.getEntity(), "UTF-8");
System.out.println(content);
}
} finally
{
if (response != null)
{
response.close();
}
httpclient.close();
}3、doPost不带参数示例
// 创建Httpclient对象
CloseableHttpClient httpclient = HttpClients.createDefault();
// 创建http POST请求
HttpPost httpPost = new HttpPost("http://www.oschina.net/");
httpPost.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.97 Safari/537.36");
CloseableHttpResponse response = null;
try {
// 执行请求
response = httpclient.execute(httpPost);
// 判断返回状态是否为200
if (response.getStatusLine().getStatusCode() == 200) {
String content = EntityUtils.toString(response.getEntity(), "UTF-8");
System.out.println(content);
}
} finally {
if (response != null) {
response.close();
}
httpclient.close();
}4、doPost带参数示例
// 创建Httpclient对象
CloseableHttpClient httpclient = HttpClients.createDefault();
// 添加信息
HttpPost httpPost = new HttpPost("http://39.106.243.121/eto/add");
// 设置2个post参数，一个是scope、一个是q
List pairs = new ArrayList(0);
pairs.add(new BasicNameValuePair("CityId", "530"));
pairs.add(new BasicNameValuePair("CityName", "北京"));
pairs.add(new BasicNameValuePair("SubCompanyNumber", "CC000773458D90000002000"));
pairs.add(new BasicNameValuePair("CompanyName", "Oracle"));
pairs.add(new BasicNameValuePair("CompanyTypeId", "5"));
pairs.add(new BasicNameValuePair("IndustryName", "软件"));
pairs.add(new BasicNameValuePair("CompanySize", "10000人以上"));
pairs.add(new BasicNameValuePair("CompanyNumber", "DC000773458"));
// 构造一个form表单式的实体
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(pairs);
// 将请求实体设置到httpPost对象中
httpPost.setEntity(formEntity);
CloseableHttpResponse response = null;
try
{
// 执行请求
response = httpclient.execute(httpPost);
// 判断返回状态是否为200
if (response.getStatusLine().getStatusCode() == 200)
{
String content = EntityUtils.toString(response.getEntity(), "UTF-8");
System.out.println(content);
}
} finally
{
if (response != null)
{
response.close();
}
httpclient.close();
}
5、HttpClientUtils工具类更精细化的封装
package com.huazai.b2c.aiyou.utils;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import com.huazai.b2c.aiyou.repo.HttpResultData;
/**
*
* @author HuaZai
* @contact [email protected]
*
* @description HttpClient工具类
*
* @className HttpUtil
* @package com.huazai.b2c.aiyou.utils
* @createdTime 2017年06月17日
*
* @version V1.0.0
*/
public class HttpClientUtils
{
private CloseableHttpClient httpClient;
public HttpClientUtils()
{
httpClient = HttpClients.createDefault();
}
/**
*
* @author HuaZai
* @contact [email protected]
* @title doGet
*
* @description 带参数的doGet请求
*
* @createdTime 2017年06月17日
* @param uri
* @param map
* @return
* @throws Exception
* @return HttpResultData
*
* @version : V1.0.0
*/
public HttpResultData doGet(String uri, Map map)
{
CloseableHttpResponse response = null;
try
{
// 1、创建URIBuilder对象
URIBuilder uriBuilder = new URIBuilder(uri);
encapRequestParams(map, uriBuilder);
// 3、创建 HttpGet对象
HttpGet httpGet = new HttpGet(uriBuilder.build());
// 4、使用httpClient发起请求
response = httpClient.execute(httpGet);
// 5、解析返回结果，封装返回对象HttpResultData
HttpResultData resultData = this.parseHttpResultData(response);
// 打印日志输出
return resultData;
} catch (Exception e)
{
e.printStackTrace();
// 打印日志输出
} finally
{
// 6、释放资源
try
{
if (response != null)
{
response.close();
}
httpClient.close();
} catch (IOException e)
{
// 打印日志输出
e.printStackTrace();
}
}
return null;
}
/**
*
* @author HuaZai
* @contact [email protected]
* @title doGet
*
* @description 不带参数的doGet请求
*
* @createdTime 2017年06月17日
* @param uri
* @return
* @throws Exception
* @return HttpResultData
*
* @version : V1.0.0
*/
public HttpResultData doGet(String uri) throws Exception
{
return this.doGet(uri, null);
}
/**
*
* @author HuaZai
* @contact [email protected]
* @title doPost
*
* @description 带参数的doPost请求
*
* @createdTime 2017年06月17日
* @param uri
* @param map
* @return
* @return HttpResultData
*
* @version : V1.0.0
* @throws Exception
*/
public HttpResultData doPost(String uri, Map map)
{
CloseableHttpResponse response = null;
try
{
// 1、声明 HttpPost对象
HttpPost request = new HttpPost();
// 2、封装请求参数，请求数据表单
UrlEncodedFormEntity entity = this.encapRequestParams(map);
// 3、设置请求数据表单
request.setEntity(entity);
// 4、通过HttpClient执行请求
response = httpClient.execute(request);
// 5、解析返回结果，封装返回对象HttpResultData
HttpResultData resultData = this.parseHttpResultData(response);
// 打印日志输出
return resultData;
} catch (Exception e)
{
// 打印日志输出
e.printStackTrace();
} finally
{
// 6、释放资源
try
{
if (response != null)
{
response.close();
}
httpClient.close();
} catch (IOException e)
{
// 打印日志输出
e.printStackTrace();
}
}
return null;
}
/**
*
* @author HuaZai
* @contact [email protected]
* @title doPost
*
* @description 不带参数的doPost请求
*
* @createdTime 2017年06月17日
* @param uri
* @return
* @return HttpResultData
*
* @version : V1.0.0
* @throws Exception
*/
public HttpResultData doPost(String uri) throws Exception
{
return this.doPost(uri, null);
}
/**
*
* @author HuaZai
* @contact [email protected]
* @title doPut
*
* @description 带参数的doPut请求
*
* @createdTime 2017年06月17日
* @param uri
* @param map
* @return
* @return HttpResultData
*
* @version : V1.0.0
* @throws Exception
*/
public HttpResultData doPut(String uri, Map map)
{
CloseableHttpResponse response = null;
try
{
// 1、生命HttpPut对象
HttpPut request = new HttpPut();
// 2、封装请求参数
UrlEncodedFormEntity entity = this.encapRequestParams(map);
// 3、设置请求表单数据
request.setEntity(entity);
// 4、通过HttpClient执行请求
response = httpClient.execute(request);
// 5、封装解析返回结果，封装返回对象HttpResultData
HttpResultData resultData = this.parseHttpResultData(response);
// 打印日志输出
return resultData;
} catch (Exception e)
{
// 打印日志输出
e.printStackTrace();
} finally
{
// 6、释放资源
try
{
if (response != null)
{
response.close();
}
httpClient.close();
} catch (IOException e)
{
// 打印日志输出
e.printStackTrace();
}
}
return null;
}
/**
*
* @author HuaZai
* @contact [email protected]
* @title doPut
*
* @description 不带参数的doPut请求
*
* @createdTime 2017年06月17日
* @param uri
* @return
* @return HttpResultData
*
* @version : V1.0.0
* @throws Exception
*/
public HttpResultData doPut(String uri) throws Exception
{
return this.doPut(uri, null);
}
/**
*
* @author HuaZai
* @contact [email protected]
* @title doDelete
*
* @description 带参数的doDelete请求
*
* @createdTime 2017年06月17日
* @param uri
* @param map
* @return
* @return HttpResultData
*
* @version : V1.0.0
* @throws Exception
*/
public HttpResultData doDelete(String uri, Map map)
{
CloseableHttpResponse response = null;
try
{
// 1、创建URIBuilder对象
URIBuilder uriBuilder = new URIBuilder(uri);
// 2、设置请求参数
this.encapRequestParams(map, uriBuilder);
// 3、创建 HttpGet对象
HttpDelete request = new HttpDelete(uriBuilder.build());
// 4、使用httpClient发起请求
response = httpClient.execute(request);
// 5、解析返回结果，封装返回对象HttpResultData
HttpResultData resultData = this.parseHttpResultData(response);
// 打印日志输出
return resultData;
} catch (Exception e)
{
// 打印日志输出
e.printStackTrace();
} finally
{
// 6、释放资源
try
{
if (response != null)
{
response.close();
}
httpClient.close();
} catch (IOException e)
{
// 打印日志输出
e.printStackTrace();
}
}
return null;
}
/**
*
* @author HuaZai
* @contact [email protected]
* @title doDelete
*
* @description 不带参数的doDelete请求
*
* @createdTime 2017年06月17日
* @param uri
* @return
* @return HttpResultData
*
* @version : V1.0.0
* @throws Exception
*/
public HttpResultData doDelete(String uri) throws Exception
{
return this.doDelete(uri, null);
}
/**
*
* @author HuaZai
* @contact [email protected]
* @title parseHttpResultData
*
* @description 解析返回结果，封装返回对象HttpResultData
*
* @createdTime 2017年06月17日
* @param response
* @return
* @throws IOException
* @return HttpResultData
*
* @version : V1.0.0
*/
private HttpResultData parseHttpResultData(CloseableHttpResponse response) throws IOException
{
// 响应状态码
int code = response.getStatusLine().getStatusCode();
String body = null;
// 响应消息体
HttpEntity httpEntity = response.getEntity();
if (httpEntity != null)
{
body = EntityUtils.toString(httpEntity, "UTF-8");
}
// 封装返回实体
HttpResultData resultData = new HttpResultData(code, body);
return resultData;
}
/**
*
* @author HuaZai
* @contact [email protected]
* @title encapRequestParams
*
* @description 封装请求参数，请求数据表单
*
* @createdTime 2017年06月17日
* @param map
* @return
* @throws Exception
* @return UrlEncodedFormEntity
*
* @version : V1.0.0
*/
private UrlEncodedFormEntity encapRequestParams(Map map) throws Exception
{
// 是否是带参数的请求
if (map != null)
{
// 声明表单容器
List parameters = new ArrayList<>();
for (Map.Entry entry : map.entrySet())
{
// 封装容器
BasicNameValuePair nameValuePair = new BasicNameValuePair(entry.getKey(), entry.getValue().toString());
parameters.add(nameValuePair);
}
// 创建表单实体
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(parameters, "UTF-8");
return entity;
}
return null;
}
/**
*
* @author HuaZai
* @contact [email protected]
* @title encapRequestParams
*
* @description 设置请求参数
*
* @createdTime 2017年06月17日
* @param map
* @param uriBuilder
* @return void
*
* @version : V1.0.0
*/
private void encapRequestParams(Map map, URIBuilder uriBuilder)
{
// 是否是带参数的请求
if (map != null)
{
for (Map.Entry entry : map.entrySet())
{
// 封装请求参数
uriBuilder.addParameter(entry.getKey(), entry.getValue().toString());
}
}
}
}
好了，关于 HttpClientUtils工具类封装，doGet()、doPost()、doPut()、doDelete() 就写到这儿了，如果还有什么疑问或遇到什么问题欢迎扫码提问，也可以给我留言哦，我会一一详细的解答的。
歇后语：“ 共同学习，共同进步 ”，也希望大家多多关注CSND的IT社区。
| 作 者： | 华 仔 |
| 联系作者： | [email protected] |
| 来 源： | CSDN (Chinese Software Developer Network) |
| 原 文： | https://blog.csdn.net/Hello_World_QWP/article/details/102912797 |
| 版权声明： | 本文为博主原创文章，请在转载时务必注明博文出处！ |