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Rank: Starting Member
Groups: Registered
Joined: 10/26/2009
Posts: 1
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Hello to all, I have developed a application in which I have integrated paypal API While redireting to the paypal's sandbox account I get the following error Code:
java.lang.NullPointerException
at com.paypal.sdk.core.APICallerBase.getEndpointUrl(Unknown Source)
at com.paypal.sdk.core.nvp.NVPAPICaller.setupConnection(Unknown Source)
at com.paypal.sdk.services.NVPCallerServices.setAPIProfile(Unknown Sourc
e)
at com.nvp.codegenerator.ECSetExpressCheckout.ECSetExpressCheckoutCode(E
CSetExpressCheckout.java:48)
at org.dspace.app.webui.myServlet.myCheckOut.doGet(myCheckOut.java:22)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.jav
a:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ss(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:44
7)
at java.lang.Thread.run(Unknown Source)
I cannot understand what it is and how to come out of this?
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Rank: Junior Member
Groups: Registered
Joined: 10/15/2009
Posts: 159
Location: Omaha, NE USA
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Your code is referencing these: APICallerBase NVPAPICaller NVPCallerServices Probably creating objects using them: Example: NVPAPICaller MyNewCaller = new NVPAPICaller; but that class is not available in the directory, so It can't locate it, giving it a "Null Pointer Exception". I would suggest checking out the files in the SDK, and seeing which ones you left out that contain those Classes.
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Rank: Starting Member
Groups: Registered
Joined: 10/29/2009
Posts: 2
Location: Ahmedabad, Gujarat, India
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nds_webdesign wrote:Your code is referencing these:
APICallerBase
NVPAPICaller
NVPCallerServices
Probably creating objects using them: Example:
NVPAPICaller MyNewCaller = new NVPAPICaller;
but that class is not available in the directory, so It can't locate it, giving it a "Null Pointer Exception".
I would suggest checking out the files in the SDK, and seeing which ones you left out that contain those Classes.
Thanks for your reply. I have written my checkout code in the same directory hierarchy, while from my servlet when I call me setCheckOut code my servlet gets it, in which I have written the code Code:
NVPCallerServices caller = new NVPCallerServices();
//credential Settings
profile.setEnvironment("sandbox");
profile.setSubject("ABCD");
caller.setAPIProfile(profile);
the last line is Line no 48 in ECDoSetExpressCheckOut.java where the problem is found. Thanks
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Rank: Starting Member
Groups: Registered
Joined: 10/29/2009
Posts: 2
Location: Ahmedabad, Gujarat, India
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When I print the value of "profile" which is the object of APIProfile it does not prints null in my ECSetExpressCheckOut.java
Also I have traced that which file is missing but I found that all files are reachable from my class file.
I cant understand what is missing
Please Help me
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