Spring RestTemplate工具類

Spring 的RestTemplate是基于Httpclient的請求模式。

package com.wlyd.fmcgwms.util.api;

import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.web.client.RestTemplate;
/**
 * Spring RestTemplate工具類
 * 
 * @packge com.wlyd.fmcgwms.util.api.RestTemplateUtils
 * @date 2016年6月13日 下午4:14:23
 * @author pengjunlin
 * @comment
 * @update
 */
public class RestTemplateUtils {

	private static class SingletonRestTemplate {
		/**
		 * 單例對象執行個體
		 */
		static final RestTemplate INSTANCE = new RestTemplate();
	}

	private RestTemplateUtils() {

	}
	
	/**
	 * 單例執行個體
	 */
	public static RestTemplate getInstance() {
		return SingletonRestTemplate.INSTANCE;
	}

	/**
	 * 
	 * 發送post請求
	 * 
	 * @param url
	 *            請求URL位址
	 * @param data
	 *            json資料
	 * @param token
	 *            RSA加密token【RSA({PlatformCode+TenantCode+DateTime.Now()})//平台代碼
	 *            +會員/租戶代碼+目前時間，然後進行RSA加密】
	 */
	public static String post(String url, String data, String token)
			throws Exception {
		HttpHeaders headers = new HttpHeaders();
		/*headers.add(HttpHeadersImpl.ACCEPT, "application/json");
		headers.add(HttpHeadersImpl.ACCEPT_ENCODING, "gzip");
		headers.add(HttpHeadersImpl.CONTENT_ENCODING, "UTF-8");
		headers.add(HttpHeadersImpl.CONTENT_TYPE,
				"application/json; charset=UTF-8");
		headers.add(HttpHeadersImpl.COOKIE, token);
		headers.add("Token", token);*/
		headers.add("Accept", "application/json");
		headers.add("Accpet-Encoding", "gzip");
		headers.add("Content-Encoding", "UTF-8");
		headers.add("Content-Type", "application/json; charset=UTF-8");
		headers.add("Token", token);

		HttpEntity<String> formEntity = new HttpEntity<String>(data, headers);
		return RestTemplateUtils.getInstance().postForObject(url, formEntity, String.class);
	}
	
	/**
	 * 
	 * 發送post請求
	 * 
	 * @param url
	 *            請求URL位址
	 * @param data
	 *            json資料
	 * @param token
	 *            RSA加密token【RSA({PlatformCode+TenantCode+DateTime.Now()})//平台代碼
	 *            +會員/租戶代碼+目前時間，然後進行RSA加密】
	 * @param platformCode
	 *            平台編碼{平台配置設定}
	 * @param tenantCode
	 *            租戶号{平台配置設定}
	 */
	public static String post(String url, String data, String token,String platformCode,String tenantCode)
			throws Exception {
		HttpHeaders headers = new HttpHeaders();
		/*headers.add(HttpHeadersImpl.ACCEPT, "application/json");
		headers.add(HttpHeadersImpl.ACCEPT_ENCODING, "gzip");
		headers.add(HttpHeadersImpl.CONTENT_ENCODING, "UTF-8");
		headers.add(HttpHeadersImpl.CONTENT_TYPE,
				"application/json; charset=UTF-8");
		headers.add(HttpHeadersImpl.COOKIE, token);
		headers.add("Token", token);*/
		headers.add("Accept", "application/json");
		headers.add("Accpet-Encoding", "gzip");
		headers.add("Content-Encoding", "UTF-8");
		headers.add("Content-Type", "application/json; charset=UTF-8");
		headers.add("Token", token);
		headers.add("PlatformCode", platformCode);
		headers.add("TenantCode", tenantCode);

		HttpEntity<String> formEntity = new HttpEntity<String>(data, headers);
		return RestTemplateUtils.getInstance().postForObject(url, formEntity, String.class);
	}
	
	/**
	 * get根據url擷取對象
	 */
	public String get(String url) {
		return RestTemplateUtils.getInstance().getForObject(url, String.class,
				new Object[] {});
	}

	/**
	 * getById根據ID擷取對象
	 */
	public String getById(String url, String id) {
		return RestTemplateUtils.getInstance().getForObject(url, String.class,
				id);
	}

	/**
	 * post送出對象
	 */
	public String post(String url, String data) {
		return RestTemplateUtils.getInstance().postForObject(url, null,
				String.class, data);
	}

	/**
	 * put修改對象
	 */
	public void put(String url, String data) {
		RestTemplateUtils.getInstance().put(url, null, data);
	}

	/**
	 * delete根據ID删除對象
	 */
	public void delete(String url, String id) {
		RestTemplateUtils.getInstance().delete(url, id);
	}
	
	public static void main(String[] args) {
		
	}

}
           

注：本工具使用了單例模式。