实现数据库查询用户，获取密码，编写了单元测试类

src/test/java/com/fjy/spring/ApplicationTests.java

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+package com.fjy.spring;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class ApplicationTests {
+
+	@Test
+	public void contextLoads() {
+	}
+
+}

src/test/java/com/fjy/spring/controller/LoginControllerTest.java

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+package com.fjy.spring.controller;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
+
+import static org.junit.Assert.*;
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@AutoConfigureMockMvc
+public class LoginControllerTest {
+
+    @Autowired
+    private MockMvc mvc;
+
+    @Test
+    public void toLoginPage() throws Exception{
+        mvc.perform(MockMvcRequestBuilders.get("/index"))
+                .andExpect(MockMvcResultMatchers.status().isOk())
+                .andExpect(MockMvcResultMatchers.content().string("/login"));
+    }
+}

src/test/java/com/fjy/spring/controller/TestControllerTest.java

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+package com.fjy.spring.controller;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
+
+import static org.junit.Assert.*;
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@AutoConfigureMockMvc
+public class TestControllerTest {
+
+    @Autowired
+    private MockMvc mvc;
+
+    @Test
+    public void testHello()throws Exception {
+        mvc.perform(MockMvcRequestBuilders.get("/test"))
+                .andExpect(MockMvcResultMatchers.status().isOk())
+                .andExpect(MockMvcResultMatchers.content().string("Hello Spring"));
+    }
+
+   @Test
+    public void testDataBase()throws Exception {
+        mvc.perform(MockMvcRequestBuilders.get("/test/name/root"))
+                .andExpect(MockMvcResultMatchers.status().isOk())
+                .andExpect(MockMvcResultMatchers.content().string("root"));
+    }
+
+    @Test
+    public void testDataBaseId()throws Exception {
+        mvc.perform(MockMvcRequestBuilders.get("/test/id/1"))
+                .andExpect(MockMvcResultMatchers.status().isOk());
+    }
+}