JUint4测试报错 No thread-bound request found: Are you referring to

听取了论坛老哥的建议：把所有测试功能都自动化起来。所以现在接着练习JUnit4。

今天测试登录功能，核心代码如下：

    @Autowired
    UserMapper userMapper;
    @Autowired
    HttpServletRequest request;

    /**
     * 用户登录操作。将用户存入session
     *
     * @param userName 用户名称
     * @param pwd      用户密码
     * @return
     */
    @Override
    public User login(String userName, String pwd) {
        HttpSession session = request.getSession();
        //MD5 加密后再与数据库中的密码进行比对
        pwd = MD5Util.md5Pwd(pwd);
        // 通过userName和pwd得到数据库中对应的记录,
        User user = userMapper.login(userName, pwd);
        if (user != null) {
            user.setPwd(null);
            // 得到user对象， 存入Session中
            session.setAttribute("user", user);
        }
        return user;
    }

然后写了一个JUnit测试


import cn.edu.zzuli.BlogApplication;
import cn.edu.zzuli.bean.User;
import cn.edu.zzuli.util.Msg;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import org.springframework.test.context.web.WebAppConfiguration;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

@RunWith(SpringRunner.class)
@SpringBootTest(classes = BlogApplication.class,webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
public class LoginControllerTest {

    @Autowired
    LoginController loginController;
    @Autowired
    HttpServletRequest request;
    @Test
    public void login() {
        Msg msg = (Msg) loginController.login("001001", "123456");
        System.out.println(msg);
        HttpSession session = request.getSession();
        User user = (User) session.getAttribute("user");
        System.out.println(user);
    }

}

然后报错：

java.lang.IllegalStateException: No thread-bound request found: Are you referring to request attributes outside of an actual web request, or processing a request outside of the originally receiving thread? If you are actually operating within a web request and still receive this message, your code is probably running outside of DispatcherServlet/DispatcherPortlet: In this case, use RequestContextListener or RequestContextFilter to expose the current request.

大意就是无法得到“HttpServletRequest request;”也就是说自动注入除了问题。

网上有的话是因为request是个单例，所以无法注入，可是这种情况应该只在高并发的情况下才可能会出现，于是我排除了这种情况。

然后有的建议我使用

@WebAppConfiguration

试了一下，又报了一个很有意思的错。

java.lang.IllegalStateException: @WebAppConfiguration should only be used with @SpringBootTest when @SpringBootTest is configured with a mock web environment. Please remove @WebAppConfiguration or reconfigure @SpringBootTest.

大意是：应该只用一个注解，要么删掉@WebAppConfiguartion，要么SpringBootTest中的 webEnvironment 变量就别用。

我第一次果断删掉了@WebAppConfiguartion，然后发现代码就回到第一次出错的代码，于是我把SpringBootTest中webEnvironment变量删掉后，再次启动，成功。

小结一下：

//刚开始注入失败的注解
@RunWith(SpringRunner.class)
@SpringBootTest(classes=BlogApplication.class,webEnvironment=SpringBootTest.WebEnvironment.RANDOM_PORT)

//第一次修改都的错误注解，Spring在你启动JUnit的时候告诉你两者只能有一个。
@RunWith(SpringRunner.class)
@WebAppConfiguration
@SpringBootTest(classes = BlogApplication.class,webEnvironment =SpringBootTest.WebEnvironment.RANDOM_PORT)

// 最后成功在JUnit4中的登录中注入request的注解
@RunWith(SpringRunner.class)
@WebAppConfiguration
@SpringBootTest(classes = BlogApplication.class)

JUint4测试报错 No thread-bound request found: Are you referring to

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