如何调用别人的接口或网络上的接口
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2024-01-10 09:46:58
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java工具类
import java.io.IOException;
import java.util.Map;
import org.apache.http.HttpEntity;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
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 com.google.gson.Gson;
public class HttpClientUtil {
private final static String CONTENT_TYPE_TEXT_JSON = "text/json";
public static String postRequest(String url, Map<String, Object> param) throws ClientProtocolException, IOException{
CloseableHttpClient client = HttpClients.createDefault();
HttpPost httpPost = new HttpPost(url);
httpPost.setHeader("Content-Type", "application/json;charset=UTF-8");
Gson gson = new Gson();
String parameter = gson.toJson(param);
StringEntity se = new StringEntity(parameter,"UTF-8");
se.setContentType(CONTENT_TYPE_TEXT_JSON);
httpPost.setEntity(se);
CloseableHttpResponse response = client.execute(httpPost);
HttpEntity entity = response.getEntity();
String result = EntityUtils.toString(entity, "UTF-8");
return result;
}
}
url要调用的接口
param要传入的参数(Map)类型
@RequestMapping(value="buy",produces = "text/plain;charset=utf-8")
@ResponseBody
public String buy(String name) throws Exception{
String url = "https://suggest.taobao.com/sug?code=utf-8&q="+name+"&callback=cb";
String result=HttpClientUtil.postRequest(url, new HashMap<String,Object>());
return result;
}
ps:还需要导入相应版本的包
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient-cache</artifactId>
<version>4.5.3</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpmime</artifactId>
<version>4.5.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.2.4</version>
</dependency>