java 调用url并获取返回的json数据

布满荆棘的人生 2022-04-01 04:46 780阅读 0赞

java代码：

public static String convert(String location) throws ClientProtocolException, IOException{
    		String url="https://restapi.amap.com/v3/assistant/coordinate/convert";
            CloseableHttpClient httpclient = HttpClientBuilder.create().build();
            String param1="locations="+location+"&coordsys=baidu&output=JSON&key=XXXXXXXXXXXXXXXXXXXXXXX";
    	    StringEntity stringEntity = new StringEntity(param1);  
    	    stringEntity.setContentType("application/x-www-form-urlencoded");  
            HttpPost httpPost = new HttpPost(url);
            httpPost.setEntity(stringEntity);
            JSONObject jsonResult = null;
            httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8");
            HttpResponse response = httpclient.execute(httpPost);
            String result = EntityUtils.toString(response.getEntity(), "utf-8");
            jsonResult = JSONObject.parseObject(result);
            if("1".equals(jsonResult.getString("status"))){
            	return jsonResult.getString("locations");
            }else{
            	return null;
            } 
        }

maven：

<dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.2.49</version>
                <scope>compile</scope>
            </dependency>
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpcore</artifactId>
                <version>4.4.7</version>
            </dependency>
            <dependency>
                <groupId>org.apache.httpcomponents</groupId>
                <artifactId>httpclient</artifactId>
                <version>4.5.6</version>
            </dependency>