下面针对该Controller编写测试用例验证正确性，具体如下。当然也可以通过浏览器插件等进行请求提交验证。
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@RunWith
(SpringJUnit4ClassRunner.
class
)
@SpringApplicationConfiguration
(classes = MockServletContext.
class
)
@WebAppConfiguration
public
class
ApplicationTests {
private
MockMvc mvc;
@Before
public
void
setUp()
throws
Exception {
mvc = MockMvcBuilders.standaloneSetup(
new
UserController()).build();
}
@Test
public
void
testUserController()
throws
Exception {
// 测试UserController
RequestBuilder request =
null
;
// 1、get查一下user列表，应该为空
request = get(
"/users/"
);
mvc.perform(request)
.andExpect(status().isOk())
.andExpect(content().string(equalTo(
"[]"
)));
// 2、post提交一个user
request = post(
"/users/"
)
.param(
"id"
,
"1"
)
.param(
"name"
,
"测试大师"
)
.param(
"age"
,
"20"
);
mvc.perform(request)
.andExpect(content().string(equalTo(
"success"
)));
// 3、get获取user列表，应该有刚才插入的数据
request = get(
"/users/"
);
mvc.perform(request)
.andExpect(status().isOk())
.andExpect(content().string(equalTo(
"[{\"id\":1,\"name\":\"测试大师\",\"age\":20}]"
)));
// 4、put修改id为1的user
request = put(
"/users/1"
)
.param(
"name"
,
"测试终极大师"
)
.param(
"age"
,
"30"
);
mvc.perform(request)
.andExpect(content().string(equalTo(
"success"
)));
// 5、get一个id为1的user
request = get(
"/users/1"
);
mvc.perform(request)
.andExpect(content().string(equalTo(
"{\"id\":1,\"name\":\"测试终极大师\",\"age\":30}"
)));
// 6、del删除id为1的user
request = delete(
"/users/1"
);
mvc.perform(request)
.andExpect(content().string(equalTo(
"success"
)));
// 7、get查一下user列表，应该为空
request = get(
"/users/"
);
mvc.perform(request)
.andExpect(status().isOk())
.andExpect(content().string(equalTo(
"[]"
)));
}
}
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至此，我们通过引入web模块（没有做其他的任何配置），就可以轻松利用Spring MVC的功能，以非常简洁的代码完成了对User对象的RESTful API的创建以及单元测试的编写。其中同时介绍了Spring MVC中最为常用的几个核心注解：@Controller,@RestController,RequestMapping以及一些参数绑定的注解：@PathVariable,@ModelAttribute,@RequestParam等。
