在一些业务中我们可要调其他的接口(第三方的接口) 这样就用到我接下来用到的工具类。
用这个类需要引一下jar包的坐标
<dependency><groupId>org.jsoup</groupId><artifactId>jsoup</artifactId><version>1.11.3</version></dependency>
引好坐标后就可以使用这个工具类了;
Connection.Response post = HttpUtils.post("http://localhost:10090/Controller/httpToJson",str);
String body = post.body();
System.out.println("响应报文:"+body);
str代表你需要传的参数 一般是json类型的数据
访问成功后一般会返回你一个json的数据,但是这个数据有一些问题,它会进行转译。我把这个字符串进行了一些处理。
{"result":"{\"FoodID\":\"A66J54DW9IKJ75U3\",\"FoodName\":\"桃子\",\"FoodBrand\":\"龙冠\",\"FoodPlace\":\"吉林\",\"FoodText\":\"四打击我家的娃哦哦囧\",\"FoodImg\":\"sdasdasdasd\",\"FoodProInfo\":[{\"ProjectName\":\"浇水\",\"UserName\":\"周锐\",\"OperationDescribe\":\"给桃子树浇水茁壮成长\",\"ImgUrl\":\"asdlpalplpd23\",\"OperationTm\":\"20200616103856\"}],\"FoodPackInfo\":null,\"FoodDetectionInfo\":null,\"FoodLogInfo\":null}","code":0,"message":"查询智能合约成功"}
对这个串进行替换等一些操作,然后把它转成json对象。通过json工具类把它自动封装到实体类型中,
(在进行封装实体的时候一定要注意,json串的属性和实体的属性要完全相同)否则会报错的(避免入坑)
Connection.Response post = HttpUtils.post("http://localhost:10090/fabricController/queryChaincode",str);String body = post.body();String replace = body.replace("\\\"", "\"");String replace1 = replace.replace(":\"{", ":{");String replace2 = replace1.replace("}\",", "},");String replace3 = replace2.replace("{\"result\":", "");String replace4 = replace3.replace(",\"code\":0,\"message\":\"查询智能合约成功\"}", ""); com.alibaba.fastjson.JSONObject jsonObject = com.alibaba.fastjson.JSONObject.parseObject(replace4);FoodAllInfo foodAllInfo = JSON.parseObject(replace4, FoodAllInfo.class);
package com.gblfy.order.utils;import org.jsoup.Connection;
import org.jsoup.Connection.Response;
import org.jsoup.Jsoup;import javax.net.ssl.*;
import java.io.*;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;public class HttpUtils {/*** 请求超时时间*/private static final int TIME_OUT = 120000;/*** Https请求*/private static final String HTTPS = "https";/*** 发送Get请求** @param url 请求URL* @return 服务器响应对象* @throws IOException*/public static Response get(String url) throws IOException {return get(url, null);}/*** 发送Get请求** @param url 请求URL* @param headers 请求头参数* @return 服务器响应对象* @throws IOException*/public static Response get(String url, Map<String, String> headers) throws IOException {if (null == url || url.isEmpty()) {throw new RuntimeException("The request URL is blank.");}// 如果是Https请求if (url.startsWith(HTTPS)) {getTrust();}Connection connection = Jsoup.connect(url);connection.method(Connection.Method.GET);connection.timeout(TIME_OUT);connection.ignoreHttpErrors(true);connection.ignoreContentType(true);if (null != headers) {connection.headers(headers);}Response response = connection.execute();return response;}/*** 发送JSON格式参数POST请求** @param url 请求路径* @param params JSON格式请求参数* @return 服务器响应对象* @throws IOException*/public static Response post(String url, String params) throws IOException {return doPostRequest(url, null, null, null, params);}/*** 发送JSON格式参数POST请求** @param url 请求路径* @param headers 请求头中设置的参数* @param params JSON格式请求参数* @return 服务器响应对象* @throws IOException*/public static Response post(String url, Map<String, String> headers, Map<String, String> params,String flag) throws IOException {return doPostRequest(url,headers,params,null,null);}/*** 字符串参数post请求** @param url 请求URL地址* @param paramMap 请求字符串参数集合* @return 服务器响应对象* @throws IOException*/public static Response post(String url, Map<String, String> headers) throws IOException {return doPostRequest(url, headers, null, null, null);}/*** 带上传文件的post请求** @param url 请求URL地址* @param paramMap 请求字符串参数集合* @param fileMap 请求文件参数集合* @return 服务器响应对象* @throws IOException*/public static Response post(String url, Map<String, String> paramMap, Map<String, File> fileMap)throws IOException {return doPostRequest(url, null, paramMap, fileMap, null);}/*** 执行post请求** @param url 请求URL地址* @param paramMap 请求字符串参数集合* @param fileMap 请求文件参数集合* @return 服务器响应对象* @throws IOException*/private static Response doPostRequest(String url, Map<String, String> headers, Map<String, String> paramMap,Map<String, File> fileMap, String jsonParams) throws IOException {if (null == url || url.isEmpty()) {throw new RuntimeException("The request URL is blank.");}// 如果是Https请求if (url.startsWith(HTTPS)) {getTrust();}Connection connection = Jsoup.connect(url);connection.method(Connection.Method.POST);connection.timeout(TIME_OUT);connection.ignoreHttpErrors(true);connection.ignoreContentType(true);if (null != headers) {connection.headers(headers);}// 收集上传文件输入流,最终全部关闭List<InputStream> inputStreamList = null;try {// 添加文件参数if (null != fileMap && !fileMap.isEmpty()) {inputStreamList = new ArrayList<InputStream>();InputStream in = null;File file = null;Set<Entry<String, File>> set = fileMap.entrySet();for (Entry<String, File> e : set) {file = e.getValue();in = new FileInputStream(file);inputStreamList.add(in);connection.data(e.getKey(), file.getName(), in);}}// 设置请求体为JSON格式内容else if (null != jsonParams && !jsonParams.isEmpty()) {connection.header("Content-Type", "application/json;charset=UTF-8");connection.requestBody(jsonParams);}// 普通表单提交方式else {connection.header("Content-Type", "application/x-www-form-urlencoded");}// 添加字符串类参数if (null != paramMap && !paramMap.isEmpty()) {connection.data(paramMap);}Response response = connection.execute();return response;} catch (FileNotFoundException e) {throw e;} catch (IOException e) {throw e;}// 关闭上传文件的输入流finally {if (null != inputStreamList) {for (InputStream in : inputStreamList) {try {in.close();} catch (IOException e) {e.printStackTrace();}}}}}/*** 获取服务器信任*/private static void getTrust() {try {HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {@Overridepublic boolean verify(String hostname, SSLSession session) {return true;}});SSLContext context = SSLContext.getInstance("TLS");context.init(null, new X509TrustManager[] { new X509TrustManager() {@Overridepublic void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {}@Overridepublic void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {}@Overridepublic X509Certificate[] getAcceptedIssuers() {return new X509Certificate[0];}} }, new SecureRandom());HttpsURLConnection.setDefaultSSLSocketFactory(context.getSocketFactory());} catch (Exception e) {e.printStackTrace();}}
}