Spring RestTemplate工具类

Spring 的RestTemplate是基于Httpclient的请求模式。

package com.wlyd.fmcgwms.util.api;

import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.web.client.RestTemplate;
/**
 * Spring RestTemplate工具类
 * 
 * @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 {
		/**
		 * 单例对象实例
		 */
		static final RestTemplate INSTANCE = new RestTemplate();
	}

	private RestTemplateUtils() {

	}
	
	/**
	 * 单例实例
	 */
	public static RestTemplate getInstance() {
		return SingletonRestTemplate.INSTANCE;
	}

	/**
	 * 
	 * 发送post请求
	 * 
	 * @param url
	 *            请求URL地址
	 * @param data
	 *            json数据
	 * @param token
	 *            RSA加密token【RSA({PlatformCode+TenantCode+DateTime.Now()})//平台代码
	 *            +会员/租户代码+当前时间，然后进行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);
	}
	
	/**
	 * 
	 * 发送post请求
	 * 
	 * @param url
	 *            请求URL地址
	 * @param data
	 *            json数据
	 * @param token
	 *            RSA加密token【RSA({PlatformCode+TenantCode+DateTime.Now()})//平台代码
	 *            +会员/租户代码+当前时间，然后进行RSA加密】
	 * @param platformCode
	 *            平台编码{平台分配}
	 * @param tenantCode
	 *            租户号{平台分配}
	 */
	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根据url获取对象
	 */
	public String get(String url) {
		return RestTemplateUtils.getInstance().getForObject(url, String.class,
				new Object[] {});
	}

	/**
	 * getById根据ID获取对象
	 */
	public String getById(String url, String id) {
		return RestTemplateUtils.getInstance().getForObject(url, String.class,
				id);
	}

	/**
	 * post提交对象
	 */
	public String post(String url, String data) {
		return RestTemplateUtils.getInstance().postForObject(url, null,
				String.class, data);
	}

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

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

}
           

注：本工具使用了单例模式。