现在很多主流平台采用rest方式的OpenAPI,例如小程序、聚合接口、公司内部接口、对外接口、微信接口等，很多采用rest轻量级数据传输的方式。
于是乎简单封装下rest请求api（其实就是几个简单java类，呵呵），可以实现http及https模式的请求，也支持JsessionId和代理模式，甚至系统自动发送邮件的功能也是用此工具类实现的。
步入正题...
RestUtil api
RestParam api
代码
RestUtil.java
/**
* rest请求通用接口工具类
*
* @author ardo
*/
public class RestUtil {
private static Logger log = LoggerFactory.getLogger(RestUtil.class);
/**
* 发起http/https请求并获取结果
*/
public static JSONObject httpRequest(RestParam restParam) {
JSONObject jsonObject = null;
// 创建代理服务器
InetSocketAddress addr = null;
Proxy proxy = null;
boolean ifProxyModel = restParam.getIfProxy()!=null && restParam.getIfProxy()!="" && "TRUE".equals(restParam.getIfProxy());
if(ifProxyModel){
addr = new InetSocketAddress(restParam.getProxyAddress(), Integer.parseInt(restParam.getProxyPort()));
proxy = new Proxy(Proxy.Type.HTTP, addr); // http 代理
Authenticator.setDefault(new MyAuthenticator(restParam.getProxyUser(), restParam.getProxyPassWord()));// 设置代理的用户和密码
}
try {
URL url = new URL(restParam.getReqUrl());
if("https".equals(restParam.getReqHttpsModel())){
TrustManager[] tmCerts = new javax.net.ssl.TrustManager[1];
tmCerts[0] = new SimpleTrustManager();
try {
SSLContext sslContext = SSLContext.getInstance("SSL");
sslContext.init(null, tmCerts, null);
HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());
HostnameVerifier hostnameVerifier = new SimpleHostnameVerifier();
HttpsURLConnection.setDefaultHostnameVerifier(hostnameVerifier);
} catch (Exception e) {
e.printStackTrace();
}
HttpsURLConnection httpUrlConn = null;
if(ifProxyModel){
httpUrlConn = (HttpsURLConnection) url.openConnection(proxy);
}else{
httpUrlConn = (HttpsURLConnection) url.openConnection();
}
//httpUrlConn.setSSLSocketFactory(ssf);
jsonObject = ardoHttpsURLConnection(httpUrlConn, restParam.getReqMethod(),
restParam.getReqContent(), restParam.getSessionId());
}else{
HttpURLConnection httpUrlConn = null;
if(ifProxyModel){
httpUrlConn = (HttpURLConnection) url.openConnection(proxy);
}else{
httpUrlConn = (HttpURLConnection) url.openConnection();
}
jsonObject = ardoHttpURLConnection(httpUrlConn, restParam.getReqMethod(),
restParam.getReqContent(), restParam.getSessionId());
}
} catch (ConnectException ce) {
log.error("API server connection timed out.");
log.error("【rest连接异常信息】"+ce.getMessage());
} catch (Exception e) {
log.error("API https or http request error:{}", e);
log.error("【rest异常信息】"+e.getMessage());
}
return jsonObject;
}
/**
* http请求方法
* @param httpUrlConn 请求路径
* @param requestMethod 请求类型POST|GET
* @param outputStr 请求内容
* @param sessionId sessionId(非必填)
* @return JSONObject类型数据
*/
public static JSONObject ardoHttpURLConnection(HttpURLConnection httpUrlConn,
String requestMethod, String outputStr, String sessionId){
JSONObject jsonObject = null;
StringBuffer buffer = new StringBuffer();
try {
//httpUrlConn = (HttpURLConnection) url.openConnection();
httpUrlConn.setDoOutput(true);
httpUrlConn.setDoInput(true);
httpUrlConn.setUseCaches(false);
if(sessionId!=null && sessionId!=""){
httpUrlConn.setRequestProperty("Cookie", "JSESSIONID="+sessionId);
}
// 设置请求方式GET/POST
httpUrlConn.setRequestMethod(requestMethod);
if ("GET".equalsIgnoreCase(requestMethod))
httpUrlConn.connect();
// 当有数据需要提交时
if (null != outputStr) {
OutputStream outputStream = httpUrlConn.getOutputStream();
//注意编码格式，防止中文乱码
outputStream.write(outputStr.getBytes("UTF-8"));
outputStream.close();
}
// 将返回的输入流转换成字符串
InputStream inputStream = httpUrlConn.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String str = null;
while ((str = bufferedReader.readLine()) != null) {
buffer.append(str);
}
bufferedReader.close();
inputStreamReader.close();
// 释放资源
inputStream.close();
inputStream = null;
httpUrlConn.disconnect();
jsonObject = JSONObject.fromObject(buffer.toString());
} catch (ConnectException ce) {
log.error("API server connection timed out.");
log.error("【rest http连接异常信息】"+ce.getMessage());
} catch (Exception e) {
log.error("API http request error:{}", e);
log.error("【rest http异常信息】"+e.getMessage());
}
return jsonObject;
}
/**
* https请求方法
* @param httpUrlConn 请求路径
* @param requestMethod 请求类型POST|GET
* @param outputStr 请求内容
* @param sessionId sessionId(非必填)
* @return JSONObject类型数据
*/
public static JSONObject ardoHttpsURLConnection(HttpsURLConnection httpUrlConn,
String requestMethod, String outputStr, String sessionId){
JSONObject jsonObject = null;
StringBuffer buffer = new StringBuffer();
try {
//httpUrlConn = (HttpsURLConnection) url.openConnection();
httpUrlConn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");
httpUrlConn.setDoOutput(true);
httpUrlConn.setDoInput(true);
httpUrlConn.setUseCaches(false);
if(sessionId!=null && sessionId!=""){
httpUrlConn.setRequestProperty("Cookie", "JSESSIONID="+sessionId);
}
//设置请求方式GET/POST
httpUrlConn.setRequestMethod(requestMethod);
httpUrlConn.setRequestProperty("Content-Type", "application/json");
if ("GET".equalsIgnoreCase(requestMethod))
httpUrlConn.connect();
// 当有数据需要提交时
if (null != outputStr) {
OutputStream outputStream = httpUrlConn.getOutputStream();
//注意编码格式，防止中文乱码
outputStream.write(outputStr.getBytes("UTF-8"));
outputStream.close();
}
// 将返回的输入流转换成字符串
InputStream inputStream = httpUrlConn.getInputStream();
InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String str = null;
while ((str = bufferedReader.readLine()) != null) {
buffer.append(str);
}
bufferedReader.close();
inputStreamReader.close();
// 释放资源
inputStream.close();
inputStream = null;
httpUrlConn.disconnect();
jsonObject = JSONObject.fromObject(buffer.toString());
} catch (ConnectException ce) {
log.error("API server connection timed out.");
log.error("【rest https连接异常信息】"+ce.getMessage());
} catch (Exception e) {
log.error("API https request error:{}", e);
log.error("【rest https异常信息】"+e.getMessage());
}
return jsonObject;
}
/**
* 代理模式所需的认证
* @author ardo
*
*/
static class MyAuthenticator extends Authenticator {
private String user = "";
private String password = "";
public MyAuthenticator(String user, String password) {
this.user = user;
this.password = password;
}
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(user, password.toCharArray());
}
}
// test url
//public static String menu_create_url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=ACCESS_TOKEN";
private static class SimpleTrustManager implements TrustManager, X509TrustManager {
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
return;
}
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
return;
}
public X509Certificate[] getAcceptedIssuers() {
return null;
}
}
private static class SimpleHostnameVerifier implements HostnameVerifier {
public boolean verify(String hostname, SSLSession session) {
return true;
}
}
public static void main(String[] args) {
//Test for rest
RestUtil.httpRequest(new RestParam("http://120.76.130.68/ardosms/v2email", "POST", "发送内容，可以是html文本",
"http", "", "TRUE", "proxy.xxx", "8080", "du...", "1zc3..."));
}
}
RestParam.java
package com.ardo.api.rest;
/**
* rest bean
*
* 该bean作为RestUtil类方法参数
* @author ardo
*
*/
public class RestParam {
/**
* 请求url路径
*/
private String reqUrl;
/**
* 请求类型"POST"或"GET"
*/
private String reqMethod;
/**
* 请求内容
*/
private String reqContent;
/**
* 请求模式"https"或"http"(默认http)
*/
private String reqHttpsModel;
/**
* 该值为空时不设置，不为空时设置
*/
private String sessionId;
/**
* 是否开启代理模式（默认FALSE）"TRUE":开启;"FALSE":不开启;设为TRUE时需要配置以下几项参数
*/
private String ifProxy;
/**
* 代理地址
*/
private String proxyAddress;
/**
* 代理端口
*/
private String proxyPort;
/**
* 代理账号
*/
private String proxyUser;
/**
* 代理密码
*/
private String proxyPassWord;
public RestParam() {
super();
}
...省略
}
代码下载地址： http://download.csdn.net/download/ardo_pass/9733899