Java 为单元测试创建对象 MockHttpServletResponse 时出错
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Error creating object MockHttpServletResponse for unit testing
提问by gyanu
I was trying to write unit test for Servlet using sprint-test using mock object
my maven dependency is:
<dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>4.0.3.RELEASE</version> </dependency>
我试图使用模拟对象使用 sprint-test 为 Servlet 编写单元测试
我的Maven依赖是：
<dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>4.0.3.RELEASE</version> </dependency>
I want to test just java servlet like below following book PRACTICAL TDD AND ACCEPTANCE TDD FOR JAVA DEVELOPER:
我想只测试 Java servlet，如下面的书PRACTICAL TDD AND ACCEPTANCE TDD FOR JAVA DEVELOPER：
package sample;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LoginServlet extends HttpServlet {
private boolean isValid;
/**
*
*/
private static final long serialVersionUID = 2473252741884321641L;
@Override
public void init() throws ServletException {
super.init();
}
@Override
public void doPost(HttpServletRequest req, HttpServletResponse resp)
throws IOException {
String user = req.getParameter("j_username");
String pass = req.getParameter("j_password");
if (isValidLogin(user, pass)) {
resp.sendRedirect("/frontpage");
req.getSession().setAttribute("username", user);
} else {
resp.sendRedirect("/invalidlogin");
}
}
private boolean isValidLogin(String user, String pass) {
return isValid;
}
public void setValid(boolean isValid) {
this.isValid = isValid;
}
}
My code is:
我的代码是：
package sample;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.mock.web.MockHttpServletResponse;
public class SprintTestProb {
@Test
public void wrongPasswordShouldRedirectToErrorPage() throws Exception {
MockHttpServletRequest request = new MockHttpServletRequest();
MockHttpServletResponse response = new MockHttpServletResponse();
request.addParameter("j_username", "gyanu");
request.addParameter("j_password", "wrongpassword");
LoginServlet login = new LoginServlet();
login.setValid(false);
login.doPost(request, response);
assertEquals("/invalidlogin", response.getRedirectedUrl());
}
}
I got error on line MockHttpServletResponse response = new MockHttpServletResponse();as follows:
我在线上出现错误MockHttpServletResponse response = new MockHttpServletResponse(); 如下：
java.lang.ExceptionInInitializerError
at org.springframework.mock.web.MockHttpServletResponse.<init>(MockHttpServletResponse.java:76)
at sample.SprintTestProb.wrongPasswordShouldRedirectToErrorPage(SprintTestProb.java:14)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
0(ParentRunner.java:53)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
Caused by: java.util.MissingResourceException: Can't find bundle for base name javax.servlet.LocalStrings, locale en_US
at java.util.ResourceBundle.throwMissingResourceException(ResourceBundle.java:1499)
at java.util.ResourceBundle.getBundleImpl(ResourceBundle.java:1322)
at java.util.ResourceBundle.getBundle(ResourceBundle.java:721)
at javax.servlet.ServletOutputStream.<clinit>(ServletOutputStream.java:87)
... 25 more
采纳答案by gyanu
I need to replace dependency for javaee-api with javax.selvlet-api as below:
我需要用 javax.selvlet-api 替换 javaee-api 的依赖关系，如下所示：
@WebAppConfiguration
@ContextConfiguration
public class WacTests {
@Autowired WebApplicationContext wac; // cached
@Autowired MockServletContext servletContext; // cached
@Autowired MockHttpSession session;
@Autowired MockHttpServletRequest request;
@Autowired MockHttpServletResponse response;
@Autowired ServletWebRequest webRequest;
//...
}
回答by Shiraaz.M
According to the Spring Framework Reference for Testingyou should be using annotations to autowire your mocks. The example in the spring reference:
根据Spring Framework Reference for Testing，您应该使用注释来自动装配您的模拟。spring参考中的例子：
`
`
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>servlet-api-2.5</artifactId>
<version>6.1.11</version>
</dependency>
`
`
A different example (without annotations) can be found here
一个不同的例子（没有注释）可以在这里找到
回答by sina
I had a similar issue and solved it by adding this dependency to my pom and there is no need to change your javaee-api to javax.servlet
我有一个类似的问题，并通过将此依赖项添加到我的 pom 中解决了它，并且无需将您的 javaee-api 更改为 javax.servlet
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