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com.egzosn.pay.common.http.ClientHttpRequest Maven / Gradle / Ivy
package com.egzosn.pay.common.http;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONException;
import com.egzosn.pay.common.bean.MethodType;
import com.egzosn.pay.common.bean.result.PayException;
import com.egzosn.pay.common.exception.PayErrorException;
import com.egzosn.pay.common.util.XML;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.*;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpResponseException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpEntityEnclosingRequestBase;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.util.EntityUtils;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URI;
import java.util.Map;
import static com.egzosn.pay.common.http.UriVariables.getMapToParameters;
/**
* 一个HTTP请求的客户端
* @author: egan
*
* email [email protected]
* date 2017/3/4 17:56
*
*/
public class ClientHttpRequest extends HttpEntityEnclosingRequestBase implements org.apache.http.client.ResponseHandler{
protected static final Log LOG = LogFactory.getLog(ClientHttpRequest.class);
public static final ContentType APPLICATION_FORM_URLENCODED_UTF_8 = ContentType.create("application/x-www-form-urlencoded", Consts.UTF_8);;
/**
* http请求方式 get pos
*/
private MethodType method;
/**
* 响应类型
*/
private Class responseType;
public ClientHttpRequest setResponseType(Class responseType) {
this.responseType = responseType;
return this;
}
/**
* 空构造
*/
public ClientHttpRequest() {
}
/**
* 根据请求地址 请求方法，请求内容对象
* @param uri 请求地址
* @param method 请求方法
* @param request 请求内容
*/
public ClientHttpRequest(URI uri, MethodType method, Object request) {
this(uri, method);
setParameters(request);
}
/**
* 根据请求地址 请求方法
* @param uri 请求地址
* @param method 请求方法
*/
public ClientHttpRequest(URI uri, MethodType method) {
this.setURI(uri);
this.method = method;
}
/**
* 根据请求地址
* @param uri 请求地址
*/
public ClientHttpRequest(URI uri) {
this.setURI(uri);
}
/**
* 根据请求地址
* @param uri 请求地址
*/
public ClientHttpRequest(String uri) {
this.setURI(URI.create(uri));
}
/**
* 根据请求地址 请求方法
* @param uri 请求地址
* @param method 请求方法
*/
public ClientHttpRequest(String uri, MethodType method) {
this.setURI(URI.create(uri));
this.method = method;
}
/**
* 根据请求地址 请求方法，请求内容对象
* @param uri 请求地址
* @param method 请求方法
* @param request 请求内容
*/
public ClientHttpRequest(String uri, MethodType method, Object request) {
this(uri, method);
setParameters(request);
}
/**
* 设置请求方式
*
* @param method 请求方式
* {@link com.egzosn.pay.common.bean.MethodType} 请求方式
*/
public void setMethod(MethodType method) {
this.method = method;
}
/**
* 获取请求方式
* @return 请求方式
*/
@Override
public String getMethod() {
return method.name();
}
/**
* 设置代理
* @param httpProxy http代理配置信息
* @return 当前HTTP请求的客户端
*/
public ClientHttpRequest setProxy(HttpHost httpProxy){
if (httpProxy != null) {
RequestConfig config = RequestConfig.custom().setProxy(httpProxy).build();
setConfig(config);
}
return this;
}
/**
* 设置请求参数
*
* @param request 请求参数
* @return 当前HTTP请求的客户端
*/
public ClientHttpRequest setParameters(Object request) {
if (null == request){
return this;
}
if (request instanceof HttpHeader){
HttpHeader entity = (HttpHeader)request;
if (null != entity.getHeaders() ){
if (LOG.isDebugEnabled()) {
LOG.debug("header : " + JSON.toJSONString(entity.getHeaders()));
}
for (Header header : entity.getHeaders()){
addHeader(header);
}
}
}else if (request instanceof HttpStringEntity){
HttpStringEntity entity = (HttpStringEntity)request;
if (!entity.isEmpty()){
setEntity(entity);
}
if (null != entity.getHeaders() ){
if (LOG.isDebugEnabled()) {
LOG.debug("header : " + JSON.toJSONString(entity.getHeaders()));
}
for (Header header : entity.getHeaders()){
addHeader(header);
}
}
} else if (request instanceof HttpEntity){
setEntity((HttpEntity)request);
} else if (request instanceof Map) {
String parameters = getMapToParameters((Map) request);
if (LOG.isDebugEnabled()) {
LOG.debug("Parameter : " + parameters);
}
StringEntity entity = new StringEntity(parameters, APPLICATION_FORM_URLENCODED_UTF_8);
setEntity(entity);
} else if (request instanceof String) {
if (LOG.isDebugEnabled()) {
LOG.debug("Parameter : " + request);
}
StringEntity entity = new StringEntity((String) request, APPLICATION_FORM_URLENCODED_UTF_8);
setEntity(entity);
} else {
String body = JSON.toJSONString(request);
if (LOG.isDebugEnabled()) {
LOG.debug("body : " + request);
}
StringEntity entity = new StringEntity(body, ContentType.APPLICATION_JSON);
setEntity(entity);
}
return this;
}
@Override
public T handleResponse(HttpResponse response) throws ClientProtocolException, IOException {
final StatusLine statusLine = response.getStatusLine();
final HttpEntity entity = response.getEntity();
String[] value = null;
if (null == entity.getContentType()){
value = new String[]{"application/x-www-form-urlencoded"};
}else {
value = entity.getContentType().getValue().split(";");
}
//这里进行特殊处理，如果状态码非正常状态，但内容类型匹配至对应的结果也进行对应的响应类型转换
if (statusLine.getStatusCode() >= 300 && statusLine.getStatusCode() != 304) {
if (isJson(value[0], "") || isXml(value[0], "") ){
return toBean(entity, value);
}
EntityUtils.consume(entity);
throw new HttpResponseException(statusLine.getStatusCode(), statusLine.getReasonPhrase());
}
if (null == responseType){
responseType = (Class) String.class;
}
return toBean(entity, value);
}
/**
* 对请求进行转化至对应的可转化类型
* @param entity 响应实体
* @param contentType 内容类型编码数组，第一个值为内容类型，第二个值为编码类型
* @return 对应的响应对象
* @throws IOException 响应类型文本转换时抛出异常
*/
private T toBean(HttpEntity entity, String[] contentType) throws IOException {
//判断内容类型是否为文本类型
if (isText(contentType[0])) {
String charset = "UTF-8";
if (null != contentType && 2 == charset.length()) {
charset = contentType[1].substring(contentType[1].indexOf("=") + 1);
}
//获取响应的文本内容
String result = EntityUtils.toString(entity, charset);
if (LOG.isDebugEnabled()){
LOG.debug("请求响应内容：\r\n" + result);
}
if (responseType.isAssignableFrom(String.class)) {
return (T) result;
}
String first = result.substring(0, 1);
//json类型
if (isJson(contentType[0], first)) {
try {
return JSON.parseObject(result, responseType);
} catch (JSONException e) {
throw new PayErrorException(new PayException("failure", String.format("类型转化异常,contentType: %s\n%s", entity.getContentType().getValue(), e.getMessage()), result));
}
}
//xml类型
if (isXml(contentType[0], first)) {
return XML.toJSONObject(result).toJavaObject(responseType);
}
throw new PayErrorException(new PayException("failure", "类型转化异常,contentType:" + entity.getContentType().getValue(), result));
}
//是否为 输入流
if (InputStream.class.isAssignableFrom(responseType)) {
return (T) entity.getContent();
}
//输出流
if (OutputStream.class.isAssignableFrom(responseType)) {
try {
T t = responseType.newInstance();
entity.writeTo((OutputStream) t);
return t;
} catch (InstantiationException e) {
throw new PayErrorException(new PayException("InstantiationException", e.getMessage()));
} catch (IllegalAccessException e) {
throw new PayErrorException(new PayException("IllegalAccessException", e.getMessage()));
}
}
throw new PayErrorException(new PayException("failure", "类型转化异常,contentType:" + entity.getContentType().getValue()));
}
/**
* 检测响应类型是否为json
* @param contentType 内容类型
* @param textFirst 文本第一个字符
* @return 布尔型， true为json内容类型
*/
private boolean isJson(String contentType, String textFirst){
return( ContentType.APPLICATION_JSON.getMimeType().equals(contentType) || "{[".indexOf(textFirst) >= 0 );
}
/**
* 检测响应类型是否为文本类型
* @param contentType 内容类型
* @return 布尔型， true为文本内容类型
*/
private boolean isText(String contentType){
return contentType.contains("xml") || contentType.contains("json") || contentType.contains("text") || contentType.contains("form-data")|| contentType.contains("x-www-form-urlencoded");
}
/**
* 检测响应类型是否为xml
* @param contentType 内容类型
* @param textFirst 文本第一个字符
* @return 布尔型， true为xml内容类型
*/
private boolean isXml(String contentType, String textFirst){
return( ContentType.APPLICATION_XML.getMimeType().equals(contentType) || "<".indexOf(textFirst) >= 0 );
}
}
