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1. 记录几个常用方法
请求需求 | 请求代码 | 备注 | 无参get请求 | HttpUtil.doGet(url) | 参数:路径 | 带参数get请求 | HttpUtil.doGet(url,map) | 参数:路径url,Map(String,String)键值对参数 | 无参post请求 | HttpUtil.doPost(url) | 效果同HttpUtil.doPost(url,空map) | post请求(map键值对) | HttpUtil.doPost(url,map) | 参数:路径url,Map(String,String)键值对参数 | post请求(json参数) | HttpUtil.doPost(url, content, type) | url: 路径
content: 内容
type:
1. application/json
2. application/xml
3. text/plain | post请求(json参数) | HttpUtil.doPostWithHeader(url,param,map) | url: 路径;param:json字串;map: 请求头参数 | 2. 使用
2.1 引入相关依赖
<!-- pom.xml -->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.11.0</version>
</dependency>2.2 工具类
package com.example.study1.common.utils;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
import java.security.GeneralSecurityException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import org.apache.commons.io.IOUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
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.ConnectTimeoutException;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author Sean
* @createDate 2022/7/20-22:28
*/
public class HttpUtil {
private static final Logger log = LoggerFactory.getLogger(HttpUtil.class);
private static PoolingHttpClientConnectionManager connMgr;
private static RequestConfig requestConfig;
private static final int MAX_TIMEOUT = 3600000;// 7秒
private static final String UTF_8 = &#34;UTF-8&#34;;
public static final String JSON = &#34;json&#34;;
public static final String XML = &#34;xml&#34;;
static {
// 设置连接池
connMgr = new PoolingHttpClientConnectionManager();
// 设置连接池大小
connMgr.setMaxTotal(100);
connMgr.setDefaultMaxPerRoute(connMgr.getMaxTotal());
RequestConfig.Builder configBuilder = RequestConfig.custom();
// 设置连接超时
configBuilder.setConnectTimeout(MAX_TIMEOUT);
// 设置读取超时
configBuilder.setSocketTimeout(MAX_TIMEOUT);
// 设置从连接池获取连接实例的超时
configBuilder.setConnectionRequestTimeout(MAX_TIMEOUT);
// 在提交请求之前 测试连接是否可用
configBuilder.setStaleConnectionCheckEnabled(true);
requestConfig = configBuilder.build();
}
/**
* 发送 GET 请求(HTTP),不带输入数据
*
* @param url
* @return
* @throws IOException
*/
public static String doGet(String url) throws IOException {
return doGet(url, null);
}
/**
* 发送 GET 请求(HTTP),K-V形式
*
* @param url
* @param params
* @return
* @throws IOException
*/
public static String doGet(String url, Map<String, String> params) throws IOException {
int i = 0;
if (params != null) {
StringBuffer param = new StringBuffer();
for (String key : params.keySet()) {
if (i == 0)
param.append(&#34;?&#34;);
else
param.append(&#34;&&#34;);
param.append(key).append(&#34;=&#34;).append(params.get(key));
i++;
}
url += param;
}
String result = null;
CloseableHttpClient httpclient = HttpClients.createDefault();
CloseableHttpResponse response = null;
HttpEntity entity = null;
try {
HttpGet httpGet = new HttpGet(url);
response = httpclient.execute(httpGet);
// int statusCode = response.getStatusLine().getStatusCode();
entity = response.getEntity();
if (entity != null) {
InputStream instream = entity.getContent();
result = IOUtils.toString(instream, UTF_8);
}
} finally {
// 最后别忘了关闭应该关闭的资源,适当的释放资源
try {
// 这个方法也可以把底层的流给关闭了
EntityUtils.consume(entity);
// if (null != response) {
// response.close();
// }
} catch (IOException e) {
e.printStackTrace();
}
}
return result;
}
/**
* 发送 POST 请求(HTTP),不带输入数据
*
* @param apiUrl
* @return
* @throws ConnectTimeoutException
*/
public static String doPost(String apiUrl) throws IOException {
return doPost(apiUrl, new HashMap<String, String>());
}
/**
* 发送 POST 请求(HTTP),K-V形式
*
* @param apiUrl API接口URL
* @param params 参数map
* @return
* @throws ConnectTimeoutException
*/
public static String doPost(String apiUrl, Map<String, String> params) throws IOException {
CloseableHttpClient httpClient = HttpClients.createDefault();
String httpStr = null;
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
try {
httpPost.setConfig(requestConfig);
List<NameValuePair> pairList = new ArrayList<>(params.size());
for (Map.Entry<String, String> entry : params.entrySet()) {
NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry.getValue());
pairList.add(pair);
}
httpPost.setEntity(new UrlEncodedFormEntity(pairList, Charset.forName(&#34;UTF-8&#34;)));
response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
httpStr = EntityUtils.toString(entity, &#34;UTF-8&#34;);
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 POST 请求(HTTP),JSON形式
*
* @param apiUrl
* @param content 内容
* @return
* @throws IOException
*/
public static String doPost(String apiUrl, String content, String type) throws IOException {
CloseableHttpClient httpClient = HttpClients.createDefault();
String httpStr = null;
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
try {
httpPost.setConfig(requestConfig);
StringEntity stringEntity = new StringEntity(content, &#34;UTF-8&#34;);// 解决中文乱码问题
stringEntity.setContentEncoding(&#34;UTF-8&#34;);
if (JSON.equals(type) || &#34;application/json;charset=UTF-8&#34;.equals(type)) {
stringEntity.setContentType(&#34;application/json&#34;);
} else if (XML.equals(type)) {
stringEntity.setContentType(&#34;application/xml&#34;);
} else {
stringEntity.setContentType(&#34;text/plain&#34;);
}
httpPost.setEntity(stringEntity);
response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
// System.out.println(response.getStatusLine().getStatusCode());
httpStr = EntityUtils.toString(entity, &#34;UTF-8&#34;);
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 POST 请求(HTTP),JSON形式 + url k-v参数
* @param apiUrl
* @param content
* @param params
* @param type
* @return
* @throws IOException
*/
public static String doPost(String apiUrl, String content,Map<String, String> params, String type) throws IOException {
// url参数拼接
if (params != null) {
int i = 0;
StringBuffer param = new StringBuffer();
for (String key : params.keySet()) {
if (i == 0)
param.append(&#34;?&#34;);
else
param.append(&#34;&&#34;);
param.append(key).append(&#34;=&#34;).append(params.get(key));
i++;
}
apiUrl += param;
}
CloseableHttpClient httpClient = HttpClients.createDefault();
String httpStr = null;
log.info(&#34;本次请求apiUrl:&#34;+apiUrl);
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
try {
httpPost.setConfig(requestConfig);
StringEntity stringEntity = new StringEntity(content, &#34;UTF-8&#34;);// 解决中文乱码问题
stringEntity.setContentEncoding(&#34;UTF-8&#34;);
if (JSON.equals(type)) {
stringEntity.setContentType(&#34;application/json&#34;);
} else if (XML.equals(type)) {
stringEntity.setContentType(&#34;application/xml&#34;);
} else {
stringEntity.setContentType(&#34;text/plain&#34;);
}
httpPost.setEntity(stringEntity);
response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
// System.out.println(response.getStatusLine().getStatusCode());
httpStr = EntityUtils.toString(entity, &#34;UTF-8&#34;);
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
public static String doPost(String apiUrl, String content, String type,Map<String, String> headers) throws IOException {
CloseableHttpClient httpClient = HttpClients.createDefault();
String httpStr = null;
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
try {
httpPost.setConfig(requestConfig);
if (headers != null) {
for (String headerName : headers.keySet()) {
httpPost.setHeader(headerName, headers.get(headerName));
}
}
StringEntity stringEntity = new StringEntity(content, &#34;UTF-8&#34;);// 解决中文乱码问题
stringEntity.setContentEncoding(&#34;UTF-8&#34;);
if (JSON.equals(type)) {
stringEntity.setContentType(&#34;application/json&#34;);
} else if (XML.equals(type)) {
stringEntity.setContentType(&#34;application/xml&#34;);
} else {
stringEntity.setContentType(&#34;text/plain&#34;);
}
httpPost.setEntity(stringEntity);
response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
// System.out.println(response.getStatusLine().getStatusCode());
httpStr = EntityUtils.toString(entity, &#34;UTF-8&#34;);
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 SSL POST 请求(HTTPS),K-V形式
*
* @param apiUrl API接口URL
* @param params 参数map
* @return
*/
public static String doPostSSL(String apiUrl, Map<String, Object> params) {
CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory()).setConnectionManager(connMgr)
.setDefaultRequestConfig(requestConfig).build();
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
String httpStr = null;
try {
httpPost.setConfig(requestConfig);
List<NameValuePair> pairList = new ArrayList<NameValuePair>(params.size());
for (Map.Entry<String, Object> entry : params.entrySet()) {
NameValuePair pair = new BasicNameValuePair(entry.getKey(), entry.getValue().toString());
pairList.add(pair);
}
httpPost.setEntity(new UrlEncodedFormEntity(pairList, Charset.forName(&#34;utf-8&#34;)));
response = httpClient.execute(httpPost);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode != HttpStatus.SC_OK) {
return null;
}
HttpEntity entity = response.getEntity();
if (entity == null) {
return null;
}
httpStr = EntityUtils.toString(entity, &#34;utf-8&#34;);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 发送 SSL POST 请求(HTTPS),JSON形式
*
* @param apiUrl API接口URL
* @param json JSON对象
* @return
*/
public static String doPostSSL(String apiUrl, Object json) {
CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory()).setConnectionManager(connMgr)
.setDefaultRequestConfig(requestConfig).build();
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
String httpStr = null;
try {
httpPost.setConfig(requestConfig);
StringEntity stringEntity = new StringEntity(json.toString(), &#34;UTF-8&#34;);// 解决中文乱码问题
stringEntity.setContentEncoding(&#34;UTF-8&#34;);
stringEntity.setContentType(&#34;application/json&#34;);
httpPost.setEntity(stringEntity);
response = httpClient.execute(httpPost);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode != HttpStatus.SC_OK) {
return null;
}
HttpEntity entity = response.getEntity();
if (entity == null) {
return null;
}
httpStr = EntityUtils.toString(entity, &#34;utf-8&#34;);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
response.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 创建SSL安全连接
*
* @return
*/
private static SSLConnectionSocketFactory createSSLConnSocketFactory() {
SSLConnectionSocketFactory sslsf = null;
try {
SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
return true;
}
}).build();
sslsf = new SSLConnectionSocketFactory(sslContext, new X509HostnameVerifier() {
@Override
public boolean verify(String arg0, SSLSession arg1) {
return true;
}
@Override
public void verify(String host, SSLSocket ssl) throws IOException {
}
@Override
public void verify(String host, X509Certificate cert) throws SSLException {
}
@Override
public void verify(String host, String[] cns, String[] subjectAlts) throws SSLException {
}
});
} catch (GeneralSecurityException e) {
e.printStackTrace();
}
return sslsf;
}
/**
* 发送 SSL POST 请求(HTTPS),加载证书
*
* @return
*/
public static String doPostSSL(String url, String content, String type, Map<String, String> headers, SSLConnectionSocketFactory sslsf) {
CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(createSSLConnSocketFactory()).setConnectionManager(connMgr)
.setDefaultRequestConfig(requestConfig).build();
HttpPost httpPost = new HttpPost(url);
CloseableHttpResponse response = null;
String httpStr = null;
try {
httpPost.setConfig(requestConfig);
if (headers != null) {
for (String headerName : headers.keySet()) {
httpPost.setHeader(headerName, headers.get(headerName));
}
}
StringEntity stringEntity = new StringEntity(content, &#34;UTF-8&#34;);// 解决中文乱码问题
stringEntity.setContentEncoding(&#34;UTF-8&#34;);
if (JSON.equals(type)) {
stringEntity.setContentType(&#34;application/json&#34;);
} else if (XML.equals(type)) {
stringEntity.setContentType(&#34;application/xml&#34;);
} else {
stringEntity.setContentType(&#34;text/plain&#34;);
}
httpPost.setEntity(stringEntity);
response = httpClient.execute(httpPost);
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode != HttpStatus.SC_OK) {
return null;
}
HttpEntity entity = response.getEntity();
if (entity == null) {
return null;
}
httpStr = EntityUtils.toString(entity, &#34;utf-8&#34;);
} catch (Exception e) {
e.printStackTrace();
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
response.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
/**
* 自定义POST带请求头
* 请求类型为为:application/json
*
*/
public static String doPostWithHeader(String apiUrl, String content, Map<String,String> map) throws IOException {
CloseableHttpClient httpClient = HttpClients.createDefault();
String httpStr = null;
HttpPost httpPost = new HttpPost(apiUrl);
CloseableHttpResponse response = null;
for(Map.Entry<String,String> entry : map.entrySet()){
httpPost.setHeader(entry.getKey(),entry.getValue());
}
try {
httpPost.setConfig(requestConfig);
StringEntity stringEntity = new StringEntity(content, &#34;UTF-8&#34;);// 解决中文乱码问题
stringEntity.setContentEncoding(&#34;UTF-8&#34;);
stringEntity.setContentType(&#34;application/json&#34;);
httpPost.setEntity(stringEntity);
response = httpClient.execute(httpPost);
HttpEntity entity = response.getEntity();
// System.out.println(response.getStatusLine().getStatusCode());
httpStr = EntityUtils.toString(entity, &#34;UTF-8&#34;);
} finally {
if (response != null) {
try {
EntityUtils.consume(response.getEntity());
} catch (IOException e) {
e.printStackTrace();
}
}
}
return httpStr;
}
}2.3 自己写的测试方法
/**
* doGgt(url)
*/
@Test
void testH1(){
String s = null;
try {
s = HttpUtil.doGet(&#34;https://ssln.top&#34;);
} catch (IOException e) {
log.info(e.getMessage());
}
System.out.println(s);
}
/**
* doGet(String url, Map<String, String> params)
*/
@Test
void testH2(){
Map<String,String> map = new HashMap<>();
map.put(&#34;deptCode&#34;,&#34;1&#34;);
map.put(&#34;deptName&#34;,&#34;2&#34;);
String s = null;
try {
s = HttpUtil.doGet(&#34;http://localhost:8090/dept/listA&#34;,map);
} catch (IOException e) {
log.info(e.getMessage());
}
System.out.println(s);
}
/**
* post key value 键值对
* doPost(url) == doPost(url,new HashMap<String, String>())
* doPost(String url,Map<String, String> params)
*/
@Test
void testH3(){
Map<String,String> map = new HashMap<>();
map.put(&#34;deptCode&#34;,&#34;he&#34;);
map.put(&#34;deptName&#34;,&#34;和&#34;);
map.put(&#34;parentCode&#34;,&#34;0&#34;);
String s = null;
try {
s = HttpUtil.doPost(&#34;http://localhost:8090/dept/saveA&#34;,map);
} catch (IOException e) {
log.info(e.getMessage());
}
System.out.println(s);
}
/**
* doPost json格式
* doPost(String apiUrl, String content, String type)
*/
@Test
void testH4(){
String param = &#34;{\&#34;deptCode\&#34;:\&#34;1001\&#34;,\&#34;deptName\&#34;:\&#34;testsssss\&#34;,\&#34;parentCode\&#34;:\&#34;0\&#34;}&#34;;
String s = null;
try {
s = HttpUtil.doPost(&#34;http://localhost:8090/dept/save&#34;,param,&#34;application/json;charset=UTF-8&#34;);
} catch (IOException e) {
log.info(e.getMessage());
}
System.out.println(s);
}
/**
* HttpUtil.doPostWithHeader(url,param,map)
* 路径,json字串,请求头数据
*/
@Test
void testH5(){
String param = &#34;{\&#34;sfzh\&#34;: \&#34;33090319590622421X\&#34;}&#34;;
Map<String,String> map = new HashMap<>();
map.put(&#34;Authorization&#34;,&#34;eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpZCI6InByb3ZpZGVsYW5Ub2tlbl8wMDEiLCJleHAiOjE2NzAzODQ1MDF9.-sUhCPyg-H6h7H6Od1U_xBqwV80beAB7VxZdWZUPf4M&#34;);
map.put(&#34;user_token&#34;,&#34;eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJpZCI6InByb3ZpZGVsYW5Ub2tlbl8wMDEiLCJleHAiOjE2NzAzODQ1MDF9.-sUhCPyg-H6h7H6Od1U_xBqwV80beAB7VxZdWZUPf4M&#34;);
String s = null;
try {
s = HttpUtil.doPostWithHeader(&#34;http://localhost:8078/providelan/patientInformation/getInfo&#34;,param,map);
} catch (IOException e) {
log.info(e.getMessage());
}
System.out.println(s);
} |
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