需要调用http接口的代码继承FundHttpTemplate类，重写getParamData方法，在getParamDate里写调用逻辑。
模板：
package com.crb.ocms.fund.domain.util.http; import com.alibaba.fastjson.JSONArray; import com.crb.ocms.fund.domain.util.HttpUtil; import com.ibm.sc.osp.base.core.util.StringUtils; import lombok.extern.slf4j.Slf4j; import java.lang.reflect.ParameterizedType; import java.util.HashMap; import java.util.List; import java.util.Map; /** * @Project crb-fund * @PackageName com.crb.ocms.product.service * @ClassName FundHttpTemplate * @Author kc * @Date 2019/4/4 10:50 * @Description 走http的公共继承模板方法，第一个泛型为请求的参数类型，第二个参数为返回的参数类型 */ @Slf4j public abstract class FundHttpTemplate<T,K> { /** * 地址请求 * @return 请求地址 */ protected abstract String linkHttp(); /** * 得到响应数据 * @param t * @return */ public List<K> getData(T t) { Map<String, String> request_map = new HashMap<>(1); request_map.put("Content-Type", "application/json"); String url = linkHttp(); //封装请求参数 String params = getParamsData(t); String dataObj = HttpUtil.sendPost(url, params, request_map); if (StringUtils.isNotEmpty(dataObj)) { try { Class <K> entityClass = (Class <K>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[1]; List<K> ts = (List<K>) JSONArray.parseArray(dataObj, entityClass); return ts; } catch (Exception e) { e.printStackTrace(); log.error("获取数据异常原始数据：{}",dataObj); return null; } } else { log.error("获取数据异常"); return null; } } /** * 构造参数 * @param t * @return */ protected abstract String getParamsData(T t); }
httpUtil:
package com.crb.ocms.fund.domain.util; import org.apache.http.HttpEntity; import org.apache.http.NameValuePair; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.client.methods.HttpRequestBase; import org.apache.http.client.utils.URIBuilder; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.impl.conn.PoolingHttpClientConnectionManager; import org.apache.http.message.BasicNameValuePair; import org.apache.http.util.EntityUtils; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Component; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.net.URISyntaxException; import java.util.ArrayList; import java.util.Map; /** * @Project crb-cost-domain * @PackageName com.crb.ocms.cost.cost.util * @ClassName HttpUtil * @Author kc * @Date 2019/2/21 13:39 * @Description http请求工具类 */ @Component public class HttpUtil { private static PoolingHttpClientConnectionManager cm; private static String EMPTY_STR = ""; private static String UTF_8 = "UTF-8"; private static Integer maxTotal; private static Integer maxPerRoute; @Value("${httpconfig.maxTotal}") public void setMaxTota(Integer maxTotal) { HttpUtil.maxTotal = maxTotal; } @Value("${httpconfig.maxPerRoute}") public void setMaxPerRoute(Integer maxPerRoute) { HttpUtil.maxPerRoute = maxPerRoute; } private static void init() { if (cm == null) { cm = new PoolingHttpClientConnectionManager(); // 整个连接池最大连接数 cm.setMaxTotal(maxTotal); // 每路由最大连接数，默认值是2 cm.setDefaultMaxPerRoute(maxPerRoute); } } /** * 通过连接池获取HttpClient * * @return */ private static CloseableHttpClient getHttpClient() { init(); return HttpClients.custom().setConnectionManager(cm).build(); } /** * @param url * @return */ public static String sendGet(String url) { HttpGet httpGet = new HttpGet(url); return getResult(httpGet); } /** * get请求 带参数 * @param url * @param params * @return * @throws URISyntaxException */ public static String sendGet(String url, Map<String, String> params) { URIBuilder ub = new URIBuilder(); ub.setPath(url); ArrayList<NameValuePair> pairs = covertParams2NVPS(params); ub.setParameters(pairs); HttpGet httpGet = null; try { httpGet = new HttpGet(ub.build()); } catch (URISyntaxException e) { e.printStackTrace(); } return getResult(httpGet); } /** * get请求 带参数带header * @param url * @param headers * @param params * @return * @throws URISyntaxException */ public static String sendGet(String url, Map<String, String> headers, Map<String, String> params) { URIBuilder ub = new URIBuilder(); ub.setPath(url); ArrayList<NameValuePair> pairs = covertParams2NVPS(params); ub.setParameters(pairs); HttpGet httpGet = null; try { httpGet = new HttpGet(ub.build()); } catch (URISyntaxException e) { e.printStackTrace(); } for (Map.Entry<String, String> param : headers.entrySet()) { httpGet.addHeader(param.getKey(), String.valueOf(param.getValue())); } return getResult(httpGet); } /** * post基本请求 * @param url * @return */ public static String sendPost(String url) { HttpPost httpPost = new HttpPost(url); return getResult(httpPost); } /** * post请求 str参数 * @param url * @param param * @return */ public static String sendPost(String url,String param) { HttpPost httpPost = new HttpPost(url); //解决中文乱码问题 StringEntity entity = new StringEntity(param,"utf-8"); entity.setContentEncoding("UTF-8"); entity.setContentType("application/json"); httpPost.setEntity(entity); return getResult(httpPost); } /** * post请求 带参数 * @param url * @param params * @return * @throws UnsupportedEncodingException */ public static String sendPost(String url, Map<String, String> params) { HttpPost httpPost = new HttpPost(url); ArrayList<NameValuePair> pairs = covertParams2NVPS(params); try { httpPost.setEntity(new UrlEncodedFormEntity(pairs, UTF_8)); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return getResult(httpPost); } /** * post请求 带参数 * @param url * @param param * @param headers * @return * @throws UnsupportedEncodingException */ public static String sendPost(String url,String param, Map<String, String> headers) { HttpPost httpPost = new HttpPost(url); //解决中文乱码问题 StringEntity entity = new StringEntity(param,"utf-8"); entity.setContentEncoding("UTF-8"); entity.setContentType("application/json"); httpPost.setEntity(entity); for (Map.Entry<String, String> head : headers.entrySet()) { httpPost.addHeader(head.getKey(), head.getValue()); } return getResult(httpPost); } /** * post请求 带header 带参数 * @param url * @param headers * @param params * @return * @throws UnsupportedEncodingException */ public static String sendPost(String url, Map<String, String> headers, Map<String, String> params) throws UnsupportedEncodingException { HttpPost httpPost = new HttpPost(url); for (Map.Entry<String, String> param : headers.entrySet()) { httpPost.addHeader(param.getKey(), String.valueOf(param.getValue())); } ArrayList<NameValuePair> pairs = covertParams2NVPS(params); httpPost.setEntity(new UrlEncodedFormEntity(pairs, UTF_8)); return getResult(httpPost); } /** * 参数封装 * @param params * @return */ private static ArrayList<NameValuePair> covertParams2NVPS(Map<String, String> params) { ArrayList<NameValuePair> pairs = new ArrayList<NameValuePair>(); for (Map.Entry<String, String> param : params.entrySet()) { pairs.add(new BasicNameValuePair(param.getKey(), param.getValue())); } return pairs; } /** * 处理Http请求结果 * @param request * @return */ private static String getResult(HttpRequestBase request) { CloseableHttpClient httpClient = getHttpClient(); try { CloseableHttpResponse response = httpClient.execute(request); HttpEntity entity = response.getEntity(); if (entity != null) { String result = EntityUtils.toString(entity,"UTF-8"); response.close(); return result; } } catch (IOException e) { e.printStackTrace(); } return EMPTY_STR; } }
实现类：
package com.crb.ocms.fund.domain.util.http; import com.alibaba.fastjson.JSONObject; import com.crb.ocms.fund.domain.po.PackingDepositAccount; import com.crb.ocms.fund.domain.util.http.FundHttpTemplate; import com.crb.ocms.fund.domain.vo.req.IcPackingDepositAccountQueryVo; import org.springframework.beans.factory.annotation.Value; import org.springframework.stereotype.Component; /** * @Project ocms * @PackageName com.crb.ocms.fund.api.config * @ClassName IcPackingAccountDepositForHttp * @Author * @Date 2019/4/8 0008 上午 11:08 * @Description */ @Component public class IcPackingAccountDepositForHttp extends FundHttpTemplate<IcPackingDepositAccountQueryVo,PackingDepositAccount> { @Value("${icPackingAccountDeposit.url}") private String icPackingAccountDepositUrl; @Override protected String linkHttp() { return icPackingAccountDepositUrl; } @Override protected String getParamsData(IcPackingDepositAccountQueryVo queryVo) { JSONObject param = new JSONObject(); //param.put("regionCode",queryVo.getRegionCode()); param.put("corporationId",queryVo.getCorporationId()); param.put("customerId",queryVo.getCustomerId()); return param.toJSONString(); } }
调用类：
List<PackingDepositAccount> packingDepositAccounts = icPackingAccountDepositForHttp.getData(depositAccountQueryVo); if(log.isDebugEnabled()){ log.debug("通过HTTP查询前端视图数据--代保管账户余额》》》》》》》{}",JSONObject.toJSONString(packingDepositAccounts)); }