参考的github
使用对象封装http请求的结果
public class HttpClientResult implements Serializable {
private static final long serialVersionUID = 2168152194164783950L;
/**
* 响应状态码
*/
private int code;
/**
* 响应数据
*/
private String content;
public HttpClientResult() {
}
public HttpClientResult(int code) {
this.code = code;
}
public HttpClientResult(String content) {
this.content = content;
}
public HttpClientResult(int code, String content) {
this.code = code;
this.content = content;
}
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
@Override
public String toString() {
return "HttpClientResult [code=" + code + ", content=" + content + "]";
}
}
编写工具类
public class HttpClientUtils {
// 编码格式。发送编码格式统一用UTF-8
private static final String ENCODING = "UTF-8";
// 设置连接超时时间，单位毫秒。
private static final int CONNECT_TIMEOUT = 6000;
// 请求获取数据的超时时间(即响应时间)，单位毫秒。
private static final int SOCKET_TIMEOUT = 6000;
/**
* 发送get请求；不带请求头和请求参数
*
* @param url 请求地址
* @return
* @throws Exception
*/
public static HttpClientResult doGet(String url) throws Exception {
return doGet(url, null, null);
}
/**
* 发送get请求；带请求参数
*
* @param url 请求地址
* @param params 请求参数集合
* @return
* @throws Exception
*/
public static HttpClientResult doGet(String url, Map<String, String> params) throws Exception {
return doGet(url, null, params);
}
/**
* 发送get请求；带请求头和请求参数
*
* @param url 请求地址
* @param headers 请求头集合
* @param params 请求参数集合
* @return
* @throws Exception
*/
public static HttpClientResult doGet(String url, Map<String, String> headers, Map<String, String> params) throws Exception {
// 创建httpClient对象
CloseableHttpClient httpClient = HttpClients.createDefault();
// 创建访问的地址
URIBuilder uriBuilder = new URIBuilder(url);
if (params != null) {
Set<Entry<String, String>> entrySet = params.entrySet();
for (Entry<String, String> entry : entrySet) {
uriBuilder.setParameter(entry.getKey(), entry.getValue());
}
}
// 创建http对象
HttpGet httpGet = new HttpGet(uriBuilder.build());
/**
* setConnectTimeout：设置连接超时时间，单位毫秒。
* setConnectionRequestTimeout：设置从connect Manager(连接池)获取Connection
* 超时时间，单位毫秒。这个属性是新加的属性，因为目前版本是可以共享连接池的。
* setSocketTimeout：请求获取数据的超时时间(即响应时间)，单位毫秒。 如果访问一个接口，多少时间内无法返回数据，就直接放弃此次调用。
*/
RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(CONNECT_TIMEOUT).setSocketTimeout(SOCKET_TIMEOUT).build();
httpGet.setConfig(requestConfig);
// 设置请求头
packageHeader(headers, httpGet);
// 创建httpResponse对象
CloseableHttpResponse httpResponse = null;
try {
// 执行请求并获得响应结果
return getHttpClientResult(httpResponse, httpClient, httpGet);
} finally {
// 释放资源
release(httpResponse, httpClient);
}
}
/**
* 发送post请求；不带请求头和请求参数
*
* @param url 请求地址
* @return
* @throws Exception
*/
public static HttpClientResult doPost(String url) throws Exception {
return doPost(url, null, null);
}
/**
* 发送post请求；带请求参数
*
* @param url 请求地址
* @param params 参数集合
* @return
* @throws Exception
*/
public static HttpClientResult doPost(String url, Map<String, String> params) throws Exception {
return doPost(url, null, params);
}
/**
* 发送post请求；带请求头和请求参数
*
* @param url 请求地址
* @param headers 请求头集合
* @param params 请求参数集合
* @return
* @throws Exception
*/
public static HttpClientResult doPost(String url, Map<String, String> headers, Map<String, String> params) throws Exception {
// 创建httpClient对象
CloseableHttpClient httpClient = HttpClients.createDefault();
// 创建http对象
HttpPost httpPost = new HttpPost(url);
/**
* setConnectTimeout：设置连接超时时间，单位毫秒。
* setConnectionRequestTimeout：设置从connect Manager(连接池)获取Connection
* 超时时间，单位毫秒。这个属性是新加的属性，因为目前版本是可以共享连接池的。
* setSocketTimeout：请求获取数据的超时时间(即响应时间)，单位毫秒。 如果访问一个接口，多少时间内无法返回数据，就直接放弃此次调用。
*/
RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(CONNECT_TIMEOUT).setSocketTimeout(SOCKET_TIMEOUT).build();
httpPost.setConfig(requestConfig);
// 设置请求头
/*httpPost.setHeader("Cookie", "");
httpPost.setHeader("Connection", "keep-alive");
httpPost.setHeader("Accept", "application/json");
httpPost.setHeader("Accept-Language", "zh-CN,zh;q=0.9");
httpPost.setHeader("Accept-Encoding", "gzip, deflate, br");
httpPost.setHeader("User-Agent", "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36");*/
packageHeader(headers, httpPost);
// 封装请求参数
packageParam(params, httpPost);
// 创建httpResponse对象
CloseableHttpResponse httpResponse = null;
try {
// 执行请求并获得响应结果
return getHttpClientResult(httpResponse, httpClient, httpPost);
} finally {
// 释放资源
release(httpResponse, httpClient);
}
}
/**
* 发送put请求；不带请求参数
*
* @param url 请求地址
* @return
* @throws Exception
*/
public static HttpClientResult doPut(String url) throws Exception {
return doPut(url);
}
/**
* 发送put请求；带请求参数
*
* @param url 请求地址
* @param params 参数集合
* @return
* @throws Exception
*/
public static HttpClientResult doPut(String url, Map<String, String> params) throws Exception {
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPut httpPut = new HttpPut(url);
RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(CONNECT_TIMEOUT).setSocketTimeout(SOCKET_TIMEOUT).build();
httpPut.setConfig(requestConfig);
packageParam(params, httpPut);
CloseableHttpResponse httpResponse = null;
try {
return getHttpClientResult(httpResponse, httpClient, httpPut);
} finally {
release(httpResponse, httpClient);
}
}
/**
* 发送delete请求；不带请求参数
*
* @param url 请求地址
* @return
* @throws Exception
*/
public static HttpClientResult doDelete(String url) throws Exception {
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpDelete httpDelete = new HttpDelete(url);
RequestConfig requestConfig = RequestConfig.custom().setConnectTimeout(CONNECT_TIMEOUT).setSocketTimeout(SOCKET_TIMEOUT).build();
httpDelete.setConfig(requestConfig);
CloseableHttpResponse httpResponse = null;
try {
return getHttpClientResult(httpResponse, httpClient, httpDelete);
} finally {
release(httpResponse, httpClient);
}
}
/**
* 发送delete请求；带请求参数
*
* @param url 请求地址
* @param params 参数集合
* @return
* @throws Exception
*/
public static HttpClientResult doDelete(String url, Map<String, String> params) throws Exception {
if (params == null) {
params = new HashMap<String, String>();
}
params.put("_method", "delete");
return doPost(url, params);
}
/**
* 发送上传文件请求；
*
* @param url 请求地址
* @param params 参数集合
* @param headers 请求头集合
* @param filePath 文件路径
* @param fileType 文件类型名
* @return
* @throws Exception
*/
public static HttpClientResult uploadFile(String url,
Map<String, String> params,
Map<String, String> headers,
String filePath,
String fileType) throws Exception {
final CloseableHttpClient httpClient = HttpClients.createDefault();
final HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("Content-Type", "multipart/form-data");
packageHeader(headers, httpPost);
//创建multipart/form-data的entity的builder
final MultipartEntityBuilder builder = MultipartEntityBuilder.create();
//将文件加在http的post请求中
final File file = new File(filePath);
builder.addBinaryBody(
fileType,
new FileInputStream(file),
ContentType.APPLICATION_OCTET_STREAM,
file.getName()
);
if (params != null) {
final JSONObject jsonObject = new JSONObject();
for (Map.Entry<String, String> entry : params.entrySet()) {
jsonObject.put(entry.getKey(), entry.getValue());
}
builder.addTextBody(jsonObject.toString(), ContentType.APPLICATION_JSON.toString());
}
//生成multipart/form-data的entity
final HttpEntity multipartEntity = builder.build();
httpPost.setEntity(multipartEntity);
CloseableHttpResponse response = null;
try {
return getHttpClientResult(response, httpClient, httpPost);
}finally {
release(response,httpClient);
}
}
/**
* Description: 封装请求头
*
* @param params
* @param httpMethod
*/
public static void packageHeader(Map<String, String> params, HttpRequestBase httpMethod) {
// 封装请求头
if (params != null) {
Set<Entry<String, String>> entrySet = params.entrySet();
for (Entry<String, String> entry : entrySet) {
// 设置到请求头到HttpRequestBase对象中
httpMethod.setHeader(entry.getKey(), entry.getValue());
}
}
}
/**
* Description: 封装请求参数
*
* @param params
* @param httpMethod
* @throws UnsupportedEncodingException
*/
public static void packageParam(Map<String, String> params, HttpEntityEnclosingRequestBase httpMethod)
throws UnsupportedEncodingException {
// 封装请求参数
if (params != null) {
List<NameValuePair> nvps = new ArrayList<NameValuePair>();
Set<Entry<String, String>> entrySet = params.entrySet();
for (Entry<String, String> entry : entrySet) {
nvps.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
// 设置到请求的http对象中
httpMethod.setEntity(new UrlEncodedFormEntity(nvps, ENCODING));
}
}
/**
* Description: 获得响应结果
*
* @param httpResponse
* @param httpClient
* @param httpMethod
* @return
* @throws Exception
*/
public static HttpClientResult getHttpClientResult(CloseableHttpResponse httpResponse,
CloseableHttpClient httpClient, HttpRequestBase httpMethod) throws Exception {
// 执行请求
httpResponse = httpClient.execute(httpMethod);
// 获取返回结果
if (httpResponse != null && httpResponse.getStatusLine() != null) {
String content = "";
if (httpResponse.getEntity() != null) {
content = EntityUtils.toString(httpResponse.getEntity(), ENCODING);
}
return new HttpClientResult(httpResponse.getStatusLine().getStatusCode(), content);
}
return new HttpClientResult(HttpStatus.SC_INTERNAL_SERVER_ERROR);
}
/**
* Description: 释放资源
*
* @param httpResponse
* @param httpClient
* @throws IOException
*/
public static void release(CloseableHttpResponse httpResponse, CloseableHttpClient httpClient) throws IOException {
// 释放资源
if (httpResponse != null) {
httpResponse.close();
}
if (httpClient != null) {
httpClient.close();
}
}
}
发送请求至httpbin进行测试
httpbin
