add simple readme.md

README.md

@@ -0,0 +1,30 @@
+1. 通过HTTP协议用：
+直接拼接URL参考：https://public.internetapi.cn/docs/bdcontract/doc/ContractAPI.html#id69
+
+使用SDK参考test目录下的SmartContractHttpClientTest.java
+```java
+//当需要发起签名调用时，使用正确的privateKey和publicKey。
+SmartContractHttpClient client =
+                new SmartContractHttpClient(
+                        SM2KeyPair.fromJson(
+                                "{\"privateKey\":\"...\",\"publicKey\":\"...\"}"),
+                        IP,
+                        port);
+        System.out.println(client.executeContractAsString(contractID_or_contractName, operation,arg));
+```
+
+2.通过WebSocket调用
+使用SDK参考test目录下的SmartClientTest.java
+```java
+SmartContractClient client = new SmartContractClient("ws://ip:port/SCIDE/SCExecutor") ;
+//如果需要指定key，也可传入key参数。
+//SM2KeyPair key =    SM2KeyPair.fromJson("json格式的密钥对");
+//client = new SmartContractClient("...",key);
+client.waitForConnect();
+client.login();
+ContractRequest cr = new ContractRequest();
+cr.setContractID("xxx");
+cr.setAction("xxx");
+cr.setArg("xxx");
+JsonObject result = testClient.executeContractSync(cr);
+```

src/main/sdk/org/bdware/client/SmartContractClient.java

@@ -28,6 +28,7 @@ public class SmartContractClient extends SmartContractHandler {
     SM2KeyPair keyPair;
 
     public SmartContractClient(String uri) {
+
         this(uri, SM2Util.generateSM2KeyPair(null));
     }