您好，我尝试了一个应用程序，该应用程序用于使用 JPA 将我域中的前 100 个用户存储到表中。但它返回服务器错误。皮尔斯帮帮我。这是我试过的代码..
public class AppsProvisioning {
public String m[]=new String[1000];
public int a;
final EntityManager em = EMFService.get().createEntityManager();
//public static void main(String[] args)
public void calluser() throws AppsForYourDomainException, ServiceException,
{
try {
// Create a new Apps Provisioning service
UserService myService = new UserService("My Application");
myService.setUserCredentials("admin@xxxx.edu.in","xxxxxxxx");
// Get a list of all entries
URL metafeedUrl = new URL("https://www.google.com/a/feeds/domain/user/2.0/");
System.out.println("Getting user entries...\n");
UserFeed resultFeed = myService.getFeed(metafeedUrl, UserFeed.class);
List<UserEntry> entries = resultFeed.getEntries();
for(int i=0; i<entries.size(); i++) {
UserEntry entry = entries.get(i);
m[i]=entry.getTitle().getPlainText();
table greeting1 = new table(m[i]);
em.persist(greeting1);
System.out.println("\t" + entry.getTitle().getPlainText());
}
a=entries.size();
System.out.println("\nTotal Entries: "+entries.size());
}
catch(AuthenticationException e) {
e.printStackTrace();
}
catch(MalformedURLException e) {
e.printStackTrace();
}
catch(ServiceException e) {
e.printStackTrace();
}
catch(IOException e) {
e.printStackTrace();
}
finally
{
em.close();
}
}
}
我认为 em.close() 错误中的错误是：服务器错误服务器遇到错误，无法完成您的请求。问候沙伦