java lang classcastexception

Several common exceptions during Spring development (3): java. lang. classCastException: com. sun. proxy. $ Proxy4 cannot be cast to com.edu. aop. arithmeticCalculatorImpl at com.edu. aop. main. main (Main. java: 11 ), This exception was encountered during Spring case development. Paste the complete exception informati

When developing Android WebService, users generally use the WebService server when they accept the returned values. Soapobject = (soapobject) envelope. getresponse (); this is used to accept the returned value, but this method usually produces Java. lang. classcastexception: Org. ksoap2.serialization. soapprimitive. Based on my actual operations and help from

Classcastexception, literally, is a type conversion error, which is usually an error during forced type conversion. Next, analyze the causes of classcastexception, and provide a solution to this exception. How does this exception occur? Let's give a more vivid example. Animal indicates animals, dog indicates dogs, cat indicates cats, and animal subclasses. See the followingCode: Animal a1 = new dog ()

Java. lang. ClassCastException occurs during Spring aop testing. springexception The Code is as follows: public class UserTest { private static UserServiceImpl userService ; @BeforeClass public static void iniUserService(){ ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml") ; userSer

Error: Java. lang. classcastexception: $ proxy17 cannot be cast *. *. *. service. impl. deviceserviceat *. *. *. service. impl. deviceservicetest. testdeviceisonline (deviceservicetest. java: 436) at Sun. reflect. nativemethodaccessorimpl. invoke0 (native method) at Sun. reflect. nativemethodaccessorimpl. invoke (n

Java. lang. classcastexception: org.apache.struts.action.actionmessageorg.apache.struts.taglib.html. errorstag. dostarttag (errorstag. java: 215) Org. apache. JSP. login_jsp. _ jspx_meth_html_005ferrors_005f0 (login_jsp.java: 173) Org. apache. JSP. login_jsp. _ jspx_meth_html_005fform_005f0 (login_jsp.java: 115) Org. a

The code for getfreeconnection is as follows: Public connection getfreeconnection (){ // Return the conn class of the database connection to intercept the close method. Connection conn2 = NULL; If (conn instanceof connection ){ Conn2 = (connection) proxy. newproxyinstance (conn. getclass (). getclassloader (), conn. getclass (). getinterfaces (), this ); } Return conn2; } There is no problem with the database driver of mysqlv5. When using the database drivers of mysqlv6 and Oracle, the following

Problem description:The project runs on weblogic10. Every time I modify a classCodeWhen you access a page through the interceptor, an exception is reported:Java. Lang. classcastexception: COM. xxx cannot be cast to com. xxxThe logic is that the previously stored object obtained from httpsession is forcibly converted to the original COM. xxx type. Solution:This exception does not occur after you implement t

Java. lang. ClassCastException: android. widget. FrameLayout $ LayoutParams cannot be cast to android. widget. LinearLayout $ LayoutParams The parent control of FrameLayout is a LinearLayout control. The problem is that when LinearLayout allocates space for the Child control, the LayoutParams for retrieving FrameLayout must be LinearLayout. LayoutParams, rather

Error description: Today, when a session bean is called Using JSP, a "Java. Lang. classcastexception: $ proxy65" error occurs. Baidu has explained the following in Chinese: The default Web Loader of JBoss is false. According to the description in the configuration file, the purpose is to display multiple loaders, determine whether to use the JBoss Web Loader as a

Java. lang. ClassCastException: com. sun. proxy. $ Proxy * cannot be cast to *** solution, com. sun. proxy Clinical manifestations: Case: Define proxy class: @ Transactional @ Repositorypublic UserDaoImpl implements UserDao extends BaseDaoImpl {/* No interface is implemented */} Get proxy class: ApplicationContext ctx = new ClassPathXmlApplicationContext("applic

Java. Lang. classcastexceptionKeyword: classcastexception1. Problem: Java. Lang. classcastexceptionSolution: downward conversion or forced conversion. My problem is that an error is reported when an interface is manually generated for a class. Finally, I use eclipse to automatically generate. 2. Problem: One-to-least

The cause of this error is that it is not added to the manifest. xml file. Android: Name = "com. Athena. www. Common. myapplication" This sentence Make sure to write the name correctly. If a write error occurs Java. Lang. classnotfoundexception in Android:* **. *** In loader Dalvik. system. pathclassloader If the above error occurs, you can check whether the name is wrong in manifest. xml.

ClassCastException errors are often encountered in Java programming , and the classcastexception is a runtime exception that is thrown when the JVM detects a conversion incompatibility between two types. This type of error usually terminates the user request. This model attempts to provide you with some basic elements to understand and exclude the most common cau

Java. Lang. class cannot be cast to Java. Lang. Reflect. parameterizedtype Java. Lang. classcastexception --> JAVA.