HttpClient和糊涂工具类调用其他http接口

本文经测试可用，直接创建工具类进行调用即可。

HttpClient案例：

引入依赖

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<dependency>      <groupId>com.alibaba</groupId>      <artifactId>fastjson</artifactId>      <version>1.2.68</version>  </dependency>  <dependency>      <groupId>org.apache.httpcomponents</groupId>      <artifactId>httpclient</artifactId>      <version>4.3.5</version>  </dependency>

工具类代码如下：

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import com.alibaba.fastjson.JSONObject; import org.apache.http.HttpResponse; import org.apache.http.client.config.RequestConfig; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils; import java.net.SocketTimeoutException; import java.nio.charset.Charset;   public class HttpClientUtils {        /**      * 发送HttpClient请求      */     public static String sendPost(String requestUrl,String requestParams) {         JSONObject jb = new JSONObject();         jb.put("code",0);         try {             CloseableHttpClient httpClient = HttpClients.createDefault();             RequestConfig requestConfig = RequestConfig.custom()                 .setSocketTimeout(300 * 1000)                 .setConnectTimeout(300 * 1000)                 .build();             HttpPost post = new HttpPost(requestUrl);             post.setConfig(requestConfig);             post.setHeader("Content-Type","application/json;charset=utf-8");             //传json字符串             StringEntity postingString = new StringEntity(requestParams,Charset.forName("UTF-8"));             post.setEntity(postingString);             HttpResponse response = httpClient.execute(post);             String content = EntityUtils.toString(response.getEntity());             System.out.println("接口返回内容为：" + content);             return content;         } catch (SocketTimeoutException e) {            System.out.println("调用接口超时,超时时间:" + 300+ "秒,url:" + requestUrl + ",参数：" + requestParams);             return jb.toString();         } catch (Exception e) {            System.out.println("调用接口失败,url:" + requestUrl + ",参数：" + requestParams);             return jb.toString();         }     } }

调用其他项目接口demo

本地项目调用工具类的sendPost方法并传入对应参数

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import com.alibaba.fastjson.JSON; import java.util.HashMap; import java.util.Map;   public class Test {     public static void main(String[] args) {         String requestUrl = "http://localhost:8889/testClient";         Map<String,Object> map1=new HashMap<>();         map1.put("name","信梧");         map1.put("age",1);         String jsonStr=JSON.toJSONString(map1);         HttpClientUtils.sendPost(requestUrl,jsonStr );     } }

远程项目接口代码

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@ResponseBody    @RequestMapping(value = "/testClient", method = RequestMethod.POST)    public String map2xml(@RequestBody String json) {        System.out.println("接口被调用...");        System.out.println("接收数据为："+json);        HashMap<Object, Object> map = new HashMap<>();        map.put("userName", "张三");        map.put("age", 10);        map.put("weight", "60kg");        return  map.toString();    }

启动远程项目后，启动本地项目Test类，结果如下：

本地项目

 远程项目

注意：使用post请求需要指定参数name然后赋value，远程项目接收参数用@RequestBody注解 并且接收参数和传递参数时参数类型相同即可，参数名不一样不影响。

糊涂工具类（hutool）post请求设置body参数为json数据

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String deviceUrl = "https://cloud.shdjq.cn/cdb/pc/devlist?_t=" + ts;        Map<String, Object> proMap = new HashMap<>();        proMap.put("id", 123);        String deviceInfo = HttpUtil.createPost(deviceUrl).header("tokenId", tokenId)                .contentType("application/json")                .body(JSON.toJSONString(proMap)).execute().body();        JSONObject jsonObject = JSON.parseObject(deviceInfo);        String devResult = jsonObject.get("result").toString();        String devs = JSON.parseObject(devResult).get("devs").toString();        JSONArray jsonArray = JSONArray.parseArray(devs);