init the param of schemaRetrievalUrl;

source/gateway/src/main/java/com/jd/blockchain/gateway/GatewayServerBooter.java

@@ -129,6 +129,7 @@ public class GatewayServerBooter {
 		ConsoleUtils.info("\r\n\r\nStart connecting to peer ....");
 		BlockBrowserController blockBrowserController = appCtx.getBean(BlockBrowserController.class);
 		blockBrowserController.setDataRetrievalUrl(config.dataRetrievalUrl());
+		blockBrowserController.setSchemaRetrievalUrl(config.getSchemaRetrievalUrl());
 		PeerConnector peerConnector = appCtx.getBean(PeerConnector.class);
 		peerConnector.connect(config.masterPeerAddress(), defaultKeyPair, config.providerConfig().getProviders());
 		ConsoleUtils.info("Peer[%s] is connected success!", config.masterPeerAddress().toString());

source/gateway/src/main/java/com/jd/blockchain/gateway/web/BlockBrowserController.java

@@ -56,6 +56,7 @@ public class BlockBrowserController implements BlockchainExtendQueryService {
 	private DataRetrievalService dataRetrievalService;
 
 	private String dataRetrievalUrl;
+	private String schemaRetrievalUrl;
 
 	private static final long BLOCK_MAX_DISPLAY = 3L;
 
@@ -511,6 +512,37 @@ public class BlockBrowserController implements BlockchainExtendQueryService {
 		return result;
 	}
 
+	/**
+	 * querysql;
+	 * @param request
+	 * @return
+	 */
+	@RequestMapping(method = RequestMethod.POST, value = "schema/querysql")
+	public Object queryBySql(HttpServletRequest request,@RequestBody String queryString) {
+		String result;
+		if (schemaRetrievalUrl == null ||  schemaRetrievalUrl.length() <= 0) {
+			result = "{'message':'OK','data':'" + "schema.retrieval.url is empty" + "'}";
+		} else {
+			String queryParams = request.getQueryString() == null ? "": request.getQueryString();
+			String fullQueryUrl = new StringBuffer(schemaRetrievalUrl)
+					.append(request.getRequestURI())
+					.append(BaseConstant.DELIMETER_QUESTION)
+					.append(queryParams)
+					.toString();
+			try {
+				result = dataRetrievalService.retrievalPost(fullQueryUrl,queryString);
+				ConsoleUtils.info("request = {%s} \r\n result = {%s} \r\n", fullQueryUrl, result);
+			} catch (Exception e) {
+				result = "{'message':'error','data':'" + e.getMessage() + "'}";
+			}
+		}
+		return result;
+	}
+
+	public void setSchemaRetrievalUrl(String schemaRetrievalUrl) {
+		this.schemaRetrievalUrl = schemaRetrievalUrl;
+	}
+
 	public void setDataRetrievalUrl(String dataRetrievalUrl) {
 		this.dataRetrievalUrl = dataRetrievalUrl;
 	}