从Java

Question

Worklight版本6.2

部署适配器，服务器已启动。

我正在使用以下代码来调用SQL过程：

 DataAccessService service = WorklightBundles.getInstance().getDataAccessService();
ProcedureQName procedureQname = new ProcedureQName("EAttendanceSQLAdapter", "checkDomain");
String paramArray = "['"+userName+"']";
System.out.println("paramArray : "+ paramArray);
logger.info(">>>>>>>>>>>after procedureQname>>>>>>>>>>>>>>>>>>>>>");
InvocationResult result = service.invokeProcedure(procedureQname,paramArray);
com.ibm.json.java.JSONObject resultJsonObject = result.toJSON();

它扔我

  

显示java.lang.NullPointerException     在这一行“DataAccessService service = WorklightBundles.getInstance（）。getDataAccessService（）;”

请咨询。但是同一组代码在不同的项目中对我有用。

由于

Answer 1

有些东西不对IMO有以下几行......
String paramArray = "['"+userName+"']";

这是一个有效的例子：

import com.ibm.json.java.JSONObject;
import com.worklight.server.bundle.api.WorklightBundles;
import com.worklight.server.integration.api.DataAccessService;
import com.worklight.server.integration.api.InvocationResult;
import com.worklight.server.integration.api.ProcedureQName;

public void callProcedure() {
    DataAccessService service = WorklightBundles.getInstance().getDataAccessService();
    String paramArray = "['param1', 'param2', 'param3']";
    ProcedureQName procedureQName = new ProcedureQName("adapterName",
"procedureName");
    InvocationResult result = service.invokeProcedure(procedureQName,paramArray);
    JSONObject jsonObject = result.toJSON();
    String value = (String)jsonObject.get("key");
}