2
我正在MFP V8中開發適配器。下面是我的代碼來驗證用戶名和密碼:無法初始化導致NullPointerException的MobileFirst V8.0適配器中的AdaptersAPI對象
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import com.ibm.mfp.adapter.api.AdaptersAPI;
import com.ibm.mfp.adapter.api.ConfigurationAPI;
import com.ibm.mfp.security.checks.base.UserAuthenticationSecurityCheck;
import com.ibm.mfp.server.registration.external.model.AuthenticatedUser;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
@Api(value = "Sample Adapter Resource")
@Path("/resource")
public class UserValidationSecurityCheck extends UserAuthenticationSecurityCheck{
private String displayName;
private String errorMsg;
private HashMap<String,Object> adapterReponse = null;
@Context
AdaptersAPI adaptersAPI;
@Override
protected AuthenticatedUser createUser() {
return new AuthenticatedUser(displayName, displayName, this.getName(),adapterReponse);
}
@Override
protected boolean validateCredentials(Map<String, Object> credentials) {
if(credentials!=null && credentials.containsKey("username") && credentials.containsKey("password")){
if (credentials.get("username")!=null && credentials.get("password")!=null) {
String username = credentials.get("username").toString();
String password = credentials.get("password").toString();
if (username.equals(password)) {
JSONObject loginParams = new JSONObject();
loginParams.put("username", username);
loginParams.put("password", password);
HttpUriRequest httpUriRequest = adaptersAPI.createJavascriptAdapterRequest("LoginAndWeeklyCertAdapter1", "login", loginParams);
try {
HttpResponse httpResponse = adaptersAPI.executeAdapterRequest(httpUriRequest);
adapterReponse = adaptersAPI.getResponseAsJSON(httpResponse);
System.out.println(adapterReponse.toString());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return true;
} else {
errorMsg = "Wrong Credentials";
}
}
}
else{
errorMsg = "Credentials not set properly";
}
return false;
}
public boolean isLoggedIn(){
return getState().equals(STATE_SUCCESS);
}
public AuthenticatedUser getRegisteredUser() {
return registrationContext.getRegisteredUser();
}
@Override
protected Map<String, Object> createChallenge() {
Map<String, Object> challenge = new HashMap<String, Object>();
challenge.put("errorMsg", errorMsg);
challenge.put("remainingAttempts", getRemainingAttempts());
return challenge;
}
@ApiOperation(value = "Returns 'Hello from resource'", notes = "A basic example of a resource returning a constant string.")
@ApiResponses(value = { @ApiResponse(code = 200, message = "Hello message returned") })
@GET
@Produces(MediaType.TEXT_PLAIN)
public String getResourceData() {
// log message to server log
logger.info("Logging info message...");
return "Hello from resource";
}
}
當我提出挑戰的答案,我在下面的行獲得NullPointerException異常:
HttpUriRequest httpUriRequest = adaptersAPI.createJavascriptAdapterRequest("LoginAndWeeklyCertAdapter1", "login");
因爲adaptersAPI
爲空。爲了完成這項工作,我必須做任何額外的配置嗎?我如何初始化AdaptersAPI
對象?
注意:登錄方法和安全檢查都在同一個適配器中。
更新
我調查了更多的時間在它和代碼更新到上面給出並觀察以下幾點:
當validateCredentials()
是越來越提交質詢響應然後我叫後在AdapterAPI對象中獲得null
值。
2.因爲,當我使用mobilefirst swagger工具調用getResourceData()
時,我得到AdapterAPI的對象。
我有確切的問題,有沒有解決方案呢? –
請參閱下面的答案。 –