增加用户中token分页查询

contract/opensource/opensource.sol

@@ -170,17 +170,15 @@ contract OpenSource {
     }
 
      // select single user balance by page
-    function selectUserBalance(string memory username, string memory token_name, int256 start, int256 page_num)
+    function selectUserBalanceByPage(string memory username, string memory token_name, int256 start, int256 page_num)
         public
         view
         returns (string[] memory, string[] memory, uint256[] memory, uint256)
     {
-        Table user_table = tableFactory.openTable(USER_TABLE);
-
-        Condition condition = user_table.newCondition();
+        Condition condition = tableFactory.openTable(USER_TABLE).newCondition();
         condition.EQ("token_name", token_name);
 
-        Entries entries = user_table.select(username, condition);
+        Entries entries = tableFactory.openTable(USER_TABLE).select(username, condition);
         if (start + page_num > entries.size()) {
                     page_num = entries.size() - start;
 
@@ -189,20 +187,17 @@ contract OpenSource {
                     }
         }
 
-        uint256 total_count = uint256(entries.size());
         string[] memory username_list = new string[](uint256(entries.size()));
         string[] memory token_name_list = new string[](uint256(entries.size()));
         uint256[] memory balance_list = new uint256[](uint256(entries.size()));
 
         for (int256 i = 0; i < entries.size(); ++i) {
-            Entry entry = entries.get(i);
-
-            username_list[uint256(i)] = entry.getString("user");
-            token_name_list[uint256(i)] = entry.getString("token_name");
-            balance_list[uint256(i)] = entry.getUInt("balance");
+            username_list[uint256(i)] = entries.get(i).getString("user");
+            token_name_list[uint256(i)] = entries.get(i).getString("token_name");
+            balance_list[uint256(i)] = entries.get(i).getUInt("balance");
         }
 
-        return (username_list, token_name_list, balance_list, total_count);
+        return (username_list, token_name_list, balance_list, uint256(entries.size()));
     }
 
     // add user balance

readme.md

@@ -19,3 +19,15 @@
 
 ## 3. 测试合约部署情况
 使用postman，get请求合约地址（例如：http://8.130.51.51:3023/），正常情况下返回"hello world"
+
+## solidity 修改合约接口
+
+- 生成abi文件：
+./tools/solc-0.4.25 --abi contract/opensource/opensource.sol
+
+- 生成bin文件：
+  ./tools/solc-0.4.25 --bin contract/opensource/opensource.sol
+- 
+- 生成go文件：
+  ./tools/abigen --bin=./contract/opensource/opensource.bin --abi=./contract/opensource/opensource.abi --pkg=opensource --out=OpenSource.go
+