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問題描述
我正在嘗試在我的一個(gè) servlet 中執(zhí)行一些 jUnit 測試，但每當(dāng)我嘗試運(yùn)行它時(shí)，我都會(huì)獲得 ExceptionInInitializerError.我讀過這個(gè)錯(cuò)誤是由于一個(gè)異常，在評(píng)估靜態(tài)初始化程序或靜態(tài)變量的初始化程序期間發(fā)生的.問題是，即使我試圖修復(fù)它，我也可以.這就是我在這里寫的原因:我的 servlet 代碼如下:
I am trying to perform some jUnit test in one of my servlets but whenever I try to run it I obtain a ExceptionInInitializerError. I've read that this error is due to an exception, occurred during evaluation of a static initializer or the initializer for a static variable. The thing is that even though I tried to fix it I can. That's why I am writing here: my servlet code is the following:
public class AppServlet extends HttpServlet {
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
//obtenemos los valores de los campos del formulario.
String usr = request.getParameter("usrName");
String cp = request.getParameter("codigoPostal");
Gson gson = new Gson();
if (usr == null || cp == null || cp.length() != 5) {
Result r = new Result("KO", "No se introdujeron bien los datos");
String jsonString = gson.toJson(r);
out.println(jsonString);
return;
}
//procedemos a convertir el codigo postal en la ciudad usando geonames:
//para ello usaremos la api de geonames
String city = geoLocalize.localizeCity(cp);
//empezaremos con el codigo de depuración para ver donde podemos tener errores
if (city == null) {
Result r = new Result("KO", "No hay ciudad para dicho codigo postal");
String jsonString = gson.toJson(r);
out.println(jsonString);
return;
}
//comenzamos con las bases de datos
SQLconnection db = new SQLconnection();
//una vez creada la conexion deberemos hacer las insert en las tablas.
if (!db.checkUsr(usr)) {
if (db.insertUsr(usr)) {
int numCp = parseInt(cp);
if (!db.checkCP(numCp)) {
if (db.addCity(numCp, city)) {
Result r = new Result("OK", "Proceso terminado sin problemas");
String jsonString = gson.toJson(r);
out.println(jsonString);
return;
} else {
Result r = new Result("KO", "No se ha podido a?adir la ciudad");
String jsonString = gson.toJson(r);
out.println(jsonString);
return;
}
} else {
Result r = new Result("OK", "Se ha a?adido el usuario, el codigo postal ya estaba");
String jsonString = gson.toJson(r);
out.println(jsonString);
return;
}
} else {
Result r = new Result("KO", "No se ha podido a?adir el usuario");
String jsonString = gson.toJson(r);
out.println(jsonString);
return;
}
} else {
Result r = new Result("KO", "El usuario ya existe en el sistema");
String jsonString = gson.toJson(r);
out.println(jsonString);
return;
}
} catch (IOException | NumberFormatException ex) {
Logger.getLogger(AppServlet.class.getName()).log(Level.SEVERE, null, ex);
} catch (Exception ex) {
Logger.getLogger(AppServlet.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
而我的 jUnit 測試代碼如下:
And my jUnit test code is the following:
public class AppServletTest extends TestCase {
HttpServletRequest request;
HttpServletResponse response;
AppServlet instance;
public AppServletTest(String testName) {
super(testName);
}
@Override
protected void setUp() throws Exception {
request = mock(HttpServletRequest.class);
response = mock(HttpServletResponse.class);
instance = new AppServlet();
super.setUp();
}
@Override
protected void tearDown() throws Exception {
super.tearDown();
}
/**
* Test of doGet method, of class AppServlet.
*
* @throws java.lang.Exception
*/
public void testDoGet() throws Exception {
System.out.println("doGet");
//generamos los parametros y un .txt donde guardaremos la respuesta JSON
when(request.getParameter("usrName")).thenReturn("Javi");
when(request.getParameter("codigoPostal")).thenReturn("48991");
PrintWriter writer = new PrintWriter("resultadoPruebas.txt");
when(response.getWriter()).thenReturn(writer);
//mandamos la peticion al servlet
instance.doGet(request, response);
verify(request, atLeast(1)).getParameter("usrName"); // para verificar si se ha llamado a usrName
writer.flush(); // it may not have been flushed yet...
assertTrue(FileUtils.fileRead(new File("somefile.txt"), "UTF-8")
.contains("OK"));
}
}
這里是完整的堆棧跟蹤:
An here is the full stacktrace:
java.lang.ExceptionInInitializerError
at com.jbo.testapp.AppServletTest.setUp(AppServletTest.java:36)
at junit.framework.TestCase.runBare(TestCase.java:128)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:120)
at junit.framework.TestSuite.runTest(TestSuite.java:230)
at junit.framework.TestSuite.run(TestSuite.java:225)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.maven.surefire.junit.JUnitTestSet.execute(JUnitTestSet.java:96)
at org.apache.maven.surefire.junit.JUnit3Provider.executeTestSet(JUnit3Provider.java:117)
at org.apache.maven.surefire.junit.JUnit3Provider.invoke(JUnit3Provider.java:94)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110)
at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:175)
at
org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:107)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:68)
Caused by: java.util.MissingResourceException: Can't find bundle for base name javax.servlet.LocalStrings, locale es_ES
at java.util.ResourceBundle.throwMissingResourceException(ResourceBundle.java:1564)
at java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1387)
at java.util.ResourceBundle.getBundle(ResourceBundle.java:773)
at javax.servlet.GenericServlet.<clinit>(GenericServlet.java:95)
... 24 more
Caused by: java.util.MissingResourceException: Can't find bundle for base name javax.servlet.LocalStrings, locale es_ES
at java.util.ResourceBundle.throwMissingResourceException(ResourceBundle.java:1564)
at java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1387)
at java.util.ResourceBundle.getBundle(ResourceBundle.java:773)
at javax.servlet.GenericServlet.<clinit>(GenericServlet.java:95)
... 24 more
希望你們能幫助我！提前謝謝你
Hope you guys can help me! Thank you in advance
推薦答案
原因:java.util.MissingResourceException:找不到基本名稱 javax.servlet.LocalStrings 的包，語言環(huán)境 es_ES
Caused by: java.util.MissingResourceException: Can't find bundle for base name javax.servlet.LocalStrings, locale es_ES
這才是真正的錯(cuò)誤.
您正在運(yùn)行的測試缺少 servlet-api 依賴項(xiàng).
Your running tests are missing the servlet-api dependency.
如果您使用的是 maven，請確保此依賴項(xiàng)存在于您的項(xiàng)目中:
If you're using maven make sure this dependency is in your project:
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
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