java通过httpClient发送json格式数据请求(GET方式)

概述

在开发过程中和第三方系统对接时遇到需要使用GET请求传递JSON参数，现整理请求方式如下。

HttpGetWithEntity类

public class HttpGetWithEntity extends HttpEntityEnclosingRequestBase {
    public final static String METHOD_NAME = "GET";

    public HttpGetWithEntity() {
        super();
    }

    public HttpGetWithEntity(final URI uri) {
        super();
        setURI(uri);
    }
    
    public HttpGetWithEntity(final String uri) {
        super();
        setURI(URI.create(uri));
    }

    @Override
    public String getMethod() {
        return METHOD_NAME;
    }

}

工具类

/**
     * get 发送 json 参数
     * @param ropPath
     * @param path
     * @param sk
     * @param ak
     * @param date
     * @param jsonStr
     * @return
     */
    public static String GetOpenUrlJsonString(String ropPath, String path, String sk, String ak, String date,String jsonStr) {
        BufferedReader in = null;
        String result = null;

        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.append( "GET
" );
        stringBuilder.append( "application/json
" );
        stringBuilder.append( date + "
" );
        stringBuilder.append( path );
        String pathAndUrl = stringBuilder.toString();
        String Sig = HMACSHA1Utils.getHmacSHA1( sk, pathAndUrl, "HmacSHA1" );
        Base64.Encoder encoder = Base64.getEncoder();
        //编码
        String Signature = encoder.encodeToString( Sig.getBytes() );
        String Authorization = "ROP " + ak + ":" + Signature;

        try {
            org.apache.http.client.HttpClient httpclient  = new DefaultHttpClient();

            HttpGetWithEntity requestEntity = new HttpGetWithEntity(ropPath + path);
            requestEntity.setHeader("Content-Type", "application/json");
            requestEntity.setHeader( "User-Agent", "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Maxthon;)" );
            requestEntity.setHeader( "Date", date );
            requestEntity.setHeader( "Authorization", Authorization );



            if (!StringUtils.isEmpty(jsonStr)) {
                StringEntity se = new StringEntity(jsonStr);
                requestEntity.setEntity(se);
            }

            HttpResponse response = httpclient.execute(requestEntity);

            int STATUS_CODE = response.getStatusLine().getStatusCode();

            if (STATUS_CODE == HttpStatus.SC_OK) {
                HttpEntity entity = response.getEntity();
                if (entity != null) {
                    result = EntityUtils.toString(entity);
                    return result;
                }
                if (entity != null) {
                    entity.consumeContent();
                }
            } else {
                throw new ServiceException("调用失败");
            }
            httpclient.getConnectionManager().shutdown();
        } catch (Exception e) {

        }
        return null;

    }

调用：

String date = getGMTDate();
//3.7 获取资源的url
String getUrl = "/res/resources/url";
String jsonStr = "{"resourceId":""+resourceId+""}";

String resultDetail = HttpClientUtils.GetOpenUrlJsonString( xxUrl, getUrl, AccessKeySecret, AccessKey, date,jsonStr );