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。